diff --git a/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/ConstantFoldingRule.java b/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/ConstantFoldingRule.java
index b0ce342..ae0a842 100644
--- a/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/ConstantFoldingRule.java
+++ b/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/ConstantFoldingRule.java
@@ -112,7 +112,7 @@
             AqlTypeTraitProvider.INSTANCE, AqlBinaryBooleanInspectorImpl.FACTORY, AqlBinaryIntegerInspector.FACTORY,
             AqlPrinterFactoryProvider.INSTANCE, AqlNullWriterFactory.INSTANCE, null,
             new LogicalExpressionJobGenToExpressionRuntimeProviderAdapter(AqlLogicalExpressionJobGen.INSTANCE),
-            AqlExpressionTypeComputer.INSTANCE, AqlNullableTypeComputer.INSTANCE, null, null, null,
+            AqlExpressionTypeComputer.INSTANCE, AqlNullableTypeComputer.INSTANCE, null, null, null, null,
             GlobalConfig.DEFAULT_FRAME_SIZE, null);
 
     private static final IOperatorSchema[] _emptySchemas = new IOperatorSchema[] {};
diff --git a/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/typecast/StaticTypeCastUtil.java b/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/typecast/StaticTypeCastUtil.java
index d6e0f42..282d26b 100644
--- a/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/typecast/StaticTypeCastUtil.java
+++ b/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/typecast/StaticTypeCastUtil.java
@@ -188,8 +188,12 @@
         // if already rewritten, the required type is not null
         if (TypeComputerUtilities.getRequiredType(funcExpr) != null)
             return false;
-        TypeComputerUtilities.setRequiredAndInputTypes(funcExpr, requiredRecordType, inputRecordType);
-        return staticRecordTypeCast(funcExpr, requiredRecordType, inputRecordType, env);
+        boolean casted = staticRecordTypeCast(funcExpr, requiredRecordType, inputRecordType, env);
+        if (casted) {
+            //enforce the required type if it is statically casted
+            TypeComputerUtilities.setRequiredAndInputTypes(funcExpr, requiredRecordType, inputRecordType);
+        }
+        return casted;
     }
 
     /**
diff --git a/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AbstractAqlTranslator.java b/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AbstractAqlTranslator.java
index 9fe5750..792ff25 100644
--- a/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AbstractAqlTranslator.java
+++ b/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AbstractAqlTranslator.java
@@ -30,6 +30,7 @@
 import edu.uci.ics.asterix.metadata.entities.AsterixBuiltinTypeMap;
 import edu.uci.ics.asterix.metadata.entities.Dataverse;
 import edu.uci.ics.asterix.om.types.BuiltinType;
+import edu.uci.ics.asterix.om.util.AsterixClusterProperties;
 import edu.uci.ics.hyracks.algebricks.common.utils.Pair;
 
 /**
@@ -41,6 +42,12 @@
     protected static final Map<String, BuiltinType> builtinTypeMap = AsterixBuiltinTypeMap.getBuiltinTypes();
 
     public void validateOperation(Dataverse defaultDataverse, Statement stmt) throws AsterixException {
+
+        if (AsterixClusterProperties.INSTANCE.getState().equals(AsterixClusterProperties.State.UNUSABLE)) {
+            throw new AsterixException(" Asterix Cluster is in " + AsterixClusterProperties.State.UNUSABLE + " state."
+                    + "\n One or more Node Controllers have left.\n");
+        }
+
         boolean invalidOperation = false;
         String message = null;
         String dataverse = defaultDataverse != null ? defaultDataverse.getDataverseName() : null;
diff --git a/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AqlExpressionToPlanTranslator.java b/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AqlExpressionToPlanTranslator.java
index f2e42de..a2545ff 100644
--- a/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AqlExpressionToPlanTranslator.java
+++ b/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AqlExpressionToPlanTranslator.java
@@ -74,6 +74,7 @@
 import edu.uci.ics.asterix.common.config.AsterixMetadataProperties;
 import edu.uci.ics.asterix.common.config.DatasetConfig.DatasetType;
 import edu.uci.ics.asterix.common.exceptions.AsterixException;
+import edu.uci.ics.asterix.common.functions.FunctionConstants;
 import edu.uci.ics.asterix.common.functions.FunctionSignature;
 import edu.uci.ics.asterix.formats.base.IDataFormat;
 import edu.uci.ics.asterix.metadata.MetadataException;
@@ -90,7 +91,6 @@
 import edu.uci.ics.asterix.om.base.AString;
 import edu.uci.ics.asterix.om.constants.AsterixConstantValue;
 import edu.uci.ics.asterix.om.functions.AsterixBuiltinFunctions;
-import edu.uci.ics.asterix.om.functions.AsterixBuiltinFunctions.FunctionNamespace;
 import edu.uci.ics.asterix.om.functions.AsterixFunctionInfo;
 import edu.uci.ics.asterix.om.types.BuiltinType;
 import edu.uci.ics.asterix.om.types.IAType;
@@ -506,14 +506,10 @@
         if (builtinAquafi != null) {
             fi = builtinAquafi;
         } else {
-            fi = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(), functionName, arity);
+            fi = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, functionName, arity);
             afi = AsterixBuiltinFunctions.lookupFunction(fi);
             if (afi == null) {
-                fi = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(), functionName, arity);
-                afi = AsterixBuiltinFunctions.lookupFunction(fi);
-                if (afi == null) {
-                    return null;
-                }
+                return null;
             }
         }
         if (AsterixBuiltinFunctions.isBuiltinAggregateFunction(fi)) {
diff --git a/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AqlPlusExpressionToPlanTranslator.java b/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AqlPlusExpressionToPlanTranslator.java
index 50e79a5..0f636a9 100644
--- a/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AqlPlusExpressionToPlanTranslator.java
+++ b/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/AqlPlusExpressionToPlanTranslator.java
@@ -90,7 +90,6 @@
 import edu.uci.ics.asterix.om.base.AString;
 import edu.uci.ics.asterix.om.constants.AsterixConstantValue;
 import edu.uci.ics.asterix.om.functions.AsterixBuiltinFunctions;
-import edu.uci.ics.asterix.om.functions.AsterixBuiltinFunctions.FunctionNamespace;
 import edu.uci.ics.asterix.om.functions.AsterixFunctionInfo;
 import edu.uci.ics.asterix.om.types.ARecordType;
 import edu.uci.ics.asterix.om.types.BuiltinType;
@@ -465,14 +464,10 @@
         if (builtinAquafi != null) {
             fi = builtinAquafi;
         } else {
-            fi = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(), signature.getName());
+            fi = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, signature.getName());
             FunctionIdentifier builtinAsterixFi = AsterixBuiltinFunctions.getBuiltinFunctionIdentifier(fi);
             if (builtinAsterixFi != null) {
                 fi = builtinAsterixFi;
-            } else {
-                fi = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(), signature.getName());
-                builtinAsterixFi = AsterixBuiltinFunctions.getBuiltinFunctionIdentifier(fi);
-                fi = builtinAsterixFi;
             }
         }
         AbstractFunctionCallExpression f;
diff --git a/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/CompiledStatements.java b/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/CompiledStatements.java
index a91f2eb..49e2ed6 100644
--- a/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/CompiledStatements.java
+++ b/asterix-algebra/src/main/java/edu/uci/ics/asterix/translator/CompiledStatements.java
@@ -35,6 +35,7 @@
 import edu.uci.ics.asterix.aql.expression.WhereClause;
 import edu.uci.ics.asterix.aql.literal.StringLiteral;
 import edu.uci.ics.asterix.common.config.DatasetConfig.IndexType;
+import edu.uci.ics.asterix.common.functions.FunctionConstants;
 import edu.uci.ics.asterix.common.functions.FunctionSignature;
 import edu.uci.ics.asterix.metadata.declared.AqlMetadataProvider;
 import edu.uci.ics.asterix.metadata.entities.Dataset;
@@ -496,7 +497,7 @@
             arguments.add(argumentLiteral);
 
             CallExpr callExpression = new CallExpr(new FunctionSignature(
-                    AsterixBuiltinFunctions.FunctionNamespace.ASTERIX_PUBLIC.name(), "dataset", 1), arguments);
+                    FunctionConstants.ASTERIX_NS, "dataset", 1), arguments);
             List<Clause> clauseList = new ArrayList<Clause>();
             Clause forClause = new ForClause(var, callExpression);
             clauseList.add(forClause);
diff --git a/asterix-app/data/temporal/simpletemp_30.json b/asterix-app/data/temporal/simpletemp_30.json
new file mode 100644
index 0000000..f0a4582
--- /dev/null
+++ b/asterix-app/data/temporal/simpletemp_30.json
@@ -0,0 +1,3 @@
+{ "date": date("4619-11-23"), "time": time("14:29:36.786Z"), "datetime": datetime("2749-01-27T17:27:30.020Z"), "duration": duration("-P474133Y7M854630DT4H40M6.45S"), "year-month-duration": year-month-duration("P193989Y3M"), "day-time-duration": day-time-duration("P4477686DT4H49M31.87S"), "date-interval": interval-date("-9537-08-04, 9656-06-03"), "time-interval": interval-time("12:04:45.689Z, 12:41:59.002Z"), "datetime-interval": interval-datetime("-2640-10-11T17:32:15.675Z, 4104-02-01T05:59:11.902Z") }
+{ "date": date("-9971-09-24"), "time": time("11:38:17.154Z"), "datetime": datetime("1259-11-13T09:49:11.852Z"), "duration": duration("P473653Y9M4566143DT10H20M53.61S"), "year-month-duration": year-month-duration("P148233Y10M"), "day-time-duration": day-time-duration("-P7236357DT2H56M56.164S"), "date-interval": interval-date("-0255-09-06, 4925-05-03"), "time-interval": interval-time("23:10:45.169Z, 01:37:48.736Z"), "datetime-interval": interval-datetime("0534-12-08T08:20:31.487Z, 6778-02-16T22:40:21.653Z") }
+{ "date": date("7986-11-25"), "time": time("12:49:39.736Z"), "datetime": datetime("-8337-01-30T15:23:07.598Z"), "duration": duration("-P184484Y7M2241423DT10H42M49.500S"), "year-month-duration": year-month-duration("-P546031Y3M"), "day-time-duration": day-time-duration("P2623386DT10H32M31.983S"), "date-interval": interval-date("-4514-05-24, 3337-08-26"), "time-interval": interval-time("04:16:42.321Z, 02:22:56.816Z"), "datetime-interval": interval-datetime("2129-12-12T13:18:35.758Z, 8647-07-01T13:10:19.691Z") }
diff --git a/asterix-app/data/tinysocial/fbm.adm b/asterix-app/data/tinysocial/fbm.adm
new file mode 100644
index 0000000..58d7f08
--- /dev/null
+++ b/asterix-app/data/tinysocial/fbm.adm
@@ -0,0 +1,15 @@
+{"message-id":1,"author-id":3,"in-response-to":2,"sender-location":point("47.16,77.75"),"message":" love sprint its shortcut-menu is awesome:)"}
+{"message-id":2,"author-id":1,"in-response-to":4,"sender-location":point("41.66,80.87"),"message":" dislike iphone its touch-screen is horrible"}
+{"message-id":3,"author-id":2,"in-response-to":4,"sender-location":point("48.09,81.01"),"message":" like samsung the plan is amazing"}
+{"message-id":4,"author-id":1,"in-response-to":2,"sender-location":point("37.73,97.04"),"message":" can't stand at&t the network is horrible:("}
+{"message-id":5,"author-id":6,"in-response-to":2,"sender-location":point("34.7,90.76"),"message":" love sprint the customization is mind-blowing"}
+{"message-id":6,"author-id":2,"in-response-to":1,"sender-location":point("31.5,75.56"),"message":" like t-mobile its platform is mind-blowing"}
+{"message-id":7,"author-id":5,"in-response-to":15,"sender-location":point("32.91,85.05"),"message":" dislike sprint the speed is horrible"}
+{"message-id":8,"author-id":1,"in-response-to":11,"sender-location":point("40.33,80.87"),"message":" like verizon the 3G is awesome:)"}
+{"message-id":9,"author-id":3,"in-response-to":12,"sender-location":point("34.45,96.48"),"message":" love verizon its wireless is good"}
+{"message-id":10,"author-id":1,"in-response-to":12,"sender-location":point("42.5,70.01"),"message":" can't stand motorola the touch-screen is terrible"}
+{"message-id":11,"author-id":1,"in-response-to":1,"sender-location":point("38.97,77.49"),"message":" can't stand at&t its plan is terrible"}
+{"message-id":12,"author-id":10,"in-response-to":6,"sender-location":point("42.26,77.76"),"message":" can't stand t-mobile its voicemail-service is OMG:("}
+{"message-id":13,"author-id":10,"in-response-to":4,"sender-location":point("42.77,78.92"),"message":" dislike iphone the voice-command is bad:("}
+{"message-id":14,"author-id":9,"in-response-to":12,"sender-location":point("41.33,85.28"),"message":" love at&t its 3G is good:)"}
+{"message-id":15,"author-id":7,"in-response-to":11,"sender-location":point("44.47,67.11"),"message":" like iphone the voicemail-service is awesome"}
diff --git a/asterix-app/data/tinysocial/fbu.adm b/asterix-app/data/tinysocial/fbu.adm
new file mode 100644
index 0000000..7e99ea4
--- /dev/null
+++ b/asterix-app/data/tinysocial/fbu.adm
@@ -0,0 +1,10 @@
+{"id":1,"alias":"Margarita","name":"MargaritaStoddard","user-since":datetime("2012-08-20T10:10:00"),"friend-ids":{{2,3,6,10}},"employment":[{"organization-name":"Codetechno","start-date":date("2006-08-06")}]}
+{"id":2,"alias":"Isbel","name":"IsbelDull","user-since":datetime("2011-01-22T10:10:00"),"friend-ids":{{1,4}},"employment":[{"organization-name":"Hexviafind","start-date":date("2010-04-27")}]}
+{"id":3,"alias":"Emory","name":"EmoryUnk","user-since":datetime("2012-07-10T10:10:00"),"friend-ids":{{1,5,8,9}},"employment":[{"organization-name":"geomedia","start-date":date("2010-06-17"),"end-date":date("2010-01-26")}]}
+{"id":4,"alias":"Nicholas","name":"NicholasStroh","user-since":datetime("2010-12-27T10:10:00"),"friend-ids":{{2}},"employment":[{"organization-name":"Zamcorporation","start-date":date("2010-06-08")}]}
+{"id":5,"alias":"Von","name":"VonKemble","user-since":datetime("2010-01-05T10:10:00"),"friend-ids":{{3,6,10}},"employment":[{"organization-name":"Kongreen","start-date":date("2010-11-27")}]}
+{"id":6,"alias":"Willis","name":"WillisWynne","user-since":datetime("2005-01-17T10:10:00"),"friend-ids":{{1,3,7}},"employment":[{"organization-name":"jaydax","start-date":date("2009-05-15")}]}
+{"id":7,"alias":"Suzanna","name":"SuzannaTillson","user-since":datetime("2012-08-07T10:10:00"),"friend-ids":{{6}},"employment":[{"organization-name":"Labzatron","start-date":date("2011-04-19")}]}
+{"id":8,"alias":"Nila","name":"NilaMilliron","user-since":datetime("2008-01-01T10:10:00"),"friend-ids":{{3}},"employment":[{"organization-name":"Plexlane","start-date":date("2010-02-28")}]}
+{"id":9,"alias":"Woodrow","name":"WoodrowNehling","user-since":datetime("2005-09-20T10:10:00"),"friend-ids":{{3,10}},"employment":[{"organization-name":"Zuncan","start-date":date("2003-04-22"),"end-date":date("2009-12-13")}]}
+{"id":10,"alias":"Bram","name":"BramHatch","user-since":datetime("2010-10-16T10:10:00"),"friend-ids":{{1,5,9}},"employment":[{"organization-name":"physcane","start-date":date("2007-06-05"),"end-date":date("2011-11-05")}]}
diff --git a/asterix-app/data/tinysocial/twm.adm b/asterix-app/data/tinysocial/twm.adm
new file mode 100644
index 0000000..fa764af
--- /dev/null
+++ b/asterix-app/data/tinysocial/twm.adm
@@ -0,0 +1,12 @@
+{"tweetid":"1","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("47.44,80.65"),"send-time":datetime("2008-04-26T10:10:00"),"referred-topics":{{"t-mobile","customization"}},"message-text":" love t-mobile its customization is good:)"}
+{"tweetid":"2","user":{"screen-name":"ColineGeyer@63","lang":"en","friends_count":121,"statuses_count":362,"name":"Coline Geyer","followers_count":17159},"sender-location":point("32.84,67.14"),"send-time":datetime("2010-05-13T10:10:00"),"referred-topics":{{"verizon","shortcut-menu"}},"message-text":" like verizon its shortcut-menu is awesome:)"}
+{"tweetid":"3","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("29.72,75.8"),"send-time":datetime("2006-11-04T10:10:00"),"referred-topics":{{"motorola","speed"}},"message-text":" like motorola the speed is good:)"}
+{"tweetid":"4","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("39.28,70.48"),"send-time":datetime("2011-12-26T10:10:00"),"referred-topics":{{"sprint","voice-command"}},"message-text":" like sprint the voice-command is mind-blowing:)"}
+{"tweetid":"5","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("40.09,92.69"),"send-time":datetime("2006-08-04T10:10:00"),"referred-topics":{{"motorola","speed"}},"message-text":" can't stand motorola its speed is terrible:("}
+{"tweetid":"6","user":{"screen-name":"ColineGeyer@63","lang":"en","friends_count":121,"statuses_count":362,"name":"Coline Geyer","followers_count":17159},"sender-location":point("47.51,83.99"),"send-time":datetime("2010-05-07T10:10:00"),"referred-topics":{{"iphone","voice-clarity"}},"message-text":" like iphone the voice-clarity is good:)"}
+{"tweetid":"7","user":{"screen-name":"ChangEwing_573","lang":"en","friends_count":182,"statuses_count":394,"name":"Chang Ewing","followers_count":32136},"sender-location":point("36.21,72.6"),"send-time":datetime("2011-08-25T10:10:00"),"referred-topics":{{"samsung","platform"}},"message-text":" like samsung the platform is good"}
+{"tweetid":"8","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("46.05,93.34"),"send-time":datetime("2005-10-14T10:10:00"),"referred-topics":{{"t-mobile","shortcut-menu"}},"message-text":" like t-mobile the shortcut-menu is awesome:)"}
+{"tweetid":"9","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("36.86,74.62"),"send-time":datetime("2012-07-21T10:10:00"),"referred-topics":{{"verizon","voicemail-service"}},"message-text":" love verizon its voicemail-service is awesome"}
+{"tweetid":"10","user":{"screen-name":"ColineGeyer@63","lang":"en","friends_count":121,"statuses_count":362,"name":"Coline Geyer","followers_count":17159},"sender-location":point("29.15,76.53"),"send-time":datetime("2008-01-26T10:10:00"),"referred-topics":{{"verizon","voice-clarity"}},"message-text":" hate verizon its voice-clarity is OMG:("}
+{"tweetid":"11","user":{"screen-name":"NilaMilliron_tw","lang":"en","friends_count":445,"statuses_count":164,"name":"Nila Milliron","followers_count":22649},"sender-location":point("37.59,68.42"),"send-time":datetime("2008-03-09T10:10:00"),"referred-topics":{{"iphone","platform"}},"message-text":" can't stand iphone its platform is terrible"}
+{"tweetid":"12","user":{"screen-name":"OliJackson_512","lang":"en","friends_count":445,"statuses_count":164,"name":"Oli Jackson","followers_count":22649},"sender-location":point("24.82,94.63"),"send-time":datetime("2010-02-13T10:10:00"),"referred-topics":{{"samsung","voice-command"}},"message-text":" like samsung the voice-command is amazing:)"}
diff --git a/asterix-app/data/tinysocial/twu.adm b/asterix-app/data/tinysocial/twu.adm
new file mode 100644
index 0000000..32a1917
--- /dev/null
+++ b/asterix-app/data/tinysocial/twu.adm
@@ -0,0 +1,4 @@
+{"screen-name":"NathanGiesen@211","lang":"en","friends_count":18,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416}
+{"screen-name":"ColineGeyer@63","lang":"en","friends_count":121,"statuses_count":362,"name":"Coline Geyer","followers_count":17159}
+{"screen-name":"NilaMilliron_tw","lang":"en","friends_count":445,"statuses_count":164,"name":"Nila Milliron","followers_count":22649}
+{"screen-name":"ChangEwing_573","lang":"en","friends_count":182,"statuses_count":394,"name":"Chang Ewing","followers_count":32136}
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/APIFramework.java b/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/APIFramework.java
index a9d20d0..d72ba6a 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/APIFramework.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/APIFramework.java
@@ -162,7 +162,7 @@
             out.println();
             switch (pdf) {
                 case HTML: {
-                    out.println("<h3>Expression tree:</h3>");
+                    out.println("<h4>Expression tree:</h4>");
                     out.println("<pre>");
                     break;
                 }
@@ -197,7 +197,7 @@
 
             switch (pdf) {
                 case HTML: {
-                    out.println("<h3>Rewriten expression tree:</h3>");
+                    out.println("<h4>Rewritten expression tree:</h4>");
                     out.println("<pre>");
                     break;
                 }
@@ -234,7 +234,7 @@
 
             switch (pdf) {
                 case HTML: {
-                    out.println("<h3>Logical plan:</h3>");
+                    out.println("<h4>Logical plan:</h4>");
                     out.println("<pre>");
                     break;
                 }
@@ -289,7 +289,7 @@
                 } else {
                     switch (pdf) {
                         case HTML: {
-                            out.println("<h3>Optimized logical plan:</h3>");
+                            out.println("<h4>Optimized logical plan:</h4>");
                             out.println("<pre>");
                             break;
                         }
@@ -327,6 +327,7 @@
         builder.setHashFunctionFactoryProvider(format.getBinaryHashFunctionFactoryProvider());
         builder.setHashFunctionFamilyProvider(format.getBinaryHashFunctionFamilyProvider());
         builder.setNullWriterFactory(format.getNullWriterFactory());
+        builder.setPredicateEvaluatorFactoryProvider(format.getPredicateEvaluatorFactoryProvider());
 
         switch (pdf) {
             case JSON:
@@ -348,7 +349,7 @@
         if (pc.isPrintJob()) {
             switch (pdf) {
                 case HTML: {
-                    out.println("<h3>Hyracks job:</h3>");
+                    out.println("<h4>Hyracks job:</h4>");
                     out.println("<pre>");
                     break;
                 }
@@ -380,7 +381,7 @@
             hcc.waitForCompletion(jobId);
             long endTime = System.currentTimeMillis();
             double duration = (endTime - startTime) / 1000.00;
-            out.println("<pre>Duration: " + duration + "</pre>");
+            out.println("<pre>Duration: " + duration + " sec</pre>");
         }
 
     }
@@ -402,7 +403,7 @@
             }
             long endTime = System.currentTimeMillis();
             double duration = (endTime - startTime) / 1000.00;
-            out.println("<pre>Duration: " + duration + "</pre>");
+            out.println("<pre>Duration: " + duration + " sec</pre>");
         }
 
     }
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/AsterixAppRuntimeContext.java b/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/AsterixAppRuntimeContext.java
index 65eae64..e64f68f 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/AsterixAppRuntimeContext.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/AsterixAppRuntimeContext.java
@@ -49,10 +49,11 @@
 import edu.uci.ics.hyracks.storage.common.file.ResourceIdFactory;
 import edu.uci.ics.hyracks.storage.common.file.ResourceIdFactoryProvider;
 
-public class AsterixAppRuntimeContext implements IAsterixAppRuntimeContext,  IAsterixPropertiesProvider {
+public class AsterixAppRuntimeContext implements IAsterixAppRuntimeContext, IAsterixPropertiesProvider {
     private static final int DEFAULT_BUFFER_CACHE_PAGE_SIZE = 32768;
     private static final int DEFAULT_LIFECYCLEMANAGER_MEMORY_BUDGET = 1024 * 1024 * 1024; // 1GB
     private static final int DEFAULT_MAX_OPEN_FILES = Integer.MAX_VALUE;
+    private static final int METADATA_IO_DEVICE_ID = 0;
 
     private final INCApplicationContext ncApplicationContext;
 
@@ -188,6 +189,10 @@
         return ioManager;
     }
 
+    public int getMetaDataIODeviceId() {
+        return METADATA_IO_DEVICE_ID;
+    }
+
     @Override
     public AsterixStorageProperties getStorageProperties() {
         return storageProperties;
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/AsterixHyracksIntegrationUtil.java b/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/AsterixHyracksIntegrationUtil.java
index 272050f..fb87a8e1 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/AsterixHyracksIntegrationUtil.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/api/common/AsterixHyracksIntegrationUtil.java
@@ -1,5 +1,6 @@
 package edu.uci.ics.asterix.api.common;
 
+import java.io.File;
 import java.util.EnumSet;
 
 import edu.uci.ics.asterix.common.config.GlobalConfig;
@@ -50,6 +51,8 @@
         ncConfig1.datasetIPAddress = "127.0.0.1";
         ncConfig1.resultHistorySize = 1000;
         ncConfig1.nodeId = NC1_ID;
+        ncConfig1.ioDevices = System.getProperty("java.io.tmpdir") + File.separator + "nc1/iodevice0" + ","
+                + System.getProperty("java.io.tmpdir") + File.separator + "nc1/iodevice1";
         ncConfig1.appNCMainClass = NCApplicationEntryPoint.class.getName();
         nc1 = new NodeControllerService(ncConfig1);
         nc1.start();
@@ -62,6 +65,8 @@
         ncConfig2.datasetIPAddress = "127.0.0.1";
         ncConfig2.resultHistorySize = 1000;
         ncConfig2.nodeId = NC2_ID;
+        ncConfig2.ioDevices = System.getProperty("java.io.tmpdir") + File.separator + "nc2/iodevice0" + ","
+                + System.getProperty("java.io.tmpdir") + File.separator + "nc2/iodevice1";
         ncConfig2.appNCMainClass = NCApplicationEntryPoint.class.getName();
         nc2 = new NodeControllerService(ncConfig2);
         nc2.start();
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/APIServlet.java b/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/APIServlet.java
index d378429..fcea1ea 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/APIServlet.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/APIServlet.java
@@ -3,15 +3,21 @@
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.OutputStream;
 import java.io.InputStreamReader;
 import java.io.PrintWriter;
+import java.io.File;
+import java.io.FileInputStream;
 import java.util.List;
 import java.util.logging.Level;
+import java.awt.image.BufferedImage;
 
 import javax.servlet.ServletContext;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import javax.activation.MimetypesFileTypeMap;
+import javax.imageio.ImageIO;
 
 import edu.uci.ics.asterix.api.common.APIFramework.DisplayFormat;
 import edu.uci.ics.asterix.api.common.SessionConfig;
@@ -79,42 +85,24 @@
             aqlTranslator.compileAndExecute(hcc, hds, false);
             long endTime = System.currentTimeMillis();
             duration = (endTime - startTime) / 1000.00;
-            out.println("<PRE>Duration of all jobs: " + duration + "</PRE>");
+            out.println("<PRE>Duration of all jobs: " + duration + " sec</PRE>");
         } catch (ParseException | TokenMgrError | edu.uci.ics.asterix.aqlplus.parser.TokenMgrError pe) {
             GlobalConfig.ASTERIX_LOGGER.log(Level.INFO, pe.toString(), pe);
             out.println("<pre class=\"error\">");
-            String message = pe.getMessage();
-            message = message.replace("<", "&lt");
-            message = message.replace(">", "&gt");
-            out.println("SyntaxError:" + message);
-            int pos = message.indexOf("line");
-            if (pos > 0) {
-                int columnPos = message.indexOf(",", pos + 1 + "line".length());
-                int lineNo = Integer.parseInt(message.substring(pos + "line".length() + 1, columnPos));
-                String[] lines = query.split("\n");
-                if (lineNo >= lines.length) {
-                    out.println("===> &ltBLANK LINE&gt");
-                } else {
-                    String line = lines[lineNo - 1];
-                    out.println("==> " + line);
-                }
-            }
-            out.println("</pre>");
-        } catch (Exception e) {
-            String errorMessage = ResultUtils.extractErrorMessage(e);
-            GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, errorMessage, e);
-            out.println("<pre class=\"error\">");
+            String errorMessage = ResultUtils.buildParseExceptionMessage(pe, query);
             out.println(errorMessage);
             out.println("</pre>");
+        } catch (Exception e) {
+            GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, e.getMessage(), e);
+            ResultUtils.webUIErrorHandler(out, e);
         }
     }
 
     @Override
     public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
         String resourcePath = null;
-        response.setCharacterEncoding("utf-8");
-        PrintWriter out = response.getWriter();
         String requestURI = request.getRequestURI();
+
         if (requestURI.equals("/")) {
             response.setContentType("text/html");
             resourcePath = "/webui/querytemplate.html";
@@ -127,6 +115,21 @@
             response.sendError(HttpServletResponse.SC_NOT_FOUND);
             return;
         }
+
+        // Special handler for font files and .png resources
+        if (resourcePath.endsWith(".png")) {
+
+            BufferedImage img = ImageIO.read(is);
+            OutputStream outputStream = response.getOutputStream();
+            String formatName = "png";
+            response.setContentType("image/png");
+            ImageIO.write(img, formatName, outputStream);
+            outputStream.close();
+            return;
+
+        }
+
+        response.setCharacterEncoding("utf-8");
         InputStreamReader isr = new InputStreamReader(is);
         StringBuilder sb = new StringBuilder();
         BufferedReader br = new BufferedReader(isr);
@@ -137,6 +140,7 @@
             line = br.readLine();
         }
 
+        PrintWriter out = response.getWriter();
         out.println(sb.toString());
     }
 
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/RESTAPIServlet.java b/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/RESTAPIServlet.java
index dff759d..8caf05e 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/RESTAPIServlet.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/RESTAPIServlet.java
@@ -32,6 +32,7 @@
 import edu.uci.ics.asterix.aql.base.Statement.Kind;
 import edu.uci.ics.asterix.aql.parser.AQLParser;
 import edu.uci.ics.asterix.aql.parser.ParseException;
+import edu.uci.ics.asterix.aql.parser.TokenMgrError;
 import edu.uci.ics.asterix.aql.translator.AqlTranslator;
 import edu.uci.ics.asterix.common.config.GlobalConfig;
 import edu.uci.ics.asterix.metadata.MetadataManager;
@@ -95,35 +96,24 @@
             AqlTranslator aqlTranslator = new AqlTranslator(aqlStatements, out, sessionConfig, format);
 
             aqlTranslator.compileAndExecute(hcc, hds, asyncResults);
-
-        } catch (ParseException pe) {
-            GlobalConfig.ASTERIX_LOGGER.log(Level.INFO, pe.toString(), pe);
-            StringBuilder errorMessage = new StringBuilder();
-            String message = pe.getLocalizedMessage();
-            message = message.replace("<", "&lt");
-            message = message.replace(">", "&gt");
-            errorMessage.append("SyntaxError:" + message + "\n");
-            int pos = message.indexOf("line");
-            if (pos > 0) {
-                int columnPos = message.indexOf(",", pos + 1 + "line".length());
-                int lineNo = Integer.parseInt(message.substring(pos + "line".length() + 1, columnPos));
-                String line = query.split("\n")[lineNo - 1];
-                errorMessage.append("==> " + line + "\n");
-            }
-            JSONObject errorResp = ResultUtils.getErrorResponse(2, errorMessage.toString());
+        } catch (ParseException | TokenMgrError | edu.uci.ics.asterix.aqlplus.parser.TokenMgrError pe) {
+            GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, pe.getMessage(), pe);
+            String errorMessage = ResultUtils.buildParseExceptionMessage(pe, query);
+            JSONObject errorResp = ResultUtils.getErrorResponse(2, errorMessage, "", "");
             out.write(errorResp.toString());
+            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
         } catch (Exception e) {
-            String errorMessage = ResultUtils.extractErrorMessage(e);
-            GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, errorMessage, e);
-            JSONObject errorResp = ResultUtils.getErrorResponse(99, errorMessage);
-            out.write(errorResp.toString());
+            GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, e.getMessage(), e);
+            ResultUtils.apiErrorHandler(out, e);
+            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
         }
     }
 
     private boolean checkForbiddenStatements(List<Statement> aqlStatements, PrintWriter out) {
         for (Statement st : aqlStatements) {
             if (!getAllowedStatements().contains(st.getKind())) {
-                JSONObject errorResp = ResultUtils.getErrorResponse(1, String.format(getErrorMessage(), st.getKind()));
+                JSONObject errorResp = ResultUtils.getErrorResponse(1, String.format(getErrorMessage(), st.getKind()),
+                        "", "");
                 out.write(errorResp.toString());
                 return true;
             }
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/aql/translator/AqlTranslator.java b/asterix-app/src/main/java/edu/uci/ics/asterix/aql/translator/AqlTranslator.java
index 911f6fd..93dcf39 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/aql/translator/AqlTranslator.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/aql/translator/AqlTranslator.java
@@ -186,112 +186,107 @@
             metadataProvider.setOutputFile(outputFile);
             metadataProvider.setConfig(config);
             jobsToExecute.clear();
-            try {
-                switch (stmt.getKind()) {
-                    case SET: {
-                        handleSetStatement(metadataProvider, stmt, config);
-                        break;
-                    }
-                    case DATAVERSE_DECL: {
-                        activeDefaultDataverse = handleUseDataverseStatement(metadataProvider, stmt);
-                        break;
-                    }
-                    case CREATE_DATAVERSE: {
-                        handleCreateDataverseStatement(metadataProvider, stmt);
-                        break;
-                    }
-                    case DATASET_DECL: {
-                        handleCreateDatasetStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-                    case CREATE_INDEX: {
-                        handleCreateIndexStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-                    case TYPE_DECL: {
-                        handleCreateTypeStatement(metadataProvider, stmt);
-                        break;
-                    }
-                    case NODEGROUP_DECL: {
-                        handleCreateNodeGroupStatement(metadataProvider, stmt);
-                        break;
-                    }
-                    case DATAVERSE_DROP: {
-                        handleDataverseDropStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-                    case DATASET_DROP: {
-                        handleDatasetDropStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-                    case INDEX_DROP: {
-                        handleIndexDropStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-                    case TYPE_DROP: {
-                        handleTypeDropStatement(metadataProvider, stmt);
-                        break;
-                    }
-                    case NODEGROUP_DROP: {
-                        handleNodegroupDropStatement(metadataProvider, stmt);
-                        break;
-                    }
-
-                    case CREATE_FUNCTION: {
-                        handleCreateFunctionStatement(metadataProvider, stmt);
-                        break;
-                    }
-
-                    case FUNCTION_DROP: {
-                        handleFunctionDropStatement(metadataProvider, stmt);
-                        break;
-                    }
-
-                    case LOAD_FROM_FILE: {
-                        handleLoadFromFileStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-                    case WRITE_FROM_QUERY_RESULT: {
-                        handleWriteFromQueryResultStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-                    case INSERT: {
-                        handleInsertStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-                    case DELETE: {
-                        handleDeleteStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-
-                    case BEGIN_FEED: {
-                        handleBeginFeedStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-
-                    case CONTROL_FEED: {
-                        handleControlFeedStatement(metadataProvider, stmt, hcc);
-                        break;
-                    }
-
-                    case QUERY: {
-                        metadataProvider.setResultSetId(new ResultSetId(resultSetIdCounter++));
-                        executionResult.add(handleQuery(metadataProvider, (Query) stmt, hcc, hdc, asyncResults));
-                        break;
-                    }
-
-                    case WRITE: {
-                        Pair<IAWriterFactory, FileSplit> result = handleWriteStatement(metadataProvider, stmt);
-                        if (result.first != null) {
-                            writerFactory = result.first;
-                        }
-                        outputFile = result.second;
-                        break;
-                    }
-
+            switch (stmt.getKind()) {
+                case SET: {
+                    handleSetStatement(metadataProvider, stmt, config);
+                    break;
                 }
-            } catch (Exception e) {
-                throw new AlgebricksException(e);
+                case DATAVERSE_DECL: {
+                    activeDefaultDataverse = handleUseDataverseStatement(metadataProvider, stmt);
+                    break;
+                }
+                case CREATE_DATAVERSE: {
+                    handleCreateDataverseStatement(metadataProvider, stmt);
+                    break;
+                }
+                case DATASET_DECL: {
+                    handleCreateDatasetStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+                case CREATE_INDEX: {
+                    handleCreateIndexStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+                case TYPE_DECL: {
+                    handleCreateTypeStatement(metadataProvider, stmt);
+                    break;
+                }
+                case NODEGROUP_DECL: {
+                    handleCreateNodeGroupStatement(metadataProvider, stmt);
+                    break;
+                }
+                case DATAVERSE_DROP: {
+                    handleDataverseDropStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+                case DATASET_DROP: {
+                    handleDatasetDropStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+                case INDEX_DROP: {
+                    handleIndexDropStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+                case TYPE_DROP: {
+                    handleTypeDropStatement(metadataProvider, stmt);
+                    break;
+                }
+                case NODEGROUP_DROP: {
+                    handleNodegroupDropStatement(metadataProvider, stmt);
+                    break;
+                }
+
+                case CREATE_FUNCTION: {
+                    handleCreateFunctionStatement(metadataProvider, stmt);
+                    break;
+                }
+
+                case FUNCTION_DROP: {
+                    handleFunctionDropStatement(metadataProvider, stmt);
+                    break;
+                }
+
+                case LOAD_FROM_FILE: {
+                    handleLoadFromFileStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+                case WRITE_FROM_QUERY_RESULT: {
+                    handleWriteFromQueryResultStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+                case INSERT: {
+                    handleInsertStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+                case DELETE: {
+                    handleDeleteStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+
+                case BEGIN_FEED: {
+                    handleBeginFeedStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+
+                case CONTROL_FEED: {
+                    handleControlFeedStatement(metadataProvider, stmt, hcc);
+                    break;
+                }
+
+                case QUERY: {
+                    metadataProvider.setResultSetId(new ResultSetId(resultSetIdCounter++));
+                    executionResult.add(handleQuery(metadataProvider, (Query) stmt, hcc, hdc, asyncResults));
+                    break;
+                }
+
+                case WRITE: {
+                    Pair<IAWriterFactory, FileSplit> result = handleWriteStatement(metadataProvider, stmt);
+                    if (result.first != null) {
+                        writerFactory = result.first;
+                    }
+                    outputFile = result.second;
+                    break;
+                }
             }
         }
         return executionResult;
@@ -364,7 +359,7 @@
             MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
         } catch (Exception e) {
             abort(e, e, mdTxnCtx);
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -528,7 +523,7 @@
                 }
             }
 
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -664,7 +659,7 @@
                             + "." + datasetName + "." + indexName + ") couldn't be removed from the metadata", e);
                 }
             }
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -703,7 +698,7 @@
             MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
         } catch (Exception e) {
             abort(e, e, mdTxnCtx);
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -817,7 +812,7 @@
                 }
             }
 
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -922,7 +917,7 @@
                 }
             }
 
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -1027,7 +1022,7 @@
                 }
             }
 
-            throw new AlgebricksException(e);
+            throw e;
 
         } finally {
             releaseWriteLatch();
@@ -1054,7 +1049,7 @@
             MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
         } catch (Exception e) {
             abort(e, e, mdTxnCtx);
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -1080,7 +1075,7 @@
             MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
         } catch (Exception e) {
             abort(e, e, mdTxnCtx);
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -1106,7 +1101,7 @@
             MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
         } catch (Exception e) {
             abort(e, e, mdTxnCtx);
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -1130,7 +1125,7 @@
             MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
         } catch (Exception e) {
             abort(e, e, mdTxnCtx);
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -1178,7 +1173,7 @@
                 abort(e, e, mdTxnCtx);
             }
 
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseReadLatch();
         }
@@ -1208,7 +1203,7 @@
             if (bActiveTxn) {
                 abort(e, e, mdTxnCtx);
             }
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseReadLatch();
         }
@@ -1241,7 +1236,7 @@
             if (bActiveTxn) {
                 abort(e, e, mdTxnCtx);
             }
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseReadLatch();
         }
@@ -1275,7 +1270,7 @@
             if (bActiveTxn) {
                 abort(e, e, mdTxnCtx);
             }
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseReadLatch();
         }
@@ -1341,7 +1336,7 @@
             if (bActiveTxn) {
                 abort(e, e, mdTxnCtx);
             }
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseReadLatch();
         }
@@ -1370,7 +1365,7 @@
             if (bActiveTxn) {
                 abort(e, e, mdTxnCtx);
             }
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseReadLatch();
         }
@@ -1401,28 +1396,38 @@
                     handle.put(jobId.getId());
                     handle.put(metadataProvider.getResultSetId().getId());
                     response.put("handle", handle);
+                    out.print(response);
+                    out.flush();
                 } else {
+                    if (pdf == DisplayFormat.HTML) {
+                        out.println("<h4>Results:</h4>");
+                        out.println("<pre>");
+                    }
+
                     ByteBuffer buffer = ByteBuffer.allocate(ResultReader.FRAME_SIZE);
                     ResultReader resultReader = new ResultReader(hcc, hdc);
                     resultReader.open(jobId, metadataProvider.getResultSetId());
                     buffer.clear();
-                    JSONArray results = new JSONArray();
+
                     while (resultReader.read(buffer) > 0) {
-                        results.put(ResultUtils.getJSONFromBuffer(buffer, resultReader.getFrameTupleAccessor()));
+                        response.put("results",
+                                ResultUtils.getJSONFromBuffer(buffer, resultReader.getFrameTupleAccessor()));
                         buffer.clear();
+                        switch (pdf) {
+                            case HTML:
+                                ResultUtils.prettyPrintHTML(out, response);
+                                break;
+                            case TEXT:
+                            case JSON:
+                                out.print(response);
+                                break;
+                        }
+                        out.flush();
                     }
-                    response.put("results", results);
-                }
-                switch (pdf) {
-                    case HTML:
-                        out.println("<pre>");
-                        ResultUtils.prettyPrintHTML(out, response);
+                    if (pdf == DisplayFormat.HTML) {
                         out.println("</pre>");
-                        break;
-                    case TEXT:
-                    case JSON:
-                        out.print(response);
-                        break;
+                    }
+
                 }
                 hcc.waitForCompletion(jobId);
             }
@@ -1433,7 +1438,7 @@
             if (bActiveTxn) {
                 abort(e, e, mdTxnCtx);
             }
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseReadLatch();
         }
@@ -1463,7 +1468,7 @@
             MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
         } catch (Exception e) {
             abort(e, e, mdTxnCtx);
-            throw new AlgebricksException(e);
+            throw e;
         } finally {
             releaseWriteLatch();
         }
@@ -1502,8 +1507,7 @@
         return format;
     }
 
-    private String getActiveDataverseName(String dataverse)
-            throws AlgebricksException {
+    private String getActiveDataverseName(String dataverse) throws AlgebricksException {
         if (dataverse != null) {
             return dataverse;
         }
@@ -1512,13 +1516,11 @@
         }
         throw new AlgebricksException("dataverse not specified");
     }
-    
-    private String getActiveDataverseName(Identifier dataverse)
-            throws AlgebricksException {
-        return getActiveDataverseName(
-                dataverse != null ? dataverse.getValue() : null);
+
+    private String getActiveDataverseName(Identifier dataverse) throws AlgebricksException {
+        return getActiveDataverseName(dataverse != null ? dataverse.getValue() : null);
     }
-    
+
     private void acquireWriteLatch() {
         MetadataManager.INSTANCE.acquireWriteLatch();
     }
@@ -1543,4 +1545,4 @@
             throw new IllegalStateException(rootE);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/file/DatasetOperations.java b/asterix-app/src/main/java/edu/uci/ics/asterix/file/DatasetOperations.java
index 777ca6f..38e12e2 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/file/DatasetOperations.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/file/DatasetOperations.java
@@ -112,10 +112,10 @@
             throw new AlgebricksException("DROP DATASET: No metadata for dataset " + datasetName);
         }
         if (dataset.getDatasetType() == DatasetType.EXTERNAL) {
-            return new JobSpecification();
+            return JobSpecificationUtils.createJobSpecification();
         }
 
-        JobSpecification specPrimary = new JobSpecification();
+        JobSpecification specPrimary = JobSpecificationUtils.createJobSpecification();
 
         Pair<IFileSplitProvider, AlgebricksPartitionConstraint> splitsAndConstraint = metadataProvider
                 .splitProviderAndPartitionConstraintsForInternalOrFeedDataset(dataset.getDataverseName(), datasetName,
@@ -152,7 +152,7 @@
             throw new AsterixException("Could not find dataset " + datasetName + " in datavetse " + dataverseName);
         }
         ARecordType itemType = (ARecordType) metadata.findType(dataverseName, dataset.getItemTypeName());
-        JobSpecification spec = new JobSpecification();
+        JobSpecification spec = JobSpecificationUtils.createJobSpecification();
         IBinaryComparatorFactory[] comparatorFactories = DatasetUtils.computeKeysBinaryComparatorFactories(dataset,
                 itemType, format.getBinaryComparatorFactoryProvider());
         ITypeTraits[] typeTraits = DatasetUtils.computeTupleTypeTraits(dataset, itemType);
@@ -171,7 +171,7 @@
         //prepare a LocalResourceMetadata which will be stored in NC's local resource repository
         ILocalResourceMetadata localResourceMetadata = new LSMBTreeLocalResourceMetadata(typeTraits,
                 comparatorFactories, blooFilterKeyFields, true, storageProperties.getMemoryComponentPageSize(),
-                storageProperties.getMemoryComponentNumPages());
+                storageProperties.getMemoryComponentNumPages(), fs);
         ILocalResourceFactoryProvider localResourceFactoryProvider = new PersistentLocalResourceFactoryProvider(
                 localResourceMetadata, LocalResource.LSMBTreeResource);
 
@@ -205,7 +205,7 @@
             throw new AsterixException("Cannot load data into dataset  (" + datasetName + ")" + "of type "
                     + dataset.getDatasetType());
         }
-        JobSpecification spec = new JobSpecification();
+        JobSpecification spec = JobSpecificationUtils.createJobSpecification();
 
         ARecordType itemType = (ARecordType) MetadataManager.INSTANCE.getDatatype(mdTxnCtx, dataverseName,
                 dataset.getItemTypeName()).getDatatype();
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/file/DataverseOperations.java b/asterix-app/src/main/java/edu/uci/ics/asterix/file/DataverseOperations.java
index 0654ff7..b71a44a 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/file/DataverseOperations.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/file/DataverseOperations.java
@@ -11,7 +11,7 @@
 
 public class DataverseOperations {
     public static JobSpecification createDropDataverseJobSpec(Dataverse dataverse, AqlMetadataProvider metadata) {
-        JobSpecification jobSpec = new JobSpecification();
+        JobSpecification jobSpec = JobSpecificationUtils.createJobSpecification();
         Pair<IFileSplitProvider, AlgebricksPartitionConstraint> splitsAndConstraint = metadata
                 .splitProviderAndPartitionConstraintsForDataverse(dataverse.getDataverseName());
         FileRemoveOperatorDescriptor frod = new FileRemoveOperatorDescriptor(jobSpec, splitsAndConstraint.first);
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/file/FeedOperations.java b/asterix-app/src/main/java/edu/uci/ics/asterix/file/FeedOperations.java
index f9bd2d5..27b32f8 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/file/FeedOperations.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/file/FeedOperations.java
@@ -93,7 +93,7 @@
             throw new AsterixException("Operation not support for dataset type  " + dataset.getDatasetType());
         }
 
-        JobSpecification spec = new JobSpecification();
+        JobSpecification spec = JobSpecificationUtils.createJobSpecification();
         IOperatorDescriptor feedMessenger;
         AlgebricksPartitionConstraint messengerPc;
 
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/file/IndexOperations.java b/asterix-app/src/main/java/edu/uci/ics/asterix/file/IndexOperations.java
index 90a1ef0..1452c04 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/file/IndexOperations.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/file/IndexOperations.java
@@ -45,7 +45,7 @@
         String datasetName = indexDropStmt.getDatasetName();
         String indexName = indexDropStmt.getIndexName();
 
-        JobSpecification spec = new JobSpecification();
+        JobSpecification spec = JobSpecificationUtils.createJobSpecification();
 
         Pair<IFileSplitProvider, AlgebricksPartitionConstraint> splitsAndConstraint = metadataProvider
                 .splitProviderAndPartitionConstraintsForInternalOrFeedDataset(dataverseName, datasetName, indexName);
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/file/JobSpecificationUtils.java b/asterix-app/src/main/java/edu/uci/ics/asterix/file/JobSpecificationUtils.java
new file mode 100644
index 0000000..fa0a40f
--- /dev/null
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/file/JobSpecificationUtils.java
@@ -0,0 +1,16 @@
+package edu.uci.ics.asterix.file;
+
+import edu.uci.ics.asterix.common.config.AsterixCompilerProperties;
+import edu.uci.ics.asterix.om.util.AsterixAppContextInfo;
+import edu.uci.ics.hyracks.api.job.JobSpecification;
+
+public class JobSpecificationUtils {
+    public static JobSpecification createJobSpecification() {
+        JobSpecification spec = new JobSpecification();
+        AsterixCompilerProperties compilerProperties = AsterixAppContextInfo.getInstance().getCompilerProperties();
+        int frameSize = compilerProperties.getFrameSize();
+        spec.setFrameSize(frameSize);
+
+        return spec;
+    }
+}
\ No newline at end of file
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryBTreeCreator.java b/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryBTreeCreator.java
index fb83871..71a268c 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryBTreeCreator.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryBTreeCreator.java
@@ -34,13 +34,14 @@
 
     @Override
     public JobSpecification buildCreationJobSpec() throws AsterixException, AlgebricksException {
-        JobSpecification spec = new JobSpecification();
+        JobSpecification spec = JobSpecificationUtils.createJobSpecification();
 
         AsterixStorageProperties storageProperties = propertiesProvider.getStorageProperties();
         //prepare a LocalResourceMetadata which will be stored in NC's local resource repository
         ILocalResourceMetadata localResourceMetadata = new LSMBTreeLocalResourceMetadata(
                 secondaryRecDesc.getTypeTraits(), secondaryComparatorFactories, secondaryBloomFilterKeyFields, false,
-                storageProperties.getMemoryComponentPageSize(), storageProperties.getMemoryComponentNumPages());
+                storageProperties.getMemoryComponentPageSize(), storageProperties.getMemoryComponentNumPages(),
+                secondaryFileSplitProvider.getFileSplits());
         ILocalResourceFactoryProvider localResourceFactoryProvider = new PersistentLocalResourceFactoryProvider(
                 localResourceMetadata, LocalResource.LSMBTreeResource);
 
@@ -64,7 +65,7 @@
 
     @Override
     public JobSpecification buildLoadingJobSpec() throws AsterixException, AlgebricksException {
-        JobSpecification spec = new JobSpecification();
+        JobSpecification spec = JobSpecificationUtils.createJobSpecification();
 
         // Create dummy key provider for feeding the primary index scan. 
         AbstractOperatorDescriptor keyProviderOp = createDummyKeyProviderOp(spec);
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryIndexCreator.java b/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryIndexCreator.java
index 677eb23..b79102b 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryIndexCreator.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryIndexCreator.java
@@ -76,7 +76,8 @@
 import edu.uci.ics.hyracks.storage.am.lsm.btree.dataflow.LSMBTreeDataflowHelperFactory;
 
 @SuppressWarnings("rawtypes")
-// TODO: We should eventually have a hierarchy of classes that can create all possible index job specs, 
+// TODO: We should eventually have a hierarchy of classes that can create all
+// possible index job specs,
 // not just for creation.
 public abstract class SecondaryIndexCreator {
     protected final PhysicalOptimizationConfig physOptConf;
@@ -336,16 +337,13 @@
         for (int i = 0; i < numSecondaryKeyFields + numPrimaryKeys; i++) {
             fieldPermutation[i] = i;
         }
-        Pair<IFileSplitProvider, AlgebricksPartitionConstraint> secondarySplitsAndConstraint = metadataProvider
-                .splitProviderAndPartitionConstraintsForInternalOrFeedDataset(dataverseName, datasetName,
-                        secondaryIndexName);
         TreeIndexBulkLoadOperatorDescriptor treeIndexBulkLoadOp = new TreeIndexBulkLoadOperatorDescriptor(spec,
                 AsterixRuntimeComponentsProvider.LSMBTREE_PROVIDER, AsterixRuntimeComponentsProvider.LSMBTREE_PROVIDER,
-                secondarySplitsAndConstraint.first, secondaryRecDesc.getTypeTraits(), secondaryComparatorFactories,
+                secondaryFileSplitProvider, secondaryRecDesc.getTypeTraits(), secondaryComparatorFactories,
                 secondaryBloomFilterKeyFields, fieldPermutation, fillFactor, false, numElementsHint,
                 dataflowHelperFactory, NoOpOperationCallbackFactory.INSTANCE);
         AlgebricksPartitionConstraintHelper.setPartitionConstraintInJobSpec(spec, treeIndexBulkLoadOp,
-                secondarySplitsAndConstraint.second);
+                secondaryPartitionConstraint);
         return treeIndexBulkLoadOp;
     }
 
@@ -365,7 +363,8 @@
         }
         ICopyEvaluatorFactory selectCond = null;
         if (numSecondaryKeyFields > 1) {
-            // Create conjunctive condition where all secondary index keys must satisfy 'is not null'.
+            // Create conjunctive condition where all secondary index keys must
+            // satisfy 'is not null'.
             AndDescriptor andDesc = new AndDescriptor();
             selectCond = andDesc.createEvaluatorFactory(andArgsEvalFactories);
         } else {
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryInvertedIndexCreator.java b/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryInvertedIndexCreator.java
index a2e28da..0e5612a 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryInvertedIndexCreator.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryInvertedIndexCreator.java
@@ -150,14 +150,14 @@
 
     @Override
     public JobSpecification buildCreationJobSpec() throws AsterixException, AlgebricksException {
-        JobSpecification spec = new JobSpecification();
+        JobSpecification spec = JobSpecificationUtils.createJobSpecification();
 
         AsterixStorageProperties storageProperties = propertiesProvider.getStorageProperties();
         //prepare a LocalResourceMetadata which will be stored in NC's local resource repository
         ILocalResourceMetadata localResourceMetadata = new LSMInvertedIndexLocalResourceMetadata(invListsTypeTraits,
                 primaryComparatorFactories, tokenTypeTraits, tokenComparatorFactories, tokenizerFactory,
                 storageProperties.getMemoryComponentPageSize(), storageProperties.getMemoryComponentNumPages(),
-                isPartitioned);
+                isPartitioned, secondaryFileSplitProvider.getFileSplits());
         ILocalResourceFactoryProvider localResourceFactoryProvider = new PersistentLocalResourceFactoryProvider(
                 localResourceMetadata, LocalResource.LSMInvertedIndexResource);
 
@@ -176,7 +176,7 @@
 
     @Override
     public JobSpecification buildLoadingJobSpec() throws AsterixException, AlgebricksException {
-        JobSpecification spec = new JobSpecification();
+        JobSpecification spec = JobSpecificationUtils.createJobSpecification();
 
         // Create dummy key provider for feeding the primary index scan.
         AbstractOperatorDescriptor keyProviderOp = createDummyKeyProviderOp(spec);
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryRTreeCreator.java b/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryRTreeCreator.java
index ad61cbe..1e452d8 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryRTreeCreator.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryRTreeCreator.java
@@ -57,7 +57,7 @@
 
     @Override
     public JobSpecification buildCreationJobSpec() throws AsterixException, AlgebricksException {
-        JobSpecification spec = new JobSpecification();
+        JobSpecification spec = JobSpecificationUtils.createJobSpecification();
 
         AsterixStorageProperties storageProperties = propertiesProvider.getStorageProperties();
         //prepare a LocalResourceMetadata which will be stored in NC's local resource repository
@@ -65,7 +65,7 @@
                 secondaryRecDesc.getTypeTraits(), secondaryComparatorFactories, primaryComparatorFactories,
                 valueProviderFactories, RTreePolicyType.RTREE, AqlMetadataProvider.proposeLinearizer(keyType,
                         secondaryComparatorFactories.length), storageProperties.getMemoryComponentPageSize(),
-                storageProperties.getMemoryComponentNumPages());
+                storageProperties.getMemoryComponentNumPages(), secondaryFileSplitProvider.getFileSplits());
         ILocalResourceFactoryProvider localResourceFactoryProvider = new PersistentLocalResourceFactoryProvider(
                 localResourceMetadata, LocalResource.LSMRTreeResource);
 
@@ -135,7 +135,7 @@
 
     @Override
     public JobSpecification buildLoadingJobSpec() throws AsterixException, AlgebricksException {
-        JobSpecification spec = new JobSpecification();
+        JobSpecification spec = JobSpecificationUtils.createJobSpecification();
 
         // Create dummy key provider for feeding the primary index scan. 
         AbstractOperatorDescriptor keyProviderOp = createDummyKeyProviderOp(spec);
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/hyracks/bootstrap/CCApplicationEntryPoint.java b/asterix-app/src/main/java/edu/uci/ics/asterix/hyracks/bootstrap/CCApplicationEntryPoint.java
index 8019a41..5d4f6ec 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/hyracks/bootstrap/CCApplicationEntryPoint.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/hyracks/bootstrap/CCApplicationEntryPoint.java
@@ -54,6 +54,7 @@
         webServer.start();
         setupJSONAPIServer(externalProperties);
         jsonAPIServer.start();
+        ccAppCtx.addClusterLifecycleListener(ClusterLifecycleListener.INSTANCE);
     }
 
     @Override
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/hyracks/bootstrap/ClusterLifecycleListener.java b/asterix-app/src/main/java/edu/uci/ics/asterix/hyracks/bootstrap/ClusterLifecycleListener.java
new file mode 100644
index 0000000..e8a1ad2
--- /dev/null
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/hyracks/bootstrap/ClusterLifecycleListener.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.hyracks.bootstrap;
+
+import java.util.Map;
+import java.util.Set;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import edu.uci.ics.asterix.om.util.AsterixClusterProperties;
+import edu.uci.ics.hyracks.api.application.IClusterLifecycleListener;
+
+public class ClusterLifecycleListener implements IClusterLifecycleListener {
+
+    public static ClusterLifecycleListener INSTANCE = new ClusterLifecycleListener();
+
+    private ClusterLifecycleListener() {
+    }
+
+    private static final Logger LOGGER = Logger.getLogger(ClusterLifecycleListener.class.getName());
+
+    @Override
+    public void notifyNodeJoin(String nodeId, Map<String, String> ncConfiguration) {
+        if (LOGGER.isLoggable(Level.INFO)) {
+            LOGGER.info("NC: " + nodeId + " joined");
+        }
+        AsterixClusterProperties.INSTANCE.addNCConfiguration(nodeId, ncConfiguration);
+    }
+
+    public void notifyNodeFailure(Set<String> deadNodeIds) {
+        for (String deadNode : deadNodeIds) {
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info("NC: " + deadNode + " left");
+            }
+            AsterixClusterProperties.INSTANCE.removeNCConfiguration(deadNode);
+        }
+
+    }
+
+}
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/result/ResultUtils.java b/asterix-app/src/main/java/edu/uci/ics/asterix/result/ResultUtils.java
index 32f17b2..44a54e0 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/result/ResultUtils.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/result/ResultUtils.java
@@ -14,14 +14,22 @@
  */
 package edu.uci.ics.asterix.result;
 
+import java.io.BufferedReader;
 import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
 import java.io.PrintWriter;
+import java.io.StringWriter;
 import java.nio.ByteBuffer;
 
 import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
 
+import com.sun.el.parser.ParseException;
+
+import edu.uci.ics.asterix.api.http.servlet.APIServlet;
+import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
 import edu.uci.ics.hyracks.api.comm.IFrameTupleAccessor;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.dataflow.common.comm.util.ByteBufferInputStream;
@@ -51,13 +59,18 @@
         return resultRecords;
     }
 
-    public static JSONObject getErrorResponse(int errorCode, String errorMessage) {
+    public static JSONObject getErrorResponse(int errorCode, String errorMessage, String errorSummary,
+            String errorStackTrace) {
         JSONObject errorResp = new JSONObject();
         JSONArray errorArray = new JSONArray();
         errorArray.put(errorCode);
         errorArray.put(errorMessage);
         try {
             errorResp.put("error-code", errorArray);
+            if (!errorSummary.equals(""))
+                errorResp.put("summary", errorSummary);
+            if (!errorStackTrace.equals(""))
+                errorResp.put("stacktrace", errorStackTrace);
         } catch (JSONException e) {
             // TODO(madhusudancs): Figure out what to do when JSONException occurs while building the results.
         }
@@ -65,39 +78,137 @@
     }
 
     public static void prettyPrintHTML(PrintWriter out, JSONObject jsonResultObj) {
-        JSONArray resultsWrapper;
-        JSONArray resultsArray;
         try {
-            resultsWrapper = jsonResultObj.getJSONArray("results");
-            for (int i = 0; i < resultsWrapper.length(); i++) {
-                resultsArray = resultsWrapper.getJSONArray(i);
-                for (int j = 0; j < resultsArray.length(); j++) {
-                    out.print(resultsArray.getString(j));
-                }
+            JSONArray resultsArray = jsonResultObj.getJSONArray("results");
+            for (int i = 0; i < resultsArray.length(); i++) {
+                out.print(resultsArray.getString(i));
             }
         } catch (JSONException e) {
             // TODO(madhusudancs): Figure out what to do when JSONException occurs while building the results.
         }
     }
 
+    public static void webUIErrorHandler(PrintWriter out, Exception e) {
+        String errorTemplate = "%s\n%s\n%s";
+        try {
+            String resourcePath = "/webui/errortemplate.html";
+            InputStream is = APIServlet.class.getResourceAsStream(resourcePath);
+            InputStreamReader isr = new InputStreamReader(is);
+            StringBuilder sb = new StringBuilder();
+            BufferedReader br = new BufferedReader(isr);
+            String line = br.readLine();
+
+            while (line != null) {
+                sb.append(line);
+                line = br.readLine();
+            }
+            errorTemplate = sb.toString();
+        } catch (IOException ioe) {
+            // If there is an IOException reading the error template html file, default value of error template is used.
+        }
+
+        String errorOutput = String.format(errorTemplate, extractErrorMessage(e), extractErrorSummary(e),
+                extractFullStackTrace(e));
+        out.println(errorOutput);
+    }
+
+    public static void apiErrorHandler(PrintWriter out, Exception e) {
+        int errorCode = 99;
+        if (e instanceof ParseException) {
+            errorCode = 2;
+        } else if (e instanceof AlgebricksException) {
+            errorCode = 3;
+        } else if (e instanceof HyracksDataException) {
+            errorCode = 4;
+        }
+
+        JSONObject errorResp = ResultUtils.getErrorResponse(errorCode, extractErrorMessage(e), extractErrorSummary(e),
+                extractFullStackTrace(e));
+        out.write(errorResp.toString());
+    }
+
+    public static String buildParseExceptionMessage(Throwable e, String query) {
+        StringBuilder errorMessage = new StringBuilder();
+        String message = e.getMessage();
+        message = message.replace("<", "&lt");
+        message = message.replace(">", "&gt");
+        errorMessage.append("SyntaxError:" + message + "\n");
+        int pos = message.indexOf("line");
+        if (pos > 0) {
+            int columnPos = message.indexOf(",", pos + 1 + "line".length());
+            int lineNo = Integer.parseInt(message.substring(pos + "line".length() + 1, columnPos));
+            String[] lines = query.split("\n");
+            if (lineNo >= lines.length) {
+                errorMessage.append("===> &ltBLANK LINE&gt \n");
+            } else {
+                String line = lines[lineNo - 1];
+                errorMessage.append("==> " + line);
+            }
+        }
+        return errorMessage.toString();
+    }
+
+    private static Throwable getRootCause(Throwable cause) {
+        Throwable nextCause = cause.getCause();
+        while (nextCause != null) {
+            cause = nextCause;
+            nextCause = cause.getCause();
+        }
+        return cause;
+    }
+
     /**
-     * extract meaningful part of a stack trace:
+     * Extract the message in the root cause of the stack trace:
+     * 
+     * @param e
+     * @return error message string.
+     */
+    private static String extractErrorMessage(Throwable e) {
+        Throwable cause = getRootCause(e);
+
+        String exceptionClassName = "";
+        String[] messageSplits = cause.toString().split(":");
+        if (messageSplits.length > 1) {
+            String fullyQualifiedExceptionClassName = messageSplits[0];
+            System.out.println(fullyQualifiedExceptionClassName);
+            String[] hierarchySplits = fullyQualifiedExceptionClassName.split("\\.");
+            if (hierarchySplits.length > 0) {
+                exceptionClassName = hierarchySplits[hierarchySplits.length - 1];
+            }
+        }
+        return cause.getLocalizedMessage() + " [" + exceptionClassName + "]";
+    }
+
+    /**
+     * Extract the meaningful part of a stack trace:
      * a. the causes in the stack trace hierarchy
      * b. the top exception for each cause
      * 
      * @param e
      * @return the contacted message containing a and b.
      */
-    public static String extractErrorMessage(Throwable e) {
+    private static String extractErrorSummary(Throwable e) {
         StringBuilder errorMessageBuilder = new StringBuilder();
         Throwable cause = e;
+        errorMessageBuilder.append(cause.getLocalizedMessage());
         while (cause != null) {
-            StackTraceElement[] stackTraceElements = e.getStackTrace();
-            errorMessageBuilder.append(cause.toString());
-            errorMessageBuilder.append(stackTraceElements.length > 0 ? "\n at " + stackTraceElements[0] : "");
-            errorMessageBuilder.append("\n");
+            StackTraceElement[] stackTraceElements = cause.getStackTrace();
+            errorMessageBuilder.append(stackTraceElements.length > 0 ? "\n caused by: " + stackTraceElements[0] : "");
             cause = cause.getCause();
         }
         return errorMessageBuilder.toString();
     }
+
+    /**
+     * Extract the full stack trace:
+     * 
+     * @param e
+     * @return the string containing the full stack trace of the error.
+     */
+    private static String extractFullStackTrace(Throwable e) {
+        StringWriter stringWriter = new StringWriter();
+        PrintWriter printWriter = new PrintWriter(stringWriter);
+        e.printStackTrace(printWriter);
+        return stringWriter.toString();
+    }
 }
diff --git a/asterix-app/src/main/resources/webui/errortemplate.html b/asterix-app/src/main/resources/webui/errortemplate.html
new file mode 100644
index 0000000..8c39e03
--- /dev/null
+++ b/asterix-app/src/main/resources/webui/errortemplate.html
@@ -0,0 +1,38 @@
+<div class="accordion" id="errorblock">
+  <div class="accordion-group">
+    <div class="accordion-heading">
+      <a class="accordion-toggle" data-toggle="collapse" data-parent="#errorblock" href="#levelOne">
+        Message
+      </a>
+    </div>
+    <div id="levelOne" class="accordion-body collapse in">
+      <div class="accordion-inner">
+        <pre class="error">%s</pre>
+      </div>
+    </div>
+  </div>
+  <div class="accordion-group">
+    <div class="accordion-heading">
+      <a class="accordion-toggle" data-toggle="collapse" data-parent="#errorblock" href="#levelTwo">
+        Summary
+      </a>
+    </div>
+    <div id="levelTwo" class="accordion-body collapse">
+      <div class="accordion-inner">
+        <pre class="error">%s</pre>
+      </div>
+    </div>
+  </div>
+  <div class="accordion-group">
+    <div class="accordion-heading">
+      <a class="accordion-toggle" data-toggle="collapse" data-parent="#errorblock" href="#levelThree">
+        Full Stack Trace
+      </a>
+    </div>
+    <div id="levelThree" class="accordion-body collapse">
+      <div class="accordion-inner">
+        <pre class="error">%s</pre>
+      </div>
+    </div>
+  </div>
+</div>
diff --git a/asterix-app/src/main/resources/webui/querytemplate.html b/asterix-app/src/main/resources/webui/querytemplate.html
index 95323bb..40ce161 100644
--- a/asterix-app/src/main/resources/webui/querytemplate.html
+++ b/asterix-app/src/main/resources/webui/querytemplate.html
@@ -14,23 +14,122 @@
 <link href="/webui/static/css/style.css" rel="stylesheet" type="text/css" />
 
 <script type="text/javascript">
-$(document).ready(function(){
-   $("form#queryform").submit(function() {
-     $('#output-message').html("");
-     $.post("/", $("form#queryform").serialize(), function(data) {
-       $('#output-message').html(data);
-     });
-     return false;
-   });
+$(document).ready(function() {
+
+    var optionButtonSize = $('#checkboxes-on').width();
+    $('#clear-query-button, #run-btn').width(optionButtonSize);
+
+    $('#checkboxes-on').click(function() {
+        /* Displays a checkmark to indicate selection/clearing */
+        if ($('#opts').is(":visible")) {
+            $('#opts').hide();
+            $('#queryform :input').prop('checked', false);
+        } else {
+            $('#opts').show();    
+            $('#queryform :input').prop('checked', true);
+        }    
+        return false;
+    });
+
+    $('#clear-query-button').click(function() {
+        $("#qry").val('');
+        return false;
+    });
+
+    $('form#queryform :input').click( function () {
+        /* Hides selection check on uncheck, shows when all 5 selected */
+        if ($(this).val()) {
+            if ($(this).is(':checked') && $('input[type=checkbox]').filter(':checked').length == 5) {
+                $('#opts').show();
+            } else {
+                $('#opts').hide();
+            }
+        }
+    });
+
+    $("form#queryform").submit(function() {
+        $('#output-message').html("");
+        $.post("/", $("form#queryform").serialize(), function(data) {
+
+            var resSet = 0;
+            var resPattern = /<h4>Results:<\/h4>/g;
+            var durPattern = /<PRE>Duration/g;
+            var errorPattern = /<div class="accordion" id="errorblock">/g;
+            var resultCount = data.match(resPattern);
+
+            if (!resPattern.test(data) && errorPattern.test(data)) {
+                $('#output-heading').html('Error');
+                $('#output-heading').addClass('error');
+                $('#output-message').html(data);
+            } else {
+                $('#output-heading').html('Output');
+                $('#output-heading').removeClass('error');
+                if (resultCount.length <= 1) {
+                    $('#output-message').html(data);
+                } else {
+                    var splitData = data.split('<PRE>Duration');
+                    var results = splitData[0].split('<h4>');
+                    var components = results.slice(1, results.length);
+                    var sections = components.length / resultCount.length;
+
+                    for (resSet = 0; resSet < resultCount.length; resSet++) {
+
+                        $('#output-message').append('<h4>' + components[(resSet+1)*sections - 1]);
+
+                        if (sections > 1) {
+                            var resNum = resSet + 1;
+                            $('<button/>')
+                                .attr("class", "btn")
+                                .attr("data-toggle", "collapse")
+                                .attr("data-target", "#collapse" + resSet)
+                                .css("margin-bottom", "1em")
+                                .html('Result Plan #' + resNum + '<i id="ibtn' + resSet + '" class="icon-plus extarget"></i>')
+                                .appendTo('#output-message');
+
+                            $('<div/>')
+                                .attr("id", "collapse" + resSet)
+                                .attr("class", "collapse in")
+                                .appendTo('#output-message');
+
+                            for (var c = 0; c < sections - 1; c++) {
+                                var pos = resSet*sections + c;
+                                $('#collapse' + resSet).append('<h4>' + components[pos]);
+                            }
+
+                            /* Placeholder for future on show/hide result plan behavior
+                            $('#collapse' + resSet).on('show', function() {
+                            }).on('hide', function() {
+                            });
+                            */
+
+                            $('#output-message').append("<hr/>");
+                        }
+
+                    }
+                    $('#output-message').append('<PRE>Duration' + splitData[1]);
+                }
+
+            }
+
+            var contentString = data.toString();
+            if (contentString.indexOf("<PRE>Duration") !== -1) {
+                $('<div/>')
+                    .addClass("alert alert-success")
+                    .html("Success: Query Complete")
+                    .appendTo('#output-message');
+            }
+        });
+        return false;
+    });
 });
 </script>
 
 <meta charset=utf-8 />
-<title>ASTERIX Demo</title>
+<title>AsterixDB Web Interface</title>
 </head>
 
 <body>
-  <div class="navbar navbar-inverse navbar-fixed-top">
+  <div class="navbar navbar-fixed-top">
     <div class="navbar-inner">
       <div class="container">
         <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
@@ -38,12 +137,18 @@
           <span class="icon-bar"></span>
           <span class="icon-bar"></span>
         </a>
-        <a class="brand" href="#">ASTERIX</a>
+
+        <!-- Temporary logo placeholder -->
+        <a class="brand" href="#"><img src="/webui/static/img/finalasterixlogo.png"></a>
+
         <div class="nav-collapse collapse">
           <ul class="nav">
-            <li><a href="http://code.google.com/p/asterixdb/source/browse/">Open source</a></li>
-            <li><a href="http://code.google.com/p/asterixdb/issues/list">File issues</a></li>
-            <li><a href="https://groups.google.com/forum/?fromgroups#!forum/asterixdb-userst">Contact</a></li>
+            <li><a href="http://code.google.com/p/asterixdb/" target="_blank">
+                    Open source<img class="extarget" src="/webui/static/img/targetlink.png"/></a></li>
+            <li><a href="http://code.google.com/p/asterixdb/issues/list" target="_blank">
+                    File issues<img class="extarget" src="/webui/static/img/targetlink.png"/></a></li>
+            <li><a href="https://groups.google.com/forum/?fromgroups#!forum/asterixdb-users" target="_blank">
+                    Contact<img class="extarget" src="/webui/static/img/targetlink.png"/></a></li>
           </ul>
         </div><!--/.nav-collapse -->
       </div>
@@ -53,42 +158,48 @@
   <div class="content">
     <div class="container">
       <div class="row-fluid">
-        <div class="span6">
-          <form id="queryform" class="form-horizontal" method="post">
-            <div>
-              <label class="query">Query</label>
-              <textarea rows="10" name="query" class="query" value="%s" placeholder="Type your AQL query ..."></textarea>
-            </div>
-            <div>
-              <label class="checkbox"><input type="checkbox" checked="checked" name="print-expr-tree" value="true" /> Print parsed expressions</label>
-              <label class="checkbox"><input type="checkbox" checked="checked" name="print-rewritten-expr-tree" value="true" /> Print rewritten expressions</label>
-            </div>
-            <div>
-              <label class="checkbox"><input type="checkbox" checked="checked" name="print-logical-plan" value="true" /> Print logical plan</label>
-              <label class="checkbox"><input type="checkbox" checked="checked" name="print-optimized-logical-plan" value="true" /> Print optimized logical plan</label>
-            </div>
-            <div>
-              <label class="checkbox"><input type="checkbox" checked="checked" name="print-job" value="true" /> Print hyracks job</label>
-            </div>
-            <button type="submit" class="btn btn-danger">Execute</button>
-          </form>
-        </div>
 
         <div class="span6">
+
+          <form id="queryform" class="form-horizontal" method="post">
+            <div style="margin-bottom: 1em;">
+              <label class="query">Query</label>
+              <textarea rows="10" id="qry" name="query" class="query" value="%s" placeholder="Type your AQL query ..."></textarea>
+            </div>
+            
+          <div class="btn-group">
+            <button id="checkboxes-on" class="btn">
+                <i id="opts" class="icon-ok" style="display:none;"></i>Select Options</button>
+            <button id="clear-query-button" class="btn">Clear Query</button>
+            <!-- <button id="checkboxes-off" class="btn">Clear All Options</button> -->
+            <button type="submit" id="run-btn" class="btn btn-custom-darken">Run</button>
+          </div>
+
+            <div>
+              <label class="checkbox optlabel"><input type="checkbox" name="print-expr-tree" value="true" /> Print parsed expressions</label>
+              <label class="checkbox optlabel"><input type="checkbox" name="print-rewritten-expr-tree" value="true" /> Print rewritten expressions</label>
+              <label class="checkbox optlabel"><input type="checkbox" name="print-logical-plan" value="true" /> Print logical plan</label>
+              <label class="checkbox optlabel"><input type="checkbox" name="print-optimized-logical-plan" value="true" /> Print optimized logical plan</label>
+              <label class="checkbox optlabel"><input type="checkbox" name="print-job" value="true" /> Print Hyracks job</label>
+            </div>
+          </form>
+       </div>
+
+       <div class="span6">
          <div class="output">
-           <label class="heading">Output</label>
+           <label id="output-heading" class="heading">Output</label>
            <div id="output-message" class="message">
            </div>
          </div>
        </div>
+
       </div>
     </div>
-  </div>
+</div>
   <div class="footer">
     <section class="line"><hr></section>
     <section class="content">
       <section class="left">
-        Developed by ASTERIX group
       </section>
       <section class="right">
         &copy; Copyright 2013 University of California, Irvine
diff --git a/asterix-app/src/main/resources/webui/static/css/bootstrap.min.css b/asterix-app/src/main/resources/webui/static/css/bootstrap.min.css
index c10c7f4..518ad8e 100644
--- a/asterix-app/src/main/resources/webui/static/css/bootstrap.min.css
+++ b/asterix-app/src/main/resources/webui/static/css/bootstrap.min.css
@@ -1,9 +1,874 @@
 /*!
- * Bootstrap v2.3.1
+ * Bootstrap v2.3.2
  *
  * Copyright 2012 Twitter, Inc
  * Licensed under the Apache License v2.0
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Designed and built with all the love in the world @twitter by @mdo and @fat.
- */.clearfix{*zoom:1}.clearfix:before,.clearfix:after{display:table;line-height:0;content:""}.clearfix:after{clear:both}.hide-text{font:0/0 a;color:transparent;text-shadow:none;background-color:transparent;border:0}.input-block-level{display:block;width:100%;min-height:30px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}article,aside,details,figcaption,figure,footer,header,hgroup,nav,section{display:block}audio,canvas,video{display:inline-block;*display:inline;*zoom:1}audio:not([controls]){display:none}html{font-size:100%;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%}a:focus{outline:thin dotted #333;outline:5px auto -webkit-focus-ring-color;outline-offset:-2px}a:hover,a:active{outline:0}sub,sup{position:relative;font-size:75%;line-height:0;vertical-align:baseline}sup{top:-0.5em}sub{bottom:-0.25em}img{width:auto\9;height:auto;max-width:100%;vertical-align:middle;border:0;-ms-interpolation-mode:bicubic}#map_canvas img,.google-maps 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.container{width:940px}.span12{width:940px}.span11{width:860px}.span10{width:780px}.span9{width:700px}.span8{width:620px}.span7{width:540px}.span6{width:460px}.span5{width:380px}.span4{width:300px}.span3{width:220px}.span2{width:140px}.span1{width:60px}.offset12{margin-left:980px}.offset11{margin-left:900px}.offset10{margin-left:820px}.offset9{margin-left:740px}.offset8{margin-left:660px}.offset7{margin-left:580px}.offset6{margin-left:500px}.offset5{margin-left:420px}.offset4{margin-left:340px}.offset3{margin-left:260px}.offset2{margin-left:180px}.offset1{margin-left:100px}.row-fluid{width:100%;*zoom:1}.row-fluid:before,.row-fluid:after{display:table;line-height:0;content:""}.row-fluid:after{clear:both}.row-fluid [class*="span"]{display:block;float:left;width:100%;min-height:30px;margin-left:2.127659574468085%;*margin-left:2.074468085106383%;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}.row-fluid [class*="span"]:first-child{margin-left:0}.row-fluid 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+button.close{padding:0;cursor:pointer;background:transparent;border:0;-webkit-appearance:none;}
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+.pull-left{float:left;}
+.hide{display:none;}
+.show{display:block;}
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+.fade{opacity:0;-webkit-transition:opacity 0.15s linear;-moz-transition:opacity 0.15s linear;-o-transition:opacity 0.15s linear;transition:opacity 0.15s linear;}.fade.in{opacity:1;}
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+@-ms-viewport{width:device-width;}.hidden{display:none;visibility:hidden;}
+.visible-phone{display:none !important;}
+.visible-tablet{display:none !important;}
+.hidden-desktop{display:none !important;}
+.visible-desktop{display:inherit !important;}
+@media (min-width:768px) and (max-width:979px){.hidden-desktop{display:inherit !important;} .visible-desktop{display:none !important ;} .visible-tablet{display:inherit !important;} .hidden-tablet{display:none !important;}}@media (max-width:767px){.hidden-desktop{display:inherit !important;} .visible-desktop{display:none !important;} .visible-phone{display:inherit !important;} .hidden-phone{display:none !important;}}.visible-print{display:none !important;}
+@media print{.visible-print{display:inherit !important;} .hidden-print{display:none !important;}}@media (max-width:767px){body{padding-left:20px;padding-right:20px;} .navbar-fixed-top,.navbar-fixed-bottom,.navbar-static-top{margin-left:-20px;margin-right:-20px;} .container-fluid{padding:0;} .dl-horizontal dt{float:none;clear:none;width:auto;text-align:left;} .dl-horizontal dd{margin-left:0;} .container{width:auto;} .row-fluid{width:100%;} .row,.thumbnails{margin-left:0;} .thumbnails>li{float:none;margin-left:0;} [class*="span"],.uneditable-input[class*="span"],.row-fluid [class*="span"]{float:none;display:block;width:100%;margin-left:0;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;} .span12,.row-fluid .span12{width:100%;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;} .row-fluid [class*="offset"]:first-child{margin-left:0;} .input-large,.input-xlarge,.input-xxlarge,input[class*="span"],select[class*="span"],textarea[class*="span"],.uneditable-input{display:block;width:100%;min-height:30px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;} .input-prepend input,.input-append input,.input-prepend input[class*="span"],.input-append input[class*="span"]{display:inline-block;width:auto;} .controls-row [class*="span"]+[class*="span"]{margin-left:0;} .modal{position:fixed;top:20px;left:20px;right:20px;width:auto;margin:0;}.modal.fade{top:-100px;} .modal.fade.in{top:20px;}}@media (max-width:480px){.nav-collapse{-webkit-transform:translate3d(0, 0, 0);} .page-header h1 small{display:block;line-height:20px;} input[type="checkbox"],input[type="radio"]{border:1px solid #ccc;} .form-horizontal .control-label{float:none;width:auto;padding-top:0;text-align:left;} .form-horizontal .controls{margin-left:0;} .form-horizontal .control-list{padding-top:0;} .form-horizontal .form-actions{padding-left:10px;padding-right:10px;} .media .pull-left,.media .pull-right{float:none;display:block;margin-bottom:10px;} .media-object{margin-right:0;margin-left:0;} .modal{top:10px;left:10px;right:10px;} .modal-header .close{padding:10px;margin:-10px;} .carousel-caption{position:static;}}@media (min-width:768px) and (max-width:979px){.row{margin-left:-20px;*zoom:1;}.row:before,.row:after{display:table;content:"";line-height:0;} .row:after{clear:both;} [class*="span"]{float:left;min-height:1px;margin-left:20px;} .container,.navbar-static-top .container,.navbar-fixed-top .container,.navbar-fixed-bottom .container{width:724px;} .span12{width:724px;} .span11{width:662px;} .span10{width:600px;} .span9{width:538px;} .span8{width:476px;} .span7{width:414px;} .span6{width:352px;} .span5{width:290px;} .span4{width:228px;} .span3{width:166px;} .span2{width:104px;} .span1{width:42px;} .offset12{margin-left:764px;} .offset11{margin-left:702px;} .offset10{margin-left:640px;} .offset9{margin-left:578px;} .offset8{margin-left:516px;} .offset7{margin-left:454px;} .offset6{margin-left:392px;} .offset5{margin-left:330px;} .offset4{margin-left:268px;} .offset3{margin-left:206px;} .offset2{margin-left:144px;} .offset1{margin-left:82px;} .row-fluid{width:100%;*zoom:1;}.row-fluid:before,.row-fluid:after{display:table;content:"";line-height:0;} .row-fluid:after{clear:both;} .row-fluid [class*="span"]{display:block;width:100%;min-height:30px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;float:left;margin-left:2.7624309392265194%;*margin-left:2.709239449864817%;} .row-fluid [class*="span"]:first-child{margin-left:0;} .row-fluid .controls-row [class*="span"]+[class*="span"]{margin-left:2.7624309392265194%;} .row-fluid .span12{width:100%;*width:99.94680851063829%;} .row-fluid .span11{width:91.43646408839778%;*width:91.38327259903608%;} .row-fluid .span10{width:82.87292817679558%;*width:82.81973668743387%;} .row-fluid .span9{width:74.30939226519337%;*width:74.25620077583166%;} .row-fluid .span8{width:65.74585635359117%;*width:65.69266486422946%;} .row-fluid .span7{width:57.18232044198895%;*width:57.12912895262725%;} .row-fluid .span6{width:48.61878453038674%;*width:48.56559304102504%;} .row-fluid .span5{width:40.05524861878453%;*width:40.00205712942283%;} .row-fluid .span4{width:31.491712707182323%;*width:31.43852121782062%;} .row-fluid .span3{width:22.92817679558011%;*width:22.87498530621841%;} .row-fluid .span2{width:14.3646408839779%;*width:14.311449394616199%;} .row-fluid .span1{width:5.801104972375691%;*width:5.747913483013988%;} .row-fluid .offset12{margin-left:105.52486187845304%;*margin-left:105.41847889972962%;} .row-fluid .offset12:first-child{margin-left:102.76243093922652%;*margin-left:102.6560479605031%;} .row-fluid .offset11{margin-left:96.96132596685082%;*margin-left:96.8549429881274%;} .row-fluid .offset11:first-child{margin-left:94.1988950276243%;*margin-left:94.09251204890089%;} .row-fluid .offset10{margin-left:88.39779005524862%;*margin-left:88.2914070765252%;} .row-fluid .offset10:first-child{margin-left:85.6353591160221%;*margin-left:85.52897613729868%;} .row-fluid .offset9{margin-left:79.8342541436464%;*margin-left:79.72787116492299%;} .row-fluid .offset9:first-child{margin-left:77.07182320441989%;*margin-left:76.96544022569647%;} .row-fluid .offset8{margin-left:71.2707182320442%;*margin-left:71.16433525332079%;} .row-fluid .offset8:first-child{margin-left:68.50828729281768%;*margin-left:68.40190431409427%;} .row-fluid .offset7{margin-left:62.70718232044199%;*margin-left:62.600799341718584%;} .row-fluid .offset7:first-child{margin-left:59.94475138121547%;*margin-left:59.838368402492065%;} .row-fluid .offset6{margin-left:54.14364640883978%;*margin-left:54.037263430116376%;} .row-fluid .offset6:first-child{margin-left:51.38121546961326%;*margin-left:51.27483249088986%;} .row-fluid .offset5{margin-left:45.58011049723757%;*margin-left:45.47372751851417%;} .row-fluid .offset5:first-child{margin-left:42.81767955801105%;*margin-left:42.71129657928765%;} .row-fluid .offset4{margin-left:37.01657458563536%;*margin-left:36.91019160691196%;} .row-fluid .offset4:first-child{margin-left:34.25414364640884%;*margin-left:34.14776066768544%;} .row-fluid .offset3{margin-left:28.45303867403315%;*margin-left:28.346655695309746%;} .row-fluid .offset3:first-child{margin-left:25.69060773480663%;*margin-left:25.584224756083227%;} .row-fluid .offset2{margin-left:19.88950276243094%;*margin-left:19.783119783707537%;} .row-fluid .offset2:first-child{margin-left:17.12707182320442%;*margin-left:17.02068884448102%;} .row-fluid .offset1{margin-left:11.32596685082873%;*margin-left:11.219583872105325%;} .row-fluid .offset1:first-child{margin-left:8.56353591160221%;*margin-left:8.457152932878806%;} input,textarea,.uneditable-input{margin-left:0;} .controls-row [class*="span"]+[class*="span"]{margin-left:20px;} input.span12,textarea.span12,.uneditable-input.span12{width:710px;} input.span11,textarea.span11,.uneditable-input.span11{width:648px;} input.span10,textarea.span10,.uneditable-input.span10{width:586px;} input.span9,textarea.span9,.uneditable-input.span9{width:524px;} input.span8,textarea.span8,.uneditable-input.span8{width:462px;} input.span7,textarea.span7,.uneditable-input.span7{width:400px;} input.span6,textarea.span6,.uneditable-input.span6{width:338px;} input.span5,textarea.span5,.uneditable-input.span5{width:276px;} input.span4,textarea.span4,.uneditable-input.span4{width:214px;} input.span3,textarea.span3,.uneditable-input.span3{width:152px;} input.span2,textarea.span2,.uneditable-input.span2{width:90px;} input.span1,textarea.span1,.uneditable-input.span1{width:28px;}}@media (min-width:1200px){.row{margin-left:-30px;*zoom:1;}.row:before,.row:after{display:table;content:"";line-height:0;} .row:after{clear:both;} [class*="span"]{float:left;min-height:1px;margin-left:30px;} .container,.navbar-static-top .container,.navbar-fixed-top .container,.navbar-fixed-bottom .container{width:1170px;} .span12{width:1170px;} .span11{width:1070px;} .span10{width:970px;} .span9{width:870px;} .span8{width:770px;} .span7{width:670px;} .span6{width:570px;} .span5{width:470px;} .span4{width:370px;} .span3{width:270px;} .span2{width:170px;} .span1{width:70px;} .offset12{margin-left:1230px;} .offset11{margin-left:1130px;} .offset10{margin-left:1030px;} .offset9{margin-left:930px;} .offset8{margin-left:830px;} .offset7{margin-left:730px;} .offset6{margin-left:630px;} .offset5{margin-left:530px;} .offset4{margin-left:430px;} .offset3{margin-left:330px;} .offset2{margin-left:230px;} .offset1{margin-left:130px;} .row-fluid{width:100%;*zoom:1;}.row-fluid:before,.row-fluid:after{display:table;content:"";line-height:0;} .row-fluid:after{clear:both;} .row-fluid [class*="span"]{display:block;width:100%;min-height:30px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;float:left;margin-left:2.564102564102564%;*margin-left:2.5109110747408616%;} .row-fluid [class*="span"]:first-child{margin-left:0;} .row-fluid .controls-row [class*="span"]+[class*="span"]{margin-left:2.564102564102564%;} .row-fluid .span12{width:100%;*width:99.94680851063829%;} .row-fluid .span11{width:91.45299145299145%;*width:91.39979996362975%;} .row-fluid .span10{width:82.90598290598291%;*width:82.8527914166212%;} .row-fluid .span9{width:74.35897435897436%;*width:74.30578286961266%;} .row-fluid .span8{width:65.81196581196582%;*width:65.75877432260411%;} .row-fluid .span7{width:57.26495726495726%;*width:57.21176577559556%;} .row-fluid .span6{width:48.717948717948715%;*width:48.664757228587014%;} .row-fluid .span5{width:40.17094017094017%;*width:40.11774868157847%;} .row-fluid .span4{width:31.623931623931625%;*width:31.570740134569924%;} .row-fluid .span3{width:23.076923076923077%;*width:23.023731587561375%;} .row-fluid .span2{width:14.52991452991453%;*width:14.476723040552828%;} .row-fluid .span1{width:5.982905982905983%;*width:5.929714493544281%;} .row-fluid .offset12{margin-left:105.12820512820512%;*margin-left:105.02182214948171%;} .row-fluid .offset12:first-child{margin-left:102.56410256410257%;*margin-left:102.45771958537915%;} .row-fluid .offset11{margin-left:96.58119658119658%;*margin-left:96.47481360247316%;} .row-fluid .offset11:first-child{margin-left:94.01709401709402%;*margin-left:93.91071103837061%;} .row-fluid .offset10{margin-left:88.03418803418803%;*margin-left:87.92780505546462%;} .row-fluid .offset10:first-child{margin-left:85.47008547008548%;*margin-left:85.36370249136206%;} .row-fluid .offset9{margin-left:79.48717948717949%;*margin-left:79.38079650845607%;} .row-fluid .offset9:first-child{margin-left:76.92307692307693%;*margin-left:76.81669394435352%;} .row-fluid .offset8{margin-left:70.94017094017094%;*margin-left:70.83378796144753%;} .row-fluid .offset8:first-child{margin-left:68.37606837606839%;*margin-left:68.26968539734497%;} .row-fluid .offset7{margin-left:62.393162393162385%;*margin-left:62.28677941443899%;} .row-fluid .offset7:first-child{margin-left:59.82905982905982%;*margin-left:59.72267685033642%;} .row-fluid .offset6{margin-left:53.84615384615384%;*margin-left:53.739770867430444%;} .row-fluid .offset6:first-child{margin-left:51.28205128205128%;*margin-left:51.175668303327875%;} .row-fluid .offset5{margin-left:45.299145299145295%;*margin-left:45.1927623204219%;} .row-fluid .offset5:first-child{margin-left:42.73504273504273%;*margin-left:42.62865975631933%;} .row-fluid .offset4{margin-left:36.75213675213675%;*margin-left:36.645753773413354%;} .row-fluid .offset4:first-child{margin-left:34.18803418803419%;*margin-left:34.081651209310785%;} .row-fluid .offset3{margin-left:28.205128205128204%;*margin-left:28.0987452264048%;} .row-fluid .offset3:first-child{margin-left:25.641025641025642%;*margin-left:25.53464266230224%;} .row-fluid .offset2{margin-left:19.65811965811966%;*margin-left:19.551736679396257%;} .row-fluid .offset2:first-child{margin-left:17.094017094017094%;*margin-left:16.98763411529369%;} .row-fluid .offset1{margin-left:11.11111111111111%;*margin-left:11.004728132387708%;} .row-fluid .offset1:first-child{margin-left:8.547008547008547%;*margin-left:8.440625568285142%;} input,textarea,.uneditable-input{margin-left:0;} .controls-row [class*="span"]+[class*="span"]{margin-left:30px;} input.span12,textarea.span12,.uneditable-input.span12{width:1156px;} input.span11,textarea.span11,.uneditable-input.span11{width:1056px;} input.span10,textarea.span10,.uneditable-input.span10{width:956px;} input.span9,textarea.span9,.uneditable-input.span9{width:856px;} input.span8,textarea.span8,.uneditable-input.span8{width:756px;} input.span7,textarea.span7,.uneditable-input.span7{width:656px;} input.span6,textarea.span6,.uneditable-input.span6{width:556px;} input.span5,textarea.span5,.uneditable-input.span5{width:456px;} input.span4,textarea.span4,.uneditable-input.span4{width:356px;} input.span3,textarea.span3,.uneditable-input.span3{width:256px;} input.span2,textarea.span2,.uneditable-input.span2{width:156px;} input.span1,textarea.span1,.uneditable-input.span1{width:56px;} .thumbnails{margin-left:-30px;} .thumbnails>li{margin-left:30px;} .row-fluid .thumbnails{margin-left:0;}}@media (max-width:979px){body{padding-top:0;} .navbar-fixed-top,.navbar-fixed-bottom{position:static;} .navbar-fixed-top{margin-bottom:20px;} .navbar-fixed-bottom{margin-top:20px;} .navbar-fixed-top .navbar-inner,.navbar-fixed-bottom .navbar-inner{padding:5px;} .navbar .container{width:auto;padding:0;} .navbar .brand{padding-left:10px;padding-right:10px;margin:0 0 0 -5px;} .nav-collapse{clear:both;} .nav-collapse .nav{float:none;margin:0 0 10px;} .nav-collapse .nav>li{float:none;} .nav-collapse .nav>li>a{margin-bottom:2px;} .nav-collapse .nav>.divider-vertical{display:none;} .nav-collapse .nav .nav-header{color:#777777;text-shadow:none;} .nav-collapse .nav>li>a,.nav-collapse .dropdown-menu a{padding:9px 15px;font-weight:bold;color:#777777;-webkit-border-radius:3px;-moz-border-radius:3px;border-radius:3px;} .nav-collapse .btn{padding:4px 10px 4px;font-weight:normal;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;} .nav-collapse .dropdown-menu li+li a{margin-bottom:2px;} .nav-collapse .nav>li>a:hover,.nav-collapse .nav>li>a:focus,.nav-collapse .dropdown-menu a:hover,.nav-collapse .dropdown-menu a:focus{background-color:#f2f2f2;} .navbar-inverse .nav-collapse .nav>li>a,.navbar-inverse .nav-collapse .dropdown-menu a{color:#999999;} .navbar-inverse .nav-collapse .nav>li>a:hover,.navbar-inverse .nav-collapse .nav>li>a:focus,.navbar-inverse .nav-collapse .dropdown-menu a:hover,.navbar-inverse .nav-collapse .dropdown-menu a:focus{background-color:#111111;} .nav-collapse.in .btn-group{margin-top:5px;padding:0;} .nav-collapse .dropdown-menu{position:static;top:auto;left:auto;float:none;display:none;max-width:none;margin:0 15px;padding:0;background-color:transparent;border:none;-webkit-border-radius:0;-moz-border-radius:0;border-radius:0;-webkit-box-shadow:none;-moz-box-shadow:none;box-shadow:none;} .nav-collapse .open>.dropdown-menu{display:block;} .nav-collapse .dropdown-menu:before,.nav-collapse .dropdown-menu:after{display:none;} .nav-collapse .dropdown-menu .divider{display:none;} .nav-collapse .nav>li>.dropdown-menu:before,.nav-collapse .nav>li>.dropdown-menu:after{display:none;} .nav-collapse .navbar-form,.nav-collapse .navbar-search{float:none;padding:10px 15px;margin:10px 0;border-top:1px solid #f2f2f2;border-bottom:1px solid #f2f2f2;-webkit-box-shadow:inset 0 1px 0 rgba(255,255,255,.1), 0 1px 0 rgba(255,255,255,.1);-moz-box-shadow:inset 0 1px 0 rgba(255,255,255,.1), 0 1px 0 rgba(255,255,255,.1);box-shadow:inset 0 1px 0 rgba(255,255,255,.1), 0 1px 0 rgba(255,255,255,.1);} .navbar-inverse .nav-collapse .navbar-form,.navbar-inverse .nav-collapse .navbar-search{border-top-color:#111111;border-bottom-color:#111111;} .navbar .nav-collapse .nav.pull-right{float:none;margin-left:0;} .nav-collapse,.nav-collapse.collapse{overflow:hidden;height:0;} .navbar .btn-navbar{display:block;} .navbar-static .navbar-inner{padding-left:10px;padding-right:10px;}}@media (min-width:980px){.nav-collapse.collapse{height:auto !important;overflow:visible !important;}}
diff --git a/asterix-app/src/main/resources/webui/static/css/style.css b/asterix-app/src/main/resources/webui/static/css/style.css
index b8688db..a3e411c 100644
--- a/asterix-app/src/main/resources/webui/static/css/style.css
+++ b/asterix-app/src/main/resources/webui/static/css/style.css
@@ -1,6 +1,6 @@
 body {
     background: none repeat scroll 0 0 white;
-    color: #222222;
+    color: black;
     font-family: 'Bitter';
     font-size: 14px;
     line-height: 17px;
@@ -8,13 +8,14 @@
 }
 
 .content {
-    margin-top: 70px;
+    margin-top: 36px;
 }
 
 label.query, label.result {
     font-size: 24px;
     padding-bottom: 10px;
     font-weight: bold;
+    color : #17265a;
 }
 
 div.host {
@@ -34,10 +35,14 @@
 div.right {
 }
 
-button.btn {
-    clear: both;
-    float: left;
-    margin: 20px 0 0 10px;;
+#run-btn {
+}
+
+#select-toggle-holder {
+    border: 1px black;
+    -webkit-border-radius: 5px;
+    -moz-border-radius: 5px;
+    border-radius: 5px;
 }
 
 textarea.query {
@@ -59,12 +64,18 @@
     padding-top: 10px;
 }
 
+#opts {
+    margin-right: 4px;
+}
+
 input[type=text] {
     height: 20px;
 }
 
 pre {
+    overflow-x : auto;
     overflow: auto;
+    overflow-wrap: normal;
     white-space: pre;
 }
 
@@ -73,6 +84,27 @@
     margin-top: 2px;
     padding-bottom: 10px;
     font-weight: bold;
+    color : #17265a;
+}
+
+div.output label.heading.error {
+    color: #E03809; 
+}
+
+div.output h4 {
+    color : #17265a;
+}
+
+a.accordion-toggle {
+    color : #17265a;
+}
+
+.accordion-inner {
+    padding : 0 0 0 0;
+}
+
+#errorblock .accordion-group .accordion-heading a.accordion-toggle {
+    color: #E03809;
 }
 
 div.output .message {
@@ -85,22 +117,7 @@
 }
 
 div.output .message pre.error {
-    -webkit-box-sizing: border-box;
-    -moz-box-sizing: border-box;
-    -ms-box-sizing: border-box;
-    box-sizing: border-box;
-    border-color: rgba(82, 168, 236, 0.8);
-    outline: 0;
-    outline: thin dotted 9;
-
-    -webkit-box-shadow: inset 0 1px 1px rgba(250, 0, 0, 0.075), 0 0 8px rgba(255, 0, 0, 0.8);
-    -moz-box-shadow: inset 0 1px 1px rgba(250, 0, 0, 0.075), 0 0 8px rgba(255, 0, 0, 1.0);
-    box-shadow: inset 0 1px 1px rgba(250, 0, 0, 0.075), 0 0 8px rgba(255, 0, 0, 1.0);
-    color: #000;
-    resize: none;
-    border: 1px solid #eee;
-    margin-top: 7px;
-    padding: 20px 20px 20px 20px;
+   border: 0;
 }
 
 .footer {
@@ -137,3 +154,60 @@
     padding-right: 20px;
     float: right;
 }
+
+.navbar .brand {
+    width: 160px;
+    height: 40px;
+    overflow: visible;
+    padding-top: 0;
+    padding-bottom: 0;
+}
+
+/*.navbar .nav > li > a {
+    color: #17265a;
+}*/
+
+.extarget {
+    margin-left: 4px;
+    padding-bottom: 2px;
+}
+
+.btn-custom-darken.active {
+  color: rgba(255, 255, 255, 0.75);
+}
+.btn-custom-darken {
+  color: #ffffff;
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
+  background-color: #233887;
+  background-image: -moz-linear-gradient(top, #273f97, #1d2e6e);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#273f97), to(#1d2e6e));
+  background-image: -webkit-linear-gradient(top, #273f97, #1d2e6e);
+  background-image: -o-linear-gradient(top, #273f97, #1d2e6e);
+  background-image: linear-gradient(to bottom, #273f97, #1d2e6e);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff273f97', endColorstr='#ff1d2e6e', GradientType=0);
+  border-color: #1d2e6e #1d2e6e #0d1532;
+  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
+  *background-color: #1d2e6e;
+  /* Darken IE7 buttons by default so they stand out more given they won't have borders */
+
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+}
+.btn-custom-darken:hover,
+.btn-custom-darken:focus,
+.btn-custom-darken:active,
+.btn-custom-darken.active,
+.btn-custom-darken.disabled,
+.btn-custom-darken[disabled] {
+  color: #ffffff;
+  background-color: #1d2e6e;
+  *background-color: #17265a;
+}
+.btn-custom-darken:active,
+.btn-custom-darken.active {
+  background-color: #121d46 ;
+}
+
+.span6 {
+    padding: 24px;
+}
diff --git a/asterix-app/src/main/resources/webui/static/img/finalasterixlogo.jpg b/asterix-app/src/main/resources/webui/static/img/finalasterixlogo.jpg
new file mode 100644
index 0000000..0ab3727
--- /dev/null
+++ b/asterix-app/src/main/resources/webui/static/img/finalasterixlogo.jpg
Binary files differ
diff --git a/asterix-app/src/main/resources/webui/static/img/finalasterixlogo.png b/asterix-app/src/main/resources/webui/static/img/finalasterixlogo.png
new file mode 100644
index 0000000..10ce431
--- /dev/null
+++ b/asterix-app/src/main/resources/webui/static/img/finalasterixlogo.png
Binary files differ
diff --git a/asterix-app/src/main/resources/webui/static/img/targetlink.png b/asterix-app/src/main/resources/webui/static/img/targetlink.png
new file mode 100644
index 0000000..68ceb60
--- /dev/null
+++ b/asterix-app/src/main/resources/webui/static/img/targetlink.png
Binary files differ
diff --git a/asterix-app/src/main/resources/webui/static/js/bootstrap.min.js b/asterix-app/src/main/resources/webui/static/js/bootstrap.min.js
index 95c5ac5..319a85d 100644
--- a/asterix-app/src/main/resources/webui/static/js/bootstrap.min.js
+++ b/asterix-app/src/main/resources/webui/static/js/bootstrap.min.js
@@ -1,6 +1,7 @@
-/*!
+/**
 * Bootstrap.js by @fat & @mdo
+* plugins: bootstrap-transition.js, bootstrap-modal.js, bootstrap-dropdown.js, bootstrap-scrollspy.js, bootstrap-tab.js, bootstrap-tooltip.js, bootstrap-popover.js, bootstrap-affix.js, bootstrap-alert.js, bootstrap-button.js, bootstrap-collapse.js, bootstrap-carousel.js, bootstrap-typeahead.js
 * Copyright 2012 Twitter, Inc.
 * http://www.apache.org/licenses/LICENSE-2.0.txt
 */
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\ No newline at end of file
diff --git a/asterix-app/src/test/resources/metadata/queries/basic/issue_363_temporal_sec_key_4/issue_363_temporal_sec_key_4.1.ddl.aql b/asterix-app/src/test/resources/metadata/queries/basic/issue_363_temporal_sec_key_4/issue_363_temporal_sec_key_4.1.ddl.aql
index c6a8836..a935975 100644
--- a/asterix-app/src/test/resources/metadata/queries/basic/issue_363_temporal_sec_key_4/issue_363_temporal_sec_key_4.1.ddl.aql
+++ b/asterix-app/src/test/resources/metadata/queries/basic/issue_363_temporal_sec_key_4/issue_363_temporal_sec_key_4.1.ddl.aql
@@ -16,4 +16,4 @@
 }
 
 create dataset Employee(Emp) primary key id;
-create index TestSecondIndex on Employee(dt);
\ No newline at end of file
+create index TestSecondIndex on Employee(dur);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/aggregate/query-issue400/query-issue400.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/aggregate/query-issue400/query-issue400.3.query.aql
index 9819455..4611058 100644
--- a/asterix-app/src/test/resources/runtimets/queries/aggregate/query-issue400/query-issue400.3.query.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/aggregate/query-issue400/query-issue400.3.query.aql
@@ -6,4 +6,4 @@
  */
  
 let $l := [[1,2,3,4,5],[6,7,8,9]]
-return count(for $i in $l return $i)
\ No newline at end of file
+return count(for $i in $l return $i)
diff --git a/asterix-app/src/test/resources/runtimets/queries/fuzzyjoin/opentype/opentype.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/fuzzyjoin/opentype/opentype.1.ddl.aql
new file mode 100644
index 0000000..17da24b
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/fuzzyjoin/opentype/opentype.1.ddl.aql
@@ -0,0 +1,13 @@
+drop dataverse TinySocial if exists;
+create dataverse TinySocial;
+use dataverse TinySocial;
+
+create type TweetMessageType as open {
+        tweetid: string
+}
+
+create dataset TweetMessages(TweetMessageType)
+primary key tweetid
+hints(cardinality=100); 
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/fuzzyjoin/opentype/opentype.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/fuzzyjoin/opentype/opentype.2.update.aql
new file mode 100644
index 0000000..627623a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/fuzzyjoin/opentype/opentype.2.update.aql
@@ -0,0 +1,5 @@
+use dataverse TinySocial;
+
+load dataset TweetMessages
+using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/tinysocial/twm.adm"),("format"="adm"));
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/fuzzyjoin/opentype/opentype.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/fuzzyjoin/opentype/opentype.3.query.aql
new file mode 100644
index 0000000..f40e884
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/fuzzyjoin/opentype/opentype.3.query.aql
@@ -0,0 +1,15 @@
+use dataverse TinySocial;
+
+set simfunction "jaccard";
+set simthreshold "0.3";
+
+for $t in dataset TweetMessages
+order by $t.tweetid
+return {                     
+    "tweet": $t,               
+    "similar-tweets": for $t2 in dataset TweetMessages
+    					order by $t2.tweetid
+                        where  $t2.referred-topics ~= $t.referred-topics
+                        and $t2.tweetid != $t.tweetid
+                        return $t2.referred-topics
+};
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/numeric/caret0/caret0.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/numeric/caret0/caret0.1.ddl.aql
new file mode 100644
index 0000000..139597f
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/numeric/caret0/caret0.1.ddl.aql
@@ -0,0 +1,2 @@
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/numeric/caret0/caret0.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/numeric/caret0/caret0.2.update.aql
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/numeric/caret0/caret0.2.update.aql
diff --git a/asterix-app/src/test/resources/runtimets/queries/numeric/caret0/caret0.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/numeric/caret0/caret0.3.query.aql
new file mode 100644
index 0000000..825b269
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/numeric/caret0/caret0.3.query.aql
@@ -0,0 +1,5 @@
+let $n1 := 2.0
+let $n2 := 4096.0
+let $n3 := 3
+let $n4 := 2
+return { "c1": $n1^$n2, "c2": $n2^$n1, "c3": $n3^$n4 }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423-2/query-issue423-2.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423-2/query-issue423-2.1.ddl.aql
new file mode 100644
index 0000000..d40df1b
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423-2/query-issue423-2.1.ddl.aql
@@ -0,0 +1,15 @@
+/*
+ * Description  : This test case is to verify the fix for issue423
+ 				  (Specifically for NLJ case)
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=423
+ * Expected Res : Success
+ * Date         : 29th May 2013
+ */
+drop dataverse test if exists;
+create dataverse test;
+use dataverse test;
+
+create type TestType as open { id : int32 ,fname:string, lname:string}
+
+create dataset t2(TestType) primary key fname,lname;
+create dataset t1(TestType) primary key fname,lname;
diff --git a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423-2/query-issue423-2.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423-2/query-issue423-2.2.update.aql
new file mode 100644
index 0000000..ef89d7f
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423-2/query-issue423-2.2.update.aql
@@ -0,0 +1,14 @@
+/*
+ * Description  : This test case is to verify the fix for issue423
+ 				  (Specifically for NLJ case)
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=423
+ * Expected Res : Success
+ * Date         : 29th May 2013
+ */
+ 
+use dataverse test;
+
+insert into dataset t1({"id":123,"fname":"John","lname":"Doe"});
+insert into dataset t1({"id":122,"fname":"Bruce","lname":"Li"});
+insert into dataset t2({"id":23,"fname":"John","lname":"Doe"});
+insert into dataset t2({"id":24,"fname":"Ravi","lname":"Khanna"});
diff --git a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423-2/query-issue423-2.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423-2/query-issue423-2.3.query.aql
new file mode 100644
index 0000000..38e7729
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423-2/query-issue423-2.3.query.aql
@@ -0,0 +1,14 @@
+/*
+ * Description  : This test case is to verify the fix for issue423
+ 				  (Specifically for NLJ case)
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=423
+ * Expected Res : Success
+ * Date         : 29th May 2013
+ */
+ 
+use dataverse test;
+
+for $l in dataset t1
+for $m in dataset t2
+	where $l.age>$m.age
+return {"l":$l,"m":$m};
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.1.ddl.aql
index 05eb126..7491fcc 100644
--- a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.1.ddl.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.1.ddl.aql
@@ -1,3 +1,11 @@
+/*
+ * Description  : This test case is to verify the fix for issue423
+ 				  (Specifically for HHJ case)
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=423
+ * Expected Res : Success
+ * Date         : 29th May 2013
+ */
+ 
 drop dataverse test if exists;
 create dataverse test;
 use dataverse test;
diff --git a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.2.update.aql
index 71904f1..40ee53e 100644
--- a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.2.update.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.2.update.aql
@@ -1,3 +1,11 @@
+/*
+ * Description  : This test case is to verify the fix for issue423
+ 				  (Specifically for HHJ case)
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=423
+ * Expected Res : Success
+ * Date         : 29th May 2013
+ */
+ 
 use dataverse test;
 
 insert into dataset t1({"id":123,"fname":"John","lname":"Doe"});
diff --git a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.3.query.aql
index a07b185..d124385 100644
--- a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.3.query.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue423/query-issue423.3.query.aql
@@ -1,3 +1,11 @@
+/*
+ * Description  : This test case is to verify the fix for issue423
+ 				  (Specifically for HHJ case)
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=423
+ * Expected Res : Success
+ * Date         : 29th May 2013
+ */
+ 
 use dataverse test;
 
 for $l in dataset t1
diff --git a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue487/query-issue487.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue487/query-issue487.1.ddl.aql
new file mode 100644
index 0000000..4d74b83
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue487/query-issue487.1.ddl.aql
@@ -0,0 +1,18 @@
+/*
+ * Description  : This test case is to verify the fix for issue487
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=487
+ * Expected Res : FAIL
+ * Date         : 30th May 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+use dataverse test;
+
+create type EmpType as open {
+id : int32,
+name : string
+}
+
+create dataset Employee(EmpType) primary key id;
+ 
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue487/query-issue487.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue487/query-issue487.2.update.aql
new file mode 100644
index 0000000..6913b4f
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue487/query-issue487.2.update.aql
@@ -0,0 +1,10 @@
+/*
+ * Description  : This test case is to verify the fix for issue487
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=487
+ * Expected Res : FAIL
+ * Date         : 30th May 2013
+ */
+
+use dataverse test;
+ 
+insert into dataset Employee ({ "id":123});
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue487/query-issue487.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue487/query-issue487.3.query.aql
new file mode 100644
index 0000000..d53aba9
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/open-closed/query-issue487/query-issue487.3.query.aql
@@ -0,0 +1,12 @@
+/*
+ * Description  : This test case is to verify the fix for issue487
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=487
+ * Expected Res : FAIL
+ * Date         : 30th May 2013
+ */
+
+use dataverse test;
+
+for $l in dataset Employee
+return $l;
+ 
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/string/string-to-codepoint2/string-to-codepoint2.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/string/string-to-codepoint2/string-to-codepoint2.1.ddl.aql
new file mode 100644
index 0000000..754ea81
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/string/string-to-codepoint2/string-to-codepoint2.1.ddl.aql
@@ -0,0 +1,3 @@
+drop dataverse test if exists;
+create dataverse test;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/string/string-to-codepoint2/string-to-codepoint2.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/string/string-to-codepoint2/string-to-codepoint2.2.update.aql
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/string/string-to-codepoint2/string-to-codepoint2.2.update.aql
diff --git a/asterix-app/src/test/resources/runtimets/queries/string/string-to-codepoint2/string-to-codepoint2.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/string/string-to-codepoint2/string-to-codepoint2.3.query.aql
new file mode 100644
index 0000000..88f0dfa
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/string/string-to-codepoint2/string-to-codepoint2.3.query.aql
@@ -0,0 +1,6 @@
+use dataverse test;
+
+let $x := "欢迎"
+let $c := string-to-codepoint($x)
+
+return {"result1": $c}
diff --git a/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.1.ddl.aql
index 280e52c..d595848 100644
--- a/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.1.ddl.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.1.ddl.aql
@@ -1,6 +1,6 @@
 /*
  * Testcase Name  : substr04.aql
- * Description    : Test substring2(string,position,position) built in function.
+ * Description    : Test substring(string,position,position) built in function.
  * Success        : Yes
  * Date           : 18th April 2012
  */
diff --git a/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.2.update.aql
index 280e52c..d595848 100644
--- a/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.2.update.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.2.update.aql
@@ -1,6 +1,6 @@
 /*
  * Testcase Name  : substr04.aql
- * Description    : Test substring2(string,position,position) built in function.
+ * Description    : Test substring(string,position,position) built in function.
  * Success        : Yes
  * Date           : 18th April 2012
  */
diff --git a/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.3.query.aql
index 0f5b1ff..69ff8ab 100644
--- a/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.3.query.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/string/substr04/substr04.3.query.aql
@@ -1,19 +1,17 @@
 /*
  * Testcase Name  : substr04.aql
- * Description    : Test substring2(string,position,position) built in function.
+ * Description    : Test substring(string, position, length) built in function.
  * Success        : Yes
  * Date           : 18th April 2012
  */
 
-for $a in [ substring2("hello world",7,11),
-substring("hello world",1,11),
-substring("hello world",3,7),
-substring("ABCD",3,6),
-substring("ABCD",0,4),
-substring("UC Irvine",4,string-length("UC Irvine")),
-substring("UC Irvine",0,string-length("UC Irvine")),
-substring("UC Irvine",1,string-length("UC Irvine")),
-substring(substring("UC Irvine",4),0,string-length("Irvine")),
-substring(substring("UC Irvine",4),0,(string-length("Irvine")/2))
+for $a in [ substring("hello world", 7, 5),
+substring("hello world", 1, 11),
+substring("hello world", 3, 9),
+substring("ABCD", 3, 2),
+substring("ABCD", 1, 4),
+substring("UC Irvine", 4, string-length("UC Irvine") - 3),
+substring("UC Irvine", 1, string-length("UC Irvine")),
+substring(substring("UC Irvine", 4), 1, string-length("Irvine"))
 ]
 return $a
diff --git a/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.1.ddl.aql
index cd3bee1..6a77034 100644
--- a/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.1.ddl.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.1.ddl.aql
@@ -1,6 +1,6 @@
 /*
  * Testcase Name  : substr05.aql
- * Description    : Test substring2(string,position,position) built in function.
+ * Description    : Test substring(string,position,position) built in function.
  * Success        : Yes
  * Date           : 19th April 2012
  */
diff --git a/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.2.update.aql
index da796c7..680f0db 100644
--- a/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.2.update.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.2.update.aql
@@ -1,6 +1,6 @@
 /*
  * Testcase Name  : substr05.aql
- * Description    : Test substring2(string,position,position) built in function.
+ * Description    : Test substring(string,position,position) built in function.
  * Success        : Yes
  * Date           : 19th April 2012
  */
diff --git a/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.3.query.aql
index 1b2cfe5..5c0fa4f 100644
--- a/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.3.query.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/string/substr05/substr05.3.query.aql
@@ -1,14 +1,14 @@
 /*
  * Testcase Name  : substr05.aql
- * Description    : Test substring2(string,position,position) built in function.
+ * Description    : Test substring(string,position,position) built in function.
  * Success        : Yes
  * Date           : 19th April 2012
  */
 
-// To test substring2 function with string data stored in an internal dataset.
+// To test substring function with string data stored in an internal dataset.
 
 use dataverse test;
 
 for $a in dataset('testdst')
 order by $a.name
-return substring($a.name,4,string-length($a.name));
+return substring($a.name, 4, string-length($a.name) - 3);
diff --git a/asterix-app/src/test/resources/runtimets/queries/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.1.ddl.aql
new file mode 100644
index 0000000..66d955c
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.1.ddl.aql
@@ -0,0 +1,25 @@
+/*
+ * Test case name: insert_from_ext_ds_2
+ * Description: verify external data loading on temporal types
+ * Expected result: success
+ */
+ 
+drop dataverse timeTest if exists;
+create dataverse timeTest;
+use dataverse timeTest;
+
+create type timesType as open {
+    date: date,
+    time: time,
+    datetime: datetime,
+    duration: duration,
+    year-month-duration: year-month-duration,
+    day-time-duration: day-time-duration,
+	date-interval: interval,
+	time-interval: interval,
+	datetime-interval: interval
+}
+
+create dataset timeData(timesType)
+primary key date;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.2.update.aql
new file mode 100644
index 0000000..daff7c6
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.2.update.aql
@@ -0,0 +1,4 @@
+use dataverse timeTest;
+
+load dataset timeData using localfs
+(("path"="nc1://data/temporal/simpletemp_30.json"),("format"="adm"));
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.3.query.aql
new file mode 100644
index 0000000..28549c8
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.3.query.aql
@@ -0,0 +1,5 @@
+use dataverse timeTest;
+
+for $r in dataset timeData
+order by $r.date
+return $r
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.1.ddl.aql
new file mode 100644
index 0000000..a6af75e
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.1.ddl.aql
@@ -0,0 +1,44 @@
+drop dataverse TinySocial if exists;
+create dataverse TinySocial;
+use dataverse TinySocial;
+
+create type TwitterUserType as open {
+        screen-name: string,
+        lang: string,
+        friends_count: int32,
+        statuses_count: int32,
+        name: string,
+        followers_count: int32
+}
+
+create type TweetMessageType as closed {
+        tweetid: string,
+        user: TwitterUserType,
+        sender-location: point?,
+        send-time: datetime,
+        referred-topics: {{ string }},
+        message-text: string
+}
+
+create type EmploymentType as open {
+        organization-name: string,      
+        start-date: date,
+        end-date: date?
+}
+
+create type FacebookUserType as closed {
+        id: int32,
+        alias: string,
+        name: string,
+        user-since: datetime,
+        friend-ids: {{ int32 }},
+        employment: [EmploymentType]
+}
+
+create type FacebookMessageType as closed {
+        message-id: int32,
+        author-id: int32,
+        in-response-to: int32?,
+        sender-location: point?,
+        message: string
+}
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.10.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.10.query.aql
new file mode 100644
index 0000000..24da0fb
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.10.query.aql
@@ -0,0 +1,15 @@
+/**
+* Query 4 - Theta Join
+*/
+
+use dataverse TinySocial;
+
+for $t in dataset TweetMessages
+order by $t.message-text
+return {
+"message": $t.message-text,
+"nearby-messages": for $t2 in dataset TweetMessages
+                        where spatial-distance($t.sender-location, $t2.sender-location) <= 1
+                        order by $t2.message-text
+                        return { "msgtxt":$t2.message-text}
+};
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.11.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.11.query.aql
new file mode 100644
index 0000000..5f428cd
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.11.query.aql
@@ -0,0 +1,22 @@
+/**
+* Query 5 - Fuzzy Join 
+*/
+
+use dataverse TinySocial;
+
+set simfunction "edit-distance";
+set simthreshold "3";
+
+for $fbu in dataset FacebookUsers
+order by $fbu.id
+return {
+    "id": $fbu.id,
+    "name": $fbu.name,
+    "similar-users": for $t in dataset TweetMessages
+                        let $tu := $t.user
+                        where $tu.name ~= $fbu.name
+                        return {
+                        "twitter-screenname": $tu.screen-name,
+                        "twitter-name": $tu.name
+                        }
+};
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.12.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.12.query.aql
new file mode 100644
index 0000000..869b4ce
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.12.query.aql
@@ -0,0 +1,10 @@
+/**
+* Query 6 - Existential Quantification
+*/
+
+use dataverse TinySocial;
+
+for $fbu in dataset FacebookUsers
+where (some $e in $fbu.employment satisfies is-null($e.end-date)) 
+order by $fbu.id
+return $fbu;
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.13.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.13.query.aql
new file mode 100644
index 0000000..056cf9a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.13.query.aql
@@ -0,0 +1,11 @@
+/**
+* Query 7 - Universal Quantification
+*/
+
+use dataverse TinySocial;
+
+
+for $fbu in dataset FacebookUsers
+where (every $e in $fbu.employment satisfies not(is-null($e.end-date))) 
+order by $fbu.id
+return $fbu;
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.14.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.14.query.aql
new file mode 100644
index 0000000..5593669
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.14.query.aql
@@ -0,0 +1,7 @@
+/**
+* Query 8 - Simple Aggregation
+*/
+
+use dataverse TinySocial;
+
+count(for $fbu in dataset FacebookUsers return $fbu);
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.15.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.15.query.aql
new file mode 100644
index 0000000..2b45b00
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.15.query.aql
@@ -0,0 +1,13 @@
+/**
+* Query 9-A - Grouping and Aggregation
+*/
+
+use dataverse TinySocial;
+
+for $t in dataset TweetMessages
+group by $uid := $t.user.screen-name with $t
+order by $uid
+return {
+"user": $uid,
+"count": count($t)
+};
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.16.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.16.query.aql
new file mode 100644
index 0000000..22c1e50
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.16.query.aql
@@ -0,0 +1,14 @@
+/**
+* Query 9-B - (Hash-Based) Grouping and Aggregation
+*/
+
+use dataverse TinySocial;
+
+for $t in dataset TweetMessages
+/*+ hash*/
+group by $uid := $t.user.screen-name with $t
+order by $uid
+return {
+"user": $uid,
+"count": count($t)
+};
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.17.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.17.query.aql
new file mode 100644
index 0000000..c29c966
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.17.query.aql
@@ -0,0 +1,15 @@
+/**
+* Query 10 - Grouping and Limits
+*/
+
+use dataverse TinySocial;
+
+for $t in dataset TweetMessages
+group by $uid := $t.user.screen-name with $t
+let $c := count($t)
+order by  $c,$uid desc
+limit 3
+return {
+        "user": $uid,
+        "count": $c
+};
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.18.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.18.query.aql
new file mode 100644
index 0000000..2d69ba2
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.18.query.aql
@@ -0,0 +1,19 @@
+/**
+* Query 11 - Left Outer Fuzzy Join
+*/
+
+use dataverse TinySocial;
+
+set simfunction "jaccard";
+set simthreshold "0.3";
+
+for $t in dataset TweetMessages
+order by $t.tweetid
+return {                     
+    "tweet": $t,               
+    "similar-tweets": for $t2 in dataset TweetMessages
+                        where  $t2.referred-topics ~= $t.referred-topics
+                        and $t2.tweetid != $t.tweetid
+                        order by $t2.tweetid
+                        return $t2.referred-topics
+};
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.19.update.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.19.update.aql
new file mode 100644
index 0000000..2a6fd83
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.19.update.aql
@@ -0,0 +1,23 @@
+/**
+* Inserting New Data
+*/
+
+use dataverse TinySocial;
+
+insert into dataset TweetMessages
+(
+   {"tweetid":"13",
+    "user":
+        {"screen-name":"NathanGiesen@211",
+         "lang":"en",
+         "friends_count":39345,
+         "statuses_count":479,
+         "name":"Nathan Giesen",
+         "followers_count":49420
+        },
+    "sender-location":point("47.44,80.65"),
+    "send-time":datetime("2008-04-26T10:10:35"),
+    "referred-topics":{{"tweeting"}},
+    "message-text":"tweety tweet, my fellow tweeters!"
+   }
+);
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.2.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.2.ddl.aql
new file mode 100644
index 0000000..1fcc52e
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.2.ddl.aql
@@ -0,0 +1,19 @@
+use dataverse TinySocial;
+
+create dataset FacebookUsers(FacebookUserType)
+primary key id;
+
+create dataset FacebookMessages(FacebookMessageType)
+primary key message-id;
+
+create dataset TwitterUsers(TwitterUserType)
+primary key screen-name;
+
+create dataset TweetMessages(TweetMessageType)
+primary key tweetid
+hints(cardinality=100); 
+
+create index fbUserSinceIdx on FacebookUsers(user-since);
+create index fbAuthorIdx on FacebookMessages(author-id) type btree;
+create index fbSenderLocIndex on FacebookMessages(sender-location) type rtree;
+create index fbMessageIdx on FacebookMessages(message) type keyword;
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.20.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.20.query.aql
new file mode 100644
index 0000000..ee7bb3f
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.20.query.aql
@@ -0,0 +1,9 @@
+/**
+* Inserting New Data - Verification
+*/
+
+use dataverse TinySocial;
+
+for $t in dataset TweetMessages
+order by $t.tweetid
+return $t
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.21.update.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.21.update.aql
new file mode 100644
index 0000000..a8912cc
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.21.update.aql
@@ -0,0 +1,7 @@
+/**
+* Deleting Existing Data
+*/
+
+use dataverse TinySocial;
+
+delete $tm from dataset TweetMessages where $tm.tweetid = "13";
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.22.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.22.query.aql
new file mode 100644
index 0000000..395b7c1
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.22.query.aql
@@ -0,0 +1,11 @@
+/**
+* Deleting Existing Data - Verification
+*/
+
+use dataverse TinySocial;
+
+count(
+for $t in dataset TweetMessages
+where $t.tweetid = "13"
+return $t
+)
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.3.update.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.3.update.aql
new file mode 100644
index 0000000..92db8a1
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.3.update.aql
@@ -0,0 +1,13 @@
+use dataverse TinySocial;
+
+load dataset FacebookUsers using localfs
+(("path"="nc1://data/tinysocial/fbu.adm"),("format"="adm"));
+
+load dataset FacebookMessages using localfs
+(("path"="nc1://data/tinysocial/fbm.adm"),("format"="adm"));
+
+load dataset TwitterUsers using localfs
+(("path"="nc1://data/tinysocial/twu.adm"),("format"="adm"));
+
+load dataset TweetMessages using localfs
+(("path"="nc1://data/tinysocial/twm.adm"),("format"="adm"));
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.4.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.4.query.aql
new file mode 100644
index 0000000..0bf0d89
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.4.query.aql
@@ -0,0 +1,9 @@
+/**
+* Query 0-A - Exact-Match Lookup
+*/
+
+use dataverse TinySocial;
+
+for $user in dataset FacebookUsers
+where $user.id = 8
+return $user;
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.5.query.aql
new file mode 100644
index 0000000..a7b40de
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.5.query.aql
@@ -0,0 +1,10 @@
+/**
+* Query 0-B - Range Scan
+*/
+
+use dataverse TinySocial;
+
+for $user in dataset FacebookUsers
+where $user.id >= 2 and $user.id <= 4
+order by $user.id
+return $user;
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.6.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.6.query.aql
new file mode 100644
index 0000000..40234f6
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.6.query.aql
@@ -0,0 +1,11 @@
+/**
+* Query 1 - Other Query Filters 
+*/
+
+use dataverse TinySocial;
+
+for $user in dataset FacebookUsers
+where $user.user-since >= datetime('2010-07-22T00:00:00')
+  and $user.user-since <= datetime('2012-07-29T23:59:59')
+order by $user.id
+return $user;
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.7.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.7.query.aql
new file mode 100644
index 0000000..98112ae
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.7.query.aql
@@ -0,0 +1,14 @@
+/**
+* Query 2-A - Equijoin
+*/
+
+use dataverse TinySocial;
+
+for $user in dataset FacebookUsers
+for $message in dataset FacebookMessages
+where $message.author-id = $user.id 
+order by $user.name,$message.message-id
+return {
+"uname": $user.name,
+"message": $message.message
+};
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.8.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.8.query.aql
new file mode 100644
index 0000000..e274571
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.8.query.aql
@@ -0,0 +1,14 @@
+/**
+* Query 2-B - Index join
+*/
+
+use dataverse TinySocial;
+
+for $user in dataset FacebookUsers
+for $message in dataset FacebookMessages
+where $message.author-id /*+ indexnl */  = $user.id
+order by $user.name,$message.message-id
+return {
+"uname": $user.name,
+"message": $message.message
+};
diff --git a/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.9.query.aql b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.9.query.aql
new file mode 100644
index 0000000..c4e70c6
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/tinysocial/tinysocial-suite/tinysocial-suite.9.query.aql
@@ -0,0 +1,15 @@
+/**
+* Query 3 - Nested Outer Join
+*/
+
+use dataverse TinySocial;
+
+for $user in dataset FacebookUsers
+order by $user.name
+return {
+"uname": $user.name,
+"messages": for $message in dataset FacebookMessages
+                where $message.author-id = $user.id
+                order by $message.message-id
+                return $message.message
+};
diff --git a/asterix-app/src/test/resources/runtimets/queries/tpch/q15_top_supplier/q15_top_supplier.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/tpch/q15_top_supplier/q15_top_supplier.3.query.aql
index f61ceb5..9f1080d 100644
--- a/asterix-app/src/test/resources/runtimets/queries/tpch/q15_top_supplier/q15_top_supplier.3.query.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/tpch/q15_top_supplier/q15_top_supplier.3.query.aql
@@ -17,7 +17,7 @@
 
 for $s in dataset('Supplier')
 for $r in revenue()
-	where $s.s_suppkey = $r.supplier_no and $r.total_revenue=$m
+	where $s.s_suppkey = $r.supplier_no and $r.total_revenue<$m+0.000000001 and $r.total_revenue>$m-0.000000001
 return {
 "s_suppkey": $s.s_suppkey, 
 "s_name": $s.s_name, 
diff --git a/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/query-issue172/query-issue172.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/query-issue172/query-issue172.1.ddl.aql
new file mode 100644
index 0000000..e1fab96
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/query-issue172/query-issue172.1.ddl.aql
@@ -0,0 +1,7 @@
+/*
+ * Description  : This test case is to verify the fix for issue172
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=172
+ * Expected Res : Success
+ * Date         : 19th May 2013
+ */
+ 
diff --git a/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/query-issue172/query-issue172.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/query-issue172/query-issue172.2.update.aql
new file mode 100644
index 0000000..b08fc74
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/query-issue172/query-issue172.2.update.aql
@@ -0,0 +1,7 @@
+/*
+ * Description  : This test case is to verify the fix for issue172
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=172
+ * Expected Res : Success
+ * Date         : 19th May 2013
+ */
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/query-issue172/query-issue172.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/query-issue172/query-issue172.3.query.aql
new file mode 100644
index 0000000..b695ccb
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/query-issue172/query-issue172.3.query.aql
@@ -0,0 +1,9 @@
+/*
+ * Description  : This test case is to verify the fix for issue172
+ 				: https://code.google.com/p/asterixdb/issues/detail?id=172
+ * Expected Res : Success
+ * Date         : 19th May 2013
+ */
+
+let $a := string-length(string-concat(["this is a ","test string"]))
+return $a
diff --git a/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/udf29/udf29.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/udf29/udf29.1.ddl.aql
index edede00..f9f1e25 100644
--- a/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/udf29/udf29.1.ddl.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/udf29/udf29.1.ddl.aql
@@ -8,9 +8,3 @@
 drop dataverse test if exists;
 create dataverse test;
 
-use dataverse test;
-
-declare function test.f1(){
-100
-};
-
diff --git a/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/udf29/udf29.2.query.aql b/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/udf29/udf29.2.query.aql
index 2f9e763..5755963 100644
--- a/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/udf29/udf29.2.query.aql
+++ b/asterix-app/src/test/resources/runtimets/queries/user-defined-functions/udf29/udf29.2.query.aql
@@ -5,5 +5,10 @@
  */
 
 use dataverse test;
+
+declare function f1(){
+100
+};
+
 let $x:=f1()
 return $x
diff --git a/asterix-app/src/test/resources/runtimets/results/fuzzyjoin/opentype/opentype.1.adm b/asterix-app/src/test/resources/runtimets/results/fuzzyjoin/opentype/opentype.1.adm
new file mode 100644
index 0000000..ae0c4cb
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/fuzzyjoin/opentype/opentype.1.adm
@@ -0,0 +1,12 @@
+{ "tweet": { "tweetid": "1", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("47.44,80.65"), "send-time": datetime("2008-04-26T10:10:00.000Z"), "referred-topics": {{ "t-mobile", "customization" }}, "message-text": " love t-mobile its customization is good:)" }, "similar-tweets": [ {{ "t-mobile", "shortcut-menu" }} ] }
+{ "tweet": { "tweetid": "10", "user": { "screen-name": "ColineGeyer@63", "lang": "en", "friends_count": 121, "statuses_count": 362, "name": "Coline Geyer", "followers_count": 17159 }, "sender-location": point("29.15,76.53"), "send-time": datetime("2008-01-26T10:10:00.000Z"), "referred-topics": {{ "verizon", "voice-clarity" }}, "message-text": " hate verizon its voice-clarity is OMG:(" }, "similar-tweets": [ {{ "verizon", "shortcut-menu" }}, {{ "iphone", "voice-clarity" }}, {{ "verizon", "voicemail-service" }} ] }
+{ "tweet": { "tweetid": "11", "user": { "screen-name": "NilaMilliron_tw", "lang": "en", "friends_count": 445, "statuses_count": 164, "name": "Nila Milliron", "followers_count": 22649 }, "sender-location": point("37.59,68.42"), "send-time": datetime("2008-03-09T10:10:00.000Z"), "referred-topics": {{ "iphone", "platform" }}, "message-text": " can't stand iphone its platform is terrible" }, "similar-tweets": [ {{ "iphone", "voice-clarity" }}, {{ "samsung", "platform" }} ] }
+{ "tweet": { "tweetid": "12", "user": { "screen-name": "OliJackson_512", "lang": "en", "friends_count": 445, "statuses_count": 164, "name": "Oli Jackson", "followers_count": 22649 }, "sender-location": point("24.82,94.63"), "send-time": datetime("2010-02-13T10:10:00.000Z"), "referred-topics": {{ "samsung", "voice-command" }}, "message-text": " like samsung the voice-command is amazing:)" }, "similar-tweets": [ {{ "sprint", "voice-command" }}, {{ "samsung", "platform" }} ] }
+{ "tweet": { "tweetid": "2", "user": { "screen-name": "ColineGeyer@63", "lang": "en", "friends_count": 121, "statuses_count": 362, "name": "Coline Geyer", "followers_count": 17159 }, "sender-location": point("32.84,67.14"), "send-time": datetime("2010-05-13T10:10:00.000Z"), "referred-topics": {{ "verizon", "shortcut-menu" }}, "message-text": " like verizon its shortcut-menu is awesome:)" }, "similar-tweets": [ {{ "verizon", "voice-clarity" }}, {{ "t-mobile", "shortcut-menu" }}, {{ "verizon", "voicemail-service" }} ] }
+{ "tweet": { "tweetid": "3", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("29.72,75.8"), "send-time": datetime("2006-11-04T10:10:00.000Z"), "referred-topics": {{ "motorola", "speed" }}, "message-text": " like motorola the speed is good:)" }, "similar-tweets": [ {{ "motorola", "speed" }} ] }
+{ "tweet": { "tweetid": "4", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("39.28,70.48"), "send-time": datetime("2011-12-26T10:10:00.000Z"), "referred-topics": {{ "sprint", "voice-command" }}, "message-text": " like sprint the voice-command is mind-blowing:)" }, "similar-tweets": [ {{ "samsung", "voice-command" }} ] }
+{ "tweet": { "tweetid": "5", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("40.09,92.69"), "send-time": datetime("2006-08-04T10:10:00.000Z"), "referred-topics": {{ "motorola", "speed" }}, "message-text": " can't stand motorola its speed is terrible:(" }, "similar-tweets": [ {{ "motorola", "speed" }} ] }
+{ "tweet": { "tweetid": "6", "user": { "screen-name": "ColineGeyer@63", "lang": "en", "friends_count": 121, "statuses_count": 362, "name": "Coline Geyer", "followers_count": 17159 }, "sender-location": point("47.51,83.99"), "send-time": datetime("2010-05-07T10:10:00.000Z"), "referred-topics": {{ "iphone", "voice-clarity" }}, "message-text": " like iphone the voice-clarity is good:)" }, "similar-tweets": [ {{ "verizon", "voice-clarity" }}, {{ "iphone", "platform" }} ] }
+{ "tweet": { "tweetid": "7", "user": { "screen-name": "ChangEwing_573", "lang": "en", "friends_count": 182, "statuses_count": 394, "name": "Chang Ewing", "followers_count": 32136 }, "sender-location": point("36.21,72.6"), "send-time": datetime("2011-08-25T10:10:00.000Z"), "referred-topics": {{ "samsung", "platform" }}, "message-text": " like samsung the platform is good" }, "similar-tweets": [ {{ "iphone", "platform" }}, {{ "samsung", "voice-command" }} ] }
+{ "tweet": { "tweetid": "8", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("46.05,93.34"), "send-time": datetime("2005-10-14T10:10:00.000Z"), "referred-topics": {{ "t-mobile", "shortcut-menu" }}, "message-text": " like t-mobile the shortcut-menu is awesome:)" }, "similar-tweets": [ {{ "t-mobile", "customization" }}, {{ "verizon", "shortcut-menu" }} ] }
+{ "tweet": { "tweetid": "9", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("36.86,74.62"), "send-time": datetime("2012-07-21T10:10:00.000Z"), "referred-topics": {{ "verizon", "voicemail-service" }}, "message-text": " love verizon its voicemail-service is awesome" }, "similar-tweets": [ {{ "verizon", "voice-clarity" }}, {{ "verizon", "shortcut-menu" }} ] }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/caret0/caret0.1.adm b/asterix-app/src/test/resources/runtimets/results/numeric/caret0/caret0.1.adm
new file mode 100644
index 0000000..1edec8a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/caret0/caret0.1.adm
@@ -0,0 +1 @@
+{ "c1": Infinityd, "c2": 1.6777216E7d, "c3": 9 }
diff --git a/asterix-app/src/test/resources/runtimets/results/open-closed/query-issue423-2/query-issue423-2.1.adm b/asterix-app/src/test/resources/runtimets/results/open-closed/query-issue423-2/query-issue423-2.1.adm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/open-closed/query-issue423-2/query-issue423-2.1.adm
diff --git a/asterix-app/src/test/resources/runtimets/results/open-closed/query-issue487/query-issue487.1.adm b/asterix-app/src/test/resources/runtimets/results/open-closed/query-issue487/query-issue487.1.adm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/open-closed/query-issue487/query-issue487.1.adm
diff --git a/asterix-app/src/test/resources/runtimets/results/string/string-to-codepoint2/string-to-codepoint2.1.adm b/asterix-app/src/test/resources/runtimets/results/string/string-to-codepoint2/string-to-codepoint2.1.adm
new file mode 100644
index 0000000..eacdb11
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/string-to-codepoint2/string-to-codepoint2.1.adm
@@ -0,0 +1 @@
+{ "result1": [ 27426, 36814 ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substr04/substr04.1.adm b/asterix-app/src/test/resources/runtimets/results/string/substr04/substr04.1.adm
index fcd3396..74bd0d6 100644
--- a/asterix-app/src/test/resources/runtimets/results/string/substr04/substr04.1.adm
+++ b/asterix-app/src/test/resources/runtimets/results/string/substr04/substr04.1.adm
@@ -5,6 +5,4 @@
 "ABCD"
 "Irvine"
 "UC Irvine"
-"UC Irvine"
-"Irvine"
 "Irvine"
diff --git a/asterix-app/src/test/resources/runtimets/results/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.1.adm b/asterix-app/src/test/resources/runtimets/results/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.1.adm
new file mode 100644
index 0000000..4d1cf59
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/temporal/insert_from_ext_ds_2/insert_from_ext_ds_2.1.adm
@@ -0,0 +1,3 @@
+{ "date": date("-9971-09-24"), "time": time("11:38:17.154Z"), "datetime": datetime("1259-11-13T09:49:11.852Z"), "duration": duration("P473653Y9M4566143DT10H20M53.61S"), "year-month-duration": year-month-duration("P148233Y10M"), "day-time-duration": day-time-duration("-P7236357DT2H56M56.164S"), "date-interval": interval-date("-0255-09-06, 4925-05-03"), "time-interval": interval-time("23:10:45.169Z, 01:37:48.736Z"), "datetime-interval": interval-datetime("0534-12-08T08:20:31.487Z, 6778-02-16T22:40:21.653Z") }
+{ "date": date("4619-11-23"), "time": time("14:29:36.786Z"), "datetime": datetime("2749-01-27T17:27:30.020Z"), "duration": duration("-P474133Y7M854630DT4H40M6.45S"), "year-month-duration": year-month-duration("P193989Y3M"), "day-time-duration": day-time-duration("P4477686DT4H49M31.87S"), "date-interval": interval-date("-9537-08-04, 9656-06-03"), "time-interval": interval-time("12:04:45.689Z, 12:41:59.002Z"), "datetime-interval": interval-datetime("-2640-10-11T17:32:15.675Z, 4104-02-01T05:59:11.902Z") }
+{ "date": date("7986-11-25"), "time": time("12:49:39.736Z"), "datetime": datetime("-8337-01-30T15:23:07.598Z"), "duration": duration("-P184484Y7M2241423DT10H42M49.500S"), "year-month-duration": year-month-duration("-P546031Y3M"), "day-time-duration": day-time-duration("P2623386DT10H32M31.983S"), "date-interval": interval-date("-4514-05-24, 3337-08-26"), "time-interval": interval-time("04:16:42.321Z, 02:22:56.816Z"), "datetime-interval": interval-datetime("2129-12-12T13:18:35.758Z, 8647-07-01T13:10:19.691Z") }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/.tinysocial-suite.5.adm.swp b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/.tinysocial-suite.5.adm.swp
new file mode 100644
index 0000000..e7eb7a1
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/.tinysocial-suite.5.adm.swp
Binary files differ
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.10.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.10.adm
new file mode 100644
index 0000000..5451c76
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.10.adm
@@ -0,0 +1,12 @@
+{ "message": " can't stand iphone its platform is terrible", "nearby-messages": [ { "msgtxt": " can't stand iphone its platform is terrible" } ] }
+{ "message": " can't stand motorola its speed is terrible:(", "nearby-messages": [ { "msgtxt": " can't stand motorola its speed is terrible:(" } ] }
+{ "message": " hate verizon its voice-clarity is OMG:(", "nearby-messages": [ { "msgtxt": " hate verizon its voice-clarity is OMG:(" }, { "msgtxt": " like motorola the speed is good:)" } ] }
+{ "message": " like iphone the voice-clarity is good:)", "nearby-messages": [ { "msgtxt": " like iphone the voice-clarity is good:)" } ] }
+{ "message": " like motorola the speed is good:)", "nearby-messages": [ { "msgtxt": " hate verizon its voice-clarity is OMG:(" }, { "msgtxt": " like motorola the speed is good:)" } ] }
+{ "message": " like samsung the platform is good", "nearby-messages": [ { "msgtxt": " like samsung the platform is good" } ] }
+{ "message": " like samsung the voice-command is amazing:)", "nearby-messages": [ { "msgtxt": " like samsung the voice-command is amazing:)" } ] }
+{ "message": " like sprint the voice-command is mind-blowing:)", "nearby-messages": [ { "msgtxt": " like sprint the voice-command is mind-blowing:)" } ] }
+{ "message": " like t-mobile the shortcut-menu is awesome:)", "nearby-messages": [ { "msgtxt": " like t-mobile the shortcut-menu is awesome:)" } ] }
+{ "message": " like verizon its shortcut-menu is awesome:)", "nearby-messages": [ { "msgtxt": " like verizon its shortcut-menu is awesome:)" } ] }
+{ "message": " love t-mobile its customization is good:)", "nearby-messages": [ { "msgtxt": " love t-mobile its customization is good:)" } ] }
+{ "message": " love verizon its voicemail-service is awesome", "nearby-messages": [ { "msgtxt": " love verizon its voicemail-service is awesome" } ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.11.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.11.adm
new file mode 100644
index 0000000..a5ec171
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.11.adm
@@ -0,0 +1,10 @@
+{ "id": 1, "name": "MargaritaStoddard", "similar-users": [  ] }
+{ "id": 2, "name": "IsbelDull", "similar-users": [  ] }
+{ "id": 3, "name": "EmoryUnk", "similar-users": [  ] }
+{ "id": 4, "name": "NicholasStroh", "similar-users": [  ] }
+{ "id": 5, "name": "VonKemble", "similar-users": [  ] }
+{ "id": 6, "name": "WillisWynne", "similar-users": [  ] }
+{ "id": 7, "name": "SuzannaTillson", "similar-users": [  ] }
+{ "id": 8, "name": "NilaMilliron", "similar-users": [ { "twitter-screenname": "NilaMilliron_tw", "twitter-name": "Nila Milliron" } ] }
+{ "id": 9, "name": "WoodrowNehling", "similar-users": [  ] }
+{ "id": 10, "name": "BramHatch", "similar-users": [  ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.12.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.12.adm
new file mode 100644
index 0000000..975222c
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.12.adm
@@ -0,0 +1,7 @@
+{ "id": 1, "alias": "Margarita", "name": "MargaritaStoddard", "user-since": datetime("2012-08-20T10:10:00.000Z"), "friend-ids": {{ 2, 3, 6, 10 }}, "employment": [ { "organization-name": "Codetechno", "start-date": date("2006-08-06"), "end-date": null } ] }
+{ "id": 2, "alias": "Isbel", "name": "IsbelDull", "user-since": datetime("2011-01-22T10:10:00.000Z"), "friend-ids": {{ 1, 4 }}, "employment": [ { "organization-name": "Hexviafind", "start-date": date("2010-04-27"), "end-date": null } ] }
+{ "id": 4, "alias": "Nicholas", "name": "NicholasStroh", "user-since": datetime("2010-12-27T10:10:00.000Z"), "friend-ids": {{ 2 }}, "employment": [ { "organization-name": "Zamcorporation", "start-date": date("2010-06-08"), "end-date": null } ] }
+{ "id": 5, "alias": "Von", "name": "VonKemble", "user-since": datetime("2010-01-05T10:10:00.000Z"), "friend-ids": {{ 3, 6, 10 }}, "employment": [ { "organization-name": "Kongreen", "start-date": date("2010-11-27"), "end-date": null } ] }
+{ "id": 6, "alias": "Willis", "name": "WillisWynne", "user-since": datetime("2005-01-17T10:10:00.000Z"), "friend-ids": {{ 1, 3, 7 }}, "employment": [ { "organization-name": "jaydax", "start-date": date("2009-05-15"), "end-date": null } ] }
+{ "id": 7, "alias": "Suzanna", "name": "SuzannaTillson", "user-since": datetime("2012-08-07T10:10:00.000Z"), "friend-ids": {{ 6 }}, "employment": [ { "organization-name": "Labzatron", "start-date": date("2011-04-19"), "end-date": null } ] }
+{ "id": 8, "alias": "Nila", "name": "NilaMilliron", "user-since": datetime("2008-01-01T10:10:00.000Z"), "friend-ids": {{ 3 }}, "employment": [ { "organization-name": "Plexlane", "start-date": date("2010-02-28"), "end-date": null } ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.13.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.13.adm
new file mode 100644
index 0000000..2df77f6
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.13.adm
@@ -0,0 +1,3 @@
+{ "id": 3, "alias": "Emory", "name": "EmoryUnk", "user-since": datetime("2012-07-10T10:10:00.000Z"), "friend-ids": {{ 1, 5, 8, 9 }}, "employment": [ { "organization-name": "geomedia", "start-date": date("2010-06-17"), "end-date": date("2010-01-26") } ] }
+{ "id": 9, "alias": "Woodrow", "name": "WoodrowNehling", "user-since": datetime("2005-09-20T10:10:00.000Z"), "friend-ids": {{ 3, 10 }}, "employment": [ { "organization-name": "Zuncan", "start-date": date("2003-04-22"), "end-date": date("2009-12-13") } ] }
+{ "id": 10, "alias": "Bram", "name": "BramHatch", "user-since": datetime("2010-10-16T10:10:00.000Z"), "friend-ids": {{ 1, 5, 9 }}, "employment": [ { "organization-name": "physcane", "start-date": date("2007-06-05"), "end-date": date("2011-11-05") } ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.14.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.14.adm
new file mode 100644
index 0000000..f599e28
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.14.adm
@@ -0,0 +1 @@
+10
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.15.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.15.adm
new file mode 100644
index 0000000..954b583
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.15.adm
@@ -0,0 +1,5 @@
+{ "user": "ChangEwing_573", "count": 1 }
+{ "user": "ColineGeyer@63", "count": 3 }
+{ "user": "NathanGiesen@211", "count": 6 }
+{ "user": "NilaMilliron_tw", "count": 1 }
+{ "user": "OliJackson_512", "count": 1 }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.16.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.16.adm
new file mode 100644
index 0000000..954b583
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.16.adm
@@ -0,0 +1,5 @@
+{ "user": "ChangEwing_573", "count": 1 }
+{ "user": "ColineGeyer@63", "count": 3 }
+{ "user": "NathanGiesen@211", "count": 6 }
+{ "user": "NilaMilliron_tw", "count": 1 }
+{ "user": "OliJackson_512", "count": 1 }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.17.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.17.adm
new file mode 100644
index 0000000..c721153
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.17.adm
@@ -0,0 +1,3 @@
+{ "user": "OliJackson_512", "count": 1 }
+{ "user": "NilaMilliron_tw", "count": 1 }
+{ "user": "ChangEwing_573", "count": 1 }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.18.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.18.adm
new file mode 100644
index 0000000..b59a814
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.18.adm
@@ -0,0 +1,12 @@
+{ "tweet": { "tweetid": "1", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("47.44,80.65"), "send-time": datetime("2008-04-26T10:10:00.000Z"), "referred-topics": {{ "t-mobile", "customization" }}, "message-text": " love t-mobile its customization is good:)" }, "similar-tweets": [ {{ "t-mobile", "shortcut-menu" }} ] }
+{ "tweet": { "tweetid": "10", "user": { "screen-name": "ColineGeyer@63", "lang": "en", "friends_count": 121, "statuses_count": 362, "name": "Coline Geyer", "followers_count": 17159 }, "sender-location": point("29.15,76.53"), "send-time": datetime("2008-01-26T10:10:00.000Z"), "referred-topics": {{ "verizon", "voice-clarity" }}, "message-text": " hate verizon its voice-clarity is OMG:(" }, "similar-tweets": [ {{ "verizon", "shortcut-menu" }}, {{ "iphone", "voice-clarity" }}, {{ "verizon", "voicemail-service" }} ] }
+{ "tweet": { "tweetid": "11", "user": { "screen-name": "NilaMilliron_tw", "lang": "en", "friends_count": 445, "statuses_count": 164, "name": "Nila Milliron", "followers_count": 22649 }, "sender-location": point("37.59,68.42"), "send-time": datetime("2008-03-09T10:10:00.000Z"), "referred-topics": {{ "iphone", "platform" }}, "message-text": " can't stand iphone its platform is terrible" }, "similar-tweets": [ {{ "iphone", "voice-clarity" }}, {{ "samsung", "platform" }} ] }
+{ "tweet": { "tweetid": "12", "user": { "screen-name": "OliJackson_512", "lang": "en", "friends_count": 445, "statuses_count": 164, "name": "Oli Jackson", "followers_count": 22649 }, "sender-location": point("24.82,94.63"), "send-time": datetime("2010-02-13T10:10:00.000Z"), "referred-topics": {{ "samsung", "voice-command" }}, "message-text": " like samsung the voice-command is amazing:)" }, "similar-tweets": [ {{ "sprint", "voice-command" }}, {{ "samsung", "platform" }} ] }
+{ "tweet": { "tweetid": "2", "user": { "screen-name": "ColineGeyer@63", "lang": "en", "friends_count": 121, "statuses_count": 362, "name": "Coline Geyer", "followers_count": 17159 }, "sender-location": point("32.84,67.14"), "send-time": datetime("2010-05-13T10:10:00.000Z"), "referred-topics": {{ "verizon", "shortcut-menu" }}, "message-text": " like verizon its shortcut-menu is awesome:)" }, "similar-tweets": [ {{ "verizon", "voice-clarity" }}, {{ "t-mobile", "shortcut-menu" }}, {{ "verizon", "voicemail-service" }} ] }
+{ "tweet": { "tweetid": "3", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("29.72,75.8"), "send-time": datetime("2006-11-04T10:10:00.000Z"), "referred-topics": {{ "motorola", "speed" }}, "message-text": " like motorola the speed is good:)" }, "similar-tweets": [ {{ "motorola", "speed" }} ] }
+{ "tweet": { "tweetid": "4", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("39.28,70.48"), "send-time": datetime("2011-12-26T10:10:00.000Z"), "referred-topics": {{ "sprint", "voice-command" }}, "message-text": " like sprint the voice-command is mind-blowing:)" }, "similar-tweets": [ {{ "samsung", "voice-command" }} ] }
+{ "tweet": { "tweetid": "5", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("40.09,92.69"), "send-time": datetime("2006-08-04T10:10:00.000Z"), "referred-topics": {{ "motorola", "speed" }}, "message-text": " can't stand motorola its speed is terrible:(" }, "similar-tweets": [ {{ "motorola", "speed" }} ] }
+{ "tweet": { "tweetid": "6", "user": { "screen-name": "ColineGeyer@63", "lang": "en", "friends_count": 121, "statuses_count": 362, "name": "Coline Geyer", "followers_count": 17159 }, "sender-location": point("47.51,83.99"), "send-time": datetime("2010-05-07T10:10:00.000Z"), "referred-topics": {{ "iphone", "voice-clarity" }}, "message-text": " like iphone the voice-clarity is good:)" }, "similar-tweets": [ {{ "verizon", "voice-clarity" }}, {{ "iphone", "platform" }} ] }
+{ "tweet": { "tweetid": "7", "user": { "screen-name": "ChangEwing_573", "lang": "en", "friends_count": 182, "statuses_count": 394, "name": "Chang Ewing", "followers_count": 32136 }, "sender-location": point("36.21,72.6"), "send-time": datetime("2011-08-25T10:10:00.000Z"), "referred-topics": {{ "samsung", "platform" }}, "message-text": " like samsung the platform is good" }, "similar-tweets": [ {{ "iphone", "platform" }}, {{ "samsung", "voice-command" }} ] }
+{ "tweet": { "tweetid": "8", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("46.05,93.34"), "send-time": datetime("2005-10-14T10:10:00.000Z"), "referred-topics": {{ "t-mobile", "shortcut-menu" }}, "message-text": " like t-mobile the shortcut-menu is awesome:)" }, "similar-tweets": [ {{ "t-mobile", "customization" }}, {{ "verizon", "shortcut-menu" }} ] }
+{ "tweet": { "tweetid": "9", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("36.86,74.62"), "send-time": datetime("2012-07-21T10:10:00.000Z"), "referred-topics": {{ "verizon", "voicemail-service" }}, "message-text": " love verizon its voicemail-service is awesome" }, "similar-tweets": [ {{ "verizon", "voice-clarity" }}, {{ "verizon", "shortcut-menu" }} ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.20.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.20.adm
new file mode 100644
index 0000000..5c8c013
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.20.adm
@@ -0,0 +1,13 @@
+{ "tweetid": "1", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("47.44,80.65"), "send-time": datetime("2008-04-26T10:10:00.000Z"), "referred-topics": {{ "t-mobile", "customization" }}, "message-text": " love t-mobile its customization is good:)" }
+{ "tweetid": "10", "user": { "screen-name": "ColineGeyer@63", "lang": "en", "friends_count": 121, "statuses_count": 362, "name": "Coline Geyer", "followers_count": 17159 }, "sender-location": point("29.15,76.53"), "send-time": datetime("2008-01-26T10:10:00.000Z"), "referred-topics": {{ "verizon", "voice-clarity" }}, "message-text": " hate verizon its voice-clarity is OMG:(" }
+{ "tweetid": "11", "user": { "screen-name": "NilaMilliron_tw", "lang": "en", "friends_count": 445, "statuses_count": 164, "name": "Nila Milliron", "followers_count": 22649 }, "sender-location": point("37.59,68.42"), "send-time": datetime("2008-03-09T10:10:00.000Z"), "referred-topics": {{ "iphone", "platform" }}, "message-text": " can't stand iphone its platform is terrible" }
+{ "tweetid": "12", "user": { "screen-name": "OliJackson_512", "lang": "en", "friends_count": 445, "statuses_count": 164, "name": "Oli Jackson", "followers_count": 22649 }, "sender-location": point("24.82,94.63"), "send-time": datetime("2010-02-13T10:10:00.000Z"), "referred-topics": {{ "samsung", "voice-command" }}, "message-text": " like samsung the voice-command is amazing:)" }
+{ "tweetid": "13", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39345, "statuses_count": 479, "name": "Nathan Giesen", "followers_count": 49420 }, "sender-location": point("47.44,80.65"), "send-time": datetime("2008-04-26T10:10:35.000Z"), "referred-topics": {{ "tweeting" }}, "message-text": "tweety tweet, my fellow tweeters!" }
+{ "tweetid": "2", "user": { "screen-name": "ColineGeyer@63", "lang": "en", "friends_count": 121, "statuses_count": 362, "name": "Coline Geyer", "followers_count": 17159 }, "sender-location": point("32.84,67.14"), "send-time": datetime("2010-05-13T10:10:00.000Z"), "referred-topics": {{ "verizon", "shortcut-menu" }}, "message-text": " like verizon its shortcut-menu is awesome:)" }
+{ "tweetid": "3", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("29.72,75.8"), "send-time": datetime("2006-11-04T10:10:00.000Z"), "referred-topics": {{ "motorola", "speed" }}, "message-text": " like motorola the speed is good:)" }
+{ "tweetid": "4", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("39.28,70.48"), "send-time": datetime("2011-12-26T10:10:00.000Z"), "referred-topics": {{ "sprint", "voice-command" }}, "message-text": " like sprint the voice-command is mind-blowing:)" }
+{ "tweetid": "5", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("40.09,92.69"), "send-time": datetime("2006-08-04T10:10:00.000Z"), "referred-topics": {{ "motorola", "speed" }}, "message-text": " can't stand motorola its speed is terrible:(" }
+{ "tweetid": "6", "user": { "screen-name": "ColineGeyer@63", "lang": "en", "friends_count": 121, "statuses_count": 362, "name": "Coline Geyer", "followers_count": 17159 }, "sender-location": point("47.51,83.99"), "send-time": datetime("2010-05-07T10:10:00.000Z"), "referred-topics": {{ "iphone", "voice-clarity" }}, "message-text": " like iphone the voice-clarity is good:)" }
+{ "tweetid": "7", "user": { "screen-name": "ChangEwing_573", "lang": "en", "friends_count": 182, "statuses_count": 394, "name": "Chang Ewing", "followers_count": 32136 }, "sender-location": point("36.21,72.6"), "send-time": datetime("2011-08-25T10:10:00.000Z"), "referred-topics": {{ "samsung", "platform" }}, "message-text": " like samsung the platform is good" }
+{ "tweetid": "8", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("46.05,93.34"), "send-time": datetime("2005-10-14T10:10:00.000Z"), "referred-topics": {{ "t-mobile", "shortcut-menu" }}, "message-text": " like t-mobile the shortcut-menu is awesome:)" }
+{ "tweetid": "9", "user": { "screen-name": "NathanGiesen@211", "lang": "en", "friends_count": 39339, "statuses_count": 473, "name": "Nathan Giesen", "followers_count": 49416 }, "sender-location": point("36.86,74.62"), "send-time": datetime("2012-07-21T10:10:00.000Z"), "referred-topics": {{ "verizon", "voicemail-service" }}, "message-text": " love verizon its voicemail-service is awesome" }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.22.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.22.adm
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.22.adm
@@ -0,0 +1 @@
+0
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.4.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.4.adm
new file mode 100644
index 0000000..e6d8392
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.4.adm
@@ -0,0 +1 @@
+{ "id": 8, "alias": "Nila", "name": "NilaMilliron", "user-since": datetime("2008-01-01T10:10:00.000Z"), "friend-ids": {{ 3 }}, "employment": [ { "organization-name": "Plexlane", "start-date": date("2010-02-28"), "end-date": null } ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.5.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.5.adm
new file mode 100644
index 0000000..5e2b105
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.5.adm
@@ -0,0 +1,3 @@
+{ "id": 2, "alias": "Isbel", "name": "IsbelDull", "user-since": datetime("2011-01-22T10:10:00.000Z"), "friend-ids": {{ 1, 4 }}, "employment": [ { "organization-name": "Hexviafind", "start-date": date("2010-04-27"), "end-date": null } ] }
+{ "id": 3, "alias": "Emory", "name": "EmoryUnk", "user-since": datetime("2012-07-10T10:10:00.000Z"), "friend-ids": {{ 1, 5, 8, 9 }}, "employment": [ { "organization-name": "geomedia", "start-date": date("2010-06-17"), "end-date": date("2010-01-26") } ] }
+{ "id": 4, "alias": "Nicholas", "name": "NicholasStroh", "user-since": datetime("2010-12-27T10:10:00.000Z"), "friend-ids": {{ 2 }}, "employment": [ { "organization-name": "Zamcorporation", "start-date": date("2010-06-08"), "end-date": null } ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.6.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.6.adm
new file mode 100644
index 0000000..dba1e35
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.6.adm
@@ -0,0 +1,4 @@
+{ "id": 2, "alias": "Isbel", "name": "IsbelDull", "user-since": datetime("2011-01-22T10:10:00.000Z"), "friend-ids": {{ 1, 4 }}, "employment": [ { "organization-name": "Hexviafind", "start-date": date("2010-04-27"), "end-date": null } ] }
+{ "id": 3, "alias": "Emory", "name": "EmoryUnk", "user-since": datetime("2012-07-10T10:10:00.000Z"), "friend-ids": {{ 1, 5, 8, 9 }}, "employment": [ { "organization-name": "geomedia", "start-date": date("2010-06-17"), "end-date": date("2010-01-26") } ] }
+{ "id": 4, "alias": "Nicholas", "name": "NicholasStroh", "user-since": datetime("2010-12-27T10:10:00.000Z"), "friend-ids": {{ 2 }}, "employment": [ { "organization-name": "Zamcorporation", "start-date": date("2010-06-08"), "end-date": null } ] }
+{ "id": 10, "alias": "Bram", "name": "BramHatch", "user-since": datetime("2010-10-16T10:10:00.000Z"), "friend-ids": {{ 1, 5, 9 }}, "employment": [ { "organization-name": "physcane", "start-date": date("2007-06-05"), "end-date": date("2011-11-05") } ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.7.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.7.adm
new file mode 100644
index 0000000..a403f1b
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.7.adm
@@ -0,0 +1,15 @@
+{ "uname": "BramHatch", "message": " can't stand t-mobile its voicemail-service is OMG:(" }
+{ "uname": "BramHatch", "message": " dislike iphone the voice-command is bad:(" }
+{ "uname": "EmoryUnk", "message": " love sprint its shortcut-menu is awesome:)" }
+{ "uname": "EmoryUnk", "message": " love verizon its wireless is good" }
+{ "uname": "IsbelDull", "message": " like samsung the plan is amazing" }
+{ "uname": "IsbelDull", "message": " like t-mobile its platform is mind-blowing" }
+{ "uname": "MargaritaStoddard", "message": " dislike iphone its touch-screen is horrible" }
+{ "uname": "MargaritaStoddard", "message": " can't stand at&t the network is horrible:(" }
+{ "uname": "MargaritaStoddard", "message": " like verizon the 3G is awesome:)" }
+{ "uname": "MargaritaStoddard", "message": " can't stand motorola the touch-screen is terrible" }
+{ "uname": "MargaritaStoddard", "message": " can't stand at&t its plan is terrible" }
+{ "uname": "SuzannaTillson", "message": " like iphone the voicemail-service is awesome" }
+{ "uname": "VonKemble", "message": " dislike sprint the speed is horrible" }
+{ "uname": "WillisWynne", "message": " love sprint the customization is mind-blowing" }
+{ "uname": "WoodrowNehling", "message": " love at&t its 3G is good:)" }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.8.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.8.adm
new file mode 100644
index 0000000..a403f1b
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.8.adm
@@ -0,0 +1,15 @@
+{ "uname": "BramHatch", "message": " can't stand t-mobile its voicemail-service is OMG:(" }
+{ "uname": "BramHatch", "message": " dislike iphone the voice-command is bad:(" }
+{ "uname": "EmoryUnk", "message": " love sprint its shortcut-menu is awesome:)" }
+{ "uname": "EmoryUnk", "message": " love verizon its wireless is good" }
+{ "uname": "IsbelDull", "message": " like samsung the plan is amazing" }
+{ "uname": "IsbelDull", "message": " like t-mobile its platform is mind-blowing" }
+{ "uname": "MargaritaStoddard", "message": " dislike iphone its touch-screen is horrible" }
+{ "uname": "MargaritaStoddard", "message": " can't stand at&t the network is horrible:(" }
+{ "uname": "MargaritaStoddard", "message": " like verizon the 3G is awesome:)" }
+{ "uname": "MargaritaStoddard", "message": " can't stand motorola the touch-screen is terrible" }
+{ "uname": "MargaritaStoddard", "message": " can't stand at&t its plan is terrible" }
+{ "uname": "SuzannaTillson", "message": " like iphone the voicemail-service is awesome" }
+{ "uname": "VonKemble", "message": " dislike sprint the speed is horrible" }
+{ "uname": "WillisWynne", "message": " love sprint the customization is mind-blowing" }
+{ "uname": "WoodrowNehling", "message": " love at&t its 3G is good:)" }
diff --git a/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.9.adm b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.9.adm
new file mode 100644
index 0000000..09b0f08
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/tinysocial/tinysocial-suite/tinysocial-suite.9.adm
@@ -0,0 +1,10 @@
+{ "uname": "BramHatch", "messages": [ " can't stand t-mobile its voicemail-service is OMG:(", " dislike iphone the voice-command is bad:(" ] }
+{ "uname": "EmoryUnk", "messages": [ " love sprint its shortcut-menu is awesome:)", " love verizon its wireless is good" ] }
+{ "uname": "IsbelDull", "messages": [ " like samsung the plan is amazing", " like t-mobile its platform is mind-blowing" ] }
+{ "uname": "MargaritaStoddard", "messages": [ " dislike iphone its touch-screen is horrible", " can't stand at&t the network is horrible:(", " like verizon the 3G is awesome:)", " can't stand motorola the touch-screen is terrible", " can't stand at&t its plan is terrible" ] }
+{ "uname": "NicholasStroh", "messages": [  ] }
+{ "uname": "NilaMilliron", "messages": [  ] }
+{ "uname": "SuzannaTillson", "messages": [ " like iphone the voicemail-service is awesome" ] }
+{ "uname": "VonKemble", "messages": [ " dislike sprint the speed is horrible" ] }
+{ "uname": "WillisWynne", "messages": [ " love sprint the customization is mind-blowing" ] }
+{ "uname": "WoodrowNehling", "messages": [ " love at&t its 3G is good:)" ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/user-defined-functions/query-issue172/query-issue172.1.adm b/asterix-app/src/test/resources/runtimets/results/user-defined-functions/query-issue172/query-issue172.1.adm
new file mode 100644
index 0000000..aabe6ec
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/user-defined-functions/query-issue172/query-issue172.1.adm
@@ -0,0 +1 @@
+21
diff --git a/asterix-app/src/test/resources/runtimets/testsuite.xml b/asterix-app/src/test/resources/runtimets/testsuite.xml
index 1fb101d..0f3e005 100644
--- a/asterix-app/src/test/resources/runtimets/testsuite.xml
+++ b/asterix-app/src/test/resources/runtimets/testsuite.xml
@@ -1750,6 +1750,11 @@
       </compilation-unit>
     </test-case>
     -->
+    <test-case FilePath="fuzzyjoin">
+      <compilation-unit name="opentype">
+        <output-dir compare="Text">opentype</output-dir>
+      </compilation-unit>
+    </test-case>
   </test-group>
   <test-group name="index-join">
     <test-case FilePath="index-join">
@@ -2155,6 +2160,11 @@
   </test-group>
   <test-group name="numeric">
     <test-case FilePath="numeric">
+      <compilation-unit name="caret0">
+        <output-dir compare="Text">caret0</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="numeric">
       <compilation-unit name="abs0">
         <output-dir compare="Text">abs0</output-dir>
       </compilation-unit>
@@ -2722,11 +2732,27 @@
       </compilation-unit>
     </test-case>
     <test-case FilePath="open-closed">
+      <compilation-unit name="query-issue423">
+        <output-dir compare="Text">query-issue423</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="open-closed">
+      <compilation-unit name="query-issue423-2">
+        <output-dir compare="Text">query-issue423-2</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="open-closed">
       <compilation-unit name="query-issue442">
         <output-dir compare="Text">query-issue442</output-dir>
         <expected-error>edu.uci.ics.asterix.common.exceptions.AsterixException</expected-error>
       </compilation-unit>
     </test-case>
+    <test-case FilePath="open-closed">
+      <compilation-unit name="query-issue487">
+        <output-dir compare="Text">query-issue487</output-dir>
+        <expected-error>edu.uci.ics.asterix.common.exceptions.AsterixException</expected-error>
+      </compilation-unit>
+    </test-case>
   </test-group>
   <test-group name="quantifiers">
     <test-case FilePath="quantifiers">
@@ -3473,6 +3499,11 @@
       </compilation-unit>
     </test-case>
     <test-case FilePath="string">
+      <compilation-unit name="string-to-codepoint2">
+        <output-dir compare="Text">string-to-codepoint2</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="string">
       <compilation-unit name="strlen02">
         <output-dir compare="Text">strlen02</output-dir>
       </compilation-unit>
@@ -3502,7 +3533,6 @@
         <output-dir compare="Text">substr01</output-dir>
       </compilation-unit>
     </test-case>
-    <!-- Issue no 219
     <test-case FilePath="string">
       <compilation-unit name="substr04">
         <output-dir compare="Text">substr04</output-dir>
@@ -3513,7 +3543,6 @@
         <output-dir compare="Text">substr05</output-dir>
       </compilation-unit>
     </test-case>
-    -->
     <test-case FilePath="string">
       <compilation-unit name="substr06">
         <output-dir compare="Text">substr06</output-dir>
@@ -3932,6 +3961,11 @@
       </compilation-unit>
     </test-case>
     <test-case FilePath="user-defined-functions">
+      <compilation-unit name="query-issue172">
+        <output-dir compare="Text">query-issue172</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="user-defined-functions">
       <compilation-unit name="query-issue455">
         <output-dir compare="Text">query-issue455</output-dir>
         <expected-error>edu.uci.ics.asterix.common.exceptions.AsterixException</expected-error>
@@ -4238,6 +4272,11 @@
         <output-dir compare="Text">insert_from_ext_ds</output-dir>
       </compilation-unit>
   	</test-case>
+   <test-case FilePath="temporal">
+    <compilation-unit name="insert_from_ext_ds_2">
+        <output-dir compare="Text">insert_from_ext_ds_2</output-dir>
+      </compilation-unit>
+   </test-case>
   	<test-case FilePath="temporal">
   		<compilation-unit name="interval_functions">
         <output-dir compare="Text">interval_functions</output-dir>
@@ -4283,4 +4322,11 @@
       </compilation-unit>
     </test-case>
   </test-group>
+  <test-group name="tinysocial">
+    <test-case FilePath="tinysocial">
+      <compilation-unit name="tinysocial-suite">
+        <output-dir compare="Text">tinysocial-suite</output-dir>
+      </compilation-unit>
+    </test-case>
+  </test-group>
 </test-suite>
diff --git a/asterix-aql/.gitignore b/asterix-aql/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/asterix-aql/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/asterix-aql/pom.xml b/asterix-aql/pom.xml
index 249299c..f8c652f 100644
--- a/asterix-aql/pom.xml
+++ b/asterix-aql/pom.xml
@@ -30,6 +30,7 @@
 						</goals>
 						<configuration>
 							<isStatic>false</isStatic>
+							<javaUnicodeEscape>true</javaUnicodeEscape>
 						</configuration>
 					</execution>
 					<execution>
diff --git a/asterix-aql/src/main/java/edu/uci/ics/asterix/aql/rewrites/AqlRewriter.java b/asterix-aql/src/main/java/edu/uci/ics/asterix/aql/rewrites/AqlRewriter.java
index 7969941..ae5f3ef 100644
--- a/asterix-aql/src/main/java/edu/uci/ics/asterix/aql/rewrites/AqlRewriter.java
+++ b/asterix-aql/src/main/java/edu/uci/ics/asterix/aql/rewrites/AqlRewriter.java
@@ -155,7 +155,8 @@
         if (expression == null) {
             return;
         }
-
+        String value = metadataProvider.getConfig().get(FunctionUtils.IMPORT_PRIVATE_FUNCTIONS);
+        boolean includePrivateFunctions = (value != null) ? Boolean.valueOf(value.toLowerCase()) : false;
         Set<FunctionSignature> functionCalls = getFunctionCalls(expression);
         for (FunctionSignature signature : functionCalls) {
 
@@ -172,9 +173,7 @@
                     buildOtherUdfs(functionDecl.getFuncBody(), functionDecls, declaredFunctions);
                 }
             } else {
-                String value = metadataProvider.getConfig().get(FunctionUtils.IMPORT_PRIVATE_FUNCTIONS);
-                boolean includePrivateFunctions = (value != null) ? Boolean.valueOf(value.toLowerCase()) : false;
-                if (isBuiltinFunction(signature, includePrivateFunctions)) {
+                if (AsterixBuiltinFunctions.isBuiltinCompilerFunction(signature, includePrivateFunctions)) {
                     continue;
                 } else {
                     throw new AsterixException(" unknown function " + signature);
@@ -195,31 +194,6 @@
 
     }
 
-    private boolean isBuiltinFunction(FunctionSignature signature, boolean includePrivateFunctions) {
-        signature.setNamespace(AsterixBuiltinFunctions.FunctionNamespace.ASTERIX_PUBLIC.name());
-        if (AsterixBuiltinFunctions.isBuiltinCompilerFunction(new FunctionIdentifier(signature.getNamespace(),
-                signature.getName(), signature.getArity()))) {
-            return true;
-        }
-
-        if (includePrivateFunctions) {
-            signature.setNamespace(AlgebricksBuiltinFunctions.ALGEBRICKS_NS);
-            if (AsterixBuiltinFunctions.isBuiltinCompilerFunction(new FunctionIdentifier(signature.getNamespace(),
-                    signature.getName(), signature.getArity()))) {
-                return true;
-            }
-
-            signature.setNamespace(AsterixBuiltinFunctions.FunctionNamespace.ASTERIX_PRIVATE.name());
-            if (AsterixBuiltinFunctions.isBuiltinCompilerFunction(new FunctionIdentifier(signature.getNamespace(),
-                    signature.getName(), signature.getArity()))) {
-                return true;
-            }
-        }
-
-        return false;
-
-    }
-
     private Set<FunctionSignature> getFunctionCalls(Expression expression) throws AsterixException {
         Map<AsterixFunction, DfsColor> color = new HashMap<AsterixFunction, DfsColor>();
         Map<AsterixFunction, List<AsterixFunction>> arcs = new HashMap<AsterixFunction, List<AsterixFunction>>();
diff --git a/asterix-common/.gitignore b/asterix-common/.gitignore
index ea8c4bf..19f2e00 100644
--- a/asterix-common/.gitignore
+++ b/asterix-common/.gitignore
@@ -1 +1,2 @@
 /target
+/target
diff --git a/asterix-common/pom.xml b/asterix-common/pom.xml
index db20c29..fa48b9e 100644
--- a/asterix-common/pom.xml
+++ b/asterix-common/pom.xml
@@ -114,6 +114,16 @@
 			<version>4.8.1</version>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-core</artifactId>
+			<version>2.2.0</version>
+		</dependency>
+		<dependency>
+			<groupId>org.codehaus.jackson</groupId>
+			<artifactId>jackson-mapper-asl</artifactId>
+			<version>1.9.12</version>
+		</dependency>
 	</dependencies>
 
 </project>
diff --git a/asterix-common/src/main/java/edu/uci/ics/asterix/common/api/IAsterixAppRuntimeContext.java b/asterix-common/src/main/java/edu/uci/ics/asterix/common/api/IAsterixAppRuntimeContext.java
index deb51d0..e053989 100644
--- a/asterix-common/src/main/java/edu/uci/ics/asterix/common/api/IAsterixAppRuntimeContext.java
+++ b/asterix-common/src/main/java/edu/uci/ics/asterix/common/api/IAsterixAppRuntimeContext.java
@@ -23,6 +23,8 @@
 
     public ILSMIOOperationScheduler getLSMIOScheduler();
 
+    public int getMetaDataIODeviceId();
+
     public ILSMMergePolicy getLSMMergePolicy();
 
     public IBufferCache getBufferCache();
@@ -42,8 +44,7 @@
     public void setShuttingdown(boolean b);
 
     public void deinitialize() throws HyracksDataException;
-    
+
     public double getBloomFilterFalsePositiveRate();
-    
 
 }
diff --git a/asterix-common/src/main/java/edu/uci/ics/asterix/common/config/AsterixStorageProperties.java b/asterix-common/src/main/java/edu/uci/ics/asterix/common/config/AsterixStorageProperties.java
index d34e4ac..91bdca6 100644
--- a/asterix-common/src/main/java/edu/uci/ics/asterix/common/config/AsterixStorageProperties.java
+++ b/asterix-common/src/main/java/edu/uci/ics/asterix/common/config/AsterixStorageProperties.java
@@ -15,7 +15,7 @@
     private static final int STORAGE_MEMORYCOMPONENT_PAGESIZE_DEFAULT = (32 << 10); // 32KB
 
     private static final String STORAGE_MEMORYCOMPONENT_NUMPAGES_KEY = "storage.memorycomponent.numpages";
-    private static final int STORAGE_MEMORYCOMPONENT_NUMPAGES_DEFAULT = 4096; // ... so 128MB components
+    private static final int STORAGE_MEMORYCOMPONENT_NUMPAGES_DEFAULT = 2048; // ... so 64MB components
 
     private static final String STORAGE_MEMORYCOMPONENT_GLOBALBUDGET_KEY = "storage.memorycomponent.globalbudget";
     private static final long STORAGE_MEMORYCOMPONENT_GLOBALBUDGET_DEFAULT = (1 << 30); // 1GB
diff --git a/asterix-common/src/main/java/edu/uci/ics/asterix/common/dataflow/IAsterixApplicationContextInfo.java b/asterix-common/src/main/java/edu/uci/ics/asterix/common/dataflow/IAsterixApplicationContextInfo.java
index ee05c7a..a057f91 100644
--- a/asterix-common/src/main/java/edu/uci/ics/asterix/common/dataflow/IAsterixApplicationContextInfo.java
+++ b/asterix-common/src/main/java/edu/uci/ics/asterix/common/dataflow/IAsterixApplicationContextInfo.java
@@ -19,17 +19,18 @@
 import edu.uci.ics.hyracks.storage.common.IStorageManagerInterface;
 
 /**
- * Provides methods for obtaining the IIndexRegistryProvider, IStorageManager and
+ * Provides methods for obtaining the IIndexLifecycleManagerProvider, IStorageManagerInterface and
  * ICCApplicationContext implementation.
  */
-public interface IAsterixApplicationContextInfo{
+public interface IAsterixApplicationContextInfo {
 
     /**
+     * Returns an instance of the implementation for IIndexLifecycleManagerProvider.
      * 
+     * @return IIndexLifecycleManagerProvider implementation instance
      */
     public IIndexLifecycleManagerProvider getIndexLifecycleManagerProvider();
 
-   
     /**
      * Returns an instance of the implementation for IStorageManagerInterface.
      * 
@@ -43,5 +44,4 @@
      * @return ICCApplicationContext implementation instance
      */
     public ICCApplicationContext getCCApplicationContext();
-   
 }
diff --git a/asterix-common/src/main/java/edu/uci/ics/asterix/common/functions/FunctionSignature.java b/asterix-common/src/main/java/edu/uci/ics/asterix/common/functions/FunctionSignature.java
index 563b2cf..7520b1f 100644
--- a/asterix-common/src/main/java/edu/uci/ics/asterix/common/functions/FunctionSignature.java
+++ b/asterix-common/src/main/java/edu/uci/ics/asterix/common/functions/FunctionSignature.java
@@ -30,7 +30,7 @@
     }
 
     public String toString() {
-        return rep;
+        return namespace + "." + name + "@" + arity;
     }
 
     @Override
diff --git a/asterix-common/src/test/java/edu/uci/ics/asterix/test/aql/TestsUtils.java b/asterix-common/src/test/java/edu/uci/ics/asterix/test/aql/TestsUtils.java
index acb1e6a..ac8a3bd 100644
--- a/asterix-common/src/test/java/edu/uci/ics/asterix/test/aql/TestsUtils.java
+++ b/asterix-common/src/test/java/edu/uci/ics/asterix/test/aql/TestsUtils.java
@@ -9,13 +9,13 @@
 import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.PrintWriter;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
-import java.util.Iterator;
 import java.util.List;
-import java.util.NoSuchElementException;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
@@ -24,10 +24,15 @@
 import org.apache.commons.httpclient.NameValuePair;
 import org.apache.commons.httpclient.methods.GetMethod;
 import org.apache.commons.httpclient.params.HttpMethodParams;
-import org.json.JSONArray;
+import org.codehaus.jackson.map.JsonMappingException;
 import org.json.JSONException;
 import org.json.JSONObject;
 
+import com.fasterxml.jackson.core.JsonFactory;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonToken;
+
+import edu.uci.ics.asterix.common.config.GlobalConfig;
 import edu.uci.ics.asterix.testframework.context.TestCaseContext;
 import edu.uci.ics.asterix.testframework.context.TestFileContext;
 import edu.uci.ics.asterix.testframework.xml.TestCase.CompilationUnit;
@@ -135,84 +140,46 @@
         return fname.substring(0, dot + 1) + EXTENSION_AQL_RESULT;
     }
 
-    public static void writeResultsToFile(File actualFile, JSONObject result) throws IOException, JSONException {
+    public static void writeResultsToFile(File actualFile, InputStream resultStream) throws IOException, JSONException {
         BufferedWriter writer = new BufferedWriter(new FileWriter(actualFile));
-        Results res = new Results(result);
-        for (String line : res) {
-            writer.write(line);
-            writer.newLine();
-        }
-        writer.close();
-    }
-
-    public static class Results implements Iterable<String> {
-        private final JSONArray chunks;
-
-        public Results(JSONObject result) throws JSONException {
-            chunks = result.getJSONArray("results");
-        }
-
-        public Iterator<String> iterator() {
-            return new ResultIterator(chunks);
+        try {
+            JsonFactory jsonFactory = new JsonFactory();
+            JsonParser resultParser = jsonFactory.createParser(resultStream);
+            while (resultParser.nextToken() == JsonToken.START_OBJECT) {
+                while (resultParser.nextToken() != JsonToken.END_OBJECT) {
+                    String key = resultParser.getCurrentName();
+                    if (key.equals("results")) {
+                        // Start of array.
+                        resultParser.nextToken();
+                        while (resultParser.nextToken() != JsonToken.END_ARRAY) {
+                            String record = resultParser.getValueAsString();
+                            writer.write(record);
+                        }
+                    } else {
+                        String summary = resultParser.getValueAsString();
+                        if (key.equals("summary")) {
+                            writer.write(summary);
+                            throw new JsonMappingException("Could not find results key in the JSON Object");
+                        }
+                    }
+                }
+            }
+        } finally {
+            writer.close();
         }
     }
 
-    public static class ResultIterator implements Iterator<String> {
-        private final JSONArray chunks;
-
-        private int chunkCounter = 0;
-        private int recordCounter = 0;
-
-        public ResultIterator(JSONArray chunks) {
-            this.chunks = chunks;
-        }
-
-        @Override
-        public boolean hasNext() {
-            JSONArray resultArray;
-            try {
-                resultArray = chunks.getJSONArray(chunkCounter);
-                if (resultArray.getString(recordCounter) != null) {
-                    return true;
-                }
-            } catch (JSONException e) {
-                return false;
-            }
-            return false;
-        }
-
-        @Override
-        public String next() throws NoSuchElementException {
-            JSONArray resultArray;
-            String item = "";
-
-            try {
-                resultArray = chunks.getJSONArray(chunkCounter);
-                item = resultArray.getString(recordCounter);
-                if (item == null) {
-                    throw new NoSuchElementException();
-                }
-                item = item.trim();
-
-                recordCounter++;
-                if (recordCounter >= resultArray.length()) {
-                    chunkCounter++;
-                    recordCounter = 0;
-                }
-            } catch (JSONException e) {
-                throw new NoSuchElementException(e.getMessage());
-            }
-            return item;
-        }
-
-        @Override
-        public void remove() {
-            throw new UnsupportedOperationException();
-        }
+    private static String[] handleError(GetMethod method) throws Exception {
+        String errorBody = method.getResponseBodyAsString();
+        JSONObject result = new JSONObject(errorBody);
+        String[] errors = { result.getJSONArray("error-code").getString(0), result.getString("summary"),
+                result.getString("stacktrace") };
+        return errors;
     }
 
     // Executes Query and returns results as JSONArray
-    public static JSONObject executeQuery(String str) throws Exception {
+    public static InputStream executeQuery(String str) throws Exception {
+        InputStream resultStream = null;
 
         final String url = "http://localhost:19101/query";
 
@@ -227,26 +194,22 @@
         // Provide custom retry handler is necessary
         method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(3, false));
 
-        JSONObject result = null;
-
         try {
             // Execute the method.
             int statusCode = client.executeMethod(method);
 
             // Check if the method was executed successfully.
             if (statusCode != HttpStatus.SC_OK) {
-                System.err.println("Method failed: " + method.getStatusLine());
+                GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, "Method failed: " + method.getStatusLine());
             }
 
-            // Read the response body as String.
-            String responseBody = method.getResponseBodyAsString();
-
-            result = new JSONObject(responseBody);
+            // Read the response body as stream
+            resultStream = method.getResponseBodyAsStream();
         } catch (Exception e) {
-            System.out.println(e.getMessage());
+            GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, e.getMessage(), e);
             e.printStackTrace();
         }
-        return result;
+        return resultStream;
     }
 
     // To execute Update statements
@@ -270,7 +233,10 @@
 
         // Check if the method was executed successfully.
         if (statusCode != HttpStatus.SC_OK) {
-            System.err.println("Method failed: " + method.getStatusLine());
+            GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, "Method failed: " + method.getStatusLine());
+            String[] errors = handleError(method);
+            GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, errors[2]);
+            throw new Exception("DDL operation failed: " + errors[0]);
         }
     }
 
@@ -299,7 +265,10 @@
 
         // Check if the method was executed successfully.
         if (statusCode != HttpStatus.SC_OK) {
-            System.err.println("Method failed: " + method.getStatusLine());
+            GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, "Method failed: " + method.getStatusLine());
+            String[] errors = handleError(method);
+            GlobalConfig.ASTERIX_LOGGER.log(Level.SEVERE, errors[2]);
+            throw new Exception("DDL operation failed: " + errors[0]);
         }
     }
 
@@ -342,7 +311,7 @@
 
         List<CompilationUnit> cUnits = testCaseCtx.getTestCase().getCompilationUnit();
         for (CompilationUnit cUnit : cUnits) {
-            
+
             testFileCtxs = testCaseCtx.getTestFiles(cUnit);
             expectedResultFileCtxs = testCaseCtx.getExpectedResultFiles(cUnit);
 
@@ -358,24 +327,24 @@
                             TestsUtils.executeUpdate(statement);
                             break;
                         case "query":
-                            result = TestsUtils.executeQuery(statement);
-                            if (result.has("error-code")) {
-                                throw new Exception("Test \"" + testFile + "\" FAILED!\n" + result + "\n");
-                            } else {
+                            try {
+                                InputStream resultStream = executeQuery(statement);
                                 expectedResultFile = expectedResultFileCtxs.get(queryCount).getFile();
 
                                 File actualFile = new File(actualPath + File.separator
                                         + testCaseCtx.getTestCase().getFilePath().replace(File.separator, "_") + "_"
                                         + cUnit.getName() + ".adm");
+                                TestsUtils.writeResultsToFile(actualFile, resultStream);
 
                                 File actualResultFile = testCaseCtx.getActualResultFile(cUnit, new File(actualPath));
                                 actualResultFile.getParentFile().mkdirs();
 
-                                TestsUtils.writeResultsToFile(actualFile, result);
-
                                 TestsUtils.runScriptAndCompareWithResult(testFile, new PrintWriter(System.err),
                                         expectedResultFile, actualFile);
-                                LOGGER.info("[TEST]: " + testCaseCtx.getTestCase().getFilePath() + "/" + cUnit.getName() +  " PASSED ");
+                                LOGGER.info("[TEST]: " + testCaseCtx.getTestCase().getFilePath() + "/"
+                                        + cUnit.getName() + " PASSED ");
+                            } catch (JsonMappingException e) {
+                                throw new Exception("Test \"" + testFile + "\" FAILED!\n");
                             }
                             queryCount++;
                             break;
@@ -385,7 +354,7 @@
                         default:
                             throw new IllegalArgumentException("No statements of type " + ctx.getType());
                     }
-                    
+
                 } catch (Exception e) {
                     if (cUnit.getExpectedError().isEmpty()) {
                         throw new Exception("Test \"" + testFile + "\" FAILED!", e);
@@ -393,6 +362,6 @@
                 }
             }
         }
-
     }
 }
+
diff --git a/asterix-doc/src/site/markdown/AdmAql101.md b/asterix-doc/src/site/markdown/AdmAql101.md
index ed4736e..994c464 100644
--- a/asterix-doc/src/site/markdown/AdmAql101.md
+++ b/asterix-doc/src/site/markdown/AdmAql101.md
@@ -211,8 +211,8 @@
 This index will be a B+ tree index; its type is unspecified and _btree_ is the default type.
 The other three illustrate how you can explicitly specify the desired type of index.
 In addition to btree, _rtree_ and inverted _keyword_ indexes are supported by AsterixDB.
-Indexes can also have composite keys, and there are more advanced flavors of text indexing
-available as well (_fuzzy keyword_ and _ngram(k)_, where _k_ is the desired gram length).
+Indexes can also have composite keys, and more advanced text indexing is available as well
+(ngram(k), where k is the desired gram length).
 
 ### Querying the Metadata Dataverse ###
 
diff --git a/asterix-doc/src/site/markdown/AsterixAlphaRelease.md b/asterix-doc/src/site/markdown/AsterixAlphaRelease.md
deleted file mode 100644
index ff9efb2..0000000
--- a/asterix-doc/src/site/markdown/AsterixAlphaRelease.md
+++ /dev/null
@@ -1,57 +0,0 @@
-# AsterixDB: A Big Data Management System _(Alpha Release)_ #
-
-## What Is AsterixDB? ##
-
-Welcome to the new home of the AsterixDB Big Data Management System (BDMS).
-The AsterixDB BDMS is the result of about 3.5 years of R&D involving researchers at UC Irvine, UC Riverside, and UC San Diego.
-The AsterixDB code base now consists of roughly 250K lines of Java code that has been co-developed at UC Irvine and UC Riverside.
-
-Initiated in 2009, the NSF-sponsored ASTERIX project has been developing new technologies for ingesting, storing, managing, indexing, querying, and analyzing vast quantities of semi-structured information.
-The project has been combining ideas from three distinct areas---semi-structured data, parallel databases, and data-intensive computing (a.k.a. today's Big Data platforms)---in order to create a next-generation, open-source software platform that scales by running on large, shared-nothing commodity computing clusters.
-The ASTERIX effort has been targeting a wide range of semi-structured information, ranging from "data" use cases---where information is well-typed and highly regular---to "content" use cases---where data tends to be irregular, much of each datum may be textual, and the ultimate schema for the various data types involved may be hard to anticipate up front.
-The ASTERIX project has been addressing technical issues including highly scalable data storage and indexing, semi-structured query processing on very large clusters, and merging time-tested parallel database techniques with modern data-intensive computing techniques to support performant yet declarative solutions to the problem of storing and analyzing semi-structured information effectively.
-The first fruits of this labor have been captured in the AsterixDB system that is now being released in preliminary or "Alpha" release form.
-We are hoping that the arrival of AsterixDB will mark the beginning of the "BDMS era", and we hope that both the Big Data community and the database community will find the AsterixDB system to be interesting and useful for a much broader class of problems than can be addressed with any one of today's current Big Data platforms and related technologies (e.g., Hadoop, Pig, Hive, HBase, MongoDB, and so on).  One of our project mottos has been "one size fits a bunch"---at least that has been our aim.  For more information about the research effort that led to the birth of AsterixDB, please refer to our NSF project web site: [http://asterix.ics.uci.edu/](http://asterix.ics.uci.edu/).
-
-In a nutshell, AsterixDB is a full-function BDMS with a rich feature set that distinguishes it from pretty much any other Big Data platform that's out and available today.  We believe that its feature set makes it well-suited to modern needs such as web data warehousing and social data storage and analysis.  AsterixDB has:
-
- * A semistructured NoSQL style data model (ADM) resulting from extending JSON with object database ideas
- * An expressive and declarative query language (AQL) that supports a broad range of queries and analysis over semistructured data
- * A parallel runtime query execution engine, Hyracks, that has been scale-tested on up to 1000+ cores and 500+ disks
- * Partitioned LSM-based data storage and indexing to support efficient ingestion and management of semistructured data
- * Support for query access to externally stored data (e.g., data in HDFS) as well as to data stored natively by AsterixDB
- * A rich set of primitive data types, including spatial and temporal data in addition to integer, floating point, and textual data
- * Secondary indexing options that include B+ trees, R trees, and inverted keyword (exact and fuzzy) index types
- * Support for fuzzy and spatial queries as well as for more traditional parametric queries
- * Basic transactional (concurrency and recovery) capabilities akin to those of a NoSQL store
-
-## Getting and Using AsterixDB ##
-
-You are most likely here because you are interested in getting your hands on AsterixDB---so you would like to know how to get it, how to set it up, and how to use it.
-Someday our plan is to have comprehensive documentation for AsterixDB and its data model (ADM) and query language (AQL) here on this wiki.
-For the Alpha release, we've got a start; for the Beta release a month or so from now, we will hopefully have much more.
-The following is a list of the wiki pages and supporting documents that we have available today:
-
-1. [InstallingAsterixUsingManagix](InstallingAsterixUsingManagix.html) :
-This is our installation guide, and it is where you should start.
-This document will tell you how to obtain, install, and manage instances of [AsterixDB](https://asterixdb.googlecode.com/files/asterix-installer-0.0.4-binary-assembly.zip), including both single-machine setup (for developers) as well as cluster installations (for deployment in its intended form).
-
-2. [AdmAql101](AdmAql101.html) :
-This is a first-timers introduction to the user model of the AsterixDB BDMS, by which we mean the view of AsterixDB as seen from the perspective of an "average user" or Big Data application developer.
-The AsterixDB user model consists of its data modeling features (ADM) and its query capabilities (AQL).
-This document presents a tiny "social data warehousing" example and uses it as a backdrop for describing, by example, the key features of AsterixDB.
-By working through this document, you will learn how to define the artifacts needed to manage data in AsterixDB, how to load data into the system, how to use most of the basic features of its query language, and how to insert and delete data dynamically.
-
-3. [AsterixDataTypesAndFunctions](AsterixDataTypesAndFunctions.html) :
-This is a reference document that catalogs the primitive data types and built-in functions available for use in AsterixDB schemas (in ADM) and queries (in AQL).
-
-4. [AQL Reference](AsterixQueryLanguageReference.html) :
-This is the AQL language reference manual.
-
-5. [AsterixDBRestAPI](AsterixDBRestAPI.html) :
-Access to data in an AsterixDB instance is provided via a REST-based API.
-This is a short document that describes the REST API entry points and their URL syntax.
-
-To all who have now come this far: Thanks for your interest in AsterixDB, and for kicking its tires in its Alpha form
-In addition to getting the system and trying it out, please sign up as a member of the AsterixDB user mailing list (asterixdb-users (at) googlegroups.com) so that you can contact us easily with your questions, issues, and other feedback.
-We want AsterixDB to be a "big hit" some day, and we are anxious to see what users do with it and to learn from that feedback what we should be working on most urgently in the next phase of the project.
diff --git a/asterix-doc/src/site/markdown/AsterixDBDataModel.md b/asterix-doc/src/site/markdown/AsterixDBDataModel.md
index ffefd09..2b3523f 100644
--- a/asterix-doc/src/site/markdown/AsterixDBDataModel.md
+++ b/asterix-doc/src/site/markdown/AsterixDBDataModel.md
@@ -1,8 +1,7 @@
 # Asterix Data Model (ADM) #
 
-# Basic data types #
 
-An instance of Asterix data model (ADM) can be a _primitive type_ (`Int32`, `Int64`, `String`, `Float`, `Double`, `Date`, `Time`, `Datetime`, etc. or `NULL`) or a _derived type_.
+An instance of Asterix data model (ADM) can be a _*primitive type*_ (`Int32`, `Int64`, `String`, `Float`, `Double`, `Date`, `Time`, `Datetime`, etc. or `NULL`) or a _*derived type*_.
 
 ## Primitive Types ##
 
@@ -139,7 +138,7 @@
 
 
 ### Circle ###
-`Circle` consists of one `point` that represents the center of the circle and a radius of type `double`.
+`Circle` consists of one point that represents the center of the circle and a radius of type `Double`.
 
  * Example:
 
diff --git a/asterix-doc/src/site/markdown/AsterixQueryLanguage.md b/asterix-doc/src/site/markdown/AsterixQueryLanguage.md
deleted file mode 100644
index af25cda..0000000
--- a/asterix-doc/src/site/markdown/AsterixQueryLanguage.md
+++ /dev/null
@@ -1,195 +0,0 @@
-`<wiki:toc max_depth="2" />`
-
-# The Asterix Query Language, Version 1.0 #
-
-# Introduction #
-
-This wiki page provides an overview of the Asterix Query language and the Asterix Data model.
-
-*WARNING:* _THIS IS AN INCOMPLETE SUSPENDED WORK IN PROGRESS...
-_  It will hopefully be resumed shortly in order to produce a legit AQL spec to go out with the Beta Release of AsterixDB.  What's here is very likely inconsistent with what's in the system as of today, as this was from an older snapshot of the world.
-
-# Asterix Data Model #
-
-Data in Asterix is represented using the Asterix Data Model (ADM). The ADM derives inspiration from prior standards such as JSON, XQuery, and the Object Data Model from ODMG.
-
-## Asterix Types ##
-
-### Primitive Types ##
-
-|| *Primitive Type* || *Description* ||
-|| int8   || Signed 8-bit integer. Valid range -128 thru 127 ||
-|| int16  || Signed 16-bit integer. Valid range -32768 thru 32767 ||
-|| int32  || Signed 32-bit integer. Valid range -2147483648 thru 2147483647 ||
-|| int64  || Signed 64-bit integer. Valid range -9223372036854775807 thru 9223372036854775808 ||
-|| uint8  || Unsigned 8-bit integer. Valid range 0 thru 255 ||
-|| uint16 || Unsigned 16-bit integer. Valid range 0 thru 65535 ||
-|| uint32 || Unsigned 32-bit integer. Valid range 0 thru 4294967295 ||
-|| uint64 || Unsigned 64-bit integer. Valid range 0 thru 18446744073709551615 ||
-|| string || String of characters ||
-|| null   || null type (Type of the null value) ||
-|| date   || Date ||
-|| time   || Time of day ||
-|| boolean || Boolean ||
-|| datetime || Date and time ||
-|| point2d || A point in 2-D space ||
-|| point3d || A point in 3-D space ||
-|| binary || Binary data ||
-|| yminterval || Year-Month interval ||
-|| dtinterval || Day-Time interval ||
-|| interval || Year-Month and Day-Time interval ||
-
-### Collection Types ###
-
-|| *Collection Type* || *Description* ||
-|| Record || A record type describes the record data item. A record contains a set of fields which can have values of any ADM type. Fields of a record must be unique. ||
-|| Union || A union type is an abstract type (A value never has a union type) that describes a set of type choices. ||
-|| Ordered List || An orderedlist instance represents a sequence of values where the order of the instances is determined by creation/insertion ||
-|| UnorderedList || An unorderedlist instance represents a collection of values where the order of the instances where the order is irrelevant ||
-|| Enumeration || An enumeration type represents a choice of string values ||
-
-# AQL Expressions #
-
-## Primary Expressions ##
-
-Primary expressions are the basic expressions that form the core of AQL.
-
-### Literals ###
-
-A Literal is a syntactic representation of a constant value. The various literals allowed in AQL are described in the table below.
-
-|| *Literal type* || *Syntax* ||
-|| StringLiteral || ` STRING_LITERAL : ("\"" ("\\\"" | ~["\""])* "\"") | ("\'"("\\\'" | ~["\'"])* "\'") ` ||
-|| IntegerLiteral || ` INTEGER_LITERAL : (["0" - "9"])+ ` ||
-|| FloatLiteral || ` FLOAT_LITERAL: ((["0" - "9"])* "." (["0" - "9"])+ ("f" | "F")) ` ||
-|| DoubleLiteral || ` DOUBLE_LITERAL: ((["0" - "9"])* "." (["0" - "9"])+) ` ||
-|| NullLiteral || ` NULL_LITERAL: "null" ` ||
-|| BooleanLiteral || ` BOOLEAN_LITERAL: "true" | "false" ` ||
-
-### Function Call ###
-
-Function Calls in AQL can be used to invoke builtin functions as well as user defined functions.
-Function Calls have the following syntax.
-
-
-            IDENTIFIER "(" ( Expression ( "," Expression )* )? ")"
-
-
-### Variable Reference ###
-
-Variables in AQL are used to bind to values. Variables can be bound to values by the For, Let, Group by clauses of the FLWOR expressions. Variables can also be bound by
-the Quantified Expressions.
-
-### Ordered List Constructor ###
-
-Constructs an ordered list. An ordered list represents a collection of values. The order of values is relevant. The collection may contain duplicate values.
-
-### Unordered List Constructor ###
-
-Constructs an unordered list. An unordered list represents a collection of values. The order of values is not relevant. The collection may contain duplicate values.
-
-### Record Constructor ###
-
-Constructs an AQL Record. A record contains fields. Each field has a name and a value. The name of the field is of type string. The value of a field may be any legal ADM data type. A record may not contain duplicate fields.
-
-## Arithmetic Expressions ##
-
-AQL allows all the standard arithmetic operators on numeric data types. The specific operators allowed are:
-
-|| *Operator* || *Description* ||
-|| + || Add ||
-|| - || Subtract ||
-|| * || Multiply ||
-|| / || Divide ||
-|| mod || Modulo ||
-
-## Comparison Expressions ##
-
-AQL provides the six standard comparison expressions listed below. In addition, AQL supports fuzzy comparisons.
-
-|| *Operator* || *Description* ||
-|| = || Equal ||
-|| = || Not Equal ||
-|| `< || Less Than ||
-|| `<= || Less Than or Equal ||
-|| >` || Greater Than ||
-|| >`= || Greater Than or Equal ||
-|| >`= || Greater Than or Equal ||
-|| ~= || Fuzzy Equals ||
-
-## Logical Expressions ##
-
-AQL provides two logical connectors:
-
-|| *Operator* || *Description* ||
-|| and || Logical AND ||
-|| or || Logical OR ||
-
-## Field Access Expressions ##
-
-The "." operator is used to access fields of a record. For example,
-
-
-            $x.name
-
-
-accesses the name field of the record bound to $x.
-
-## Indexed Expressions ##
-
-Indexed expressions are used to access values in an ordered list. For example,
-
-
-            $x[5]
-
-
-accesses the 6th item in the list bound to $x. Indexes start at 0.
-
-## FLWOR Expression ##
-
-The FLWOR expression is the most elaborate expression in AQL. It is made up of two parts -- Clauses and the Return Expression.
-
-The syntax of the FLWOR expression is:
-
-
-        
-        ( ForClause | LetClause )
-        ( ForClause | LetClause | WhereClause | OrderClause | GroupClause | LimitClause | DistinctClause )*
-        "return" ReturnExpression
-        
-
-
-* For Clause
-
-        "for" Variable "in" Expression
-
-* Let Clause
-
-        "let" Variable ":=" Expression
-
-* Where Clause
-
-        "where" Expression
-
-* Order Clause
-
-        "order" "by" Expression ("asc" | "desc") ("," Expression ("asc" | "desc"))*
-
-* Group Clause
-
-        "group" "by" ((Variable ":=")? Expression) ("," ((Variable ":=")? Expression))* "with" Variable
-
-* Limit Clause
-
-        "limit" Expression ("," Expression)?
-
-
-* If Then Else Expressions *
-
-        "if" "(" Expression ")" "then" Expression "else" Expression
-
-
-* Quantified Expressions *
-
-        ("some" | "every") Variable "in" Expression "satisfies" Expression
-
diff --git a/asterix-doc/src/site/markdown/AsterixQueryLanguageReference.md b/asterix-doc/src/site/markdown/AsterixQueryLanguageReference.md
index 1ed876e..eddc157 100644
--- a/asterix-doc/src/site/markdown/AsterixQueryLanguageReference.md
+++ b/asterix-doc/src/site/markdown/AsterixQueryLanguageReference.md
@@ -1,14 +1,39 @@
 # The Asterix Query Language, Version 1.0
 ## 1. Introduction
 
-This document provides an overview of the Asterix Query language.
-
+This document is intended as a reference guide to the full syntax
+and semantics of the Asterix Query Language (AQL), the language for talking to AsterixDB.
+This guide covers both the data manipulation language (DML) aspects of AQL, including
+its support for queries and data modification, as well as its data definition language
+(DDL) aspects.
+ New AsterixDB users are encouraged to read and work through the (friendlier) guide
+"AsterixDB 101: An ADM and AQL Primer" before attempting to make use of this document.
+In addition, readers are advised to read and understand the Asterix Data Model (ADM)
+reference guide since a basic understanding of ADM concepts is a prerequisite to understanding AQL.  
+In what follows, we detail the features of the AQL language in a grammar-guided manner:
+We list and briefly explain each of the productions in the AQL grammar, offering 
+examples for clarity in cases where doing so seems needed or helpful.
 
 ## 2. Expressions
 
-    Expression ::= ( OperatorExpr | IfThenElse | FLWOGR | QuantifiedExpression )
+    Expression ::= ( OperatorExpr | IfThenElse | FLWOR | QuantifiedExpression )
 
+AQL is a fully composable expression language.
+Each AQL expression returns zero or more Asterix Data Model (ADM) instances.
+There are four major kinds of expressions in AQL.
+At the topmost level, an AQL expression can be an
+OperatorExpr (similar to a mathematical expression),
+an IfThenElse (to choose between two alternative values),
+a FLWOR expression (the heart of AQL, pronounced "flower expression"),
+or a QuantifiedExpression (which yields a boolean value).
+Each will be detailed as we explore the full AQL grammar.
 
+### Queries
+
+    Query ::= Expression
+
+An AQL query can be any legal AQL expression.
+    
 ### Primary Expressions
 
     PrimaryExpr ::= Literal
@@ -18,7 +43,15 @@
                   | DatasetAccessExpression
                   | ListConstructor
                   | RecordConstructor
-                  
+
+The most basic building block for any AQL expression is the PrimaryExpr.
+This can be a simple literal (constant) value,
+a reference to a query variable that is in scope,
+a parenthesized expression,
+a function call,
+an expression accessing the ADM contents of a dataset,
+a newly constructed list of ADM instances,
+or a newly constructed ADM record.
 
 #### Literals
 
@@ -31,50 +64,88 @@
               | "false"
     StringLiteral ::= <STRING_LITERAL>
 
+Literals (constants) in AQL can be strings, integers, floating point values,
+double values, boolean constants, or the constant value null.
+The null value in AQL has "unknown" or "missing" value semantics, similar to
+(though not identical to) nulls in the relational query language SQL.
+
+The following are some simple examples of AQL literals.
+Since AQL is an expression language, each example is also a complete, legal AQL query (!).
+
 ##### Examples
 
     "a string"
     42
 
-
 #### Variable References
 
     VariableRef ::= <VARIABLE>
 
-##### Example
+A variable in AQL can be bound to any legal ADM value.
+A variable reference refers to the value to which an in-scope variable is bound.
+(E.g., a variable binding may originate from one of the for or let clauses of a
+FLWOR expression or from an input parameter in the context of an AQL function body.)
 
-    $id  
-    
+##### Examples
+
+    $tweet
+    $id
 
 #### Parenthesized Expressions
-    
+
     ParenthesizedExpression ::= "(" Expression ")"
 
+As in most languages, an expression may be parenthesized.
+
+Since AQL is an expression language, the following example expression is
+actually also a complete, legal AQL query whose result is the value 2.
+(As such, you can have Big Fun explaining to your boss how AsterixDB and AQL can turn
+your 1000-node shared-nothing Big Data cluster into a $5M calculator in its spare time.)
+
 ##### Example
 
     ( 1 + 1 )
 
-
 #### Function Calls
 
     FunctionCallExpr ::= FunctionOrTypeName "(" ( Expression ( "," Expression )* )? ")"
 
+Functions are included in AQL, like most languages, as a way to package useful
+functionality or to componentize complicated or reusable AQL computations.
+A function call is a legal AQL query expression that represents the ADM value
+resulting from the evaluation of its body expression with the given parameter
+bindings; the parameter value bindings can themselves be any AQL expressions.
+
+The following example is a (built-in) function call expression whose value is 8.
+
 ##### Example
 
     string-length("a string")
 
-
 #### Dataset Access
 
     DatasetAccessExpression ::= "dataset" ( ( Identifier ( "." Identifier )? )
                               | ( "(" Expression ")" ) )
     Identifier              ::= <IDENTIFIER> | StringLiteral
 
+Querying Big Data is the main point of AsterixDB and AQL.
+Data in AsterixDB reside in datasets (collections of ADM records),
+each of which in turn resides in some namespace known as a dataverse (data universe).
+Data access in a query expression is accomplished via a DatasetAccessExpression.
+Dataset access expressions are most commonly used in FLWOR expressions, where variables
+are bound to their contents.
+
+
+The following are three examples of legal dataset access expressions.
+The first one accesses a dataset called Customers in the dataverse called SalesDV.
+The second one accesses the Customers dataverse in whatever the current dataverse is.
+The third one does the same thing as the second but uses a slightly older AQL syntax.
+
 ##### Examples
 
-    dataset customers
-    dataset (string-join("customers", $country))
-    
+    dataset SalesDV.Customers
+    dataset Customers
+    dataset("Customers")
 
 #### Constructors
 
@@ -84,17 +155,31 @@
     RecordConstructor        ::= "{" ( FieldBinding ( "," FieldBinding )* )? "}"
     FieldBinding             ::= Expression ":" Expression
 
+A major feature of AQL is its ability to construct new ADM data instances.
+This is accomplished using its constructors for each of the major ADM complex object structures,
+namely lists (ordered or unordered) and records.
+Ordered lists are like JSON arrays, while unordered lists have bag (multiset) semantics.
+Records are built from attributes that are field-name/field-value pairs, again like JSON.
+(See the AsterixDB Data Model document for more details on each.)
+
+The following examples illustrate how to construct a new ordered list with 3 items,
+a new unordered list with 4 items, and a new record with 2 fields, respectively.
+List elements can be homogeneous (as in the first example), which is the common case,
+or they may be heterogeneous (as in the second example).
+The data values and field name values used to construct lists and records in constructors are all simply AQL expressions.
+Thus the list elements, field names, and field values used in constructors can be simple literals (as in these three examples)
+or they can come from query variable references or even arbitrarily complex AQL expressions.
+
 ##### Examples
 
     [ "a", "b", "c" ]
-    
-    {{ 42, "forty-two", "AsterixDB!" }}
-    
-    {
-      "project name"    : "AsterixDB"
-      "project members" : {{ "vinayakb", "dtabass", "chenli" }}
-    } 
 
+    {{ 42, "forty-two", "AsterixDB!", 3.14f }}
+
+    {
+      "project name": "AsterixDB"
+      "project members": {{ "vinayakb", "dtabass", "chenli" }}
+    }
 
 ### Path Expressions
 
@@ -102,48 +187,69 @@
     Field     ::= "." Identifier
     Index     ::= "[" ( Expression | "?" ) "]"
 
+Components of complex types in ADM are accessed via path expressions.
+Path access can be applied to the result of an AQL expression that yields an instance of such a type, e.g., a record or list instance.
+For records, path access is based on field names.
+For ordered lists, path access is based on (zero-based) array-style indexing.
+AQL also supports an "I'm feeling lucky" style index accessor, [?], for selecting an arbitrary element from an ordered list.
+Attempts to access non-existent fields or list elements produce a null (i.e., missing information) result as opposed to signaling a runtime error.
+
+The following examples illustrate field access for a record, index-based element access for an ordered list, and also a composition thereof.
+
 ##### Examples
 
-    { "list" : [ "a", "b", "c"] }.list
-    
-    [ "a", "b", "c"][2]
-    
-    { "list" : [ "a", "b", "c"] }.list[2]
+    ({"list": [ "a", "b", "c"]}).list
 
+    (["a", "b", "c"])[2]
+
+    ({ "list": [ "a", "b", "c"]}).list[2]
 
 ### Logical Expressions
 
     OperatorExpr ::= AndExpr ( "or" AndExpr )*
     AndExpr      ::= RelExpr ( "and" RelExpr )*
-    
+
+As in most languages, boolean expressions can be built up from smaller expressions by combining them with the logical connectives and/or.
+Legal boolean values in AQL are true, false, and null.
+(Nulls in AQL are treated much like SQL treats its unknown truth value in boolean expressions.)
+
+The following is an example of a conjuctive range predicate in AQL.
+It will yield true if $a is bound to 4, null if $a is bound to null, and false otherwise.
+
 ##### Example
 
     $a > 3 and $a < 5
-    
 
 ### Comparison Expressions
 
     RelExpr ::= AddExpr ( ( "<" | ">" | "<=" | ">=" | "=" | "!=" | "~=" ) AddExpr )?
-    
+
+AQL has the usual list of suspects, plus one, for comparing pairs of atomic values.
+The "plus one" is the last operator listed above, which is the "roughly equal" operator provided for similarity queries.
+(See the separate document on AsterixDB Similarity Queries for more details on similarity matching.)
+
+An example comparison expression (which yields the boolean value true) is shown below.
+
 ##### Example
 
     5 > 3
 
-
 ### Arithmetic Expressions
 
     AddExpr  ::= MultExpr ( ( "+" | "-" ) MultExpr )*
     MultExpr ::= UnaryExpr ( ( "*" | "/" | "%" | <CARET> | "idiv" ) UnaryExpr )*
     UnaryExpr ::= ( ( "+" | "-" ) )? ValueExpr
 
+AQL also supports the usual cast of characters for arithmetic expressions.
+The example below evaluates to 25.
+
 ##### Example
 
     3 ^ 2 + 4 ^ 2
 
+###  FLWOR Expression
 
-###  FLWOGR Expression   
-    
-    FLWOGR         ::= ( ForClause | LetClause ) ( Clause )* "return" Expression
+    FLWOR         ::= ( ForClause | LetClause ) ( Clause )* "return" Expression
     Clause         ::= ForClause | LetClause | WhereClause | OrderbyClause
                      | GroupClause | LimitClause | DistinctClause
     ForClause      ::= "for" Variable ( "at" Variable )? "in" ( Expression )
@@ -151,19 +257,46 @@
     WhereClause    ::= "where" Expression
     OrderbyClause  ::= "order" "by" Expression ( ( "asc" ) | ( "desc" ) )? 
                        ( "," Expression ( ( "asc" ) | ( "desc" ) )? )*
-    GroupClause    ::= "group" "by" ( Variable ":=" )? Expression ( "," ( Variable ":=" )? Expression )*          
+    GroupClause    ::= "group" "by" ( Variable ":=" )? Expression ( "," ( Variable ":=" )? Expression )*
                        "with" VariableRef ( "," VariableRef )*
     LimitClause    ::= "limit" Expression ( "offset" Expression )?
     DistinctClause ::= "distinct" "by" Expression ( "," Expression )*
     Variable       ::= <VARIABLE>
 
+The heart of AQL is the FLWOR (for-let-where-orderby-return) expression.
+The roots of this expression were borrowed from the expression of the same name in XQuery.
+A FLWOR expression starts with one or more clauses that establish variable bindings.
+A for clause binds a variable incrementally to each element of its associated expression;
+it includes an optional positional variable for counting/numbering the bindings.
+By default no ordering is implied or assumed by a for clause.
+A let clause binds a variable to the collection of elements computed by its associated expression.
+
+Following the initial for or let clause(s), a FLWOR expression may contain an arbitrary sequence of other clauses.
+The where clause in a FLWOR expression filters the preceding bindings via a boolean expression, much like a where clause does in a SQL query.
+The order by clause in a FLWOR expression induces an ordering on the data.
+The group by clause, discussed further below, forms groups based on its group by expressions,
+optionally naming the expressions' values (which together form the grouping key for the expression).
+The with subclause of a group by clause specifies the variable(s) whose values should be grouped based
+on the grouping key(s); following the grouping clause, only the grouping key(s) and the variables named
+in the with subclause remain in scope, and the named grouping variables now contain lists formed from their input values.
+The limit clause caps the number of values returned, optionally starting its result count from a specified offset.
+(Web applications can use this feature for doing pagination.)
+The distinct clause is similar to the group-by clause, but it forms no groups; it serves only to eliminate duplicate values.
+As indicated by the grammar, the clauses in an AQL query can appear in any order.
+To interpret a query, one can think of data as flowing down through the query from the first clause to the return clause.
+
+The following example shows a FLWOR expression that selects and returns one user from the dataset FacebookUsers.
 
 ##### Example
 
     for $user in dataset FacebookUsers
     where $user.id = 8
     return $user
-    
+
+The next example shows a FLWOR expression that joins two datasets, FacebookUsers and FacebookMessages,
+returning user/message pairs.
+The results contain one record per pair, with result records containing the user's name and an entire message.
+
 ##### Example
 
     for $user in dataset FacebookUsers
@@ -173,8 +306,11 @@
       {
         "uname": $user.name,
         "message": $message.message
-      }; 
-    
+      };
+
+In the next example, a let clause is used to bind a variable to all of a user's FacebookMessages.
+The query returns one record per user, with result records containing the user's name and the set of all messages by that user.
+
 ##### Example
 
     for $user in dataset FacebookUsers
@@ -186,15 +322,22 @@
       {
         "uname": $user.name,
         "messages": $messages
-      }; 
-      
+      };
+
+The following example returns all TwitterUsers ordered by their followers count (most followers first) and language.
+Null is treated as being smaller than any other value if nulls are encountered in the ordering key(s).
+
 ##### Example
-      
+
       for $user in dataset TwitterUsers
       order by $user.followers_count desc, $user.lang asc
       return $user
-      
-* null is smaller than any other value
+
+The next example illustrates the use of the group by clause in AQL.
+After the group by clause in the query, only variables that are either in the group by list or in the with list are in scope.
+The variables in the clause's with list will each contain a collection of items following the group by clause;
+the collected items are the values that the source variable was bound to in the tuples that formed the group.
+Null is handled as a single value for grouping.
 
 ##### Example
 
@@ -207,9 +350,7 @@
           "message" : $messages
         }
 
-* after group by only variables that are either in the group-by-list or in the with-list are in scope
-* the variables in the with-clause contain a collection of items after the group by clause  (all the values that the variable was bound to in the tuples that make up the group)
-* null is handled as a single value for grouping
+The use of the limit clause is illustrated in the next example.
 
 ##### Example
 
@@ -218,8 +359,15 @@
       limit 2
       return $user
 
-##### Example (currently not working)
-    
+The final example shows how AQL's distinct by clause works.
+Each variable in scope before the distinct clause is also in scope after the distinct clause.
+This clause works similarly to group by, but for each variable that contains more than
+one value after the distinct by clause, one value is picked nondeterministically.
+(If the variable is in the distinct by list, then its value will be deterministic.)
+Nulls are treated as a single value when they occur in a grouping field.
+
+##### Example
+
       for $x in dataset FacebookMessages
       distinct by $x.sender-location
       return
@@ -228,25 +376,33 @@
           "message" : $x.message
         }
 
-* every variable that is in-scope before the distinct clause is also in scope after the distinct clause
-* works a lot like group by, but for every variable that contains more than one value after the distinct-by clause, one value is picked non-deterministically
-* if the variable is in the disctict-by list, then value is deterministic
-* null is a single value
-    
 ### Conditional Expression
-    
+
     IfThenElse ::= "if" "(" Expression ")" "then" Expression "else" Expression
 
+A conditional expression is useful for choosing between two alternative values based on a
+boolean condition.  If its first (if) expression is true, its second (then) expression's
+value is returned, and otherwise its third (else) expression is returned.
+
+The following example illustrates the form of a conditional expression.
 ##### Example
 
     if (2 < 3) then "yes" else "no"
 
-
 ### Quantified Expressions
-    
-    QuantifiedExpression ::= ( ( "some" ) | ( "every" ) ) Variable "in" Expression 
+
+    QuantifiedExpression ::= ( ( "some" ) | ( "every" ) ) Variable "in" Expression
                              ( "," Variable "in" Expression )* "satisfies" Expression
-                             
+      
+Quantified expressions are used for expressing existential or universal predicates involving the elements of a collection.
+
+The following pair of examples, each of which returns true, illustrate the use of a quantified
+expression to test that every (or some) element in the set [1, 2, 3] of integers is less than three.
+
+It is useful to note that if the set were instead the empty set, the first expression would yield true
+("every" value in an empty set satisfies the condition) while the second expression would yield false
+(since there isn't "some" value, as there are no values in the set, that satisfies the condition).
+
 ##### Examples
 
     every $x in [ 1, 2, 3] satisfies $x < 3
@@ -264,28 +420,45 @@
                       | InsertStatement
                       | DeleteStatement
                       | Query
-    
-### Declarations    
-    
+
+In addition to expresssions for queries, AQL supports a variety of statements for data
+definition and manipulation purposes as well as controlling the context to be used in
+evaluating AQL  expressions.  This section details the statement side of the AQL language.
+
+### Declarations
+ 
     DataverseDeclaration ::= "use" "dataverse" Identifier
-    SetStatement         ::= "set" Identifier StringLiteral
-    FunctionDeclaration  ::= "declare" "function" Identifier ParameterList "{" Expression "}"
-    ParameterList        ::= "(" ( <VARIABLE> ( "," <VARIABLE> )* )? ")"
+
+The world of data in an AsterixDB cluster is organized into data namespaces called dataverses.
+To set the default dataverse for a series of statements, the use dataverse statement is provided.
+
+As an example, the following statement sets the default dataverse to be TinySocial.
 
 ##### Example
 
     use dataverse TinySocial;
-    
+
+    SetStatement         ::= "set" Identifier StringLiteral
+
+The set statement in AQL is used to control aspects of the expression evalation context for queries.
+
+As an example, the following set statements request that Jaccard similarity with a similarity threshold 0.6
+be used for set similarity matching when the ~= operator is used in a query expression.
+
 ##### Example
 
     set simfunction "jaccard";
     set simthreshold "0.6f"; 
 
-##### Example
+    FunctionDeclaration  ::= "declare" "function" Identifier ParameterList "{" Expression "}"
+    ParameterList        ::= "(" ( <VARIABLE> ( "," <VARIABLE> )* )? ")"
 
-    set simfunction "jaccard";    
-    set simthreshold "0.6f"; 
-    
+When writing a complex AQL query, it can sometimes be helpful to define one or more
+auxilliary functions that each address a sub-piece of the overall query.
+The declare function statement supports the creation of such helper functions.
+
+The following is a very simple example of a temporary AQL function definition.
+
 ##### Example
     
     declare function add($a, $b) {
@@ -303,10 +476,20 @@
     QualifiedName       ::= Identifier ( "." Identifier )?
     DoubleQualifiedName ::= Identifier "." Identifier ( "." Identifier )?
 
+The create statement in AQL is used for creating persistent artifacts in the context of dataverses.
+It can be used to create new dataverses, datatypes, datasets, indexes, and user-defined AQL functions.
+
 #### Dataverses
 
     DataverseSpecification ::= "dataverse" Identifier IfNotExists ( "with format" StringLiteral )?
-    
+
+The create dataverse statement is used to create new dataverses.
+To ease the authoring of reusable AQL scripts, its optional IfNotExists clause allows creation
+to be requested either unconditionally or only if the the dataverse does not already exist.
+If this clause is absent, an error will be returned if the specified dataverse already exists.
+The with format clause is a placeholder for future functionality that can safely be ignored.
+
+The following example creates a dataverse named TinySocial.
 
 ##### Example
 
@@ -324,6 +507,20 @@
     OrderedListTypeDef   ::= "[" ( TypeExpr ) "]"
     UnorderedListTypeDef ::= "{{" ( TypeExpr ) "}}"
 
+The create type statement is used to create a new named ADM datatype.
+This type can then be used to create datasets or utilized when defining one or more other ADM datatypes.
+Much more information about the Asterix Data Model (ADM) is available in the data model reference guide to ADM.
+A new type can be a record type, a renaming of another type, an ordered list type, or an unordered list type.
+A record type can be defined as being either open or closed.
+Instances of a closed record type are not permitted to contain fields other than those specified in the create type statement.
+Instances of an open record type may carry additional fields, and open is the default for a new type (if neither option is specified).
+
+The following example creates a new ADM record type called FacebookUser type.
+Since it is closed, its instances will contain only what is specified in the type definition.
+The first four fields are traditional typed name/value pairs.
+The friend-ids field is an unordered list of 32-bit integers.
+The employment field is an ordered list of instances of another named record type, EmploymentType.
+
 ##### Example
 
     create type FacebookUserType as closed {
@@ -335,7 +532,6 @@
       employment: [EmploymentType]
     }
 
-
 #### Datasets
 
     DatasetSpecification ::= "internal"? "dataset" QualifiedName "(" Identifier ")" IfNotExists
@@ -347,14 +543,33 @@
     KeyValuePair         ::= "(" StringLiteral "=" StringLiteral ")"
     Properties           ::= ( "(" Property ( "," Property )* ")" )?
     Property             ::= Identifier "=" ( StringLiteral | <INTEGER_LITERAL> )
-    ApplyFunction        ::= "apply" "function" FunctionSignature
     FunctionSignature    ::= FunctionOrTypeName "@" <INTEGER_LITERAL>
     PrimaryKey           ::= "primary" "key" Identifier ( "," Identifier )*
 
+The create dataset statement is used to create a new dataset.
+Datasets are named, unordered collections of ADM record instances; they
+are where data lives persistently and are the targets for queries in AsterixDB.
+Datasets are typed, and AsterixDB will ensure that their contents conform to their type definitions.
+An Internal dataset (the default) is a dataset that is stored in and managed by AsterixDB.
+It must have a specified unique primary key that can be used to partition data across nodes of an AsterixDB cluster.
+The primary key is also used in secondary indexes to uniquely identify the indexed primary data records.
+An External dataset is stored outside of AsterixDB, e.g., in HDFS or in the local filesystem(s) of the cluster's nodes.
+External dataset support allows AQL queries to treat external data as though it were stored in AsterixDB,
+making it possible to query "legacy" file data (e.g., Hive data) without having to physically import it into AsterixDB.
+For an external dataset, an appropriate adaptor must be selected to handle the nature of the desired external data.
+(See the guide to external data for more information on the available adaptors.)
+
+The following example creates an internal dataset for storing FacefookUserType records.
+It specifies that their id field is their primary key.
 
 ##### Example
     create internal dataset FacebookUsers(FacebookUserType) primary key id;
 
+The next example creates an external dataset for storing LineitemType records.
+The choice of the localfs adaptor means that its data will reside in the local filesystem of the cluster nodes.
+The create statement provides several parameters used by the localfs adaptor;
+e.g., the file format is delimited text with vertical bar being the field delimiter.
+
 ##### Example
 
     create external dataset Lineitem(LineitemType) using localfs (
@@ -369,26 +584,46 @@
     IndexType          ::= "btree"
                          | "rtree"
                          | "keyword"
-                         | "fuzzy keyword"
                          | "ngram" "(" <INTEGER_LITERAL> ")"
-                         | "fuzzy ngram" "(" <INTEGER_LITERAL> ")"
+
+The create index statement creates a secondary index on one or more fields of a specified dataset.
+Supported index types include btree for totally ordered datatypes,
+rtree for spatial data,
+and keyword and ngram for textual (string) data.
+AsterixDB currently requires indexed fields to be part of the named type associated with a dataset.
+(Future plans include support for indexing of open fields as well.)
+
+The following example creates a btree index called fbAuthorIdx on the author-id field of the FacebookMessages dataset.
+This index can be useful for accelerating exact-match queries, range search queries, and joins involving the author-id field.
 
 ##### Example
 
     create index fbAuthorIdx on FacebookMessages(author-id) type btree;
 
+The following example creates an rtree index called fbSenderLocIdx on the sender-location field of the FacebookMessages dataset.
+This index can be useful for accelerating spatial searches involving the sender-loction field.
+
 ##### Example
 
     create index fbSenderLocIndex on FacebookMessages(sender-location) type rtree;
 
+The following example creates a keyword index called fbMessageIdx on the message field of the FacebookMessages dataset.
+This index can be useful for accelerating text searches involving the message field.
+
 ##### Example
 
     create index fbMessageIdx on FacebookMessages(message) type keyword;
 
-
 #### Functions
 
+The create function statement creates a named function that can then be used and reused in AQL queries.
+The body of a function can be any AQL expression involving the function's parameters.
+
     FunctionSpecification ::= "function" FunctionOrTypeName IfNotExists ParameterList "{" Expression "}"
+
+The following is a very simple example of a create function statement.
+It differs from the declare function example shown previously in that it results in a function that is
+persistently registered by name in the specified dataverse.
     
 ##### Example
     
@@ -396,7 +631,6 @@
       $a + $b
     };
     
-
 #### Removal
 
     DropStatement       ::= "drop" ( "dataverse" Identifier IfExists
@@ -405,7 +639,12 @@
                                    | "index" DoubleQualifiedName IfExists
                                    | "function" FunctionSignature IfExists )
     IfExists            ::= ( "if" "exists" )?
-    
+
+The drop statement in AQL is the inverse of the create statement.
+It can be used to drop dataverses, datatypes, datasets, indexes, and functions.
+
+The following examples illustrate uses of the drop statement.
+ 
 ##### Example
 
     drop dataset FacebookUsers if exists;
@@ -425,38 +664,66 @@
 ##### Example
 
     drop function add;
-    
 
 ### Import/Export Statements
 
     LoadStatement  ::= "load" "dataset" QualifiedName "using" AdapterName Configuration ( "pre-sorted" )?
     
+The load statement is used to initially populate a dataset via bulk loading of data from an external file.
+An appropriate adaptor must be selected to handle the nature of the desired external data.
+(See the guide to external data for more information on the available adaptors.)
+
+The following example shows how to bulk load the FacebookUsers dataset from an external file containing
+data that has been prepared in ADM format.
+
 ##### Example
 
     load dataset FacebookUsers using localfs
     (("path"="localhost:///Users/zuck/AsterixDB/load/fbu.adm"),("format"="adm"));
 
-
 ### Modification Statements
 
     InsertStatement ::= "insert" "into" "dataset" QualifiedName Query
-    DeleteStatement ::= "delete" Variable "from" "dataset" QualifiedName ( "where" Expression )?
+
+The AQL insert statement is used to insert data into a dataset.
+The data to be inserted comes from an AQL query expression.
+The expression can be as simple as a constant expression, or in general it can be any legal AQL query.
+Inserts in AsterixDB are processed transactionally, with the scope of each insert transaction
+being the insertion of a single object plus its affiliated secondary index entries (if any).
+If the query part of an insert returns a single object, then the insert statement itself will
+be a single, atomic transaction.
+If the query part returns multiple objects, then each object inserted will be handled independently
+as a tranaction.
+
+The following example illustrates a query-based insertion.
     
 ##### Example
 
     insert into dataset UsersCopy (for $user in dataset FacebookUsers return $user)
 
+    DeleteStatement ::= "delete" Variable "from" "dataset" QualifiedName ( "where" Expression )?
+
+The AQL delete statement is used to delete data from a target dataset.
+The data to be deleted is identified by a boolean expression involving the variable bound to the
+target dataset in the delete statement.
+Deletes in AsterixDB are processed transactionally, with the scope of each delete transaction
+being the deletion of a single object plus its affiliated secondary index entries (if any).
+If the boolean expression for a delete identifies a single object, then the delete statement itself
+will be a single, atomic transaction.
+If the expression identifies multiple objects, then each object deleted will be handled independently
+as a tranaction.
+
+The following example illustrates a single-object deletion.
+
 ##### Example
     
     delete $user from dataset FacebookUsers where $user.id = 8;
-    
 
-### Queries
-
-    Query ::= Expression
+We close this guide to AQL with one final example of a query expression.
     
 ##### Example
     
     for $praise in {{ "great", "brilliant", "awesome" }}
     return
-       string-concat(["AsterixDB is ", $praise])
+       string-concat(["AsterixDB is ", $praise]
+
diff --git a/asterix-doc/src/site/markdown/AsterixSimilarityQueries.md b/asterix-doc/src/site/markdown/AsterixSimilarityQueries.md
deleted file mode 100644
index 4f22fef..0000000
--- a/asterix-doc/src/site/markdown/AsterixSimilarityQueries.md
+++ /dev/null
@@ -1,83 +0,0 @@
-# AsterixDB Support of Similarity Queries #
-
-## Motivation ##
-
-Similarity queries are widely used in applications where users need to find records that satisfy a similarity predicate, while exact matching is not sufficient. These queries are especially important for social and Web applications, where errors, abbreviations, and inconsistencies are common.  As an example, we may want to find all the movies starring Schwarzenegger, while we don't know the exact spelling of his last name (despite his popularity in both the movie industry and politics :-)). As another example, we want to find all the Facebook users who have similar friends. To meet this type of needs, AsterixDB supports similarity queries using efficient indexes and algorithms.
-
-## Data Types and Similarity Functions ##
-
-AsterixDB supports various similarity functions, including [edit distance](http://en.wikipedia.org/wiki/Levenshtein_distance) (on strings) and [Jaccard](http://en.wikipedia.org/wiki/Jaccard_index) (on sets). For instance, in our [TinySocial](AdmAql101.html#ADM:_Modeling_Semistructed_Data_in_AsterixDB) example, the `friend-ids` of a Facebook user forms a set of friends, and we can define a similarity between two sets. We can also convert a string to a set of "q-grams" and define the Jaccard similarity between the two sets of two strings. The "q-grams" of a string are its substrings of length "q". For instance, the 3-grams of the string `schwarzenegger` are `sch`, `chw`, `hwa`, ..., `ger`.
-
-AsterixDB provides [tokenization functions](AsterixDataTypesAndFunctions.html#Tokenizing_Functions) to convert strings to sets, and the [similarity functions](AsterixDataTypesAndFunctions.html#Similarity_Functions).
-
-## Selection Queries ##
-
-The following [query](AsterixDataTypesAndFunctions.html#edit-distance) asks for all the Facebook users whose name is similar to `Suzanna Tilson`, i.e., their edit distance is at most 2.
-
-
-        use dataverse TinySocial;
-        
-        for $user in dataset('FacebookUsers')
-        let $ed := edit-distance($user.name, "Suzanna Tilson")
-        where $ed <= 2
-        return $user
-
-
-The following [query](AsterixDataTypesAndFunctions.html#similarity-jaccard) asks for all the Facebook users whose set of friend ids is similar to `[1,5,9]`, i.e., their Jaccard similarity is at least 0.6.
-
-
-        use dataverse TinySocial;
-        
-        for $user in dataset('FacebookUsers')
-        let $sim := similarity-jaccard($user.friend-ids, [1,5,9])
-        where $sim >= 0.6f
-        return $user
-
-
-AsterixDB allows a user to use a similarity operator `~=` to express a similarity condition by defining the similiarty function and threshold using "set" statements earlier. For instance, the above query can be equivalently written as:
-
-
-        use dataverse TinySocial;
-        
-        set simfunction "jaccard";
-        set simthreshold "0.6f";
-        
-        for $user in dataset('FacebookUsers')
-        where $user.friend-ids ~= [1,5,9]
-        return $user
-
-
-
-## Fuzzy Join Queries ##
-
-AsterixDB supports fuzzy joins between two data sets. The following [query](AdmAql101.html#Query_5_-_Fuzzy_Join) finds, for each Facebook user, all Twitter users with names "similar" to their name based on the edit distance.
-
-
-        use dataverse TinySocial;
-        
-        set simfunction "edit-distance";
-        set simthreshold "3";
-        
-        for $fbu in dataset FacebookUsers
-        return {
-            "id": $fbu.id,
-            "name": $fbu.name,
-            "similar-users": for $t in dataset TweetMessages
-                                let $tu := $t.user
-                                where $tu.name ~= $fbu.name
-                                return {
-                                "twitter-screenname": $tu.screen-name,
-                                "twitter-name": $tu.name
-                                }
-        };
-
-
-## Using Indexes ##
-
-AsterixDB uses inverted index to support similarity queries efficiently. For instance, the following query creates such an index on the `FacebookUser.name` attribute using an inverted index of 3-grams.  After the index is created, similarity queries with an edit distance condition on this attribute can be answered more efficiently.
-
-
-        use dataverse TinySocial;
-        
-        create index fbUserFuzzyIdx on FacebookUsers(name) type ngram(3);
-
diff --git a/asterix-doc/src/site/markdown/SimilarityQuery.md b/asterix-doc/src/site/markdown/SimilarityQuery.md
new file mode 100644
index 0000000..6f332ea
--- /dev/null
+++ b/asterix-doc/src/site/markdown/SimilarityQuery.md
@@ -0,0 +1,174 @@
+
+# AsterixDB  Support of Similarity Queries # 
+
+## Motivation ## 
+
+Similarity queries are widely used in applications where users need to
+find records that satisfy a similarity predicate, while exact matching
+is not sufficient. These queries are especially important for social
+and Web applications, where errors, abbreviations, and inconsistencies
+are common.  As an example, we may want to find all the movies
+starring Schwarzenegger, while we don't know the exact spelling of his
+last name (despite his popularity in both the movie industry and
+politics :-)). As another example, we want to find all the Facebook
+users who have similar friends. To meet this type of needs, AsterixDB
+supports similarity queries using efficient indexes and algorithms.
+
+## Data Types and Similarity Functions ## 
+
+AsterixDB supports [edit distance](http://en.wikipedia.org/wiki/Levenshtein_distance) (on strings) and
+[Jaccard](http://en.wikipedia.org/wiki/Jaccard_index) (on sets).  For
+instance, in our
+[TinySocial](AdmAql101.html#ADM:_Modeling_Semistructed_Data_in_AsterixDB)
+example, the `friend-ids` of a Facebook user forms a set
+of friends, and we can define a similarity between the sets of
+friends of two users. We can also convert a string to a set of grams of a length "n"
+(called "n-grams") and define the Jaccard similarity between the two
+gram sets of the two strings. Formally, the "n-grams" of a string are
+its substrings of length "n". For instance, the 3-grams of the string
+`schwarzenegger` are `sch`, `chw`, `hwa`, ..., `ger`.
+
+AsterixDB provides
+[tokenization functions](AsterixDBFunctions.html#Tokenizing_Functions)
+to convert strings to sets, and the
+[similarity functions](AsterixDBFunctions.html#Similarity_Functions).
+
+## Similarity Selection Queries ## 
+
+The following [query](AsterixDBFunctions.html#edit-distance)
+asks for all the Facebook users whose name is similar to
+`Suzanna Tilson`, i.e., their edit distance is at most 2.
+
+        use dataverse TinySocial;
+        
+        for $user in dataset('FacebookUsers')
+        let $ed := edit-distance($user.name, "Suzanna Tilson")
+        where $ed <= 2
+        return $user
+
+
+The following [query](AsterixDBFunctions.html#similarity-jaccard)
+asks for all the Facebook users whose set of friend ids is
+similar to `[1,5,9]`, i.e., their Jaccard similarity is at least 0.6.
+
+        use dataverse TinySocial;
+        
+        for $user in dataset('FacebookUsers')
+        let $sim := similarity-jaccard($user.friend-ids, [1,5,9])
+        where $sim >= 0.6f
+        return $user
+
+
+AsterixDB allows a user to use a similarity operator `~=` to express a
+condition by defining the similarity function and threshold
+using "set" statements earlier. For instance, the above query can be
+equivalently written as:
+
+        use dataverse TinySocial;
+        
+        set simfunction "jaccard";
+        set simthreshold "0.6f";
+        
+        for $user in dataset('FacebookUsers')
+        where $user.friend-ids ~= [1,5,9]
+        return $user
+
+
+In this query, we first declare Jaccard as the similarity function
+using `simfunction` and then specify the threshold `0.6f` using
+`simthreshold`.
+
+## Similarity Join Queries ## 
+
+AsterixDB supports fuzzy joins between two sets. The following
+[query](AdmAql101.html#Query_5_-_Fuzzy_Join)
+finds, for each Facebook user, all Twitter users with names
+similar to their name based on the edit distance.
+
+        use dataverse TinySocial;
+        
+        set simfunction "edit-distance";
+        set simthreshold "3";
+	
+        for $fbu in dataset FacebookUsers
+        return {
+            "id": $fbu.id,
+            "name": $fbu.name,
+            "similar-users": for $t in dataset TweetMessages
+                                let $tu := $t.user
+                                where $tu.name ~= $fbu.name
+                                return {
+                                "twitter-screenname": $tu.screen-name,
+                                "twitter-name": $tu.name
+                                }
+        };
+
+## Using Indexes to Support Similarity Queries ## 
+
+AsterixDB uses two types of indexes to support similarity queries, namely
+"ngram index" and "keyword index".
+
+### NGram Index ###
+
+An "ngram index" is constructed on a set of strings.  We generate n-grams for each string, and build an inverted
+list for each n-gram that includes the ids of the strings with this
+gram.  A similarity query can be answered efficiently by accessing the
+inverted lists of the grams in the query and counting the number of
+occurrences of the string ids on these inverted lists.  The similar
+idea can be used to answer queries with Jaccard similarity.  A
+detailed description of these techniques is available at this
+[paper](http://www.ics.uci.edu/~chenli/pub/icde2009-memreducer.pdf).
+
+For instance, the following DDL statements create an ngram index on the
+`FacebookUsers.name` attribute using an inverted index of 3-grams.
+
+        use dataverse TinySocial;
+        
+        create index fbUserIdx on FacebookUsers(name) type ngram(3);
+
+The number "3" in "ngram(3)" is the length "n" in the grams. This
+index can be used to optimize similarity queries on this attribute
+using 
+[edit-distance](AsterixDBFunctions.html#edit-distance), 
+[edit-distance-check](AsterixDBFunctions.html#edit-distance-check), 
+[jaccard](AsterixDBFunctions.html#similarity-jaccard),
+or [jaccard-check](AsterixDBFunctions.html#similarity-jaccard-check) 
+queries on this attribute where the
+similarity is defined on sets of 3-grams.  This index can also be used
+to optimize queries with the "[contains()]((AsterixDBFunctions.html#contains))" predicate (i.e., substring
+matching) since it can be also be solved by counting on the inverted
+lists of the grams in the query string.
+
+### Keyword Index ###
+
+A "keyword index" is constructed on a set of strings or sets (e.g., OrderedList, UnorderedList). Instead of 
+generating grams as in an ngram index, we generate tokens (e.g., words) and for each token, construct an inverted list that includes the ids of the
+records with this token.  The following two examples show how to create keyword index on two different types:
+
+
+#### Keyword Index on String Type ####
+
+        use dataverse TinySocial;
+
+        create index fbMessageIdx on FacebookMessages(message) type keyword;
+
+        for $o in dataset('FacebookMessages')
+        let $jacc := similarity-jaccard-check(word-tokens($o.message), word-tokens("love like verizon"), 0.2f)
+        where $jacc[0]
+        return $o
+        
+#### Keyword Index on UnorderedList Type ####
+        
+        use dataverse TinySocial;
+
+        create index fbUserIdx_fids on FacebookUsers(friend-ids) type keyword;
+
+        for $c in dataset('FacebookUsers')
+        let $jacc := similarity-jaccard-check($c.friend-ids, {{3,10}}, 0.5f)
+        where $jacc[0]
+        return $c
+        
+As shown above, keyword index can be used to optimize queries with token-based similarity predicates, including
+[similarity-jaccard](AsterixDBFunctions.html#similarity-jaccard) and
+[similarity-jaccard-check](AsterixDBFunctions.html#similarity-jaccard-check).
+
diff --git a/asterix-doc/src/site/markdown/index.md b/asterix-doc/src/site/markdown/index.md
index cba2fdc..ff9efb2 100644
--- a/asterix-doc/src/site/markdown/index.md
+++ b/asterix-doc/src/site/markdown/index.md
@@ -1 +1,57 @@
-# AsterixDB
+# AsterixDB: A Big Data Management System _(Alpha Release)_ #
+
+## What Is AsterixDB? ##
+
+Welcome to the new home of the AsterixDB Big Data Management System (BDMS).
+The AsterixDB BDMS is the result of about 3.5 years of R&D involving researchers at UC Irvine, UC Riverside, and UC San Diego.
+The AsterixDB code base now consists of roughly 250K lines of Java code that has been co-developed at UC Irvine and UC Riverside.
+
+Initiated in 2009, the NSF-sponsored ASTERIX project has been developing new technologies for ingesting, storing, managing, indexing, querying, and analyzing vast quantities of semi-structured information.
+The project has been combining ideas from three distinct areas---semi-structured data, parallel databases, and data-intensive computing (a.k.a. today's Big Data platforms)---in order to create a next-generation, open-source software platform that scales by running on large, shared-nothing commodity computing clusters.
+The ASTERIX effort has been targeting a wide range of semi-structured information, ranging from "data" use cases---where information is well-typed and highly regular---to "content" use cases---where data tends to be irregular, much of each datum may be textual, and the ultimate schema for the various data types involved may be hard to anticipate up front.
+The ASTERIX project has been addressing technical issues including highly scalable data storage and indexing, semi-structured query processing on very large clusters, and merging time-tested parallel database techniques with modern data-intensive computing techniques to support performant yet declarative solutions to the problem of storing and analyzing semi-structured information effectively.
+The first fruits of this labor have been captured in the AsterixDB system that is now being released in preliminary or "Alpha" release form.
+We are hoping that the arrival of AsterixDB will mark the beginning of the "BDMS era", and we hope that both the Big Data community and the database community will find the AsterixDB system to be interesting and useful for a much broader class of problems than can be addressed with any one of today's current Big Data platforms and related technologies (e.g., Hadoop, Pig, Hive, HBase, MongoDB, and so on).  One of our project mottos has been "one size fits a bunch"---at least that has been our aim.  For more information about the research effort that led to the birth of AsterixDB, please refer to our NSF project web site: [http://asterix.ics.uci.edu/](http://asterix.ics.uci.edu/).
+
+In a nutshell, AsterixDB is a full-function BDMS with a rich feature set that distinguishes it from pretty much any other Big Data platform that's out and available today.  We believe that its feature set makes it well-suited to modern needs such as web data warehousing and social data storage and analysis.  AsterixDB has:
+
+ * A semistructured NoSQL style data model (ADM) resulting from extending JSON with object database ideas
+ * An expressive and declarative query language (AQL) that supports a broad range of queries and analysis over semistructured data
+ * A parallel runtime query execution engine, Hyracks, that has been scale-tested on up to 1000+ cores and 500+ disks
+ * Partitioned LSM-based data storage and indexing to support efficient ingestion and management of semistructured data
+ * Support for query access to externally stored data (e.g., data in HDFS) as well as to data stored natively by AsterixDB
+ * A rich set of primitive data types, including spatial and temporal data in addition to integer, floating point, and textual data
+ * Secondary indexing options that include B+ trees, R trees, and inverted keyword (exact and fuzzy) index types
+ * Support for fuzzy and spatial queries as well as for more traditional parametric queries
+ * Basic transactional (concurrency and recovery) capabilities akin to those of a NoSQL store
+
+## Getting and Using AsterixDB ##
+
+You are most likely here because you are interested in getting your hands on AsterixDB---so you would like to know how to get it, how to set it up, and how to use it.
+Someday our plan is to have comprehensive documentation for AsterixDB and its data model (ADM) and query language (AQL) here on this wiki.
+For the Alpha release, we've got a start; for the Beta release a month or so from now, we will hopefully have much more.
+The following is a list of the wiki pages and supporting documents that we have available today:
+
+1. [InstallingAsterixUsingManagix](InstallingAsterixUsingManagix.html) :
+This is our installation guide, and it is where you should start.
+This document will tell you how to obtain, install, and manage instances of [AsterixDB](https://asterixdb.googlecode.com/files/asterix-installer-0.0.4-binary-assembly.zip), including both single-machine setup (for developers) as well as cluster installations (for deployment in its intended form).
+
+2. [AdmAql101](AdmAql101.html) :
+This is a first-timers introduction to the user model of the AsterixDB BDMS, by which we mean the view of AsterixDB as seen from the perspective of an "average user" or Big Data application developer.
+The AsterixDB user model consists of its data modeling features (ADM) and its query capabilities (AQL).
+This document presents a tiny "social data warehousing" example and uses it as a backdrop for describing, by example, the key features of AsterixDB.
+By working through this document, you will learn how to define the artifacts needed to manage data in AsterixDB, how to load data into the system, how to use most of the basic features of its query language, and how to insert and delete data dynamically.
+
+3. [AsterixDataTypesAndFunctions](AsterixDataTypesAndFunctions.html) :
+This is a reference document that catalogs the primitive data types and built-in functions available for use in AsterixDB schemas (in ADM) and queries (in AQL).
+
+4. [AQL Reference](AsterixQueryLanguageReference.html) :
+This is the AQL language reference manual.
+
+5. [AsterixDBRestAPI](AsterixDBRestAPI.html) :
+Access to data in an AsterixDB instance is provided via a REST-based API.
+This is a short document that describes the REST API entry points and their URL syntax.
+
+To all who have now come this far: Thanks for your interest in AsterixDB, and for kicking its tires in its Alpha form
+In addition to getting the system and trying it out, please sign up as a member of the AsterixDB user mailing list (asterixdb-users (at) googlegroups.com) so that you can contact us easily with your questions, issues, and other feedback.
+We want AsterixDB to be a "big hit" some day, and we are anxious to see what users do with it and to learn from that feedback what we should be working on most urgently in the next phase of the project.
diff --git a/asterix-doc/src/site/site.xml b/asterix-doc/src/site/site.xml
index 6724153..4953eb4 100644
--- a/asterix-doc/src/site/site.xml
+++ b/asterix-doc/src/site/site.xml
@@ -29,7 +29,6 @@
     </links>
 
     <menu name="Documentation">
-      <item name="AsterixDB: A Big Data Management System" href="AsterixAlphaRelease.html"/>
       <item name="Installing Asterix using Managix" href="InstallingAsterixUsingManagix.html"/>
       <item name="AsterixDB 101: An ADM and AQL Primer" href="AdmAql101.html"/>
       <item name="Asterix Data Model (ADM)" href="AsterixDBDataModel.html"/>
@@ -38,7 +37,6 @@
       <item name="AsterixDB Support of Similarity Queries" href="AsterixSimilarityQueries.html"/>
       <item name="Accessing External Data in AsterixDB" href="AccessingExternalDataInAsterixDB.html"/>
       <item name="REST API to AsterixDB" href="AsterixDBRestAPI.html"/>
-      <item name="(old AQL doc)" href="AsterixQueryLanguage.html"/>      
     </menu>
 
     <menu ref="reports"/>
diff --git a/asterix-events/.gitignore b/asterix-events/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/asterix-events/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/asterix-events/pom.xml b/asterix-events/pom.xml
index 94042e1..108bde2 100644
--- a/asterix-events/pom.xml
+++ b/asterix-events/pom.xml
@@ -173,5 +173,10 @@
      <type>jar</type>
      <scope>compile</scope>
     </dependency>
+   <dependency>
+   	<groupId>log4j</groupId>
+   	<artifactId>log4j</artifactId>
+   	<version>1.2.9</version>
+   </dependency>
   </dependencies>
 </project>
diff --git a/asterix-examples/src/main/resources/tiny-social/data/fbm.adm b/asterix-examples/src/main/resources/tiny-social/data/fbm.adm
new file mode 100644
index 0000000..58d7f08
--- /dev/null
+++ b/asterix-examples/src/main/resources/tiny-social/data/fbm.adm
@@ -0,0 +1,15 @@
+{"message-id":1,"author-id":3,"in-response-to":2,"sender-location":point("47.16,77.75"),"message":" love sprint its shortcut-menu is awesome:)"}
+{"message-id":2,"author-id":1,"in-response-to":4,"sender-location":point("41.66,80.87"),"message":" dislike iphone its touch-screen is horrible"}
+{"message-id":3,"author-id":2,"in-response-to":4,"sender-location":point("48.09,81.01"),"message":" like samsung the plan is amazing"}
+{"message-id":4,"author-id":1,"in-response-to":2,"sender-location":point("37.73,97.04"),"message":" can't stand at&t the network is horrible:("}
+{"message-id":5,"author-id":6,"in-response-to":2,"sender-location":point("34.7,90.76"),"message":" love sprint the customization is mind-blowing"}
+{"message-id":6,"author-id":2,"in-response-to":1,"sender-location":point("31.5,75.56"),"message":" like t-mobile its platform is mind-blowing"}
+{"message-id":7,"author-id":5,"in-response-to":15,"sender-location":point("32.91,85.05"),"message":" dislike sprint the speed is horrible"}
+{"message-id":8,"author-id":1,"in-response-to":11,"sender-location":point("40.33,80.87"),"message":" like verizon the 3G is awesome:)"}
+{"message-id":9,"author-id":3,"in-response-to":12,"sender-location":point("34.45,96.48"),"message":" love verizon its wireless is good"}
+{"message-id":10,"author-id":1,"in-response-to":12,"sender-location":point("42.5,70.01"),"message":" can't stand motorola the touch-screen is terrible"}
+{"message-id":11,"author-id":1,"in-response-to":1,"sender-location":point("38.97,77.49"),"message":" can't stand at&t its plan is terrible"}
+{"message-id":12,"author-id":10,"in-response-to":6,"sender-location":point("42.26,77.76"),"message":" can't stand t-mobile its voicemail-service is OMG:("}
+{"message-id":13,"author-id":10,"in-response-to":4,"sender-location":point("42.77,78.92"),"message":" dislike iphone the voice-command is bad:("}
+{"message-id":14,"author-id":9,"in-response-to":12,"sender-location":point("41.33,85.28"),"message":" love at&t its 3G is good:)"}
+{"message-id":15,"author-id":7,"in-response-to":11,"sender-location":point("44.47,67.11"),"message":" like iphone the voicemail-service is awesome"}
diff --git a/asterix-examples/src/main/resources/tiny-social/data/fbu.adm b/asterix-examples/src/main/resources/tiny-social/data/fbu.adm
new file mode 100644
index 0000000..7e99ea4
--- /dev/null
+++ b/asterix-examples/src/main/resources/tiny-social/data/fbu.adm
@@ -0,0 +1,10 @@
+{"id":1,"alias":"Margarita","name":"MargaritaStoddard","user-since":datetime("2012-08-20T10:10:00"),"friend-ids":{{2,3,6,10}},"employment":[{"organization-name":"Codetechno","start-date":date("2006-08-06")}]}
+{"id":2,"alias":"Isbel","name":"IsbelDull","user-since":datetime("2011-01-22T10:10:00"),"friend-ids":{{1,4}},"employment":[{"organization-name":"Hexviafind","start-date":date("2010-04-27")}]}
+{"id":3,"alias":"Emory","name":"EmoryUnk","user-since":datetime("2012-07-10T10:10:00"),"friend-ids":{{1,5,8,9}},"employment":[{"organization-name":"geomedia","start-date":date("2010-06-17"),"end-date":date("2010-01-26")}]}
+{"id":4,"alias":"Nicholas","name":"NicholasStroh","user-since":datetime("2010-12-27T10:10:00"),"friend-ids":{{2}},"employment":[{"organization-name":"Zamcorporation","start-date":date("2010-06-08")}]}
+{"id":5,"alias":"Von","name":"VonKemble","user-since":datetime("2010-01-05T10:10:00"),"friend-ids":{{3,6,10}},"employment":[{"organization-name":"Kongreen","start-date":date("2010-11-27")}]}
+{"id":6,"alias":"Willis","name":"WillisWynne","user-since":datetime("2005-01-17T10:10:00"),"friend-ids":{{1,3,7}},"employment":[{"organization-name":"jaydax","start-date":date("2009-05-15")}]}
+{"id":7,"alias":"Suzanna","name":"SuzannaTillson","user-since":datetime("2012-08-07T10:10:00"),"friend-ids":{{6}},"employment":[{"organization-name":"Labzatron","start-date":date("2011-04-19")}]}
+{"id":8,"alias":"Nila","name":"NilaMilliron","user-since":datetime("2008-01-01T10:10:00"),"friend-ids":{{3}},"employment":[{"organization-name":"Plexlane","start-date":date("2010-02-28")}]}
+{"id":9,"alias":"Woodrow","name":"WoodrowNehling","user-since":datetime("2005-09-20T10:10:00"),"friend-ids":{{3,10}},"employment":[{"organization-name":"Zuncan","start-date":date("2003-04-22"),"end-date":date("2009-12-13")}]}
+{"id":10,"alias":"Bram","name":"BramHatch","user-since":datetime("2010-10-16T10:10:00"),"friend-ids":{{1,5,9}},"employment":[{"organization-name":"physcane","start-date":date("2007-06-05"),"end-date":date("2011-11-05")}]}
diff --git a/asterix-examples/src/main/resources/tiny-social/data/twm.adm b/asterix-examples/src/main/resources/tiny-social/data/twm.adm
new file mode 100644
index 0000000..fa764af
--- /dev/null
+++ b/asterix-examples/src/main/resources/tiny-social/data/twm.adm
@@ -0,0 +1,12 @@
+{"tweetid":"1","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("47.44,80.65"),"send-time":datetime("2008-04-26T10:10:00"),"referred-topics":{{"t-mobile","customization"}},"message-text":" love t-mobile its customization is good:)"}
+{"tweetid":"2","user":{"screen-name":"ColineGeyer@63","lang":"en","friends_count":121,"statuses_count":362,"name":"Coline Geyer","followers_count":17159},"sender-location":point("32.84,67.14"),"send-time":datetime("2010-05-13T10:10:00"),"referred-topics":{{"verizon","shortcut-menu"}},"message-text":" like verizon its shortcut-menu is awesome:)"}
+{"tweetid":"3","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("29.72,75.8"),"send-time":datetime("2006-11-04T10:10:00"),"referred-topics":{{"motorola","speed"}},"message-text":" like motorola the speed is good:)"}
+{"tweetid":"4","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("39.28,70.48"),"send-time":datetime("2011-12-26T10:10:00"),"referred-topics":{{"sprint","voice-command"}},"message-text":" like sprint the voice-command is mind-blowing:)"}
+{"tweetid":"5","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("40.09,92.69"),"send-time":datetime("2006-08-04T10:10:00"),"referred-topics":{{"motorola","speed"}},"message-text":" can't stand motorola its speed is terrible:("}
+{"tweetid":"6","user":{"screen-name":"ColineGeyer@63","lang":"en","friends_count":121,"statuses_count":362,"name":"Coline Geyer","followers_count":17159},"sender-location":point("47.51,83.99"),"send-time":datetime("2010-05-07T10:10:00"),"referred-topics":{{"iphone","voice-clarity"}},"message-text":" like iphone the voice-clarity is good:)"}
+{"tweetid":"7","user":{"screen-name":"ChangEwing_573","lang":"en","friends_count":182,"statuses_count":394,"name":"Chang Ewing","followers_count":32136},"sender-location":point("36.21,72.6"),"send-time":datetime("2011-08-25T10:10:00"),"referred-topics":{{"samsung","platform"}},"message-text":" like samsung the platform is good"}
+{"tweetid":"8","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("46.05,93.34"),"send-time":datetime("2005-10-14T10:10:00"),"referred-topics":{{"t-mobile","shortcut-menu"}},"message-text":" like t-mobile the shortcut-menu is awesome:)"}
+{"tweetid":"9","user":{"screen-name":"NathanGiesen@211","lang":"en","friends_count":39339,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416},"sender-location":point("36.86,74.62"),"send-time":datetime("2012-07-21T10:10:00"),"referred-topics":{{"verizon","voicemail-service"}},"message-text":" love verizon its voicemail-service is awesome"}
+{"tweetid":"10","user":{"screen-name":"ColineGeyer@63","lang":"en","friends_count":121,"statuses_count":362,"name":"Coline Geyer","followers_count":17159},"sender-location":point("29.15,76.53"),"send-time":datetime("2008-01-26T10:10:00"),"referred-topics":{{"verizon","voice-clarity"}},"message-text":" hate verizon its voice-clarity is OMG:("}
+{"tweetid":"11","user":{"screen-name":"NilaMilliron_tw","lang":"en","friends_count":445,"statuses_count":164,"name":"Nila Milliron","followers_count":22649},"sender-location":point("37.59,68.42"),"send-time":datetime("2008-03-09T10:10:00"),"referred-topics":{{"iphone","platform"}},"message-text":" can't stand iphone its platform is terrible"}
+{"tweetid":"12","user":{"screen-name":"OliJackson_512","lang":"en","friends_count":445,"statuses_count":164,"name":"Oli Jackson","followers_count":22649},"sender-location":point("24.82,94.63"),"send-time":datetime("2010-02-13T10:10:00"),"referred-topics":{{"samsung","voice-command"}},"message-text":" like samsung the voice-command is amazing:)"}
diff --git a/asterix-examples/src/main/resources/tiny-social/data/twu.adm b/asterix-examples/src/main/resources/tiny-social/data/twu.adm
new file mode 100644
index 0000000..32a1917
--- /dev/null
+++ b/asterix-examples/src/main/resources/tiny-social/data/twu.adm
@@ -0,0 +1,4 @@
+{"screen-name":"NathanGiesen@211","lang":"en","friends_count":18,"statuses_count":473,"name":"Nathan Giesen","followers_count":49416}
+{"screen-name":"ColineGeyer@63","lang":"en","friends_count":121,"statuses_count":362,"name":"Coline Geyer","followers_count":17159}
+{"screen-name":"NilaMilliron_tw","lang":"en","friends_count":445,"statuses_count":164,"name":"Nila Milliron","followers_count":22649}
+{"screen-name":"ChangEwing_573","lang":"en","friends_count":182,"statuses_count":394,"name":"Chang Ewing","followers_count":32136}
diff --git a/asterix-external-data/pom.xml b/asterix-external-data/pom.xml
index d534716..842cd67 100644
--- a/asterix-external-data/pom.xml
+++ b/asterix-external-data/pom.xml
@@ -117,6 +117,12 @@
 			<version>1.0.0</version>
 			<type>jar</type>
 			<scope>compile</scope>
+			<exclusions>
+				<exclusion>
+					<artifactId>rome</artifactId>
+					<groupId>net.java.dev.rome</groupId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>rome</groupId>
diff --git a/asterix-installer/.gitignore b/asterix-installer/.gitignore
new file mode 100644
index 0000000..19f2e00
--- /dev/null
+++ b/asterix-installer/.gitignore
@@ -0,0 +1,2 @@
+/target
+/target
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/AlterCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/AlterCommand.java
index 814f3c9..32918a7 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/AlterCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/AlterCommand.java
@@ -30,7 +30,7 @@
 
     @Override
     protected void execCommand() throws Exception {
-        InstallerDriver.initConfig();
+        InstallerDriver.initConfig(true);
         String instanceName = ((AlterConfig) config).name;
         InstallerUtil.validateAsterixInstanceExists(instanceName, State.INACTIVE);
         ILookupService lookupService = ServiceProvider.INSTANCE.getLookupService();
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/BackupCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/BackupCommand.java
index 261de22..a0014f6 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/BackupCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/BackupCommand.java
@@ -35,7 +35,7 @@
 
     @Override
     protected void execCommand() throws Exception {
-        InstallerDriver.initConfig();
+        InstallerDriver.initConfig(true);
         String asterixInstanceName = ((BackupConfig) config).name;
         AsterixInstance instance = InstallerUtil.validateAsterixInstanceExists(asterixInstanceName, State.INACTIVE);
         List<BackupInfo> backupInfo = instance.getBackupInfo();
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/CreateCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/CreateCommand.java
index 01a409e..a99b530 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/CreateCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/CreateCommand.java
@@ -39,7 +39,7 @@
 
     @Override
     protected void execCommand() throws Exception {
-        InstallerDriver.initConfig();
+        InstallerDriver.initConfig(true);
         ValidateCommand validateCommand = new ValidateCommand();
         boolean valid = validateCommand.validateCluster(((CreateConfig) config).clusterPath);
         if (!valid) {
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/DeleteCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/DeleteCommand.java
index 2279d8f..4c2bb09 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/DeleteCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/DeleteCommand.java
@@ -28,7 +28,7 @@
 
     @Override
     protected void execCommand() throws Exception {
-        InstallerDriver.initConfig();
+        InstallerDriver.initConfig(true);
         String asterixInstanceName = ((DeleteConfig) config).name;
         AsterixInstance instance = InstallerUtil.validateAsterixInstanceExists(asterixInstanceName, State.INACTIVE);
         PatternCreator pc = new PatternCreator();
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/DescribeCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/DescribeCommand.java
index 9306a56..66c6e77 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/DescribeCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/DescribeCommand.java
@@ -31,7 +31,7 @@
 
     @Override
     protected void execCommand() throws Exception {
-        InstallerDriver.initConfig();
+        InstallerDriver.initConfig(true);
         String asterixInstanceName = ((DescribeConfig) config).name;
         boolean adminView = ((DescribeConfig) config).admin;
         if (asterixInstanceName != null) {
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/RestoreCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/RestoreCommand.java
index 9ef925a..d4d9de3 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/RestoreCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/RestoreCommand.java
@@ -30,7 +30,7 @@
 
     @Override
     protected void execCommand() throws Exception {
-        InstallerDriver.initConfig();
+        InstallerDriver.initConfig(true);
         String asterixInstanceName = ((RestoreConfig) config).name;
         AsterixInstance instance = InstallerUtil.validateAsterixInstanceExists(asterixInstanceName, State.INACTIVE);
         int backupId = ((RestoreConfig) config).backupId;
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/ShutdownCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/ShutdownCommand.java
index b9dd23d..f38184d 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/ShutdownCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/ShutdownCommand.java
@@ -22,7 +22,7 @@
 
     @Override
     protected void execCommand() throws Exception {
-        InstallerDriver.initConfig();
+        InstallerDriver.initConfig(false);
         ILookupService lookupService = ServiceProvider.INSTANCE.getLookupService();
         lookupService.stopService(InstallerDriver.getConfiguration());
     }
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/StartCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/StartCommand.java
index 1180a4e..9d3cb64 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/StartCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/StartCommand.java
@@ -33,7 +33,7 @@
 
     @Override
     protected void execCommand() throws Exception {
-        InstallerDriver.initConfig();
+        InstallerDriver.initConfig(true);
         String asterixInstanceName = ((StartConfig) config).name;
         AsterixInstance instance = InstallerUtil.validateAsterixInstanceExists(asterixInstanceName, State.INACTIVE);
         InstallerUtil.createAsterixZip(instance);
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/StopCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/StopCommand.java
index dfd8c5e..f78cfbc 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/StopCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/StopCommand.java
@@ -35,7 +35,7 @@
 
     @Override
     protected void execCommand() throws Exception {
-        InstallerDriver.initConfig();
+        InstallerDriver.initConfig(true);
         String asterixInstanceName = ((StopConfig) config).name;
         AsterixInstance asterixInstance = InstallerUtil.validateAsterixInstanceExists(asterixInstanceName,
                 State.ACTIVE, State.UNUSABLE);
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/driver/InstallerDriver.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/driver/InstallerDriver.java
index 08249ee..a9ab53b 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/driver/InstallerDriver.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/driver/InstallerDriver.java
@@ -55,7 +55,7 @@
         return conf;
     }
 
-    public static void initConfig() throws Exception {
+    public static void initConfig(boolean ensureLookupServiceIsRunning) throws Exception {
         File configFile = new File(managixHome + File.separator + MANAGIX_CONF_XML);
         JAXBContext configCtx = JAXBContext.newInstance(Configuration.class);
         Unmarshaller unmarshaller = configCtx.createUnmarshaller();
@@ -63,7 +63,7 @@
         asterixZip = initBinary("asterix-server");
 
         ILookupService lookupService = ServiceProvider.INSTANCE.getLookupService();
-        if (!lookupService.isRunning(conf)) {
+        if (ensureLookupServiceIsRunning && !lookupService.isRunning(conf)) {
             lookupService.startService(conf);
         }
     }
diff --git a/asterix-installer/src/main/resources/conf/asterix-configuration.xml b/asterix-installer/src/main/resources/conf/asterix-configuration.xml
index b6958c5..bfec2db 100644
--- a/asterix-installer/src/main/resources/conf/asterix-configuration.xml
+++ b/asterix-installer/src/main/resources/conf/asterix-configuration.xml
@@ -55,7 +55,7 @@
 
 	<property>
 		<name>storage.memorycomponent.globalbudget</name>
-		<value>1073741824</value>
+		<value>263435456</value>
 		<description>The total size of memory in bytes that the sum of all
 			open memory
 			components cannot exceed. (Default = "1073741824" // 1GB)
diff --git a/asterix-installer/src/test/java/edu/uci/ics/asterix/installer/test/AsterixInstallerIntegrationUtil.java b/asterix-installer/src/test/java/edu/uci/ics/asterix/installer/test/AsterixInstallerIntegrationUtil.java
index dc6f643..c7beb28 100644
--- a/asterix-installer/src/test/java/edu/uci/ics/asterix/installer/test/AsterixInstallerIntegrationUtil.java
+++ b/asterix-installer/src/test/java/edu/uci/ics/asterix/installer/test/AsterixInstallerIntegrationUtil.java
@@ -87,7 +87,7 @@
         cmdHandler.processCommand(command.split(" "));
 
         startZookeeper();
-        InstallerDriver.initConfig();
+        InstallerDriver.initConfig(true);
         createInstance();
         hcc = new HyracksConnection(CC_IP_ADDRESS, DEFAULT_HYRACKS_CC_CLIENT_PORT);
     }
diff --git a/asterix-maven-plugins/lexer-generator-maven-plugin/pom.xml b/asterix-maven-plugins/lexer-generator-maven-plugin/pom.xml
index 6b444e8..6be403e 100644
--- a/asterix-maven-plugins/lexer-generator-maven-plugin/pom.xml
+++ b/asterix-maven-plugins/lexer-generator-maven-plugin/pom.xml
@@ -18,8 +18,8 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>2.0.2</version>
         <configuration>
-          <source>1.6</source>
-          <target>1.6</target>
+          <source>1.7</source>
+          <target>1.7</target>
 	  <fork>true</fork>
         </configuration>
       </plugin>
diff --git a/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/bootstrap/MetadataBootstrap.java b/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/bootstrap/MetadataBootstrap.java
index 791666d..422fdfd 100644
--- a/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/bootstrap/MetadataBootstrap.java
+++ b/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/bootstrap/MetadataBootstrap.java
@@ -73,6 +73,7 @@
 import edu.uci.ics.hyracks.storage.am.common.api.IIndexLifecycleManager;
 import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexMetaDataFrameFactory;
 import edu.uci.ics.hyracks.storage.am.common.frames.LIFOMetaDataFrameFactory;
+import edu.uci.ics.hyracks.storage.am.common.util.IndexFileNameUtil;
 import edu.uci.ics.hyracks.storage.am.lsm.btree.impls.LSMBTree;
 import edu.uci.ics.hyracks.storage.am.lsm.btree.util.LSMBTreeUtils;
 import edu.uci.ics.hyracks.storage.am.lsm.common.api.IInMemoryBufferCache;
@@ -333,7 +334,9 @@
     }
 
     private static void enlistMetadataDataset(IMetadataIndex index, boolean create) throws Exception {
-        String filePath = metadataStore + File.separator + index.getFileNameRelativePath();
+        String filePath = IndexFileNameUtil.prepareFileName(
+                metadataStore + File.separator + index.getFileNameRelativePath(),
+                runtimeContext.getMetaDataIODeviceId());
         FileReference file = new FileReference(new File(filePath));
         IInMemoryBufferCache memBufferCache = new InMemoryBufferCache(new HeapBufferAllocator(), DEFAULT_MEM_PAGE_SIZE,
                 DEFAULT_MEM_NUM_PAGES, new TransientFileMapManager());
@@ -350,7 +353,7 @@
                     fileMapProvider, typeTraits, comparatorFactories, bloomFilterKeyFields,
                     runtimeContext.getBloomFilterFalsePositiveRate(), runtimeContext.getLSMMergePolicy(),
                     runtimeContext.getLSMBTreeOperationTrackerFactory(), runtimeContext.getLSMIOScheduler(),
-                    AsterixRuntimeComponentsProvider.LSMBTREE_PROVIDER);
+                    AsterixRuntimeComponentsProvider.LSMBTREE_PROVIDER, runtimeContext.getMetaDataIODeviceId());
             lsmBtree.create();
             resourceID = runtimeContext.getResourceIdFactory().createId();
             indexLifecycleManager.register(resourceID, lsmBtree);
@@ -358,12 +361,14 @@
             AsterixStorageProperties storageProperties = propertiesProvider.getStorageProperties();
             ILocalResourceMetadata localResourceMetadata = new LSMBTreeLocalResourceMetadata(typeTraits,
                     comparatorFactories, bloomFilterKeyFields, index.isPrimaryIndex(),
-                    storageProperties.getMemoryComponentPageSize(), storageProperties.getMemoryComponentNumPages());
+                    storageProperties.getMemoryComponentPageSize(), storageProperties.getMemoryComponentNumPages(),
+                    runtimeContext.getMetaDataIODeviceId());
             ILocalResourceFactoryProvider localResourceFactoryProvider = new PersistentLocalResourceFactoryProvider(
                     localResourceMetadata, LocalResource.LSMBTreeResource);
             ILocalResourceFactory localResourceFactory = localResourceFactoryProvider.getLocalResourceFactory();
-            localResourceRepository.insert(localResourceFactory.createLocalResource(resourceID, file.getFile()
-                    .getPath(), 0));
+            localResourceRepository.insert(
+                    localResourceFactory.createLocalResource(resourceID, file.getFile().getPath(), 0),
+                    runtimeContext.getMetaDataIODeviceId());
         } else {
             resourceID = localResourceRepository.getResourceByName(file.getFile().getPath()).getResourceId();
             lsmBtree = (LSMBTree) indexLifecycleManager.getIndex(resourceID);
@@ -372,7 +377,7 @@
                         bufferCache, fileMapProvider, typeTraits, comparatorFactories, bloomFilterKeyFields,
                         runtimeContext.getBloomFilterFalsePositiveRate(), runtimeContext.getLSMMergePolicy(),
                         runtimeContext.getLSMBTreeOperationTrackerFactory(), runtimeContext.getLSMIOScheduler(),
-                        AsterixRuntimeComponentsProvider.LSMBTREE_PROVIDER);
+                        AsterixRuntimeComponentsProvider.LSMBTREE_PROVIDER, runtimeContext.getMetaDataIODeviceId());
                 indexLifecycleManager.register(resourceID, lsmBtree);
             }
         }
diff --git a/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/declared/AqlMetadataProvider.java b/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/declared/AqlMetadataProvider.java
index 3128153..117f492 100644
--- a/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/declared/AqlMetadataProvider.java
+++ b/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/declared/AqlMetadataProvider.java
@@ -66,6 +66,7 @@
 import edu.uci.ics.asterix.om.types.ATypeTag;
 import edu.uci.ics.asterix.om.types.IAType;
 import edu.uci.ics.asterix.om.util.AsterixAppContextInfo;
+import edu.uci.ics.asterix.om.util.AsterixClusterProperties;
 import edu.uci.ics.asterix.om.util.NonTaggedFormatUtil;
 import edu.uci.ics.asterix.runtime.base.AsterixTupleFilterFactory;
 import edu.uci.ics.asterix.runtime.formats.FormatUtils;
@@ -418,7 +419,8 @@
                 adapterFactoryClassname = adapterFactoryMapping.get(adapterName);
                 if (adapterFactoryClassname != null) {
                 } else {
-                    // adapterName has been provided as a fully qualified classname 
+                    // adapterName has been provided as a fully qualified
+                    // classname
                     adapterFactoryClassname = adapterName;
                 }
                 adapterFactory = (IAdapterFactory) Class.forName(adapterFactoryClassname).newInstance();
@@ -769,9 +771,11 @@
                 numElementsHint = Long.parseLong(dataset.getHints().get("CARDINALITY"));
             }
 
-            //TODO
-            //figure out the right behavior of the bulkload and then give the right callback
-            //(ex. what's the expected behavior when there is an error during bulkload?)
+            // TODO
+            // figure out the right behavior of the bulkload and then give the
+            // right callback
+            // (ex. what's the expected behavior when there is an error during
+            // bulkload?)
             TreeIndexBulkLoadOperatorDescriptor btreeBulkLoad = new TreeIndexBulkLoadOperatorDescriptor(spec,
                     appContext.getStorageManagerInterface(), appContext.getIndexLifecycleManagerProvider(),
                     splitsAndConstraint.first, typeTraits, comparatorFactories, bloomFilterKeyFields, fieldPermutation,
@@ -830,7 +834,7 @@
             Pair<IFileSplitProvider, AlgebricksPartitionConstraint> splitsAndConstraint = splitProviderAndPartitionConstraintsForInternalOrFeedDataset(
                     dataSource.getId().getDataverseName(), datasetName, indexName);
 
-            //prepare callback
+            // prepare callback
             JobId jobId = ((JobEventListenerFactory) spec.getJobletEventListenerFactory()).getJobId();
             int datasetId = dataset.getDatasetId();
             int[] primaryKeyFields = new int[numKeys];
@@ -1023,7 +1027,7 @@
             Pair<IFileSplitProvider, AlgebricksPartitionConstraint> splitsAndConstraint = splitProviderAndPartitionConstraintsForInternalOrFeedDataset(
                     dataverseName, datasetName, indexName);
 
-            //prepare callback
+            // prepare callback
             JobId jobId = ((JobEventListenerFactory) spec.getJobletEventListenerFactory()).getJobId();
             int datasetId = dataset.getDatasetId();
             int[] primaryKeyFields = new int[primaryKeys.size()];
@@ -1138,7 +1142,8 @@
             tokenComparatorFactories[0] = NonTaggedFormatUtil.getTokenBinaryComparatorFactory(secondaryKeyType);
             tokenTypeTraits[0] = NonTaggedFormatUtil.getTokenTypeTrait(secondaryKeyType);
             if (isPartitioned) {
-                // The partitioning field is hardcoded to be a short *without* an Asterix type tag.
+                // The partitioning field is hardcoded to be a short *without*
+                // an Asterix type tag.
                 tokenComparatorFactories[1] = PointableBinaryComparatorFactory.of(ShortPointable.FACTORY);
                 tokenTypeTraits[1] = ShortPointable.TYPE_TRAITS;
             }
@@ -1149,7 +1154,7 @@
             Pair<IFileSplitProvider, AlgebricksPartitionConstraint> splitsAndConstraint = splitProviderAndPartitionConstraintsForInternalOrFeedDataset(
                     dataverseName, datasetName, indexName);
 
-            //prepare callback
+            // prepare callback
             JobId jobId = ((JobEventListenerFactory) spec.getJobletEventListenerFactory()).getJobId();
             int datasetId = dataset.getDatasetId();
             int[] primaryKeyFields = new int[primaryKeys.size()];
@@ -1244,7 +1249,7 @@
             Pair<IFileSplitProvider, AlgebricksPartitionConstraint> splitsAndConstraint = splitProviderAndPartitionConstraintsForInternalOrFeedDataset(
                     dataverseName, datasetName, indexName);
 
-            //prepare callback
+            // prepare callback
             JobId jobId = ((JobEventListenerFactory) spec.getJobletEventListenerFactory()).getJobId();
             int datasetId = dataset.getDatasetId();
             int[] primaryKeyFields = new int[numPrimaryKeys];
@@ -1338,8 +1343,13 @@
                 continue;
             }
             for (int i = 0; i < nodeStores.length; i++) {
-                File f = new File(nodeStores[i] + File.separator + relPathFile);
-                splits.add(new FileSplit(node, new FileReference(f)));
+                int numIODevices = AsterixClusterProperties.INSTANCE.getNumberOfIODevices(node);
+                for (int j = 0; j < nodeStores.length; j++) {
+                    for (int k = 0; k < numIODevices; k++) {
+                        File f = new File(nodeStores[j] + File.separator + relPathFile);
+                        splits.add(new FileSplit(node, new FileReference(f), k));
+                    }
+                }
             }
         }
         return splits.toArray(new FileSplit[] {});
@@ -1368,9 +1378,17 @@
                     LOGGER.warning("Node " + nd + " has no stores.");
                     throw new AlgebricksException("Node " + nd + " has no stores.");
                 } else {
+                    int numIODevices;
+                    if (datasetDetails.getNodeGroupName().compareTo(MetadataConstants.METADATA_NODEGROUP_NAME) == 0) {
+                        numIODevices = 1;
+                    } else {
+                        numIODevices = AsterixClusterProperties.INSTANCE.getNumberOfIODevices(nd);
+                    }
                     for (int j = 0; j < nodeStores.length; j++) {
-                        File f = new File(nodeStores[j] + File.separator + relPathFile);
-                        splitArray.add(new FileSplit(nd, new FileReference(f)));
+                        for (int k = 0; k < numIODevices; k++) {
+                            File f = new File(nodeStores[j] + File.separator + relPathFile);
+                            splitArray.add(new FileSplit(nd, new FileReference(f), k));
+                        }
                     }
                 }
             }
@@ -1417,21 +1435,6 @@
         return dataverseName + File.separator + fileName;
     }
 
-    public Pair<IFileSplitProvider, IFileSplitProvider> getInvertedIndexFileSplitProviders(
-            IFileSplitProvider splitProvider) {
-        int numSplits = splitProvider.getFileSplits().length;
-        FileSplit[] btreeSplits = new FileSplit[numSplits];
-        FileSplit[] invListsSplits = new FileSplit[numSplits];
-        for (int i = 0; i < numSplits; i++) {
-            String nodeName = splitProvider.getFileSplits()[i].getNodeName();
-            String path = splitProvider.getFileSplits()[i].getLocalFile().getFile().getPath();
-            btreeSplits[i] = new FileSplit(nodeName, path + "_$btree");
-            invListsSplits[i] = new FileSplit(nodeName, path + "_$invlists");
-        }
-        return new Pair<IFileSplitProvider, IFileSplitProvider>(new ConstantFileSplitProvider(btreeSplits),
-                new ConstantFileSplitProvider(invListsSplits));
-    }
-
     public Dataset findDataset(String dataverse, String dataset) throws AlgebricksException {
         try {
             return MetadataManager.INSTANCE.getDataset(mdTxnCtx, dataverse, dataset);
@@ -1463,10 +1466,13 @@
 
     public AlgebricksPartitionConstraint getClusterLocations() {
         ArrayList<String> locs = new ArrayList<String>();
-        for (String k : stores.keySet()) {
-            String[] nodeStores = stores.get(k);
+        for (String i : stores.keySet()) {
+            String[] nodeStores = stores.get(i);
+            int numIODevices = AsterixClusterProperties.INSTANCE.getNumberOfIODevices(i);
             for (int j = 0; j < nodeStores.length; j++) {
-                locs.add(k);
+                for (int k = 0; k < numIODevices; k++) {
+                    locs.add(i);
+                }
             }
         }
         String[] cluster = new String[locs.size()];
diff --git a/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/functions/MetadataBuiltinFunctions.java b/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/functions/MetadataBuiltinFunctions.java
index 60f2e6d..406b835 100644
--- a/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/functions/MetadataBuiltinFunctions.java
+++ b/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/functions/MetadataBuiltinFunctions.java
@@ -30,7 +30,7 @@
 
     public static void addMetadataBuiltinFunctions() {
 
-        AsterixBuiltinFunctions.add(AsterixBuiltinFunctions.DATASET, new IResultTypeComputer() {
+        AsterixBuiltinFunctions.addFunction(AsterixBuiltinFunctions.DATASET, new IResultTypeComputer() {
 
             @Override
             public IAType computeType(ILogicalExpression expression, IVariableTypeEnvironment env,
@@ -73,7 +73,7 @@
             }
         });
 
-        AsterixBuiltinFunctions.add(AsterixBuiltinFunctions.FEED_INGEST, new IResultTypeComputer() {
+        AsterixBuiltinFunctions.addPrivateFunction(AsterixBuiltinFunctions.FEED_INGEST, new IResultTypeComputer() {
 
             @Override
             public IAType computeType(ILogicalExpression expression, IVariableTypeEnvironment env,
diff --git a/asterix-om/.gitignore b/asterix-om/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/asterix-om/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/comparators/AObjectAscBinaryComparatorFactory.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/comparators/AObjectAscBinaryComparatorFactory.java
index f795b17..a6ac8f2 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/comparators/AObjectAscBinaryComparatorFactory.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/comparators/AObjectAscBinaryComparatorFactory.java
@@ -51,7 +51,7 @@
 
             @Override
             public int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) {
-
+            	
                 if (b1[s1] == ATypeTag.NULL.serialize()) {
                     if (b2[s2] == ATypeTag.NULL.serialize())
                         return 0;
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/comparators/ListItemBinaryComparatorFactory.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/comparators/ListItemBinaryComparatorFactory.java
new file mode 100644
index 0000000..6e80fe6
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/comparators/ListItemBinaryComparatorFactory.java
@@ -0,0 +1,165 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package edu.uci.ics.asterix.dataflow.data.nontagged.comparators;
+
+import edu.uci.ics.asterix.formats.nontagged.UTF8StringLowercasePointable;
+import edu.uci.ics.asterix.om.types.ATypeTag;
+import edu.uci.ics.asterix.om.types.EnumDeserializer;
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparator;
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
+import edu.uci.ics.hyracks.data.std.accessors.PointableBinaryComparatorFactory;
+import edu.uci.ics.hyracks.data.std.primitive.DoublePointable;
+import edu.uci.ics.hyracks.data.std.primitive.FloatPointable;
+import edu.uci.ics.hyracks.data.std.primitive.IntegerPointable;
+import edu.uci.ics.hyracks.data.std.primitive.UTF8StringPointable;
+
+public class ListItemBinaryComparatorFactory implements IBinaryComparatorFactory {
+
+    private static final long serialVersionUID = 1L;
+
+    public static final ListItemBinaryComparatorFactory INSTANCE = new ListItemBinaryComparatorFactory();
+
+    private ListItemBinaryComparatorFactory() {
+    }
+
+    @Override
+    public IBinaryComparator createBinaryComparator() {
+        return createBinaryComparator(ATypeTag.NULL, ATypeTag.NULL, false);
+    }
+
+    public IBinaryComparator createBinaryComparator(final ATypeTag firstItemTypeTag, final ATypeTag secondItemTypeTag,
+            final boolean ignoreCase) {
+        return new IBinaryComparator() {
+            final IBinaryComparator ascBoolComp = BooleanBinaryComparatorFactory.INSTANCE.createBinaryComparator();
+            final IBinaryComparator ascIntComp = new PointableBinaryComparatorFactory(IntegerPointable.FACTORY)
+                    .createBinaryComparator();
+            final IBinaryComparator ascLongComp = LongBinaryComparatorFactory.INSTANCE.createBinaryComparator();
+            final IBinaryComparator ascStrComp = new PointableBinaryComparatorFactory(UTF8StringPointable.FACTORY)
+                    .createBinaryComparator();
+            final IBinaryComparator ascLowerCaseStrComp = new PointableBinaryComparatorFactory(
+                    UTF8StringLowercasePointable.FACTORY).createBinaryComparator();
+            final IBinaryComparator ascFloatComp = new PointableBinaryComparatorFactory(FloatPointable.FACTORY)
+                    .createBinaryComparator();
+            final IBinaryComparator ascDoubleComp = new PointableBinaryComparatorFactory(DoublePointable.FACTORY)
+                    .createBinaryComparator();
+            final IBinaryComparator ascRectangleComp = ARectanglePartialBinaryComparatorFactory.INSTANCE
+                    .createBinaryComparator();
+            final IBinaryComparator ascCircleComp = ACirclePartialBinaryComparatorFactory.INSTANCE
+                    .createBinaryComparator();
+            final IBinaryComparator ascDurationComp = ADurationPartialBinaryComparatorFactory.INSTANCE
+                    .createBinaryComparator();
+            final IBinaryComparator ascIntervalComp = AIntervalPartialBinaryComparatorFactory.INSTANCE
+                    .createBinaryComparator();
+            final IBinaryComparator ascLineComp = ALinePartialBinaryComparatorFactory.INSTANCE.createBinaryComparator();
+            final IBinaryComparator ascPointComp = APointPartialBinaryComparatorFactory.INSTANCE
+                    .createBinaryComparator();
+            final IBinaryComparator ascPoint3DComp = APoint3DPartialBinaryComparatorFactory.INSTANCE
+                    .createBinaryComparator();
+            final IBinaryComparator ascPolygonComp = APolygonPartialBinaryComparatorFactory.INSTANCE
+                    .createBinaryComparator();
+            final IBinaryComparator rawComp = RawBinaryComparatorFactory.INSTANCE.createBinaryComparator();
+
+            @Override
+            public int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) {
+
+                if (b1[s1] == ATypeTag.NULL.serialize()) {
+                    if (b2[s2] == ATypeTag.NULL.serialize())
+                        return 0;
+                    else
+                        return -1;
+                } else {
+                    if (b2[s2] == ATypeTag.NULL.serialize())
+                        return 1;
+                }
+
+                ATypeTag tag1 = firstItemTypeTag;
+                int skip1 = 0;
+                if (firstItemTypeTag == ATypeTag.ANY) {
+                    tag1 = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(b1[s1]);
+                    skip1 = 1;
+                }
+
+                ATypeTag tag2 = secondItemTypeTag;
+                int skip2 = 0;
+                if (secondItemTypeTag == ATypeTag.ANY) {
+                    tag2 = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(b2[s2]);
+                    skip2 = 1;
+                }
+
+                if (tag1 != tag2) {
+                    return rawComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                }
+
+                switch (tag1) {
+                    case BOOLEAN: {
+                        return ascBoolComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case TIME:
+                    case DATE:
+                    case YEARMONTHDURATION:
+                    case INT32: {
+                        return ascIntComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case DATETIME:
+                    case DAYTIMEDURATION:
+                    case INT64: {
+                        return ascLongComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case FLOAT: {
+                        return ascFloatComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case DOUBLE: {
+                        return ascDoubleComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case STRING: {
+                        if (ignoreCase) {
+                            return ascLowerCaseStrComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                        } else {
+                            return ascStrComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                        }
+                    }
+                    case RECTANGLE: {
+                        return ascRectangleComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case CIRCLE: {
+                        return ascCircleComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case POINT: {
+                        return ascPointComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case POINT3D: {
+                        return ascPoint3DComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case LINE: {
+                        return ascLineComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case POLYGON: {
+                        return ascPolygonComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case DURATION: {
+                        return ascDurationComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    case INTERVAL: {
+                        return ascIntervalComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                    default: {
+                        return rawComp.compare(b1, s1 + skip1, l1 - skip1, b2, s2 + skip2, l2 - skip2);
+                    }
+                }
+            }
+        };
+    }
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/hash/ListItemBinaryHashFunctionFactory.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/hash/ListItemBinaryHashFunctionFactory.java
new file mode 100644
index 0000000..0fab7de
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/hash/ListItemBinaryHashFunctionFactory.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package edu.uci.ics.asterix.dataflow.data.nontagged.hash;
+
+import java.io.IOException;
+
+import edu.uci.ics.asterix.formats.nontagged.UTF8StringLowercasePointable;
+import edu.uci.ics.asterix.om.types.ATypeTag;
+import edu.uci.ics.asterix.om.types.EnumDeserializer;
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryHashFunction;
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryHashFunctionFactory;
+import edu.uci.ics.hyracks.data.std.accessors.MurmurHash3BinaryHashFunctionFamily;
+import edu.uci.ics.hyracks.data.std.accessors.PointableBinaryHashFunctionFactory;
+import edu.uci.ics.hyracks.data.std.util.GrowableArray;
+
+/**
+ * This hash function factory is introduced to be able to hash heterogeneous list items.
+ * The item type tag is also included in the hash computation to distinguish the different
+ * types with the same raw bytes.
+ */
+public class ListItemBinaryHashFunctionFactory implements IBinaryHashFunctionFactory {
+
+    private static final long serialVersionUID = 1L;
+
+    public static final ListItemBinaryHashFunctionFactory INSTANCE = new ListItemBinaryHashFunctionFactory();
+
+    private ListItemBinaryHashFunctionFactory() {
+    }
+
+    @Override
+    public IBinaryHashFunction createBinaryHashFunction() {
+        return createBinaryHashFunction(ATypeTag.ANY, false);
+    }
+
+    public IBinaryHashFunction createBinaryHashFunction(final ATypeTag itemTypeTag, final boolean ignoreCase) {
+        return new IBinaryHashFunction() {
+
+            private IBinaryHashFunction lowerCaseStringHash = new PointableBinaryHashFunctionFactory(
+                    UTF8StringLowercasePointable.FACTORY).createBinaryHashFunction();
+            private IBinaryHashFunction genericBinaryHash = MurmurHash3BinaryHashFunctionFamily.INSTANCE
+                    .createBinaryHashFunction(0);
+            private GrowableArray taggedBytes = new GrowableArray();
+
+            @Override
+            public int hash(byte[] bytes, int offset, int length) {
+                ATypeTag tag = itemTypeTag;
+                int skip = 0;
+                if (itemTypeTag == ATypeTag.ANY) {
+                    tag = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(bytes[offset]);
+                    skip = 1;
+                }
+                switch (tag) {
+                    case STRING: {
+                        if (ignoreCase) {
+                            return lowerCaseStringHash.hash(bytes, offset + skip, length - skip);
+                        }
+                    }
+                    default: {
+                        if (itemTypeTag != ATypeTag.ANY) {
+                            // add the itemTypeTag in front of the data
+                            try {
+                                resetTaggedBytes(bytes, offset, length);
+                                return genericBinaryHash.hash(taggedBytes.getByteArray(), 0, length + 1);
+                            } catch (IOException e) {
+                                throw new RuntimeException(e);
+                            }
+                        } else {
+                            return genericBinaryHash.hash(bytes, offset, length);
+                        }
+                    }
+                }
+            }
+
+            private void resetTaggedBytes(byte[] data, int offset, int length) throws IOException {
+                taggedBytes.reset();
+                taggedBytes.getDataOutput().writeByte(itemTypeTag.serialize());
+                taggedBytes.getDataOutput().write(data, offset, length);
+            }
+        };
+    }
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADatePrinter.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADatePrinter.java
index 327faf1..b7df6ff 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADatePrinter.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADatePrinter.java
@@ -1,9 +1,11 @@
 package edu.uci.ics.asterix.dataflow.data.nontagged.printers;
 
+import java.io.IOException;
 import java.io.PrintStream;
 
 import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AInt32SerializerDeserializer;
 import edu.uci.ics.asterix.om.base.temporal.GregorianCalendarSystem;
+import edu.uci.ics.asterix.om.base.temporal.GregorianCalendarSystem.Fields;
 import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
 import edu.uci.ics.hyracks.algebricks.data.IPrinter;
 
@@ -22,22 +24,22 @@
     public void print(byte[] b, int s, int l, PrintStream ps) throws AlgebricksException {
         long chrononTime = AInt32SerializerDeserializer.getInt(b, s + 1) * CHRONON_OF_DAY;
 
-        int year = gCalInstance.getYear(chrononTime);
-        int month = gCalInstance.getMonthOfYear(chrononTime, year);
-
         ps.print("date(\"");
-        ps.append(String.format(year < 0 ? "%05d" : "%04d", year)).append("-").append(String.format("%02d", month))
-                .append("-").append(String.format("%02d", gCalInstance.getDayOfMonthYear(chrononTime, year, month)));
+        try {
+            gCalInstance.getExtendStringRepUntilField(chrononTime, 0, ps, Fields.YEAR, Fields.DAY, false);
+        } catch (IOException e) {
+            throw new AlgebricksException(e);
+        }
         ps.print("\")");
     }
 
     public void printString(byte[] b, int s, int l, PrintStream ps) throws AlgebricksException {
         long chrononTime = AInt32SerializerDeserializer.getInt(b, s + 1) * CHRONON_OF_DAY;
 
-        int year = gCalInstance.getYear(chrononTime);
-        int month = gCalInstance.getMonthOfYear(chrononTime, year);
-
-        ps.append(String.format(year < 0 ? "%05d" : "%04d", year)).append("-").append(String.format("%02d", month))
-                .append("-").append(String.format("%02d", gCalInstance.getDayOfMonthYear(chrononTime, year, month)));
+        try {
+            gCalInstance.getExtendStringRepUntilField(chrononTime, 0, ps, Fields.YEAR, Fields.DAY, false);
+        } catch (IOException e) {
+            throw new AlgebricksException(e);
+        }
     }
 }
\ No newline at end of file
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADateTimePrinter.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADateTimePrinter.java
index 7cf1478..a412cb1 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADateTimePrinter.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADateTimePrinter.java
@@ -1,9 +1,11 @@
 package edu.uci.ics.asterix.dataflow.data.nontagged.printers;
 
+import java.io.IOException;
 import java.io.PrintStream;
 
 import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AInt64SerializerDeserializer;
 import edu.uci.ics.asterix.om.base.temporal.GregorianCalendarSystem;
+import edu.uci.ics.asterix.om.base.temporal.GregorianCalendarSystem.Fields;
 import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
 import edu.uci.ics.hyracks.algebricks.data.IPrinter;
 
@@ -21,30 +23,25 @@
     public void print(byte[] b, int s, int l, PrintStream ps) throws AlgebricksException {
         long chrononTime = AInt64SerializerDeserializer.getLong(b, s + 1);
 
-        int year = gCalInstance.getYear(chrononTime);
-        int month = gCalInstance.getMonthOfYear(chrononTime, year);
-
         ps.print("datetime(\"");
-        ps.append(String.format(year < 0 ? "%05d" : "%04d", year)).append("-").append(String.format("%02d", month))
-                .append("-").append(String.format("%02d", gCalInstance.getDayOfMonthYear(chrononTime, year, month)))
-                .append("T").append(String.format("%02d", gCalInstance.getHourOfDay(chrononTime))).append(":")
-                .append(String.format("%02d", gCalInstance.getMinOfHour(chrononTime))).append(":")
-                .append(String.format("%02d", gCalInstance.getSecOfMin(chrononTime))).append(".")
-                .append(String.format("%03d", gCalInstance.getMillisOfSec(chrononTime))).append("Z");
+
+        try {
+            gCalInstance.getExtendStringRepUntilField(chrononTime, 0, ps, Fields.YEAR, Fields.MILLISECOND, true);
+        } catch (IOException e) {
+            throw new AlgebricksException(e);
+        }
+
         ps.print("\")");
     }
 
     public void printString(byte[] b, int s, int l, PrintStream ps) throws AlgebricksException {
         long chrononTime = AInt64SerializerDeserializer.getLong(b, s + 1);
 
-        int year = gCalInstance.getYear(chrononTime);
-        int month = gCalInstance.getMonthOfYear(chrononTime, year);
-
-        ps.append(String.format(year < 0 ? "%05d" : "%04d", year)).append("-").append(String.format("%02d", month))
-                .append("-").append(String.format("%02d", gCalInstance.getDayOfMonthYear(chrononTime, year, month)))
-                .append("T").append(String.format("%02d", gCalInstance.getHourOfDay(chrononTime))).append(":")
-                .append(String.format("%02d", gCalInstance.getMinOfHour(chrononTime))).append(":")
-                .append(String.format("%02d", gCalInstance.getSecOfMin(chrononTime))).append(".")
-                .append(String.format("%03d", gCalInstance.getMillisOfSec(chrononTime))).append("Z");
+        try {
+            gCalInstance.getExtendStringRepUntilField(chrononTime, 0, ps, Fields.YEAR, Fields.MILLISECOND, true);
+        } catch (IOException e) {
+            throw new AlgebricksException(e);
+        }
+        
     }
 }
\ No newline at end of file
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ATimePrinter.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ATimePrinter.java
index aba6a4b..6550906 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ATimePrinter.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ATimePrinter.java
@@ -1,9 +1,11 @@
 package edu.uci.ics.asterix.dataflow.data.nontagged.printers;
 
+import java.io.IOException;
 import java.io.PrintStream;
 
 import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AInt32SerializerDeserializer;
 import edu.uci.ics.asterix.om.base.temporal.GregorianCalendarSystem;
+import edu.uci.ics.asterix.om.base.temporal.GregorianCalendarSystem.Fields;
 import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
 import edu.uci.ics.hyracks.algebricks.data.IPrinter;
 
@@ -22,21 +24,24 @@
         int time = AInt32SerializerDeserializer.getInt(b, s + 1);
 
         ps.print("time(\"");
-        ps.append(String.format("%02d", gCalInstance.getHourOfDay(time))).append(":")
-                .append(String.format("%02d", gCalInstance.getMinOfHour(time))).append(":")
-                .append(String.format("%02d", gCalInstance.getSecOfMin(time))).append(".")
-                .append(String.format("%03d", gCalInstance.getMillisOfSec(time))).append("Z");
+
+        try {
+            gCalInstance.getExtendStringRepUntilField(time, 0, ps, Fields.HOUR, Fields.MILLISECOND, true);
+        } catch (IOException e) {
+            throw new AlgebricksException(e);
+        }
 
         ps.print("\")");
     }
-    
+
     public void printString(byte[] b, int s, int l, PrintStream ps) throws AlgebricksException {
         int time = AInt32SerializerDeserializer.getInt(b, s + 1);
 
-        ps.append(String.format("%02d", gCalInstance.getHourOfDay(time))).append(":")
-                .append(String.format("%02d", gCalInstance.getMinOfHour(time))).append(":")
-                .append(String.format("%02d", gCalInstance.getSecOfMin(time))).append(".")
-                .append(String.format("%03d", gCalInstance.getMillisOfSec(time))).append("Z");
+        try {
+            gCalInstance.getExtendStringRepUntilField(time, 0, ps, Fields.HOUR, Fields.MILLISECOND, true);
+        } catch (IOException e) {
+            throw new AlgebricksException(e);
+        }
     }
 
 }
\ No newline at end of file
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/formats/base/IDataFormat.java b/asterix-om/src/main/java/edu/uci/ics/asterix/formats/base/IDataFormat.java
index 11f65dc..51e0413 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/formats/base/IDataFormat.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/formats/base/IDataFormat.java
@@ -22,6 +22,7 @@
 import edu.uci.ics.hyracks.algebricks.data.ITypeTraitProvider;
 import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
 import edu.uci.ics.hyracks.api.dataflow.value.INullWriterFactory;
+import edu.uci.ics.hyracks.api.dataflow.value.IPredicateEvaluatorFactoryProvider;
 import edu.uci.ics.hyracks.dataflow.std.file.ITupleParserFactory;
 
 public interface IDataFormat {
@@ -68,4 +69,6 @@
     public INormalizedKeyComputerFactoryProvider getNormalizedKeyComputerFactoryProvider();
 
     public IBinaryHashFunctionFamilyProvider getBinaryHashFunctionFamilyProvider();
+    
+    public IPredicateEvaluatorFactoryProvider getPredicateEvaluatorFactoryProvider();
 }
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/formats/nontagged/AqlPredicateEvaluatorFactoryProvider.java b/asterix-om/src/main/java/edu/uci/ics/asterix/formats/nontagged/AqlPredicateEvaluatorFactoryProvider.java
new file mode 100644
index 0000000..f4fa74e
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/formats/nontagged/AqlPredicateEvaluatorFactoryProvider.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package edu.uci.ics.asterix.formats.nontagged;
+
+import edu.uci.ics.asterix.om.types.ATypeTag;
+import edu.uci.ics.asterix.om.types.EnumDeserializer;
+import edu.uci.ics.hyracks.api.comm.IFrameTupleAccessor;
+import edu.uci.ics.hyracks.api.dataflow.value.IPredicateEvaluator;
+import edu.uci.ics.hyracks.api.dataflow.value.IPredicateEvaluatorFactory;
+import edu.uci.ics.hyracks.api.dataflow.value.IPredicateEvaluatorFactoryProvider;
+
+/*
+Provides PredicateEvaluator for equi-join cases to properly take care of NULL fields, being compared with each other.
+If any of the join keys, from either side, is NULL, record should not pass equi-join condition.
+*/
+public class AqlPredicateEvaluatorFactoryProvider implements IPredicateEvaluatorFactoryProvider{
+	
+	private static final long serialVersionUID = 1L;
+	public static final AqlPredicateEvaluatorFactoryProvider INSTANCE = new AqlPredicateEvaluatorFactoryProvider();
+	
+	@Override
+	public IPredicateEvaluatorFactory getPredicateEvaluatorFactory(final int[] keys0, final int[] keys1) {
+		
+		return new IPredicateEvaluatorFactory() {
+			private static final long serialVersionUID = 1L;
+			@Override
+			public IPredicateEvaluator createPredicateEvaluator() {
+				return new IPredicateEvaluator() {
+					
+					@Override
+					public boolean evaluate(IFrameTupleAccessor fta0, int tupId0,
+							IFrameTupleAccessor fta1, int tupId1) {
+						
+						int tStart0 = fta0.getTupleStartOffset(tupId0);
+				        int fStartOffset0 = fta0.getFieldSlotsLength() + tStart0;
+						
+						for(int k0 : keys0){
+							int fieldStartIx = fta0.getFieldStartOffset(tupId0, k0);
+							ATypeTag typeTag = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(fta0.getBuffer().array()[fieldStartIx + fStartOffset0]);
+							if(typeTag == ATypeTag.NULL){
+								return false;
+							}
+						}
+						
+						int tStart1 = fta1.getTupleStartOffset(tupId1);
+				        int fStartOffset1 = fta1.getFieldSlotsLength() + tStart1;
+				        
+						for(int k1 : keys1){
+							int fieldStartIx = fta1.getFieldStartOffset(tupId1, k1);
+							ATypeTag typeTag = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(fta1.getBuffer().array()[fieldStartIx + fStartOffset1]);
+							if(typeTag == ATypeTag.NULL){
+								return false;
+							}
+						}
+						
+						return true;	//none of the fields (from both sides) is NULL
+					}
+				};
+			}
+		};
+	}
+
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ADate.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ADate.java
index 0ef170e..28008b2 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ADate.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ADate.java
@@ -14,6 +14,8 @@
  */
 package edu.uci.ics.asterix.om.base;
 
+import java.io.IOException;
+
 import org.json.JSONException;
 import org.json.JSONObject;
 
@@ -75,9 +77,12 @@
     public String toString() {
         StringBuilder sbder = new StringBuilder();
         sbder.append("ADate: { ");
-        GregorianCalendarSystem.getInstance().getExtendStringRepWithTimezoneUntilField(
-                chrononTimeInDay * CHRONON_OF_DAY, 0, sbder, GregorianCalendarSystem.Fields.YEAR,
-                GregorianCalendarSystem.Fields.DAY);
+        try {
+            GregorianCalendarSystem.getInstance().getExtendStringRepUntilField(chrononTimeInDay * CHRONON_OF_DAY, 0,
+                    sbder, GregorianCalendarSystem.Fields.YEAR, GregorianCalendarSystem.Fields.DAY, false);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
         sbder.append(" }");
         return sbder.toString();
     }
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ADateTime.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ADateTime.java
index 081fa63..10d49aa 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ADateTime.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ADateTime.java
@@ -14,6 +14,8 @@
  */
 package edu.uci.ics.asterix.om.base;
 
+import java.io.IOException;
+
 import org.json.JSONException;
 import org.json.JSONObject;
 
@@ -106,8 +108,12 @@
     public String toString() {
         StringBuilder sbder = new StringBuilder();
         sbder.append("ADateTime: { ");
-        GregorianCalendarSystem.getInstance().getExtendStringRepWithTimezoneUntilField(chrononTime, 0, sbder,
-                GregorianCalendarSystem.Fields.YEAR, GregorianCalendarSystem.Fields.MILLISECOND);
+        try {
+            GregorianCalendarSystem.getInstance().getExtendStringRepUntilField(chrononTime, 0, sbder,
+                    GregorianCalendarSystem.Fields.YEAR, GregorianCalendarSystem.Fields.MILLISECOND, true);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
         sbder.append(" }");
         return sbder.toString();
     }
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/AInterval.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/AInterval.java
index f1352f1..e3c5213 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/AInterval.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/AInterval.java
@@ -14,6 +14,8 @@
  */
 package edu.uci.ics.asterix.om.base;
 
+import java.io.IOException;
+
 import org.json.JSONException;
 import org.json.JSONObject;
 
@@ -100,33 +102,38 @@
     public String toString() {
         StringBuilder sbder = new StringBuilder();
         sbder.append("AInterval: { ");
-        if (typetag == ATypeTag.DATE.serialize()) {
-            sbder.append("ADate: { ");
-            GregorianCalendarSystem.getInstance().getExtendStringRepWithTimezoneUntilField(
-                    intervalStart * ADate.CHRONON_OF_DAY, 0, sbder, GregorianCalendarSystem.Fields.YEAR,
-                    GregorianCalendarSystem.Fields.DAY);
-            sbder.append(" }, ADate: {");
-            GregorianCalendarSystem.getInstance().getExtendStringRepWithTimezoneUntilField(
-                    intervalEnd * ADate.CHRONON_OF_DAY, 0, sbder, GregorianCalendarSystem.Fields.YEAR,
-                    GregorianCalendarSystem.Fields.DAY);
-            sbder.append(" }");
-        } else if (typetag == ATypeTag.TIME.serialize()) {
-            sbder.append("ATime: { ");
-            GregorianCalendarSystem.getInstance().getExtendStringRepWithTimezoneUntilField(intervalStart, 0, sbder,
-                    GregorianCalendarSystem.Fields.HOUR, GregorianCalendarSystem.Fields.MILLISECOND);
-            sbder.append(" }, ATime: { ");
+        try {
+            if (typetag == ATypeTag.DATE.serialize()) {
+                sbder.append("ADate: { ");
 
-            GregorianCalendarSystem.getInstance().getExtendStringRepWithTimezoneUntilField(intervalEnd, 0, sbder,
-                    GregorianCalendarSystem.Fields.HOUR, GregorianCalendarSystem.Fields.MILLISECOND);
-            sbder.append(" }");
-        } else if (typetag == ATypeTag.DATETIME.serialize()) {
-            sbder.append("ADateTime: { ");
-            GregorianCalendarSystem.getInstance().getExtendStringRepWithTimezoneUntilField(intervalStart, 0, sbder,
-                    GregorianCalendarSystem.Fields.YEAR, GregorianCalendarSystem.Fields.MILLISECOND);
-            sbder.append(" }, ADateTime: { ");
-            GregorianCalendarSystem.getInstance().getExtendStringRepWithTimezoneUntilField(intervalEnd, 0, sbder,
-                    GregorianCalendarSystem.Fields.YEAR, GregorianCalendarSystem.Fields.MILLISECOND);
-            sbder.append(" }");
+                GregorianCalendarSystem.getInstance().getExtendStringRepUntilField(
+                        intervalStart * ADate.CHRONON_OF_DAY, 0, sbder, GregorianCalendarSystem.Fields.YEAR,
+                        GregorianCalendarSystem.Fields.DAY, false);
+
+                sbder.append(" }, ADate: {");
+                GregorianCalendarSystem.getInstance().getExtendStringRepUntilField(intervalEnd * ADate.CHRONON_OF_DAY,
+                        0, sbder, GregorianCalendarSystem.Fields.YEAR, GregorianCalendarSystem.Fields.DAY, false);
+                sbder.append(" }");
+            } else if (typetag == ATypeTag.TIME.serialize()) {
+                sbder.append("ATime: { ");
+                GregorianCalendarSystem.getInstance().getExtendStringRepUntilField(intervalStart, 0, sbder,
+                        GregorianCalendarSystem.Fields.HOUR, GregorianCalendarSystem.Fields.MILLISECOND, true);
+                sbder.append(" }, ATime: { ");
+
+                GregorianCalendarSystem.getInstance().getExtendStringRepUntilField(intervalEnd, 0, sbder,
+                        GregorianCalendarSystem.Fields.HOUR, GregorianCalendarSystem.Fields.MILLISECOND, true);
+                sbder.append(" }");
+            } else if (typetag == ATypeTag.DATETIME.serialize()) {
+                sbder.append("ADateTime: { ");
+                GregorianCalendarSystem.getInstance().getExtendStringRepUntilField(intervalStart, 0, sbder,
+                        GregorianCalendarSystem.Fields.YEAR, GregorianCalendarSystem.Fields.MILLISECOND, true);
+                sbder.append(" }, ADateTime: { ");
+                GregorianCalendarSystem.getInstance().getExtendStringRepUntilField(intervalEnd, 0, sbder,
+                        GregorianCalendarSystem.Fields.YEAR, GregorianCalendarSystem.Fields.MILLISECOND, true);
+                sbder.append(" }");
+            }
+        } catch (IOException e) {
+            throw new RuntimeException(e);
         }
         sbder.append(" }");
         return sbder.toString();
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ATime.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ATime.java
index b97ed51..edbf007 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ATime.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/ATime.java
@@ -14,6 +14,8 @@
  */
 package edu.uci.ics.asterix.om.base;
 
+import java.io.IOException;
+
 import org.json.JSONException;
 import org.json.JSONObject;
 
@@ -90,8 +92,12 @@
     public String toString() {
         StringBuilder sbder = new StringBuilder();
         sbder.append("ATime: { ");
-        GregorianCalendarSystem.getInstance().getExtendStringRepWithTimezoneUntilField(chrononTime, 0, sbder,
-                GregorianCalendarSystem.Fields.HOUR, GregorianCalendarSystem.Fields.MILLISECOND);
+        try {
+            GregorianCalendarSystem.getInstance().getExtendStringRepUntilField(chrononTime, 0, sbder,
+                    GregorianCalendarSystem.Fields.HOUR, GregorianCalendarSystem.Fields.MILLISECOND, true);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
         sbder.append(" }");
         return sbder.toString();
 
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/temporal/ADurationParserFactory.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/temporal/ADurationParserFactory.java
index 84e2386..a651716 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/temporal/ADurationParserFactory.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/temporal/ADurationParserFactory.java
@@ -248,18 +248,30 @@
             throw new HyracksDataException(durationErrorMessage + ": no time fields after time separator.");
         }
 
+        int totalMonths = sign * (year * 12 + month);
+        long totalMilliseconds = sign
+                * (day * GregorianCalendarSystem.CHRONON_OF_DAY + hour * GregorianCalendarSystem.CHRONON_OF_HOUR
+                        + minute * GregorianCalendarSystem.CHRONON_OF_MINUTE + second
+                        * GregorianCalendarSystem.CHRONON_OF_SECOND + millisecond);
+
+        if (sign > 0) {
+            if (totalMonths < 0) {
+                throw new HyracksDataException(durationErrorMessage
+                        + ": total number of months is beyond its max value (-2147483647 to 2147483647).");
+            }
+            if (totalMilliseconds < 0) {
+                throw new HyracksDataException(
+                        durationErrorMessage
+                                + ": total number of milliseconds is beyond its max value (-9223372036854775808 to 9223372036854775807).");
+            }
+        }
+
         if (mutableObject instanceof AMutableDuration) {
-            ((AMutableDuration) mutableObject)
-                    .setValue(sign * (year * 12 + month),
-                            sign
-                                    * (day * 24 * 3600 * 1000L + 3600 * 1000L * hour + 60 * minute * 1000L + second
-                                            * 1000L + millisecond));
+            ((AMutableDuration) mutableObject).setValue(totalMonths, totalMilliseconds);
         } else if (mutableObject instanceof AMutableYearMonthDuration) {
-            ((AMutableYearMonthDuration) mutableObject).setMonths(sign * (year * 12 + month));
+            ((AMutableYearMonthDuration) mutableObject).setMonths(totalMonths);
         } else if (mutableObject instanceof AMutableDayTimeDuration) {
-            ((AMutableDayTimeDuration) mutableObject)
-                    .setMilliseconds(sign
-                            * (day * 24 * 3600 * 1000L + 3600 * 1000L * hour + 60 * minute * 1000L + second * 1000L + millisecond));
+            ((AMutableDayTimeDuration) mutableObject).setMilliseconds(totalMilliseconds);
         }
     }
 }
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/temporal/GregorianCalendarSystem.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/temporal/GregorianCalendarSystem.java
index f74af9b..8c21bad 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/temporal/GregorianCalendarSystem.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/base/temporal/GregorianCalendarSystem.java
@@ -30,6 +30,8 @@
  */
 package edu.uci.ics.asterix.om.base.temporal;
 
+import java.io.IOException;
+
 /**
  * A simple implementation of the Gregorian calendar system.
  * <p/>
@@ -53,9 +55,9 @@
 
     public static final int[] DAYS_SINCE_MONTH_BEGIN_ORDI = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };
 
-    public static final int CHRONON_OF_SECOND = 1000;
-    public static final int CHRONON_OF_MINUTE = 60 * CHRONON_OF_SECOND;
-    public static final int CHRONON_OF_HOUR = 60 * CHRONON_OF_MINUTE;
+    public static final long CHRONON_OF_SECOND = 1000;
+    public static final long CHRONON_OF_MINUTE = 60 * CHRONON_OF_SECOND;
+    public static final long CHRONON_OF_HOUR = 60 * CHRONON_OF_MINUTE;
     public static final long CHRONON_OF_DAY = 24 * CHRONON_OF_HOUR;
     public static final int MONTHS_IN_A_YEAR = 12;
 
@@ -234,9 +236,9 @@
      */
     public int getChronon(int hour, int min, int sec, int millis, int timezone) {
         // Added milliseconds for all fields but month and day
-        int chrononTime = (hour - timezone / 4) * CHRONON_OF_HOUR + (min - (timezone % 4) * 15) * CHRONON_OF_MINUTE
+        long chrononTime = (hour - timezone / 4) * CHRONON_OF_HOUR + (min - (timezone % 4) * 15) * CHRONON_OF_MINUTE
                 + sec * CHRONON_OF_SECOND + millis;
-        return chrononTime;
+        return (int)chrononTime;
     }
 
     public long adjustChrononByTimezone(long chronon, int timezone) {
@@ -268,8 +270,8 @@
      * @param sbder
      * @param untilField
      */
-    public void getExtendStringRepWithTimezoneUntilField(long chrononTime, int timezone, StringBuilder sbder,
-            Fields startField, Fields untilField) {
+    public void getExtendStringRepUntilField(long chrononTime, int timezone, Appendable sbder, Fields startField,
+            Fields untilField, boolean withTimezone) throws IOException {
 
         int year = getYear(chrononTime);
         int month = getMonthOfYear(chrononTime, year);
@@ -323,16 +325,18 @@
                 break;
         }
 
-        if (timezone == 0) {
-            sbder.append("Z");
-        } else {
-            short tzMin = (short) ((timezone % 4) * 15);
-            if (tzMin < 0) {
-                tzMin = (short) (-1 * tzMin);
+        if (withTimezone) {
+            if (timezone == 0) {
+                sbder.append("Z");
+            } else {
+                short tzMin = (short) ((timezone % 4) * 15);
+                if (tzMin < 0) {
+                    tzMin = (short) (-1 * tzMin);
+                }
+                short tzHr = (short) (timezone / 4);
+                sbder.append((tzHr >= 0 ? "+" : "-")).append(String.format("%02d", (tzHr < 0 ? -tzHr : tzHr)))
+                        .append(":").append(String.format("%02d", tzMin));
             }
-            short tzHr = (short) (timezone / 4);
-            sbder.append((tzHr >= 0 ? "+" : "-")).append(String.format("%02d", (tzHr < 0 ? -tzHr : tzHr))).append(":")
-                    .append(String.format("%02d", tzMin));
         }
     }
 
@@ -343,8 +347,8 @@
      * @param timezone
      * @param sbder
      */
-    public void getBasicStringRepWithTimezoneUntilField(long chrononTime, int timezone, StringBuilder sbder,
-            Fields startField, Fields untilField) {
+    public void getBasicStringRepUntilField(long chrononTime, int timezone, Appendable sbder, Fields startField,
+            Fields untilField, boolean withTimezone) throws IOException {
         int year = getYear(chrononTime);
         int month = getMonthOfYear(chrononTime, year);
 
@@ -382,16 +386,18 @@
                 break;
         }
 
-        if (timezone == 0) {
-            sbder.append("Z");
-        } else {
-            short tzMin = (short) ((timezone % 4) * 15);
-            if (tzMin < 0) {
-                tzMin = (short) (-1 * tzMin);
+        if (withTimezone) {
+            if (timezone == 0) {
+                sbder.append("Z");
+            } else {
+                short tzMin = (short) ((timezone % 4) * 15);
+                if (tzMin < 0) {
+                    tzMin = (short) (-1 * tzMin);
+                }
+                short tzHr = (short) (timezone / 4);
+                sbder.append((tzHr >= 0 ? "+" : "-")).append(String.format("%02d", (tzHr < 0 ? -tzHr : tzHr)))
+                        .append(String.format("%02d", tzMin));
             }
-            short tzHr = (short) (timezone / 4);
-            sbder.append((tzHr >= 0 ? "+" : "-")).append(String.format("%02d", (tzHr < 0 ? -tzHr : tzHr)))
-                    .append(String.format("%02d", tzMin));
         }
     }
 
@@ -480,8 +486,7 @@
      * Get the year for the given chronon time.
      * <p/>
      * This code is directly from the Joda library BadicChronology.java.<br/>
-     * The original authers are Stephen Colebourne, Brain S O'Neill and Guy Allard, and modified by JArod Wen on May
-     * 7th, 2012.
+     * The original authers are Stephen Colebourne, Brain S O'Neill and Guy Allard, and modified by JArod Wen on May 7th, 2012.
      * 
      * @param chrononTime
      * @return
@@ -528,8 +533,7 @@
      * Get the month of the year for the given chronon time and the year.
      * <p/>
      * This code is directly from the Joda library BasicGJChronology.java.<br/>
-     * The original authers are Stephen Colebourne, Brain S O'Neill and Guy Allard, and modified by JArod Wen on May
-     * 7th, 2012 and commented by Theodoros Ioannou on July 2012.
+     * The original authers are Stephen Colebourne, Brain S O'Neill and Guy Allard, and modified by JArod Wen on May 7th, 2012 and commented by Theodoros Ioannou on July 2012.
      * <p/>
      * 
      * @param millis
@@ -593,8 +597,7 @@
      * Get the day of the given month and year for the input chronon time.
      * <p/>
      * This function is directly from Joda Library BasicChronology.java.<br/>
-     * The original authers are Stephen Colebourne, Brain S O'Neill and Guy Allard, and modified by JArod Wen on May
-     * 7th, 2012.
+     * The original authers are Stephen Colebourne, Brain S O'Neill and Guy Allard, and modified by JArod Wen on May 7th, 2012.
      * <p/>
      * 
      * @param millis
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/functions/AsterixBuiltinFunctions.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/functions/AsterixBuiltinFunctions.java
index eb882b8..2a732ac 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/functions/AsterixBuiltinFunctions.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/functions/AsterixBuiltinFunctions.java
@@ -8,6 +8,8 @@
 
 import org.apache.commons.lang3.mutable.Mutable;
 
+import edu.uci.ics.asterix.common.functions.FunctionConstants;
+import edu.uci.ics.asterix.common.functions.FunctionSignature;
 import edu.uci.ics.asterix.om.typecomputer.base.IResultTypeComputer;
 import edu.uci.ics.asterix.om.typecomputer.impl.ABooleanTypeComputer;
 import edu.uci.ics.asterix.om.typecomputer.impl.ACircleTypeComputer;
@@ -103,18 +105,12 @@
         SI
     }
 
-    /*
-     * A function is categorized as public or private depending upon whether it can be used by the end-user in AQL queries.
-     */
-    public enum FunctionNamespace {
-        ASTERIX_PUBLIC,
-        ASTERIX_PRIVATE
-    }
-
     private static final FunctionInfoRepository registeredFunctions = new FunctionInfoRepository();
 
     // it is supposed to be an identity mapping
-    private final static Map<IFunctionInfo, IFunctionInfo> builtinFunctionsSet = new HashMap<IFunctionInfo, IFunctionInfo>();
+    private final static Map<IFunctionInfo, IFunctionInfo> builtinPublicFunctionsSet = new HashMap<IFunctionInfo, IFunctionInfo>();
+    private final static Map<IFunctionInfo, IFunctionInfo> builtinPrivateFunctionsSet = new HashMap<IFunctionInfo, IFunctionInfo>();
+
     private final static Map<IFunctionInfo, IResultTypeComputer> funTypeComputer = new HashMap<IFunctionInfo, IResultTypeComputer>();
 
     private final static Set<IFunctionInfo> builtinAggregateFunctions = new HashSet<IFunctionInfo>();
@@ -126,449 +122,430 @@
     private final static Map<IFunctionInfo, IFunctionInfo> scalarToAggregateFunctionMap = new HashMap<IFunctionInfo, IFunctionInfo>();
     private static final Map<IFunctionInfo, SpatialFilterKind> spatialFilterFunctions = new HashMap<IFunctionInfo, SpatialFilterKind>();
 
-    public final static FunctionIdentifier TYPE_OF = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "type-of", 1);
-    public final static FunctionIdentifier GET_HANDLE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "get-handle", 2);
-    public final static FunctionIdentifier GET_DATA = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "get-data", 2);
-    public final static FunctionIdentifier EMBED_TYPE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "embed-type", 1);
+    public final static FunctionIdentifier TYPE_OF = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "type-of", 1);
+    public final static FunctionIdentifier GET_HANDLE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "get-handle", 2);
+    public final static FunctionIdentifier GET_DATA = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "get-data",
+            2);
+    public final static FunctionIdentifier EMBED_TYPE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "embed-type", 1);
 
-    public final static FunctionIdentifier GET_ITEM = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "get-item", 2);
-    public final static FunctionIdentifier ANY_COLLECTION_MEMBER = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "any-collection-member", 1);
-    public final static FunctionIdentifier LISTIFY = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "listify", 1);
+    public final static FunctionIdentifier GET_ITEM = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "get-item",
+            2);
+    public final static FunctionIdentifier ANY_COLLECTION_MEMBER = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "any-collection-member", 1);
+    public final static FunctionIdentifier LISTIFY = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "listify", 1);
     // public final static FunctionIdentifier BAGIFY = new
     // FunctionIdentifier(ASTERIX_NS, "bagify", 1, true);
-    public final static FunctionIdentifier LEN = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(), "len",
-            1);
+    public final static FunctionIdentifier LEN = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "len", 1);
 
-    public final static FunctionIdentifier CONCAT_NON_NULL = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "concat-non-null", FunctionIdentifier.VARARGS);
-    public final static FunctionIdentifier EMPTY_STREAM = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "empty-stream", 0);
-    public final static FunctionIdentifier NON_EMPTY_STREAM = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "non-empty-stream", 0);
+    public final static FunctionIdentifier CONCAT_NON_NULL = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "concat-non-null", FunctionIdentifier.VARARGS);
+    public final static FunctionIdentifier EMPTY_STREAM = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "empty-stream", 0);
+    public final static FunctionIdentifier NON_EMPTY_STREAM = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "non-empty-stream", 0);
     public final static FunctionIdentifier ORDERED_LIST_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "ordered-list-constructor", FunctionIdentifier.VARARGS);
+            FunctionConstants.ASTERIX_NS, "ordered-list-constructor", FunctionIdentifier.VARARGS);
     public final static FunctionIdentifier UNORDERED_LIST_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "unordered-list-constructor", FunctionIdentifier.VARARGS);
+            FunctionConstants.ASTERIX_NS, "unordered-list-constructor", FunctionIdentifier.VARARGS);
 
     // records
     public final static FunctionIdentifier CLOSED_RECORD_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "closed-record-constructor", FunctionIdentifier.VARARGS);
+            FunctionConstants.ASTERIX_NS, "closed-record-constructor", FunctionIdentifier.VARARGS);
     public final static FunctionIdentifier OPEN_RECORD_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "open-record-constructor", FunctionIdentifier.VARARGS);
+            FunctionConstants.ASTERIX_NS, "open-record-constructor", FunctionIdentifier.VARARGS);
     public final static FunctionIdentifier RECORD_TYPE_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "record-type-constructor", FunctionIdentifier.VARARGS);
-    public final static FunctionIdentifier FIELD_ACCESS_BY_INDEX = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "field-access-by-index", 2);
-    public final static FunctionIdentifier FIELD_ACCESS_BY_NAME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "field-access-by-name", 2);
+            FunctionConstants.ASTERIX_NS, "record-type-constructor", FunctionIdentifier.VARARGS);
+    public final static FunctionIdentifier FIELD_ACCESS_BY_INDEX = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "field-access-by-index", 2);
+    public final static FunctionIdentifier FIELD_ACCESS_BY_NAME = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "field-access-by-name", 2);
 
-    public final static FunctionIdentifier NUMERIC_UNARY_MINUS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-unary-minus", 1);
+    public final static FunctionIdentifier NUMERIC_UNARY_MINUS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "numeric-unary-minus", 1);
 
-    public final static FunctionIdentifier NUMERIC_SUBTRACT = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-subtract", 2);
-    public final static FunctionIdentifier NUMERIC_MULTIPLY = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-multiply", 2);
-    public final static FunctionIdentifier NUMERIC_DIVIDE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-divide", 2);
-    public final static FunctionIdentifier NUMERIC_MOD = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-mod", 2);
-    public final static FunctionIdentifier NUMERIC_IDIV = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-idiv", 2);
-    public final static FunctionIdentifier CARET = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
-            "caret", 2);
+    public final static FunctionIdentifier NUMERIC_SUBTRACT = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "numeric-subtract", 2);
+    public final static FunctionIdentifier NUMERIC_MULTIPLY = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "numeric-multiply", 2);
+    public final static FunctionIdentifier NUMERIC_DIVIDE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "numeric-divide", 2);
+    public final static FunctionIdentifier NUMERIC_MOD = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "numeric-mod", 2);
+    public final static FunctionIdentifier NUMERIC_IDIV = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "numeric-idiv", 2);
+    public final static FunctionIdentifier CARET = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "caret", 2);
 
-    public final static FunctionIdentifier NUMERIC_ABS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-abs", 1);
-    public final static FunctionIdentifier NUMERIC_CEILING = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-ceiling", 1);
-    public final static FunctionIdentifier NUMERIC_FLOOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-floor", 1);
-    public final static FunctionIdentifier NUMERIC_ROUND = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-round", 1);
+    public final static FunctionIdentifier NUMERIC_ABS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "numeric-abs", 1);
+    public final static FunctionIdentifier NUMERIC_CEILING = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "numeric-ceiling", 1);
+    public final static FunctionIdentifier NUMERIC_FLOOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "numeric-floor", 1);
+    public final static FunctionIdentifier NUMERIC_ROUND = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "numeric-round", 1);
     public final static FunctionIdentifier NUMERIC_ROUND_HALF_TO_EVEN = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-round-half-to-even", 1);
+            FunctionConstants.ASTERIX_NS, "numeric-round-half-to-even", 1);
     public final static FunctionIdentifier NUMERIC_ROUND_HALF_TO_EVEN2 = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "numeric-round-half-to-even", 2);
+            FunctionConstants.ASTERIX_NS, "numeric-round-half-to-even", 2);
     // String funcitons
-    public final static FunctionIdentifier STRING_EQUAL = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "string-equal", 2);
-    public final static FunctionIdentifier STRING_START_WITH = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "start-with", 2);
-    public final static FunctionIdentifier STRING_END_WITH = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "end-with", 2);
-    public final static FunctionIdentifier STRING_MATCHES = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "matches", 2);
+    public final static FunctionIdentifier STRING_EQUAL = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "string-equal", 2);
+    public final static FunctionIdentifier STRING_START_WITH = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "start-with", 2);
+    public final static FunctionIdentifier STRING_END_WITH = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "end-with", 2);
+    public final static FunctionIdentifier STRING_MATCHES = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "matches", 2);
     public final static FunctionIdentifier STRING_MATCHES_WITH_FLAG = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "matches", 3);
-    public final static FunctionIdentifier STRING_LOWERCASE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "lowercase", 1);
-    public final static FunctionIdentifier STRING_REPLACE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "replace", 3);
+            FunctionConstants.ASTERIX_NS, "matches", 3);
+    public final static FunctionIdentifier STRING_LOWERCASE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "lowercase", 1);
+    public final static FunctionIdentifier STRING_REPLACE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "replace", 3);
     public final static FunctionIdentifier STRING_REPLACE_WITH_FLAG = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "replace", 4);
-    public final static FunctionIdentifier STRING_LENGTH = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "string-length", 1);
-    public final static FunctionIdentifier SUBSTRING2 = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
+            FunctionConstants.ASTERIX_NS, "replace", 4);
+    public final static FunctionIdentifier STRING_LENGTH = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "string-length", 1);
+    public final static FunctionIdentifier SUBSTRING2 = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
             "substring", 2);
-    public final static FunctionIdentifier SUBSTRING_BEFORE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "substring-before", 2);
-    public final static FunctionIdentifier SUBSTRING_AFTER = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "substring-after", 2);
-    public final static FunctionIdentifier STRING_TO_CODEPOINT = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "string-to-codepoint", 1);
-    public final static FunctionIdentifier CODEPOINT_TO_STRING = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "codepoint-to-string", 1);
-    public final static FunctionIdentifier STRING_CONCAT = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "string-concat", 1);
-    public final static FunctionIdentifier STRING_JOIN = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "string-join", 2);
+    public final static FunctionIdentifier SUBSTRING_BEFORE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "substring-before", 2);
+    public final static FunctionIdentifier SUBSTRING_AFTER = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "substring-after", 2);
+    public final static FunctionIdentifier STRING_TO_CODEPOINT = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "string-to-codepoint", 1);
+    public final static FunctionIdentifier CODEPOINT_TO_STRING = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "codepoint-to-string", 1);
+    public final static FunctionIdentifier STRING_CONCAT = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "string-concat", 1);
+    public final static FunctionIdentifier STRING_JOIN = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "string-join", 2);
 
-    public final static FunctionIdentifier DATASET = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
-            "dataset", 1);
-    public final static FunctionIdentifier FEED_INGEST = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "feed-ingest", 1);
+    public final static FunctionIdentifier DATASET = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "dataset", 1);
+    public final static FunctionIdentifier FEED_INGEST = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "feed-ingest", 1);
 
-    public final static FunctionIdentifier INDEX_SEARCH = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "index-search", FunctionIdentifier.VARARGS);
+    public final static FunctionIdentifier INDEX_SEARCH = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "index-search", FunctionIdentifier.VARARGS);
 
     public final static FunctionIdentifier MAKE_FIELD_INDEX_HANDLE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "make-field-index-handle", 2);
+            FunctionConstants.ASTERIX_NS, "make-field-index-handle", 2);
     public final static FunctionIdentifier MAKE_FIELD_NAME_HANDLE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "make-field-name-handle", 1);
+            FunctionConstants.ASTERIX_NS, "make-field-name-handle", 1);
 
-    public final static FunctionIdentifier SUBSTRING = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
+    public final static FunctionIdentifier SUBSTRING = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
             "substring", 3);
-    public final static FunctionIdentifier LIKE = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
-            "like", 2);
-    public final static FunctionIdentifier CONTAINS = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
-            "contains", 2);
-    public final static FunctionIdentifier STARTS_WITH = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "starts-with", 2);
-    public final static FunctionIdentifier ENDS_WITH = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
+    public final static FunctionIdentifier LIKE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "like", 2);
+    public final static FunctionIdentifier CONTAINS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "contains",
+            2);
+    public final static FunctionIdentifier STARTS_WITH = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "starts-with", 2);
+    public final static FunctionIdentifier ENDS_WITH = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
             "ends-with", 2);
 
-    public final static FunctionIdentifier AVG = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "agg-avg", 1);
-    public final static FunctionIdentifier COUNT = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "agg-count", 1);
-    public final static FunctionIdentifier SUM = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "agg-sum", 1);
-    public final static FunctionIdentifier LOCAL_SUM = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
+    public final static FunctionIdentifier AVG = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "agg-avg", 1);
+    public final static FunctionIdentifier COUNT = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "agg-count", 1);
+    public final static FunctionIdentifier SUM = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "agg-sum", 1);
+    public final static FunctionIdentifier LOCAL_SUM = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
             "agg-local-sum", 1);
-    public final static FunctionIdentifier MAX = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "agg-max", 1);
-    public final static FunctionIdentifier LOCAL_MAX = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
+    public final static FunctionIdentifier MAX = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "agg-max", 1);
+    public final static FunctionIdentifier LOCAL_MAX = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
             "agg-local-max", 1);
-    public final static FunctionIdentifier MIN = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "agg-min", 1);
-    public final static FunctionIdentifier LOCAL_MIN = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
+    public final static FunctionIdentifier MIN = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "agg-min", 1);
+    public final static FunctionIdentifier LOCAL_MIN = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
             "agg-local-min", 1);
-    public final static FunctionIdentifier GLOBAL_AVG = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "agg-global-avg", 1);
-    public final static FunctionIdentifier LOCAL_AVG = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
+    public final static FunctionIdentifier GLOBAL_AVG = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "agg-global-avg", 1);
+    public final static FunctionIdentifier LOCAL_AVG = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
             "agg-local-avg", 1);
 
-    public final static FunctionIdentifier SCALAR_AVG = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
-            "avg", 1);
-    public final static FunctionIdentifier SCALAR_COUNT = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "count", 1);
-    public final static FunctionIdentifier SCALAR_SUM = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
-            "sum", 1);
-    public final static FunctionIdentifier SCALAR_MAX = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
-            "max", 1);
-    public final static FunctionIdentifier SCALAR_MIN = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
-            "min", 1);
-    public final static FunctionIdentifier SCALAR_GLOBAL_AVG = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "global-avg", 1);
-    public final static FunctionIdentifier SCALAR_LOCAL_AVG = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "local-avg", 1);
+    public final static FunctionIdentifier SCALAR_AVG = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "avg", 1);
+    public final static FunctionIdentifier SCALAR_COUNT = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "count",
+            1);
+    public final static FunctionIdentifier SCALAR_SUM = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "sum", 1);
+    public final static FunctionIdentifier SCALAR_MAX = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "max", 1);
+    public final static FunctionIdentifier SCALAR_MIN = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "min", 1);
+    public final static FunctionIdentifier SCALAR_GLOBAL_AVG = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "global-avg", 1);
+    public final static FunctionIdentifier SCALAR_LOCAL_AVG = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "local-avg", 1);
 
     // serializable aggregate functions
-    public final static FunctionIdentifier SERIAL_AVG = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "avg-serial", 1);
-    public final static FunctionIdentifier SERIAL_COUNT = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "count-serial", 1);
-    public final static FunctionIdentifier SERIAL_SUM = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "sum-serial", 1);
-    public final static FunctionIdentifier SERIAL_LOCAL_SUM = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "local-sum-serial", 1);
-    public final static FunctionIdentifier SERIAL_GLOBAL_AVG = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "global-avg-serial", 1);
-    public final static FunctionIdentifier SERIAL_LOCAL_AVG = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "local-avg-serial", 1);
+    public final static FunctionIdentifier SERIAL_AVG = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "avg-serial", 1);
+    public final static FunctionIdentifier SERIAL_COUNT = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "count-serial", 1);
+    public final static FunctionIdentifier SERIAL_SUM = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "sum-serial", 1);
+    public final static FunctionIdentifier SERIAL_LOCAL_SUM = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "local-sum-serial", 1);
+    public final static FunctionIdentifier SERIAL_GLOBAL_AVG = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "global-avg-serial", 1);
+    public final static FunctionIdentifier SERIAL_LOCAL_AVG = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "local-avg-serial", 1);
 
-    public final static FunctionIdentifier SCAN_COLLECTION = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "scan-collection", 1);
-    public final static FunctionIdentifier SUBSET_COLLECTION = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "subset-collection", 3);
+    public final static FunctionIdentifier SCAN_COLLECTION = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "scan-collection", 1);
+    public final static FunctionIdentifier SUBSET_COLLECTION = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "subset-collection", 3);
 
-    public final static FunctionIdentifier RANGE = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
-            "range", 2);
+    public final static FunctionIdentifier RANGE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "range", 2);
 
     // fuzzy functions:
-    public final static FunctionIdentifier FUZZY_EQ = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "fuzzy-eq", 2);
+    public final static FunctionIdentifier FUZZY_EQ = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "fuzzy-eq",
+            2);
 
-    public final static FunctionIdentifier PREFIX_LEN_JACCARD = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "prefix-len-jaccard", 2);
+    public final static FunctionIdentifier PREFIX_LEN_JACCARD = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "prefix-len-jaccard", 2);
 
-    public final static FunctionIdentifier SIMILARITY_JACCARD = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "similarity-jaccard", 2);
+    public final static FunctionIdentifier SIMILARITY_JACCARD = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "similarity-jaccard", 2);
     public final static FunctionIdentifier SIMILARITY_JACCARD_CHECK = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "similarity-jaccard-check", 3);
+            FunctionConstants.ASTERIX_NS, "similarity-jaccard-check", 3);
     public final static FunctionIdentifier SIMILARITY_JACCARD_SORTED = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "similarity-jaccard-sorted", 2);
+            FunctionConstants.ASTERIX_NS, "similarity-jaccard-sorted", 2);
     public final static FunctionIdentifier SIMILARITY_JACCARD_SORTED_CHECK = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "similarity-jaccard-sorted-check", 3);
+            FunctionConstants.ASTERIX_NS, "similarity-jaccard-sorted-check", 3);
     public final static FunctionIdentifier SIMILARITY_JACCARD_PREFIX = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "similarity-jaccard-prefix", 6);
+            FunctionConstants.ASTERIX_NS, "similarity-jaccard-prefix", 6);
     public final static FunctionIdentifier SIMILARITY_JACCARD_PREFIX_CHECK = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "similarity-jaccard-prefix-check", 6);
+            FunctionConstants.ASTERIX_NS, "similarity-jaccard-prefix-check", 6);
 
-    public final static FunctionIdentifier EDIT_DISTANCE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "edit-distance", 2);
-    public final static FunctionIdentifier EDIT_DISTANCE_CHECK = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "edit-distance-check", 3);
+    public final static FunctionIdentifier EDIT_DISTANCE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "edit-distance", 2);
+    public final static FunctionIdentifier EDIT_DISTANCE_CHECK = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "edit-distance-check", 3);
     public final static FunctionIdentifier EDIT_DISTANCE_LIST_IS_FILTERABLE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "edit-distance-list-is-filterable", 2);
+            FunctionConstants.ASTERIX_NS, "edit-distance-list-is-filterable", 2);
     public final static FunctionIdentifier EDIT_DISTANCE_STRING_IS_FILTERABLE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "edit-distance-string-is-filterable", 4);
+            FunctionConstants.ASTERIX_NS, "edit-distance-string-is-filterable", 4);
 
     // tokenizers:
-    public final static FunctionIdentifier WORD_TOKENS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "word-tokens", 1);
-    public final static FunctionIdentifier HASHED_WORD_TOKENS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "hashed-word-tokens", 1);
+    public final static FunctionIdentifier WORD_TOKENS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "word-tokens", 1);
+    public final static FunctionIdentifier HASHED_WORD_TOKENS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "hashed-word-tokens", 1);
     public final static FunctionIdentifier COUNTHASHED_WORD_TOKENS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "counthashed-word-tokens", 1);
-    public final static FunctionIdentifier GRAM_TOKENS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "gram-tokens", 3);
-    public final static FunctionIdentifier HASHED_GRAM_TOKENS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "hashed-gram-tokens", 3);
+            FunctionConstants.ASTERIX_NS, "counthashed-word-tokens", 1);
+    public final static FunctionIdentifier GRAM_TOKENS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "gram-tokens", 3);
+    public final static FunctionIdentifier HASHED_GRAM_TOKENS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "hashed-gram-tokens", 3);
     public final static FunctionIdentifier COUNTHASHED_GRAM_TOKENS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "counthashed-gram-tokens", 3);
+            FunctionConstants.ASTERIX_NS, "counthashed-gram-tokens", 3);
 
-    public final static FunctionIdentifier TID = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "tid", 0);
+    public final static FunctionIdentifier TID = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "tid", 0);
 
     // constructors:
-    public final static FunctionIdentifier BOOLEAN_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "boolean", 1);
-    public final static FunctionIdentifier NULL_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "null", 1);
-    public final static FunctionIdentifier STRING_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "string", 1);
-    public final static FunctionIdentifier INT8_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "int8", 1);
-    public final static FunctionIdentifier INT16_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "int16", 1);
-    public final static FunctionIdentifier INT32_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "int32", 1);
-    public final static FunctionIdentifier INT64_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "int64", 1);
-    public final static FunctionIdentifier FLOAT_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "float", 1);
-    public final static FunctionIdentifier DOUBLE_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "double", 1);
-    public final static FunctionIdentifier POINT_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "point", 1);
-    public final static FunctionIdentifier POINT3D_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "point3d", 1);
-    public final static FunctionIdentifier LINE_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "line", 1);
-    public final static FunctionIdentifier CIRCLE_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "circle", 1);
-    public final static FunctionIdentifier RECTANGLE_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "rectangle", 1);
-    public final static FunctionIdentifier POLYGON_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "polygon", 1);
-    public final static FunctionIdentifier TIME_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "time", 1);
-    public final static FunctionIdentifier DATE_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "date", 1);
-    public final static FunctionIdentifier DATETIME_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "datetime", 1);
-    public final static FunctionIdentifier DURATION_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "duration", 1);
+    public final static FunctionIdentifier BOOLEAN_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "boolean", 1);
+    public final static FunctionIdentifier NULL_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "null", 1);
+    public final static FunctionIdentifier STRING_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "string", 1);
+    public final static FunctionIdentifier INT8_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "int8", 1);
+    public final static FunctionIdentifier INT16_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "int16", 1);
+    public final static FunctionIdentifier INT32_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "int32", 1);
+    public final static FunctionIdentifier INT64_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "int64", 1);
+    public final static FunctionIdentifier FLOAT_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "float", 1);
+    public final static FunctionIdentifier DOUBLE_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "double", 1);
+    public final static FunctionIdentifier POINT_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "point", 1);
+    public final static FunctionIdentifier POINT3D_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "point3d", 1);
+    public final static FunctionIdentifier LINE_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "line", 1);
+    public final static FunctionIdentifier CIRCLE_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "circle", 1);
+    public final static FunctionIdentifier RECTANGLE_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "rectangle", 1);
+    public final static FunctionIdentifier POLYGON_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "polygon", 1);
+    public final static FunctionIdentifier TIME_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "time", 1);
+    public final static FunctionIdentifier DATE_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "date", 1);
+    public final static FunctionIdentifier DATETIME_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "datetime", 1);
+    public final static FunctionIdentifier DURATION_CONSTRUCTOR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "duration", 1);
 
     public final static FunctionIdentifier YEAR_MONTH_DURATION_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "year-month-duration", 1);
+            FunctionConstants.ASTERIX_NS, "year-month-duration", 1);
     public final static FunctionIdentifier DAY_TIME_DURATION_CONSTRUCTOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "day-time-duration", 1);
+            FunctionConstants.ASTERIX_NS, "day-time-duration", 1);
 
     public final static FunctionIdentifier INTERVAL_CONSTRUCTOR_DATE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-from-date", 2);
+            FunctionConstants.ASTERIX_NS, "interval-from-date", 2);
     public final static FunctionIdentifier INTERVAL_CONSTRUCTOR_TIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-from-time", 2);
+            FunctionConstants.ASTERIX_NS, "interval-from-time", 2);
     public final static FunctionIdentifier INTERVAL_CONSTRUCTOR_DATETIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-from-datetime", 2);
+            FunctionConstants.ASTERIX_NS, "interval-from-datetime", 2);
     public final static FunctionIdentifier INTERVAL_CONSTRUCTOR_START_FROM_DATE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-start-from-date", 2);
+            FunctionConstants.ASTERIX_NS, "interval-start-from-date", 2);
     public final static FunctionIdentifier INTERVAL_CONSTRUCTOR_START_FROM_TIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-start-from-time", 2);
+            FunctionConstants.ASTERIX_NS, "interval-start-from-time", 2);
     public final static FunctionIdentifier INTERVAL_CONSTRUCTOR_START_FROM_DATETIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-start-from-datetime", 2);
-    public final static FunctionIdentifier INTERVAL_BEFORE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-before", 2);
-    public final static FunctionIdentifier INTERVAL_AFTER = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-after", 2);
-    public final static FunctionIdentifier INTERVAL_MEETS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-meets", 2);
-    public final static FunctionIdentifier INTERVAL_MET_BY = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-met-by", 2);
-    public final static FunctionIdentifier INTERVAL_OVERLAPS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-overlaps", 2);
+            FunctionConstants.ASTERIX_NS, "interval-start-from-datetime", 2);
+    public final static FunctionIdentifier INTERVAL_BEFORE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-before", 2);
+    public final static FunctionIdentifier INTERVAL_AFTER = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-after", 2);
+    public final static FunctionIdentifier INTERVAL_MEETS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-meets", 2);
+    public final static FunctionIdentifier INTERVAL_MET_BY = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-met-by", 2);
+    public final static FunctionIdentifier INTERVAL_OVERLAPS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-overlaps", 2);
     public final static FunctionIdentifier INTERVAL_OVERLAPPED_BY = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-overlapped-by", 2);
-    public final static FunctionIdentifier OVERLAP = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
-            "overlap", 2);
-    public final static FunctionIdentifier INTERVAL_STARTS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-starts", 2);
-    public final static FunctionIdentifier INTERVAL_STARTED_BY = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-started-by", 2);
-    public final static FunctionIdentifier INTERVAL_COVERS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-covers", 2);
-    public final static FunctionIdentifier INTERVAL_COVERED_BY = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-covered-by", 2);
-    public final static FunctionIdentifier INTERVAL_ENDS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-ends", 2);
-    public final static FunctionIdentifier INTERVAL_ENDED_BY = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "interval-ended-by", 2);
-    public final static FunctionIdentifier CURRENT_TIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "current-time", 0);
-    public final static FunctionIdentifier CURRENT_DATE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "current-date", 0);
-    public final static FunctionIdentifier CURRENT_DATETIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "current-datetime", 0);
-    public final static FunctionIdentifier DURATION_EQUAL = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "duration-equal", 2);
+            FunctionConstants.ASTERIX_NS, "interval-overlapped-by", 2);
+    public final static FunctionIdentifier OVERLAP = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "overlap", 2);
+    public final static FunctionIdentifier INTERVAL_STARTS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-starts", 2);
+    public final static FunctionIdentifier INTERVAL_STARTED_BY = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-started-by", 2);
+    public final static FunctionIdentifier INTERVAL_COVERS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-covers", 2);
+    public final static FunctionIdentifier INTERVAL_COVERED_BY = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-covered-by", 2);
+    public final static FunctionIdentifier INTERVAL_ENDS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-ends", 2);
+    public final static FunctionIdentifier INTERVAL_ENDED_BY = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "interval-ended-by", 2);
+    public final static FunctionIdentifier CURRENT_TIME = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "current-time", 0);
+    public final static FunctionIdentifier CURRENT_DATE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "current-date", 0);
+    public final static FunctionIdentifier CURRENT_DATETIME = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "current-datetime", 0);
+    public final static FunctionIdentifier DURATION_EQUAL = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "duration-equal", 2);
     public final static FunctionIdentifier YEAR_MONTH_DURATION_GREATER_THAN = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "year-month-duration-greater-than", 2);
+            FunctionConstants.ASTERIX_NS, "year-month-duration-greater-than", 2);
     public final static FunctionIdentifier YEAR_MONTH_DURATION_LESS_THAN = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "year-month-duration-less-than", 2);
+            FunctionConstants.ASTERIX_NS, "year-month-duration-less-than", 2);
     public final static FunctionIdentifier DAY_TIME_DURATION_GREATER_THAN = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "day-time-duration-greater-than", 2);
+            FunctionConstants.ASTERIX_NS, "day-time-duration-greater-than", 2);
     public final static FunctionIdentifier DAY_TIME_DURATION_LESS_THAN = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "day-time-duration-less-than", 2);
-    public final static FunctionIdentifier DURATION_FROM_MONTHS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "duration-from-months", 1);
+            FunctionConstants.ASTERIX_NS, "day-time-duration-less-than", 2);
+    public final static FunctionIdentifier DURATION_FROM_MONTHS = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "duration-from-months", 1);
     public final static FunctionIdentifier MONTHS_FROM_YEAR_MONTH_DURATION = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "months-from-year-month-duration", 1);
+            FunctionConstants.ASTERIX_NS, "months-from-year-month-duration", 1);
     public final static FunctionIdentifier DURATION_FROM_MILLISECONDS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "duration-from-ms", 1);
+            FunctionConstants.ASTERIX_NS, "duration-from-ms", 1);
     public final static FunctionIdentifier MILLISECONDS_FROM_DAY_TIME_DURATION = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "ms-from-day-time-duration", 1);
+            FunctionConstants.ASTERIX_NS, "ms-from-day-time-duration", 1);
 
     public final static FunctionIdentifier GET_YEAR_MONTH_DURATION = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "get-year-month-duration", 1);
-    public final static FunctionIdentifier GET_DAY_TIME_DURATION = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "get-day-time-duration", 1);
+            FunctionConstants.ASTERIX_NS, "get-year-month-duration", 1);
+    public final static FunctionIdentifier GET_DAY_TIME_DURATION = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "get-day-time-duration", 1);
 
     // spatial
-    public final static FunctionIdentifier CREATE_POINT = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "create-point", 2);
-    public final static FunctionIdentifier CREATE_LINE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "create-line", 2);
-    public final static FunctionIdentifier CREATE_POLYGON = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "create-polygon", FunctionIdentifier.VARARGS);
-    public final static FunctionIdentifier CREATE_CIRCLE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "create-circle", 2);
-    public final static FunctionIdentifier CREATE_RECTANGLE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "create-rectangle", 2);
-    public final static FunctionIdentifier SPATIAL_INTERSECT = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "spatial-intersect", 2);
-    public final static FunctionIdentifier SPATIAL_AREA = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "spatial-area", 1);
-    public final static FunctionIdentifier SPATIAL_DISTANCE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "spatial-distance", 2);
-    public final static FunctionIdentifier CREATE_MBR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "create-mbr", 3);
-    public final static FunctionIdentifier SPATIAL_CELL = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "spatial-cell", 4);
-    public final static FunctionIdentifier SWITCH_CASE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "switch-case", FunctionIdentifier.VARARGS);
-    public final static FunctionIdentifier REG_EXP = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "reg-exp", 2);
+    public final static FunctionIdentifier CREATE_POINT = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "create-point", 2);
+    public final static FunctionIdentifier CREATE_LINE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "create-line", 2);
+    public final static FunctionIdentifier CREATE_POLYGON = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "create-polygon", FunctionIdentifier.VARARGS);
+    public final static FunctionIdentifier CREATE_CIRCLE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "create-circle", 2);
+    public final static FunctionIdentifier CREATE_RECTANGLE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "create-rectangle", 2);
+    public final static FunctionIdentifier SPATIAL_INTERSECT = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "spatial-intersect", 2);
+    public final static FunctionIdentifier SPATIAL_AREA = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "spatial-area", 1);
+    public final static FunctionIdentifier SPATIAL_DISTANCE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "spatial-distance", 2);
+    public final static FunctionIdentifier CREATE_MBR = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "create-mbr", 3);
+    public final static FunctionIdentifier SPATIAL_CELL = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "spatial-cell", 4);
+    public final static FunctionIdentifier SWITCH_CASE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "switch-case", FunctionIdentifier.VARARGS);
+    public final static FunctionIdentifier REG_EXP = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "reg-exp", 2);
 
-    public final static FunctionIdentifier INJECT_FAILURE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "inject-failure", 2);
-    public final static FunctionIdentifier CAST_RECORD = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PRIVATE.name(), "cast-record", 1);
-    public final static FunctionIdentifier CAST_LIST = new FunctionIdentifier(FunctionNamespace.ASTERIX_PUBLIC.name(),
+    public final static FunctionIdentifier INJECT_FAILURE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "inject-failure", 2);
+    public final static FunctionIdentifier CAST_RECORD = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "cast-record", 1);
+    public final static FunctionIdentifier CAST_LIST = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
             "cast-list", 1);
 
     // Spatial and temporal type accessors
     public static final FunctionIdentifier ACCESSOR_TEMPORAL_YEAR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "year", 1);
+            FunctionConstants.ASTERIX_NS, "year", 1);
     public static final FunctionIdentifier ACCESSOR_TEMPORAL_MONTH = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "month", 1);
-    public static final FunctionIdentifier ACCESSOR_TEMPORAL_DAY = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "day", 1);
+            FunctionConstants.ASTERIX_NS, "month", 1);
+    public static final FunctionIdentifier ACCESSOR_TEMPORAL_DAY = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "day", 1);
     public static final FunctionIdentifier ACCESSOR_TEMPORAL_HOUR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "hour", 1);
-    public static final FunctionIdentifier ACCESSOR_TEMPORAL_MIN = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "minute", 1);
-    public static final FunctionIdentifier ACCESSOR_TEMPORAL_SEC = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "second", 1);
+            FunctionConstants.ASTERIX_NS, "hour", 1);
+    public static final FunctionIdentifier ACCESSOR_TEMPORAL_MIN = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "minute", 1);
+    public static final FunctionIdentifier ACCESSOR_TEMPORAL_SEC = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "second", 1);
     public static final FunctionIdentifier ACCESSOR_TEMPORAL_MILLISEC = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "millisecond", 1);
+            FunctionConstants.ASTERIX_NS, "millisecond", 1);
     public static final FunctionIdentifier ACCESSOR_TEMPORAL_INTERVAL_START = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "get-interval-start", 1);
+            FunctionConstants.ASTERIX_NS, "get-interval-start", 1);
     public static final FunctionIdentifier ACCESSOR_TEMPORAL_INTERVAL_END = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "get-interval-end", 1);
+            FunctionConstants.ASTERIX_NS, "get-interval-end", 1);
 
     // Temporal functions
     public static final FunctionIdentifier DATE_FROM_UNIX_TIME_IN_DAYS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "date-from-unix-time-in-days", 1);
-    public static final FunctionIdentifier DATE_FROM_DATETIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "date-from-datetime", 1);
-    public final static FunctionIdentifier ADD_DATE_DURATION = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "add-date-duration", 2);
-    public final static FunctionIdentifier SUBTRACT_DATE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "subtract-date", 2);
+            FunctionConstants.ASTERIX_NS, "date-from-unix-time-in-days", 1);
+    public static final FunctionIdentifier DATE_FROM_DATETIME = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "date-from-datetime", 1);
+    public final static FunctionIdentifier ADD_DATE_DURATION = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "add-date-duration", 2);
+    public final static FunctionIdentifier SUBTRACT_DATE = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "subtract-date", 2);
     public final static FunctionIdentifier TIME_FROM_UNIX_TIME_IN_MS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "time-from-unix-time-in-ms", 1);
-    public final static FunctionIdentifier TIME_FROM_DATETIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "time-from-datetime", 1);
-    public final static FunctionIdentifier SUBTRACT_TIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "subtract-time", 2);
-    public final static FunctionIdentifier ADD_TIME_DURATION = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "add-time-duration", 2);
+            FunctionConstants.ASTERIX_NS, "time-from-unix-time-in-ms", 1);
+    public final static FunctionIdentifier TIME_FROM_DATETIME = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "time-from-datetime", 1);
+    public final static FunctionIdentifier SUBTRACT_TIME = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "subtract-time", 2);
+    public final static FunctionIdentifier ADD_TIME_DURATION = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "add-time-duration", 2);
     public final static FunctionIdentifier DATETIME_FROM_UNIX_TIME_IN_MS = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "datetime-from-unix-time-in-ms", 1);
+            FunctionConstants.ASTERIX_NS, "datetime-from-unix-time-in-ms", 1);
     public final static FunctionIdentifier DATETIME_FROM_DATE_TIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "datetime-from-date-time", 2);
-    public final static FunctionIdentifier SUBTRACT_DATETIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "subtract-datetime", 2);
-    public final static FunctionIdentifier ADD_DATETIME_DURATION = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "add-datetime-duration", 2);
+            FunctionConstants.ASTERIX_NS, "datetime-from-date-time", 2);
+    public final static FunctionIdentifier SUBTRACT_DATETIME = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "subtract-datetime", 2);
+    public final static FunctionIdentifier ADD_DATETIME_DURATION = new FunctionIdentifier(FunctionConstants.ASTERIX_NS,
+            "add-datetime-duration", 2);
     public final static FunctionIdentifier CALENDAR_DURATION_FROM_DATETIME = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "calendar-duration-from-datetime", 2);
+            FunctionConstants.ASTERIX_NS, "calendar-duration-from-datetime", 2);
     public final static FunctionIdentifier CALENDAR_DURATION_FROM_DATE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "calendar-duration-from-date", 2);
+            FunctionConstants.ASTERIX_NS, "calendar-duration-from-date", 2);
     public final static FunctionIdentifier ADJUST_TIME_FOR_TIMEZONE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "adjust-time-for-timezone", 2);
+            FunctionConstants.ASTERIX_NS, "adjust-time-for-timezone", 2);
     public final static FunctionIdentifier ADJUST_DATETIME_FOR_TIMEZONE = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "adjust-datetime-for-timezone", 2);
+            FunctionConstants.ASTERIX_NS, "adjust-datetime-for-timezone", 2);
 
     public final static FunctionIdentifier GET_POINT_X_COORDINATE_ACCESSOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "get-x", 1);
+            FunctionConstants.ASTERIX_NS, "get-x", 1);
     public final static FunctionIdentifier GET_POINT_Y_COORDINATE_ACCESSOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "get-y", 1);
+            FunctionConstants.ASTERIX_NS, "get-y", 1);
     public final static FunctionIdentifier GET_CIRCLE_RADIUS_ACCESSOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "get-radius", 1);
+            FunctionConstants.ASTERIX_NS, "get-radius", 1);
     public final static FunctionIdentifier GET_CIRCLE_CENTER_ACCESSOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "get-center", 1);
+            FunctionConstants.ASTERIX_NS, "get-center", 1);
     public final static FunctionIdentifier GET_POINTS_LINE_RECTANGLE_POLYGON_ACCESSOR = new FunctionIdentifier(
-            FunctionNamespace.ASTERIX_PUBLIC.name(), "get-points", 1);
+            FunctionConstants.ASTERIX_NS, "get-points", 1);
 
     public static final FunctionIdentifier EQ = AlgebricksBuiltinFunctions.EQ;
     public static final FunctionIdentifier LE = AlgebricksBuiltinFunctions.LE;
@@ -582,8 +559,8 @@
     public static final FunctionIdentifier NUMERIC_ADD = AlgebricksBuiltinFunctions.NUMERIC_ADD;
     public static final FunctionIdentifier IS_NULL = AlgebricksBuiltinFunctions.IS_NULL;
 
-    public static final FunctionIdentifier NOT_NULL = new FunctionIdentifier(FunctionNamespace.ASTERIX_PRIVATE.name(),
-            "not-null", 1);
+    public static final FunctionIdentifier NOT_NULL = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, "not-null",
+            1);
 
     public static IFunctionInfo getAsterixFunctionInfo(FunctionIdentifier fid) {
         IFunctionInfo finfo = registeredFunctions.get(fid);
@@ -600,72 +577,73 @@
     static {
 
         // first, take care of Algebricks builtin functions
-        add(EQ, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(LE, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(GE, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(LT, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(GT, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(IS_NULL, ABooleanTypeComputer.INSTANCE);
-        add(AND, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(NEQ, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(NOT, UnaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(OR, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(NUMERIC_ADD, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
+        addFunction(IS_NULL, ABooleanTypeComputer.INSTANCE);
+        addFunction(NOT, UnaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+
+        addPrivateFunction(EQ, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addPrivateFunction(LE, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addPrivateFunction(GE, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addPrivateFunction(LT, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addPrivateFunction(GT, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addPrivateFunction(AND, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addPrivateFunction(NEQ, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addPrivateFunction(OR, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addPrivateFunction(NUMERIC_ADD, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
 
         // and then, Asterix builtin functions
-        add(NOT_NULL, NotNullTypeComputer.INSTANCE);
-        add(ANY_COLLECTION_MEMBER, NonTaggedCollectionMemberResultType.INSTANCE);
-        add(AVG, OptionalADoubleTypeComputer.INSTANCE);
-        add(BOOLEAN_CONSTRUCTOR, UnaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(CARET, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
-        add(CIRCLE_CONSTRUCTOR, OptionalACircleTypeComputer.INSTANCE);
-        add(CLOSED_RECORD_CONSTRUCTOR, ClosedRecordConstructorResultType.INSTANCE);
-        add(CONCAT_NON_NULL, ConcatNonNullTypeComputer.INSTANCE);
+        addPrivateFunction(NOT_NULL, NotNullTypeComputer.INSTANCE);
+        addPrivateFunction(ANY_COLLECTION_MEMBER, NonTaggedCollectionMemberResultType.INSTANCE);
+        addPrivateFunction(AVG, OptionalADoubleTypeComputer.INSTANCE);
+        addFunction(BOOLEAN_CONSTRUCTOR, UnaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addFunction(CARET, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
+        addFunction(CIRCLE_CONSTRUCTOR, OptionalACircleTypeComputer.INSTANCE);
+        addPrivateFunction(CLOSED_RECORD_CONSTRUCTOR, ClosedRecordConstructorResultType.INSTANCE);
+        addPrivateFunction(CONCAT_NON_NULL, ConcatNonNullTypeComputer.INSTANCE);
 
-        add(CONTAINS, ABooleanTypeComputer.INSTANCE);
-        add(COUNT, AInt32TypeComputer.INSTANCE);
-        add(COUNTHASHED_GRAM_TOKENS, OrderedListOfAInt32TypeComputer.INSTANCE);
-        add(COUNTHASHED_WORD_TOKENS, OrderedListOfAInt32TypeComputer.INSTANCE);
-        add(CREATE_CIRCLE, ACircleTypeComputer.INSTANCE);
-        add(CREATE_LINE, ALineTypeComputer.INSTANCE);
-        add(CREATE_MBR, ADoubleTypeComputer.INSTANCE);
-        add(CREATE_POINT, APointTypeComputer.INSTANCE);
-        add(CREATE_POLYGON, APolygonTypeComputer.INSTANCE);
-        add(CREATE_RECTANGLE, ARectangleTypeComputer.INSTANCE);
+        addFunction(CONTAINS, ABooleanTypeComputer.INSTANCE);
+        addPrivateFunction(COUNT, AInt32TypeComputer.INSTANCE);
+        addFunction(COUNTHASHED_GRAM_TOKENS, OrderedListOfAInt32TypeComputer.INSTANCE);
+        addPrivateFunction(COUNTHASHED_WORD_TOKENS, OrderedListOfAInt32TypeComputer.INSTANCE);
+        addFunction(CREATE_CIRCLE, ACircleTypeComputer.INSTANCE);
+        addFunction(CREATE_LINE, ALineTypeComputer.INSTANCE);
+        addFunction(CREATE_MBR, ADoubleTypeComputer.INSTANCE);
+        addFunction(CREATE_POINT, APointTypeComputer.INSTANCE);
+        addFunction(CREATE_POLYGON, APolygonTypeComputer.INSTANCE);
+        addFunction(CREATE_RECTANGLE, ARectangleTypeComputer.INSTANCE);
 
-        add(DATE_CONSTRUCTOR, OptionalADateTypeComputer.INSTANCE);
-        add(DATETIME_CONSTRUCTOR, OptionalADateTimeTypeComputer.INSTANCE);
-        add(DOUBLE_CONSTRUCTOR, OptionalADoubleTypeComputer.INSTANCE);
-        add(DURATION_CONSTRUCTOR, OptionalADurationTypeComputer.INSTANCE);
-        add(YEAR_MONTH_DURATION_CONSTRUCTOR, OptionalAYearMonthDurationTypeComputer.INSTANCE);
-        add(DAY_TIME_DURATION_CONSTRUCTOR, OptionalADayTimeDurationTypeComputer.INSTANCE);
-        add(EDIT_DISTANCE, AInt32TypeComputer.INSTANCE);
-        add(EDIT_DISTANCE_CHECK, OrderedListOfAnyTypeComputer.INSTANCE);
-        add(EDIT_DISTANCE_STRING_IS_FILTERABLE, ABooleanTypeComputer.INSTANCE);
-        add(EDIT_DISTANCE_LIST_IS_FILTERABLE, ABooleanTypeComputer.INSTANCE);
-        add(EMBED_TYPE, new IResultTypeComputer() {
+        addFunction(DATE_CONSTRUCTOR, OptionalADateTypeComputer.INSTANCE);
+        addFunction(DATETIME_CONSTRUCTOR, OptionalADateTimeTypeComputer.INSTANCE);
+        addFunction(DOUBLE_CONSTRUCTOR, OptionalADoubleTypeComputer.INSTANCE);
+        addFunction(DURATION_CONSTRUCTOR, OptionalADurationTypeComputer.INSTANCE);
+        addFunction(YEAR_MONTH_DURATION_CONSTRUCTOR, OptionalAYearMonthDurationTypeComputer.INSTANCE);
+        addFunction(DAY_TIME_DURATION_CONSTRUCTOR, OptionalADayTimeDurationTypeComputer.INSTANCE);
+        addFunction(EDIT_DISTANCE, AInt32TypeComputer.INSTANCE);
+        addFunction(EDIT_DISTANCE_CHECK, OrderedListOfAnyTypeComputer.INSTANCE);
+        addPrivateFunction(EDIT_DISTANCE_STRING_IS_FILTERABLE, ABooleanTypeComputer.INSTANCE);
+        addPrivateFunction(EDIT_DISTANCE_LIST_IS_FILTERABLE, ABooleanTypeComputer.INSTANCE);
+        addPrivateFunction(EMBED_TYPE, new IResultTypeComputer() {
             @Override
             public IAType computeType(ILogicalExpression expression, IVariableTypeEnvironment env,
                     IMetadataProvider<?, ?> mp) throws AlgebricksException {
                 return (IAType) BuiltinType.ANY;
             }
         });
-        add(EMPTY_STREAM, ABooleanTypeComputer.INSTANCE);
-        add(ENDS_WITH, ABooleanTypeComputer.INSTANCE);
+        addPrivateFunction(EMPTY_STREAM, ABooleanTypeComputer.INSTANCE);
+        addFunction(ENDS_WITH, ABooleanTypeComputer.INSTANCE);
         // add(FIELD_ACCESS, NonTaggedFieldAccessByNameResultType.INSTANCE);
-        add(FIELD_ACCESS_BY_INDEX, FieldAccessByIndexResultType.INSTANCE);
-        add(FIELD_ACCESS_BY_NAME, NonTaggedFieldAccessByNameResultType.INSTANCE);
-        add(FLOAT_CONSTRUCTOR, OptionalAFloatTypeComputer.INSTANCE);
-        add(FUZZY_EQ, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(GET_HANDLE, null); // TODO
-        add(GET_ITEM, NonTaggedGetItemResultType.INSTANCE);
-        add(GET_DATA, null); // TODO
-        add(GLOBAL_AVG, OptionalADoubleTypeComputer.INSTANCE);
-        add(GRAM_TOKENS, OrderedListOfAStringTypeComputer.INSTANCE);
-        add(GLOBAL_AVG, OptionalADoubleTypeComputer.INSTANCE);
-        add(HASHED_GRAM_TOKENS, OrderedListOfAInt32TypeComputer.INSTANCE);
-        add(HASHED_WORD_TOKENS, OrderedListOfAInt32TypeComputer.INSTANCE);
-        add(INDEX_SEARCH, new IResultTypeComputer() {
+        addPrivateFunction(FIELD_ACCESS_BY_INDEX, FieldAccessByIndexResultType.INSTANCE);
+        addPrivateFunction(FIELD_ACCESS_BY_NAME, NonTaggedFieldAccessByNameResultType.INSTANCE);
+        addFunction(FLOAT_CONSTRUCTOR, OptionalAFloatTypeComputer.INSTANCE);
+        addPrivateFunction(FUZZY_EQ, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addPrivateFunction(GET_HANDLE, null); // TODO
+        addPrivateFunction(GET_ITEM, NonTaggedGetItemResultType.INSTANCE);
+        addPrivateFunction(GET_DATA, null); // TODO
+        addPrivateFunction(GLOBAL_AVG, OptionalADoubleTypeComputer.INSTANCE);
+        addPrivateFunction(GRAM_TOKENS, OrderedListOfAStringTypeComputer.INSTANCE);
+        addFunction(GLOBAL_AVG, OptionalADoubleTypeComputer.INSTANCE);
+        addFunction(HASHED_GRAM_TOKENS, OrderedListOfAInt32TypeComputer.INSTANCE);
+        addPrivateFunction(HASHED_WORD_TOKENS, OrderedListOfAInt32TypeComputer.INSTANCE);
+        addPrivateFunction(INDEX_SEARCH, new IResultTypeComputer() {
 
             @Override
             public IAType computeType(ILogicalExpression expression, IVariableTypeEnvironment env,
@@ -673,95 +651,95 @@
                 return BuiltinType.ANY; // TODO
             }
         });
-        add(INT8_CONSTRUCTOR, OptionalAInt8TypeComputer.INSTANCE);
-        add(INT16_CONSTRUCTOR, OptionalAInt16TypeComputer.INSTANCE);
-        add(INT32_CONSTRUCTOR, OptionalAInt32TypeComputer.INSTANCE);
-        add(INT64_CONSTRUCTOR, OptionalAInt64TypeComputer.INSTANCE);
-        add(LEN, OptionalAInt32TypeComputer.INSTANCE);
-        add(LIKE, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
-        add(LINE_CONSTRUCTOR, OptionalALineTypeComputer.INSTANCE);
-        add(LISTIFY, OrderedListConstructorResultType.INSTANCE);
-        add(LOCAL_AVG, NonTaggedLocalAvgTypeComputer.INSTANCE);
-        add(MAKE_FIELD_INDEX_HANDLE, null); // TODO
-        add(MAKE_FIELD_NAME_HANDLE, null); // TODO
-        add(MAX, NonTaggedSumTypeComputer.INSTANCE);
-        add(LOCAL_MAX, NonTaggedSumTypeComputer.INSTANCE);
-        add(MIN, NonTaggedSumTypeComputer.INSTANCE);
-        add(LOCAL_MIN, NonTaggedSumTypeComputer.INSTANCE);
-        add(NON_EMPTY_STREAM, ABooleanTypeComputer.INSTANCE);
-        add(NULL_CONSTRUCTOR, ANullTypeComputer.INSTANCE);
-        add(NUMERIC_UNARY_MINUS, NonTaggedUnaryMinusTypeComputer.INSTANCE);
-        add(NUMERIC_SUBTRACT, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
-        add(NUMERIC_MULTIPLY, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
-        add(NUMERIC_DIVIDE, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
-        add(NUMERIC_MOD, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
-        add(NUMERIC_IDIV, AInt32TypeComputer.INSTANCE);
+        addFunction(INT8_CONSTRUCTOR, OptionalAInt8TypeComputer.INSTANCE);
+        addFunction(INT16_CONSTRUCTOR, OptionalAInt16TypeComputer.INSTANCE);
+        addFunction(INT32_CONSTRUCTOR, OptionalAInt32TypeComputer.INSTANCE);
+        addFunction(INT64_CONSTRUCTOR, OptionalAInt64TypeComputer.INSTANCE);
+        addFunction(LEN, OptionalAInt32TypeComputer.INSTANCE);
+        addFunction(LIKE, BinaryBooleanOrNullFunctionTypeComputer.INSTANCE);
+        addFunction(LINE_CONSTRUCTOR, OptionalALineTypeComputer.INSTANCE);
+        addPrivateFunction(LISTIFY, OrderedListConstructorResultType.INSTANCE);
+        addPrivateFunction(LOCAL_AVG, NonTaggedLocalAvgTypeComputer.INSTANCE);
+        addPrivateFunction(MAKE_FIELD_INDEX_HANDLE, null); // TODO
+        addPrivateFunction(MAKE_FIELD_NAME_HANDLE, null); // TODO
+        addPrivateFunction(MAX, NonTaggedSumTypeComputer.INSTANCE);
+        addPrivateFunction(LOCAL_MAX, NonTaggedSumTypeComputer.INSTANCE);
+        addPrivateFunction(MIN, NonTaggedSumTypeComputer.INSTANCE);
+        addPrivateFunction(LOCAL_MIN, NonTaggedSumTypeComputer.INSTANCE);
+        addPrivateFunction(NON_EMPTY_STREAM, ABooleanTypeComputer.INSTANCE);
+        addFunction(NULL_CONSTRUCTOR, ANullTypeComputer.INSTANCE);
+        addFunction(NUMERIC_UNARY_MINUS, NonTaggedUnaryMinusTypeComputer.INSTANCE);
+        addFunction(NUMERIC_SUBTRACT, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
+        addFunction(NUMERIC_MULTIPLY, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
+        addFunction(NUMERIC_DIVIDE, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
+        addFunction(NUMERIC_MOD, NonTaggedNumericAddSubMulDivTypeComputer.INSTANCE);
+        addFunction(NUMERIC_IDIV, AInt32TypeComputer.INSTANCE);
 
-        add(NUMERIC_ABS, NonTaggedNumericUnaryFunctionTypeComputer.INSTANCE);
-        add(NUMERIC_CEILING, NonTaggedNumericUnaryFunctionTypeComputer.INSTANCE);
-        add(NUMERIC_FLOOR, NonTaggedNumericUnaryFunctionTypeComputer.INSTANCE);
-        add(NUMERIC_ROUND, NonTaggedNumericUnaryFunctionTypeComputer.INSTANCE);
-        add(NUMERIC_ROUND_HALF_TO_EVEN, NonTaggedNumericUnaryFunctionTypeComputer.INSTANCE);
-        add(NUMERIC_ROUND_HALF_TO_EVEN2, NonTaggedNumericRoundHalfToEven2TypeComputer.INSTANCE);
+        addFunction(NUMERIC_ABS, NonTaggedNumericUnaryFunctionTypeComputer.INSTANCE);
+        addFunction(NUMERIC_CEILING, NonTaggedNumericUnaryFunctionTypeComputer.INSTANCE);
+        addFunction(NUMERIC_FLOOR, NonTaggedNumericUnaryFunctionTypeComputer.INSTANCE);
+        addFunction(NUMERIC_ROUND, NonTaggedNumericUnaryFunctionTypeComputer.INSTANCE);
+        addFunction(NUMERIC_ROUND_HALF_TO_EVEN, NonTaggedNumericUnaryFunctionTypeComputer.INSTANCE);
+        addFunction(NUMERIC_ROUND_HALF_TO_EVEN2, NonTaggedNumericRoundHalfToEven2TypeComputer.INSTANCE);
 
-        add(STRING_TO_CODEPOINT, OrderedListOfAInt32TypeComputer.INSTANCE);
-        add(CODEPOINT_TO_STRING, AStringTypeComputer.INSTANCE);
-        add(STRING_CONCAT, OptionalAStringTypeComputer.INSTANCE);
-        add(SUBSTRING2, Substring2TypeComputer.INSTANCE);
-        add(STRING_LENGTH, UnaryStringInt32OrNullTypeComputer.INSTANCE);
-        add(STRING_LOWERCASE, UnaryStringOrNullTypeComputer.INSTANCE);
-        add(STRING_START_WITH, BinaryStringBoolOrNullTypeComputer.INSTANCE);
-        add(STRING_END_WITH, BinaryStringBoolOrNullTypeComputer.INSTANCE);
-        add(STRING_MATCHES, BinaryStringBoolOrNullTypeComputer.INSTANCE);
-        add(STRING_MATCHES_WITH_FLAG, TripleStringBoolOrNullTypeComputer.INSTANCE);
-        add(STRING_REPLACE, TripleStringStringOrNullTypeComputer.INSTANCE);
-        add(STRING_REPLACE_WITH_FLAG, QuadStringStringOrNullTypeComputer.INSTANCE);
-        add(SUBSTRING_BEFORE, BinaryStringStringOrNullTypeComputer.INSTANCE);
-        add(SUBSTRING_AFTER, BinaryStringStringOrNullTypeComputer.INSTANCE);
-        add(STRING_EQUAL, BinaryStringBoolOrNullTypeComputer.INSTANCE);
-        add(STRING_JOIN, AStringTypeComputer.INSTANCE);
+        addFunction(STRING_TO_CODEPOINT, OrderedListOfAInt32TypeComputer.INSTANCE);
+        addFunction(CODEPOINT_TO_STRING, AStringTypeComputer.INSTANCE);
+        addFunction(STRING_CONCAT, OptionalAStringTypeComputer.INSTANCE);
+        addFunction(SUBSTRING2, Substring2TypeComputer.INSTANCE);
+        addFunction(STRING_LENGTH, UnaryStringInt32OrNullTypeComputer.INSTANCE);
+        addFunction(STRING_LOWERCASE, UnaryStringOrNullTypeComputer.INSTANCE);
+        addFunction(STRING_START_WITH, BinaryStringBoolOrNullTypeComputer.INSTANCE);
+        addFunction(STRING_END_WITH, BinaryStringBoolOrNullTypeComputer.INSTANCE);
+        addFunction(STRING_MATCHES, BinaryStringBoolOrNullTypeComputer.INSTANCE);
+        addFunction(STRING_MATCHES_WITH_FLAG, TripleStringBoolOrNullTypeComputer.INSTANCE);
+        addFunction(STRING_REPLACE, TripleStringStringOrNullTypeComputer.INSTANCE);
+        addFunction(STRING_REPLACE_WITH_FLAG, QuadStringStringOrNullTypeComputer.INSTANCE);
+        addFunction(SUBSTRING_BEFORE, BinaryStringStringOrNullTypeComputer.INSTANCE);
+        addFunction(SUBSTRING_AFTER, BinaryStringStringOrNullTypeComputer.INSTANCE);
+        addPrivateFunction(STRING_EQUAL, BinaryStringBoolOrNullTypeComputer.INSTANCE);
+        addFunction(STRING_JOIN, AStringTypeComputer.INSTANCE);
 
-        add(OPEN_RECORD_CONSTRUCTOR, OpenRecordConstructorResultType.INSTANCE);
-        add(ORDERED_LIST_CONSTRUCTOR, OrderedListConstructorResultType.INSTANCE);
-        add(POINT_CONSTRUCTOR, OptionalAPointTypeComputer.INSTANCE);
-        add(POINT3D_CONSTRUCTOR, OptionalAPoint3DTypeComputer.INSTANCE);
-        add(POLYGON_CONSTRUCTOR, OptionalAPolygonTypeComputer.INSTANCE);
-        add(PREFIX_LEN_JACCARD, AInt32TypeComputer.INSTANCE);
-        add(RANGE, AInt32TypeComputer.INSTANCE);
-        add(RECTANGLE_CONSTRUCTOR, OptionalARectangleTypeComputer.INSTANCE);
+        addPrivateFunction(OPEN_RECORD_CONSTRUCTOR, OpenRecordConstructorResultType.INSTANCE);
+        addPrivateFunction(ORDERED_LIST_CONSTRUCTOR, OrderedListConstructorResultType.INSTANCE);
+        addFunction(POINT_CONSTRUCTOR, OptionalAPointTypeComputer.INSTANCE);
+        addFunction(POINT3D_CONSTRUCTOR, OptionalAPoint3DTypeComputer.INSTANCE);
+        addFunction(POLYGON_CONSTRUCTOR, OptionalAPolygonTypeComputer.INSTANCE);
+        addPrivateFunction(PREFIX_LEN_JACCARD, AInt32TypeComputer.INSTANCE);
+        addFunction(RANGE, AInt32TypeComputer.INSTANCE);
+        addFunction(RECTANGLE_CONSTRUCTOR, OptionalARectangleTypeComputer.INSTANCE);
         // add(RECORD_TYPE_CONSTRUCTOR, null);
-        add(SCALAR_AVG, ScalarVersionOfAggregateResultType.INSTANCE);
-        add(SCALAR_COUNT, AInt32TypeComputer.INSTANCE);
-        add(SCALAR_GLOBAL_AVG, ScalarVersionOfAggregateResultType.INSTANCE);
-        add(SCALAR_LOCAL_AVG, ScalarVersionOfAggregateResultType.INSTANCE);
-        add(SCALAR_MAX, ScalarVersionOfAggregateResultType.INSTANCE);
-        add(SCALAR_MIN, ScalarVersionOfAggregateResultType.INSTANCE);
-        add(SCALAR_SUM, ScalarVersionOfAggregateResultType.INSTANCE);
-        add(SCAN_COLLECTION, NonTaggedCollectionMemberResultType.INSTANCE);
-        add(SERIAL_AVG, OptionalADoubleTypeComputer.INSTANCE);
-        add(SERIAL_COUNT, AInt32TypeComputer.INSTANCE);
-        add(SERIAL_GLOBAL_AVG, OptionalADoubleTypeComputer.INSTANCE);
-        add(SERIAL_LOCAL_AVG, NonTaggedLocalAvgTypeComputer.INSTANCE);
-        add(SERIAL_SUM, NonTaggedSumTypeComputer.INSTANCE);
-        add(SERIAL_LOCAL_SUM, NonTaggedSumTypeComputer.INSTANCE);
-        add(SIMILARITY_JACCARD, AFloatTypeComputer.INSTANCE);
-        add(SIMILARITY_JACCARD_CHECK, OrderedListOfAnyTypeComputer.INSTANCE);
-        add(SIMILARITY_JACCARD_SORTED, AFloatTypeComputer.INSTANCE);
-        add(SIMILARITY_JACCARD_SORTED_CHECK, OrderedListOfAnyTypeComputer.INSTANCE);
-        add(SIMILARITY_JACCARD_PREFIX, AFloatTypeComputer.INSTANCE);
-        add(SIMILARITY_JACCARD_PREFIX_CHECK, OrderedListOfAnyTypeComputer.INSTANCE);
-        add(SPATIAL_AREA, ADoubleTypeComputer.INSTANCE);
-        add(SPATIAL_CELL, ARectangleTypeComputer.INSTANCE);
-        add(SPATIAL_DISTANCE, ADoubleTypeComputer.INSTANCE);
-        add(SPATIAL_INTERSECT, ABooleanTypeComputer.INSTANCE);
-        add(GET_POINT_X_COORDINATE_ACCESSOR, ADoubleTypeComputer.INSTANCE);
-        add(GET_POINT_Y_COORDINATE_ACCESSOR, ADoubleTypeComputer.INSTANCE);
-        add(GET_CIRCLE_RADIUS_ACCESSOR, ADoubleTypeComputer.INSTANCE);
-        add(GET_CIRCLE_CENTER_ACCESSOR, APointTypeComputer.INSTANCE);
-        add(GET_POINTS_LINE_RECTANGLE_POLYGON_ACCESSOR, OrderedListOfAPointTypeComputer.INSTANCE);
-        add(STARTS_WITH, ABooleanTypeComputer.INSTANCE);
-        add(STRING_CONSTRUCTOR, OptionalAStringTypeComputer.INSTANCE);
-        add(SUBSET_COLLECTION, new IResultTypeComputer() {
+        addFunction(SCALAR_AVG, ScalarVersionOfAggregateResultType.INSTANCE);
+        addFunction(SCALAR_COUNT, AInt32TypeComputer.INSTANCE);
+        addPrivateFunction(SCALAR_GLOBAL_AVG, ScalarVersionOfAggregateResultType.INSTANCE);
+        addPrivateFunction(SCALAR_LOCAL_AVG, ScalarVersionOfAggregateResultType.INSTANCE);
+        addFunction(SCALAR_MAX, ScalarVersionOfAggregateResultType.INSTANCE);
+        addFunction(SCALAR_MIN, ScalarVersionOfAggregateResultType.INSTANCE);
+        addFunction(SCALAR_SUM, ScalarVersionOfAggregateResultType.INSTANCE);
+        addPrivateFunction(SCAN_COLLECTION, NonTaggedCollectionMemberResultType.INSTANCE);
+        addPrivateFunction(SERIAL_AVG, OptionalADoubleTypeComputer.INSTANCE);
+        addPrivateFunction(SERIAL_COUNT, AInt32TypeComputer.INSTANCE);
+        addPrivateFunction(SERIAL_GLOBAL_AVG, OptionalADoubleTypeComputer.INSTANCE);
+        addPrivateFunction(SERIAL_LOCAL_AVG, NonTaggedLocalAvgTypeComputer.INSTANCE);
+        addPrivateFunction(SERIAL_SUM, NonTaggedSumTypeComputer.INSTANCE);
+        addPrivateFunction(SERIAL_LOCAL_SUM, NonTaggedSumTypeComputer.INSTANCE);
+        addFunction(SIMILARITY_JACCARD, AFloatTypeComputer.INSTANCE);
+        addFunction(SIMILARITY_JACCARD_CHECK, OrderedListOfAnyTypeComputer.INSTANCE);
+        addPrivateFunction(SIMILARITY_JACCARD_SORTED, AFloatTypeComputer.INSTANCE);
+        addPrivateFunction(SIMILARITY_JACCARD_SORTED_CHECK, OrderedListOfAnyTypeComputer.INSTANCE);
+        addPrivateFunction(SIMILARITY_JACCARD_PREFIX, AFloatTypeComputer.INSTANCE);
+        addPrivateFunction(SIMILARITY_JACCARD_PREFIX_CHECK, OrderedListOfAnyTypeComputer.INSTANCE);
+        addFunction(SPATIAL_AREA, ADoubleTypeComputer.INSTANCE);
+        addFunction(SPATIAL_CELL, ARectangleTypeComputer.INSTANCE);
+        addFunction(SPATIAL_DISTANCE, ADoubleTypeComputer.INSTANCE);
+        addFunction(SPATIAL_INTERSECT, ABooleanTypeComputer.INSTANCE);
+        addFunction(GET_POINT_X_COORDINATE_ACCESSOR, ADoubleTypeComputer.INSTANCE);
+        addFunction(GET_POINT_Y_COORDINATE_ACCESSOR, ADoubleTypeComputer.INSTANCE);
+        addFunction(GET_CIRCLE_RADIUS_ACCESSOR, ADoubleTypeComputer.INSTANCE);
+        addFunction(GET_CIRCLE_CENTER_ACCESSOR, APointTypeComputer.INSTANCE);
+        addFunction(GET_POINTS_LINE_RECTANGLE_POLYGON_ACCESSOR, OrderedListOfAPointTypeComputer.INSTANCE);
+        addFunction(STARTS_WITH, ABooleanTypeComputer.INSTANCE);
+        addFunction(STRING_CONSTRUCTOR, OptionalAStringTypeComputer.INSTANCE);
+        addPrivateFunction(SUBSET_COLLECTION, new IResultTypeComputer() {
 
             @Override
             public IAType computeType(ILogicalExpression expression, IVariableTypeEnvironment env,
@@ -798,20 +776,20 @@
                 }
             }
         });
-        add(SUBSTRING, SubstringTypeComputer.INSTANCE);
-        add(SUM, NonTaggedSumTypeComputer.INSTANCE);
-        add(LOCAL_SUM, NonTaggedSumTypeComputer.INSTANCE);
-        add(SWITCH_CASE, NonTaggedSwitchCaseComputer.INSTANCE);
-        add(REG_EXP, ABooleanTypeComputer.INSTANCE);
-        add(INJECT_FAILURE, InjectFailureTypeComputer.INSTANCE);
-        add(CAST_RECORD, CastRecordResultTypeComputer.INSTANCE);
-        add(CAST_LIST, CastListResultTypeComputer.INSTANCE);
+        addFunction(SUBSTRING, SubstringTypeComputer.INSTANCE);
+        addPrivateFunction(SUM, NonTaggedSumTypeComputer.INSTANCE);
+        addPrivateFunction(LOCAL_SUM, NonTaggedSumTypeComputer.INSTANCE);
+        addFunction(SWITCH_CASE, NonTaggedSwitchCaseComputer.INSTANCE);
+        addPrivateFunction(REG_EXP, ABooleanTypeComputer.INSTANCE);
+        addFunction(INJECT_FAILURE, InjectFailureTypeComputer.INSTANCE);
+        addPrivateFunction(CAST_RECORD, CastRecordResultTypeComputer.INSTANCE);
+        addFunction(CAST_LIST, CastListResultTypeComputer.INSTANCE);
 
-        add(TID, AInt32TypeComputer.INSTANCE);
-        add(TIME_CONSTRUCTOR, OptionalATimeTypeComputer.INSTANCE);
-        add(TYPE_OF, null); // TODO
-        add(UNORDERED_LIST_CONSTRUCTOR, UnorderedListConstructorResultType.INSTANCE);
-        add(WORD_TOKENS, new IResultTypeComputer() {
+        addFunction(TID, AInt32TypeComputer.INSTANCE);
+        addFunction(TIME_CONSTRUCTOR, OptionalATimeTypeComputer.INSTANCE);
+        addFunction(TYPE_OF, null); // TODO
+        addPrivateFunction(UNORDERED_LIST_CONSTRUCTOR, UnorderedListConstructorResultType.INSTANCE);
+        addFunction(WORD_TOKENS, new IResultTypeComputer() {
 
             @Override
             public IAType computeType(ILogicalExpression expression, IVariableTypeEnvironment env,
@@ -821,68 +799,68 @@
         });
 
         // temporal type accessors
-        add(ACCESSOR_TEMPORAL_YEAR, OptionalAInt32TypeComputer.INSTANCE);
-        add(ACCESSOR_TEMPORAL_MONTH, OptionalAInt32TypeComputer.INSTANCE);
-        add(ACCESSOR_TEMPORAL_DAY, OptionalAInt32TypeComputer.INSTANCE);
-        add(ACCESSOR_TEMPORAL_HOUR, OptionalAInt32TypeComputer.INSTANCE);
-        add(ACCESSOR_TEMPORAL_MIN, OptionalAInt32TypeComputer.INSTANCE);
-        add(ACCESSOR_TEMPORAL_SEC, OptionalAInt32TypeComputer.INSTANCE);
-        add(ACCESSOR_TEMPORAL_MILLISEC, OptionalAInt32TypeComputer.INSTANCE);
-        add(ACCESSOR_TEMPORAL_INTERVAL_START, OptionalATemporalInstanceTypeComputer.INSTANCE);
-        add(ACCESSOR_TEMPORAL_INTERVAL_END, OptionalATemporalInstanceTypeComputer.INSTANCE);
+        addFunction(ACCESSOR_TEMPORAL_YEAR, OptionalAInt32TypeComputer.INSTANCE);
+        addFunction(ACCESSOR_TEMPORAL_MONTH, OptionalAInt32TypeComputer.INSTANCE);
+        addFunction(ACCESSOR_TEMPORAL_DAY, OptionalAInt32TypeComputer.INSTANCE);
+        addFunction(ACCESSOR_TEMPORAL_HOUR, OptionalAInt32TypeComputer.INSTANCE);
+        addFunction(ACCESSOR_TEMPORAL_MIN, OptionalAInt32TypeComputer.INSTANCE);
+        addFunction(ACCESSOR_TEMPORAL_SEC, OptionalAInt32TypeComputer.INSTANCE);
+        addFunction(ACCESSOR_TEMPORAL_MILLISEC, OptionalAInt32TypeComputer.INSTANCE);
+        addFunction(ACCESSOR_TEMPORAL_INTERVAL_START, OptionalATemporalInstanceTypeComputer.INSTANCE);
+        addFunction(ACCESSOR_TEMPORAL_INTERVAL_END, OptionalATemporalInstanceTypeComputer.INSTANCE);
 
         // temporal functions
-        add(DATE_FROM_UNIX_TIME_IN_DAYS, OptionalADateTypeComputer.INSTANCE);
-        add(DATE_FROM_DATETIME, OptionalADateTypeComputer.INSTANCE);
-        add(ADD_DATE_DURATION, OptionalADateTypeComputer.INSTANCE);
-        add(SUBTRACT_DATE, OptionalADurationTypeComputer.INSTANCE);
-        add(TIME_FROM_UNIX_TIME_IN_MS, OptionalATimeTypeComputer.INSTANCE);
-        add(TIME_FROM_DATETIME, OptionalATimeTypeComputer.INSTANCE);
-        add(SUBTRACT_TIME, OptionalADurationTypeComputer.INSTANCE);
-        add(ADD_TIME_DURATION, OptionalATimeTypeComputer.INSTANCE);
-        add(DATETIME_FROM_DATE_TIME, OptionalADateTimeTypeComputer.INSTANCE);
-        add(DATETIME_FROM_UNIX_TIME_IN_MS, OptionalADateTimeTypeComputer.INSTANCE);
-        add(SUBTRACT_DATETIME, OptionalADurationTypeComputer.INSTANCE);
-        add(ADD_DATETIME_DURATION, OptionalADateTimeTypeComputer.INSTANCE);
-        add(CALENDAR_DURATION_FROM_DATETIME, OptionalADurationTypeComputer.INSTANCE);
-        add(CALENDAR_DURATION_FROM_DATE, OptionalADurationTypeComputer.INSTANCE);
-        add(ADJUST_DATETIME_FOR_TIMEZONE, OptionalAStringTypeComputer.INSTANCE);
-        add(ADJUST_TIME_FOR_TIMEZONE, OptionalAStringTypeComputer.INSTANCE);
-        add(INTERVAL_BEFORE, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_AFTER, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_MEETS, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_MET_BY, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_OVERLAPS, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_OVERLAPPED_BY, OptionalABooleanTypeComputer.INSTANCE);
-        add(OVERLAP, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_STARTS, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_STARTED_BY, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_COVERS, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_COVERED_BY, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_ENDS, OptionalABooleanTypeComputer.INSTANCE);
-        add(INTERVAL_ENDED_BY, OptionalABooleanTypeComputer.INSTANCE);
-        add(CURRENT_DATE, ADateTypeComputer.INSTANCE);
-        add(CURRENT_TIME, ATimeTypeComputer.INSTANCE);
-        add(CURRENT_DATETIME, ADateTimeTypeComputer.INSTANCE);
-        add(DAY_TIME_DURATION_GREATER_THAN, OptionalABooleanTypeComputer.INSTANCE);
-        add(DAY_TIME_DURATION_LESS_THAN, OptionalABooleanTypeComputer.INSTANCE);
-        add(YEAR_MONTH_DURATION_GREATER_THAN, OptionalABooleanTypeComputer.INSTANCE);
-        add(YEAR_MONTH_DURATION_LESS_THAN, OptionalABooleanTypeComputer.INSTANCE);
-        add(DURATION_EQUAL, OptionalABooleanTypeComputer.INSTANCE);
-        add(DURATION_FROM_MONTHS, OptionalADurationTypeComputer.INSTANCE);
-        add(DURATION_FROM_MILLISECONDS, OptionalADurationTypeComputer.INSTANCE);
-        add(MONTHS_FROM_YEAR_MONTH_DURATION, OptionalAInt32TypeComputer.INSTANCE);
-        add(MILLISECONDS_FROM_DAY_TIME_DURATION, OptionalAInt64TypeComputer.INSTANCE);
-        add(GET_DAY_TIME_DURATION, OptionalADayTimeDurationTypeComputer.INSTANCE);
-        add(GET_YEAR_MONTH_DURATION, OptionalAYearMonthDurationTypeComputer.INSTANCE);
+        addFunction(DATE_FROM_UNIX_TIME_IN_DAYS, OptionalADateTypeComputer.INSTANCE);
+        addFunction(DATE_FROM_DATETIME, OptionalADateTypeComputer.INSTANCE);
+        addFunction(ADD_DATE_DURATION, OptionalADateTypeComputer.INSTANCE);
+        addFunction(SUBTRACT_DATE, OptionalADurationTypeComputer.INSTANCE);
+        addFunction(TIME_FROM_UNIX_TIME_IN_MS, OptionalATimeTypeComputer.INSTANCE);
+        addFunction(TIME_FROM_DATETIME, OptionalATimeTypeComputer.INSTANCE);
+        addFunction(SUBTRACT_TIME, OptionalADurationTypeComputer.INSTANCE);
+        addFunction(ADD_TIME_DURATION, OptionalATimeTypeComputer.INSTANCE);
+        addFunction(DATETIME_FROM_DATE_TIME, OptionalADateTimeTypeComputer.INSTANCE);
+        addFunction(DATETIME_FROM_UNIX_TIME_IN_MS, OptionalADateTimeTypeComputer.INSTANCE);
+        addFunction(SUBTRACT_DATETIME, OptionalADurationTypeComputer.INSTANCE);
+        addFunction(ADD_DATETIME_DURATION, OptionalADateTimeTypeComputer.INSTANCE);
+        addFunction(CALENDAR_DURATION_FROM_DATETIME, OptionalADurationTypeComputer.INSTANCE);
+        addFunction(CALENDAR_DURATION_FROM_DATE, OptionalADurationTypeComputer.INSTANCE);
+        addFunction(ADJUST_DATETIME_FOR_TIMEZONE, OptionalAStringTypeComputer.INSTANCE);
+        addFunction(ADJUST_TIME_FOR_TIMEZONE, OptionalAStringTypeComputer.INSTANCE);
+        addFunction(INTERVAL_BEFORE, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_AFTER, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_MEETS, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_MET_BY, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_OVERLAPS, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_OVERLAPPED_BY, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(OVERLAP, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_STARTS, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_STARTED_BY, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_COVERS, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_COVERED_BY, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_ENDS, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(INTERVAL_ENDED_BY, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(CURRENT_DATE, ADateTypeComputer.INSTANCE);
+        addFunction(CURRENT_TIME, ATimeTypeComputer.INSTANCE);
+        addFunction(CURRENT_DATETIME, ADateTimeTypeComputer.INSTANCE);
+        addFunction(DAY_TIME_DURATION_GREATER_THAN, OptionalABooleanTypeComputer.INSTANCE);
+        addPrivateFunction(DAY_TIME_DURATION_LESS_THAN, OptionalABooleanTypeComputer.INSTANCE);
+        addPrivateFunction(YEAR_MONTH_DURATION_GREATER_THAN, OptionalABooleanTypeComputer.INSTANCE);
+        addPrivateFunction(YEAR_MONTH_DURATION_LESS_THAN, OptionalABooleanTypeComputer.INSTANCE);
+        addPrivateFunction(DURATION_EQUAL, OptionalABooleanTypeComputer.INSTANCE);
+        addFunction(DURATION_FROM_MONTHS, OptionalADurationTypeComputer.INSTANCE);
+        addFunction(DURATION_FROM_MILLISECONDS, OptionalADurationTypeComputer.INSTANCE);
+        addFunction(MONTHS_FROM_YEAR_MONTH_DURATION, OptionalAInt32TypeComputer.INSTANCE);
+        addFunction(MILLISECONDS_FROM_DAY_TIME_DURATION, OptionalAInt64TypeComputer.INSTANCE);
+        addFunction(GET_DAY_TIME_DURATION, OptionalADayTimeDurationTypeComputer.INSTANCE);
+        addFunction(GET_YEAR_MONTH_DURATION, OptionalAYearMonthDurationTypeComputer.INSTANCE);
 
         // interval constructors
-        add(INTERVAL_CONSTRUCTOR_DATE, OptionalAIntervalTypeComputer.INSTANCE);
-        add(INTERVAL_CONSTRUCTOR_TIME, OptionalAIntervalTypeComputer.INSTANCE);
-        add(INTERVAL_CONSTRUCTOR_DATETIME, OptionalAIntervalTypeComputer.INSTANCE);
-        add(INTERVAL_CONSTRUCTOR_START_FROM_DATE, OptionalAIntervalTypeComputer.INSTANCE);
-        add(INTERVAL_CONSTRUCTOR_START_FROM_DATETIME, OptionalAIntervalTypeComputer.INSTANCE);
-        add(INTERVAL_CONSTRUCTOR_START_FROM_TIME, OptionalAIntervalTypeComputer.INSTANCE);
+        addFunction(INTERVAL_CONSTRUCTOR_DATE, OptionalAIntervalTypeComputer.INSTANCE);
+        addFunction(INTERVAL_CONSTRUCTOR_TIME, OptionalAIntervalTypeComputer.INSTANCE);
+        addFunction(INTERVAL_CONSTRUCTOR_DATETIME, OptionalAIntervalTypeComputer.INSTANCE);
+        addFunction(INTERVAL_CONSTRUCTOR_START_FROM_DATE, OptionalAIntervalTypeComputer.INSTANCE);
+        addFunction(INTERVAL_CONSTRUCTOR_START_FROM_DATETIME, OptionalAIntervalTypeComputer.INSTANCE);
+        addFunction(INTERVAL_CONSTRUCTOR_START_FROM_TIME, OptionalAIntervalTypeComputer.INSTANCE);
 
         String metadataFunctionLoaderClassName = "edu.uci.ics.asterix.metadata.functions.MetadataBuiltinFunctions";
         try {
@@ -976,8 +954,27 @@
         return datasetFunctions.contains(getAsterixFunctionInfo(fi));
     }
 
-    public static boolean isBuiltinCompilerFunction(FunctionIdentifier fi) {
-        return builtinFunctionsSet.keySet().contains(getAsterixFunctionInfo(fi));
+    public static boolean isBuiltinCompilerFunction(FunctionIdentifier fi, boolean includePrivateFunctions) {
+        return builtinPublicFunctionsSet.keySet().contains(getAsterixFunctionInfo(fi));
+    }
+
+    public static boolean isBuiltinCompilerFunction(FunctionSignature signature, boolean includePrivateFunctions) {
+
+        FunctionIdentifier fi = new FunctionIdentifier(FunctionConstants.ASTERIX_NS, signature.getName(),
+                signature.getArity());
+        IFunctionInfo finfo = getAsterixFunctionInfo(fi);
+        if (builtinPublicFunctionsSet.keySet().contains(finfo)
+                || (includePrivateFunctions && builtinPrivateFunctionsSet.keySet().contains(finfo))) {
+            return true;
+        }
+        fi = new FunctionIdentifier(AlgebricksBuiltinFunctions.ALGEBRICKS_NS, signature.getName(), signature.getArity());
+        finfo = getAsterixFunctionInfo(fi);
+        if (builtinPublicFunctionsSet.keySet().contains(finfo)
+                || (includePrivateFunctions && builtinPrivateFunctionsSet.keySet().contains(finfo))) {
+            return true;
+        }
+
+        return false;
     }
 
     public static boolean isBuiltinAggregateFunction(FunctionIdentifier fi) {
@@ -1062,9 +1059,16 @@
         return finfo == null ? null : finfo.getFunctionIdentifier();
     }
 
-    public static void add(FunctionIdentifier fi, IResultTypeComputer typeComputer) {
+    public static void addFunction(FunctionIdentifier fi, IResultTypeComputer typeComputer) {
         IFunctionInfo functionInfo = getAsterixFunctionInfo(fi);
-        builtinFunctionsSet.put(functionInfo, functionInfo);
+        builtinPublicFunctionsSet.put(functionInfo, functionInfo);
+        funTypeComputer.put(functionInfo, typeComputer);
+        registeredFunctions.put(fi);
+    }
+
+    public static void addPrivateFunction(FunctionIdentifier fi, IResultTypeComputer typeComputer) {
+        IFunctionInfo functionInfo = getAsterixFunctionInfo(fi);
+        builtinPrivateFunctionsSet.put(functionInfo, functionInfo);
         funTypeComputer.put(functionInfo, typeComputer);
         registeredFunctions.put(fi);
     }
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/typecomputer/impl/UnaryStringInt32OrNullTypeComputer.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/typecomputer/impl/UnaryStringInt32OrNullTypeComputer.java
index 2d3018d..7b82c41 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/typecomputer/impl/UnaryStringInt32OrNullTypeComputer.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/typecomputer/impl/UnaryStringInt32OrNullTypeComputer.java
@@ -1,6 +1,5 @@
 package edu.uci.ics.asterix.om.typecomputer.impl;
 
-
 import java.util.ArrayList;
 import java.util.List;
 
@@ -17,20 +16,21 @@
 import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IMetadataProvider;
 
 /**
- *
  * @author Xiaoyu Ma
  */
-public class UnaryStringInt32OrNullTypeComputer implements IResultTypeComputer  {   
-    
+public class UnaryStringInt32OrNullTypeComputer implements IResultTypeComputer {
+
     public static final UnaryStringInt32OrNullTypeComputer INSTANCE = new UnaryStringInt32OrNullTypeComputer();
-    private UnaryStringInt32OrNullTypeComputer() {}
-    
+
+    private UnaryStringInt32OrNullTypeComputer() {
+    }
+
     @Override
     public IAType computeType(ILogicalExpression expression, IVariableTypeEnvironment env,
             IMetadataProvider<?, ?> metadataProvider) throws AlgebricksException {
         AbstractFunctionCallExpression fce = (AbstractFunctionCallExpression) expression;
-        if(fce.getArguments().isEmpty())
-            throw new AlgebricksException("Wrong Argument Number.");        
+        if (fce.getArguments().isEmpty())
+            throw new AlgebricksException("Wrong Argument Number.");
         ILogicalExpression arg0 = fce.getArguments().get(0).getValue();
         IAType t0;
         try {
@@ -38,21 +38,23 @@
         } catch (AlgebricksException e) {
             throw new AlgebricksException(e);
         }
-        if (t0.getTypeTag() != ATypeTag.NULL &&
-            t0.getTypeTag() != ATypeTag.STRING ) {
+        if (t0.getTypeTag() != ATypeTag.NULL
+                && t0.getTypeTag() != ATypeTag.STRING
+                && (t0.getTypeTag() == ATypeTag.UNION && !((AUnionType) t0).getUnionList()
+                        .contains(BuiltinType.ASTRING))) {
             throw new NotImplementedException("Expects String Type.");
-        }     
-        
+        }
+
         List<IAType> unionList = new ArrayList<IAType>();
         unionList.add(BuiltinType.ANULL);
-        if(t0.getTypeTag() == ATypeTag.NULL) {
+        if (t0.getTypeTag() == ATypeTag.NULL) { 
             return BuiltinType.ANULL;
         }
-        
-        if(t0.getTypeTag() == ATypeTag.STRING) {
+
+        if (t0.getTypeTag() == ATypeTag.STRING || t0.getTypeTag().equals(ATypeTag.UNION)) {
             unionList.add(BuiltinType.AINT32);
-        }        
-        
+        }
+
         return new AUnionType(unionList, "String-length-Result");
-    }      
+    }
 }
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/types/ARecordType.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/types/ARecordType.java
index 037cd29..7d20886 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/types/ARecordType.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/types/ARecordType.java
@@ -254,6 +254,8 @@
                 throw new AlgebricksException("A field with this name  \"" + fieldName + "\" could not be found.");
             }
             switch (fieldType.getTypeTag()) {
+                case INT8:
+                case INT16:
                 case INT32:
                 case INT64:
                 case FLOAT:
@@ -305,6 +307,8 @@
                         case TIME:
                         case DATETIME:
                         case UNION:
+                        case YEARMONTHDURATION:
+                        case DAYTIMEDURATION:
                             break;
                         default:
                             throw new AlgebricksException("The field \"" + fieldName + "\" which is of type "
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/AsterixAppContextInfo.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/AsterixAppContextInfo.java
index e85a72d..81100bf 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/AsterixAppContextInfo.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/AsterixAppContextInfo.java
@@ -57,7 +57,6 @@
         INSTANCE.metadataProperties = new AsterixMetadataProperties(propertiesAccessor);
         INSTANCE.storageProperties = new AsterixStorageProperties(propertiesAccessor);
         INSTANCE.txnProperties = new AsterixTransactionProperties(propertiesAccessor);
-
         Logger.getLogger("edu.uci.ics").setLevel(INSTANCE.externalProperties.getLogLevel());
     }
 
@@ -108,6 +107,4 @@
     public IStorageManagerInterface getStorageManagerInterface() {
         return AsterixRuntimeComponentsProvider.NOINDEX_PROVIDER;
     }
-
-  
 }
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/AsterixClusterProperties.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/AsterixClusterProperties.java
new file mode 100644
index 0000000..bc2a6af
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/AsterixClusterProperties.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.om.util;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * A holder class for properties related to the Asterix cluster.
+ */
+
+public class AsterixClusterProperties {
+
+    private static final Logger LOGGER = Logger.getLogger(AsterixClusterProperties.class.getName());
+
+    private static final String IO_DEVICES = "iodevices";
+
+    public static final AsterixClusterProperties INSTANCE = new AsterixClusterProperties();
+
+    private Map<String, Map<String, String>> ncConfiguration = new HashMap<String, Map<String, String>>();
+
+    private AsterixClusterProperties() {
+    }
+
+    public enum State {
+        ACTIVE,
+        UNUSABLE
+    }
+
+    private State state = State.UNUSABLE;
+
+    public void removeNCConfiguration(String nodeId) {
+        state = State.UNUSABLE;
+        ncConfiguration.remove(nodeId);
+    }
+
+    public void addNCConfiguration(String nodeId, Map<String, String> configuration) {
+        ncConfiguration.put(nodeId, configuration);
+        if (ncConfiguration.keySet().size() == AsterixAppContextInfo.getInstance().getMetadataProperties()
+                .getNodeNames().size()) {
+            state = State.ACTIVE;
+        }
+        if (LOGGER.isLoggable(Level.INFO)) {
+            LOGGER.info(" Registering configuration parameters for node id" + nodeId);
+        }
+    }
+
+    /**
+     * Returns the number of IO devices configured for a Node Controller
+     * 
+     * @param nodeId
+     *            unique identifier of the Node Controller
+     * @return number of IO devices. -1 if the node id is not valid. A node id is not valid
+     *         if it does not correspond to the set of registered Node Controllers.
+     */
+    public int getNumberOfIODevices(String nodeId) {
+        Map<String, String> ncConfig = ncConfiguration.get(nodeId);
+        if (ncConfig == null) {
+            if (LOGGER.isLoggable(Level.WARNING)) {
+                LOGGER.warning("Configuration parameters for nodeId" + nodeId
+                        + " not found. The node has not joined yet or has left.");
+            }
+            return -1;
+        }
+        return ncConfig.get(IO_DEVICES).split(",").length;
+    }
+
+    public State getState() {
+        return state;
+    }
+
+}
diff --git a/asterix-runtime/.gitignore b/asterix-runtime/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/asterix-runtime/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AbstractAsterixListIterator.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AbstractAsterixListIterator.java
index efae5f9..269d363 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AbstractAsterixListIterator.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AbstractAsterixListIterator.java
@@ -13,7 +13,10 @@
     protected byte[] data;
     protected int count = 0;
     protected int pos = -1;
-    protected int size = -1;
+    protected int nextPos = -1;
+    protected int itemLen = -1;
+    protected int numberOfItems = -1;
+    protected int listLength = -1;
     protected int startOff = -1;
     protected IBinaryComparator cmp;
 
@@ -27,12 +30,12 @@
 
     @Override
     public boolean hasNext() {
-        return count < size;
+        return count < numberOfItems;
     }
 
     @Override
     public int size() {
-        return size;
+        return numberOfItems;
     }
 
     @Override
@@ -45,10 +48,20 @@
         return pos;
     }
 
+    public int getItemLen() {
+        return itemLen;
+    }
+
     @Override
     public void next() {
         try {
-            pos = getItemOffset(data, startOff, ++count);
+            pos = nextPos;
+            ++count;
+            nextPos = startOff + listLength;
+            if (count + 1 < numberOfItems) {
+                nextPos = getItemOffset(data, startOff, count + 1);
+            }
+            itemLen = nextPos - pos;
         } catch (AsterixException e) {
             throw new AsterixRuntimeException(e);
         }
@@ -59,6 +72,11 @@
         count = 0;
         try {
             pos = getItemOffset(data, startOff, count);
+            nextPos = startOff + listLength;
+            if (count + 1 < numberOfItems) {
+                nextPos = getItemOffset(data, startOff, count + 1);
+            }
+            itemLen = nextPos - pos;
         } catch (AsterixException e) {
             throw new AsterixRuntimeException(e);
         }
@@ -67,7 +85,8 @@
     public void reset(byte[] data, int startOff) {
         this.data = data;
         this.startOff = startOff;
-        size = getNumberOfItems(data, startOff);
+        this.numberOfItems = getNumberOfItems(data, startOff);
+        this.listLength = getListLength(data, startOff);
         ATypeTag tag = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(data[startOff + 1]);
         switch (tag) {
             case INT32: {
@@ -102,4 +121,6 @@
     protected abstract int getItemOffset(byte[] serOrderedList, int offset, int itemIndex) throws AsterixException;
 
     protected abstract int getNumberOfItems(byte[] serOrderedList, int offset);
+
+    protected abstract int getListLength(byte[] serOrderedList, int offset);
 }
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AsterixOrderedListIterator.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AsterixOrderedListIterator.java
index d3714c1..fc92875 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AsterixOrderedListIterator.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AsterixOrderedListIterator.java
@@ -14,4 +14,9 @@
     protected int getNumberOfItems(byte[] serOrderedList, int offset) {
         return AOrderedListSerializerDeserializer.getNumberOfItems(serOrderedList, offset);
     }
+
+    @Override
+    protected int getListLength(byte[] serOrderedList, int offset) {
+        return AOrderedListSerializerDeserializer.getOrderedListLength(serOrderedList, offset + 1);
+    }
 }
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AsterixUnorderedListIterator.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AsterixUnorderedListIterator.java
index de7742b..5f01581 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AsterixUnorderedListIterator.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/AsterixUnorderedListIterator.java
@@ -14,4 +14,9 @@
     protected int getNumberOfItems(byte[] serOrderedList, int offset) {
         return AUnorderedListSerializerDeserializer.getNumberOfItems(serOrderedList, offset);
     }
+
+    @Override
+    protected int getListLength(byte[] serOrderedList, int offset) {
+        return AUnorderedListSerializerDeserializer.getUnorderedListLength(serOrderedList, offset + 1);
+    }
 }
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/SimilarityJaccardCheckEvaluator.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/SimilarityJaccardCheckEvaluator.java
index ab73df2..b732f40 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/SimilarityJaccardCheckEvaluator.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/SimilarityJaccardCheckEvaluator.java
@@ -62,8 +62,8 @@
             probeListCount++;
             byte[] buf = probeIter.getData();
             int off = probeIter.getPos();
-            int len = getItemLen(buf, off);
-            keyEntry.set(buf, off, len);            
+            int len = probeIter.getItemLen();
+            keyEntry.set(buf, off, len);
             BinaryEntry entry = hashMap.get(keyEntry);
             if (entry != null) {
                 // Increment second value.
@@ -94,7 +94,7 @@
         }
         return intersectionSize;
     }
-    
+
     @Override
     protected void writeResult(float jacc) throws IOException {
         listBuilder.reset(listType);
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/SimilarityJaccardEvaluator.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/SimilarityJaccardEvaluator.java
index 9f5c9c8..391fb30 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/SimilarityJaccardEvaluator.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/SimilarityJaccardEvaluator.java
@@ -4,8 +4,6 @@
 import java.io.IOException;
 import java.util.Arrays;
 
-import edu.uci.ics.asterix.formats.nontagged.AqlBinaryComparatorFactoryProvider;
-import edu.uci.ics.asterix.formats.nontagged.AqlBinaryHashFunctionFactoryProvider;
 import edu.uci.ics.asterix.formats.nontagged.AqlSerializerDeserializerProvider;
 import edu.uci.ics.asterix.om.base.AFloat;
 import edu.uci.ics.asterix.om.base.AMutableFloat;
@@ -22,9 +20,10 @@
 import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
 import edu.uci.ics.hyracks.data.std.api.IDataOutputProvider;
 import edu.uci.ics.hyracks.data.std.primitive.IntegerPointable;
-import edu.uci.ics.hyracks.data.std.primitive.UTF8StringPointable;
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
+import edu.uci.ics.asterix.dataflow.data.nontagged.comparators.ListItemBinaryComparatorFactory;
+import edu.uci.ics.asterix.dataflow.data.nontagged.hash.ListItemBinaryHashFunctionFactory;
 
 public class SimilarityJaccardEvaluator implements ICopyEvaluator {
 
@@ -58,7 +57,8 @@
     protected int firstStart = -1;
     protected int secondStart = -1;
     protected float jaccSim = 0.0f;
-    protected ATypeTag itemTypeTag;
+    protected ATypeTag firstItemTypeTag;
+    protected ATypeTag secondItemTypeTag;
 
     protected BinaryHashMap hashMap;
     protected BinaryEntry keyEntry = new BinaryEntry();
@@ -105,6 +105,9 @@
 
         firstTypeTag = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(argOut.getByteArray()[firstStart]);
         secondTypeTag = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(argOut.getByteArray()[secondStart]);
+
+        firstItemTypeTag = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(argOut.getByteArray()[firstStart + 1]);
+        secondItemTypeTag = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(argOut.getByteArray()[secondStart + 1]);
     }
 
     protected boolean prepareLists(byte[] bytes, int firstStart, int secondStart, ATypeTag argType)
@@ -116,17 +119,12 @@
         if (firstListIter.size() == 0 || secondListIter.size() == 0) {
             return false;
         }
-        if (firstTypeTag == ATypeTag.ANY || secondTypeTag == ATypeTag.ANY) {
-            throw new AlgebricksException("\n Jaccard can only be called on homogenous lists");
-        }
         // TODO: Check item types are compatible.
-        itemTypeTag = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(bytes[firstStart + 1]);
         return true;
     }
 
     protected float computeResult(byte[] bytes, int firstStart, int secondStart, ATypeTag argType)
             throws AlgebricksException {
-        setHashMap(bytes, firstStart, secondStart);
         // We will subtract the intersection size later to get the real union size.
         int firstListSize = firstListIter.size();
         int secondListSize = secondListIter.size();
@@ -136,7 +134,10 @@
         AbstractAsterixListIterator probeList = (buildList == firstListIter) ? secondListIter : firstListIter;
         int buildListSize = (buildList == firstListIter) ? firstListSize : secondListSize;
         int probeListSize = (probeList == firstListIter) ? firstListSize : secondListSize;
+        ATypeTag buildItemTypeTag = (buildList == firstListIter) ? firstItemTypeTag : secondItemTypeTag;
+        ATypeTag probeItemTypeTag = (probeList == firstListIter) ? firstItemTypeTag : secondItemTypeTag;
 
+        setHashMap(bytes, buildItemTypeTag, probeItemTypeTag);
         buildHashMap(buildList);
         int intersectionSize = probeHashMap(probeList, buildListSize, probeListSize);
         // Special indicator for the "check" version of jaccard.
@@ -154,7 +155,7 @@
         while (buildIter.hasNext()) {
             byte[] buf = buildIter.getData();
             int off = buildIter.getPos();
-            int len = getItemLen(buf, off);
+            int len = buildIter.getItemLen();
             keyEntry.set(buf, off, len);
             BinaryEntry entry = hashMap.put(keyEntry, valEntry);
             if (entry != null) {
@@ -172,7 +173,7 @@
         while (probeIter.hasNext()) {
             byte[] buf = probeIter.getData();
             int off = probeIter.getPos();
-            int len = getItemLen(buf, off);
+            int len = probeIter.getItemLen();
             keyEntry.set(buf, off, len);
             BinaryEntry entry = hashMap.get(keyEntry);
             if (entry != null) {
@@ -195,69 +196,19 @@
         return intersectionSize;
     }
 
-    protected void setHashMap(byte[] bytes, int firstStart, int secondStart) {
+    protected void setHashMap(byte[] bytes, ATypeTag buildItemTypeTag, ATypeTag probeItemTypeTag) {
         if (hashMap != null) {
             hashMap.clear();
             return;
         }
-        IBinaryHashFunction hashFunc = null;
-        IBinaryComparator cmp = null;
-        switch (itemTypeTag) {
-            case INT32: {
-                hashFunc = AqlBinaryHashFunctionFactoryProvider.INTEGER_POINTABLE_INSTANCE.createBinaryHashFunction();
-                cmp = AqlBinaryComparatorFactoryProvider.INTEGER_POINTABLE_INSTANCE.createBinaryComparator();
-                break;
-            }
-            case FLOAT: {
-                hashFunc = AqlBinaryHashFunctionFactoryProvider.FLOAT_POINTABLE_INSTANCE.createBinaryHashFunction();
-                cmp = AqlBinaryComparatorFactoryProvider.FLOAT_POINTABLE_INSTANCE.createBinaryComparator();
-                break;
-            }
-            case DOUBLE: {
-                hashFunc = AqlBinaryHashFunctionFactoryProvider.DOUBLE_POINTABLE_INSTANCE.createBinaryHashFunction();
-                cmp = AqlBinaryComparatorFactoryProvider.DOUBLE_POINTABLE_INSTANCE.createBinaryComparator();
-                break;
-            }
-            case STRING: {
-                if (ignoreCase) {
-                    // Ignore case in comparisons and hashing.
-                    hashFunc = AqlBinaryHashFunctionFactoryProvider.UTF8STRING_LOWERCASE_POINTABLE_INSTANCE
-                            .createBinaryHashFunction();
-                    cmp = AqlBinaryComparatorFactoryProvider.UTF8STRING_LOWERCASE_POINTABLE_INSTANCE
-                            .createBinaryComparator();
-                } else {
-                    hashFunc = AqlBinaryHashFunctionFactoryProvider.UTF8STRING_POINTABLE_INSTANCE
-                            .createBinaryHashFunction();
-                    cmp = AqlBinaryComparatorFactoryProvider.UTF8STRING_POINTABLE_INSTANCE.createBinaryComparator();
-                }
-                break;
-            }
-            default: {
-                break;
-            }
-        }
-        hashMap = new BinaryHashMap(TABLE_SIZE, TABLE_FRAME_SIZE, hashFunc, cmp);
-    }
 
-    protected int getItemLen(byte[] bytes, int itemOff) {
-        switch (itemTypeTag) {
-            case INT32: {
-                return 4;
-            }
-            case FLOAT: {
-                return 4;
-            }
-            case DOUBLE: {
-                return 8;
-            }
-            case STRING: {
-                // 2 bytes for the UTF8 len, plus the string data.
-                return 2 + UTF8StringPointable.getUTFLength(bytes, itemOff);
-            }
-            default: {
-                return -1;
-            }
-        }
+        IBinaryHashFunction putHashFunc = ListItemBinaryHashFunctionFactory.INSTANCE.createBinaryHashFunction(
+                buildItemTypeTag, ignoreCase);
+        IBinaryHashFunction getHashFunc = ListItemBinaryHashFunctionFactory.INSTANCE.createBinaryHashFunction(
+                probeItemTypeTag, ignoreCase);
+        IBinaryComparator cmp = ListItemBinaryComparatorFactory.INSTANCE.createBinaryComparator(buildItemTypeTag,
+                probeItemTypeTag, ignoreCase);
+        hashMap = new BinaryHashMap(TABLE_SIZE, TABLE_FRAME_SIZE, putHashFunc, getHashFunc, cmp);
     }
 
     protected boolean checkArgTypes(ATypeTag typeTag1, ATypeTag typeTag2) throws AlgebricksException {
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractQuadStringStringEval.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractQuadStringStringEval.java
index ce9ecd2..2bd874f 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractQuadStringStringEval.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractQuadStringStringEval.java
@@ -6,7 +6,6 @@
 
 import java.io.DataOutput;
 import java.util.Arrays;
-import java.util.regex.Pattern;
 
 import edu.uci.ics.asterix.formats.nontagged.AqlSerializerDeserializerProvider;
 import edu.uci.ics.asterix.om.base.AMutableString;
@@ -24,9 +23,6 @@
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
 
-/**
- * @author ilovesoup
- */
 public abstract class AbstractQuadStringStringEval implements ICopyEvaluator {
 
     private DataOutput dout;
@@ -138,7 +134,7 @@
             } else if (c == '_') {
                 sb.append(".");
             } else {
-                if (Arrays.binarySearch(reservedRegexChars, c) >= 0) {
+                if (Arrays.binarySearch(StringEvaluatorUtils.reservedRegexChars, c) >= 0) {
                     sb.append('\\');
                 }
                 sb.append(c);
@@ -147,33 +143,4 @@
         return sb.toString();
     }
 
-    protected int toFlag(AString pattern) {
-        String str = pattern.getStringValue();
-        int flag = 0;
-        for (int i = 0; i < str.length(); i++) {
-            char c = str.charAt(i);
-            switch (c) {
-                case 's':
-                    flag |= Pattern.DOTALL;
-                    break;
-                case 'm':
-                    flag |= Pattern.MULTILINE;
-                    break;
-                case 'i':
-                    flag |= Pattern.CASE_INSENSITIVE;
-                    break;
-                case 'x':
-                    flag |= Pattern.COMMENTS;
-                    break;
-            }
-        }
-        return flag;
-    }
-
-    private final static char[] reservedRegexChars = new char[] { '\\', '(', ')', '[', ']', '{', '}', '.', '^', '$',
-            '*', '|' };
-
-    static {
-        Arrays.sort(reservedRegexChars);
-    }
 }
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractTripleStringBoolEval.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractTripleStringBoolEval.java
index a3be797..7d0a01f 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractTripleStringBoolEval.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractTripleStringBoolEval.java
@@ -2,7 +2,6 @@
 
 import java.io.DataOutput;
 import java.util.Arrays;
-import java.util.regex.Pattern;
 
 import edu.uci.ics.asterix.formats.nontagged.AqlSerializerDeserializerProvider;
 import edu.uci.ics.asterix.om.base.ABoolean;
@@ -19,9 +18,6 @@
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
 
-/**
- * @author Xiaoyu Ma
- */
 public abstract class AbstractTripleStringBoolEval implements ICopyEvaluator {
 
     private DataOutput dout;
@@ -118,7 +114,7 @@
             } else if (c == '_') {
                 sb.append(".");
             } else {
-                if (Arrays.binarySearch(reservedRegexChars, c) >= 0) {
+                if (Arrays.binarySearch(StringEvaluatorUtils.reservedRegexChars, c) >= 0) {
                     sb.append('\\');
                 }
                 sb.append(c);
@@ -126,34 +122,4 @@
         }
         return sb.toString();
     }
-
-    protected int toFlag(AString pattern) {
-        String str = pattern.getStringValue();
-        int flag = 0;
-        for (int i = 0; i < str.length(); i++) {
-            char c = str.charAt(i);
-            switch (c) {
-                case 's':
-                    flag |= Pattern.DOTALL;
-                    break;
-                case 'm':
-                    flag |= Pattern.MULTILINE;
-                    break;
-                case 'i':
-                    flag |= Pattern.CASE_INSENSITIVE;
-                    break;
-                case 'x':
-                    flag |= Pattern.COMMENTS;
-                    break;
-            }
-        }
-        return flag;
-    }
-
-    private final static char[] reservedRegexChars = new char[] { '\\', '(', ')', '[', ']', '{', '}', '.', '^', '$',
-            '*', '|' };
-
-    static {
-        Arrays.sort(reservedRegexChars);
-    }
 }
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractTripleStringStringEval.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractTripleStringStringEval.java
index 41d0b3d..4833f16 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractTripleStringStringEval.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractTripleStringStringEval.java
@@ -20,9 +20,6 @@
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
 
-/**
- * @author Xiaoyu Ma
- */
 public abstract class AbstractTripleStringStringEval implements ICopyEvaluator {
 
     private DataOutput dout;
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/BinaryHashMap.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/BinaryHashMap.java
index 240f8c7..6367996 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/BinaryHashMap.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/BinaryHashMap.java
@@ -20,150 +20,154 @@
  * Intended to work with binary data and be able to map arbitrary key types to
  * arbitrary value types, given that they have implementations of
  * IBinaryHashFunction and IBinaryComparator.
- * 
  * Uses 2 bytes each to indicate the length of the key and the value.
  * Uses 8 byte pointers for the linked list (4 bytes frame index, 4 bytes frame offset).
- * 
  * This class is NOT thread safe.
- * 
  */
 public class BinaryHashMap {
-	// Special value to indicate an empty "bucket" in the header array.
-	private static final long NULL_PTR = -1;
-	private static final int PTR_SIZE = 8;
-	private static final int SLOT_SIZE = 2;
-	private static final int ENTRY_HEADER_SIZE = PTR_SIZE + 2 * SLOT_SIZE;
-	private final IBinaryHashFunction hashFunc;
-	private final IBinaryComparator cmp;
-	private final BinaryEntry returnValue = new BinaryEntry();
-	
-	private final long[] listHeads;
-	private final int frameSize;
-	private final List<ByteBuffer> frames = new ArrayList<ByteBuffer>();
-	private int currFrameIndex;
-	private int nextOff;
-	private int size;
-	
-	// Can be used for key or value.
-	public static class BinaryEntry {
-		public byte[] buf;
-		public int off;
-		public int len;
-		
-		public void set(byte[] buf, int off, int len) {
-			this.buf = buf;
-			this.off = off;
-			this.len = len;
-		}
-		
-		// Inefficient. Just for debugging.
-		@SuppressWarnings("rawtypes")
-		public String print(ISerializerDeserializer serde) throws HyracksDataException {
-			ByteArrayInputStream inStream = new ByteArrayInputStream(buf, off, len);
+    // Special value to indicate an empty "bucket" in the header array.
+    private static final long NULL_PTR = -1;
+    private static final int PTR_SIZE = 8;
+    private static final int SLOT_SIZE = 2;
+    private static final int ENTRY_HEADER_SIZE = PTR_SIZE + 2 * SLOT_SIZE;
+    private final IBinaryHashFunction putHashFunc;
+    private final IBinaryHashFunction getHashFunc;
+    private final IBinaryComparator cmp;
+    private final BinaryEntry returnValue = new BinaryEntry();
+
+    private final long[] listHeads;
+    private final int frameSize;
+    private final List<ByteBuffer> frames = new ArrayList<ByteBuffer>();
+    private int currFrameIndex;
+    private int nextOff;
+    private int size;
+
+    // Can be used for key or value.
+    public static class BinaryEntry {
+        public byte[] buf;
+        public int off;
+        public int len;
+
+        public void set(byte[] buf, int off, int len) {
+            this.buf = buf;
+            this.off = off;
+            this.len = len;
+        }
+
+        // Inefficient. Just for debugging.
+        @SuppressWarnings("rawtypes")
+        public String print(ISerializerDeserializer serde) throws HyracksDataException {
+            ByteArrayInputStream inStream = new ByteArrayInputStream(buf, off, len);
             DataInput dataIn = new DataInputStream(inStream);
             return serde.deserialize(dataIn).toString();
-		}
-	}
-	
-	public BinaryHashMap(int tableSize, int frameSize, IBinaryHashFunction hashFunc, IBinaryComparator cmp) {
-		listHeads = new long[tableSize];
-		this.frameSize = frameSize;		
-		this.hashFunc = hashFunc;
-		this.cmp = cmp;
-		frames.add(ByteBuffer.allocate(frameSize));
-		clear();
-	}
-	
-	/**
-	 * Inserts key, value into the hash map. If key already exists, returns
-	 * existing entry. Otherwise, returns null.
-	 * 
-	 * @param key
-	 * @param value
-	 * @return
-	 */
-	public BinaryEntry put(BinaryEntry key, BinaryEntry value) {
-		return getPutInternal(key, value, true);
-	}
-	
-	/**
-	 * Retrieves value for given key. Returns null if key doesn't exist.
-	 * 
-	 * @param key
-	 * @param value
-	 * @return
-	 */
-	public BinaryEntry get(BinaryEntry key) {
-		return getPutInternal(key, null, false);
-	}
-	
-	private BinaryEntry getPutInternal(BinaryEntry key, BinaryEntry value, boolean put) {
-		int bucket = Math.abs(hashFunc.hash(key.buf, key.off, key.len) % listHeads.length);
-		long headPtr = listHeads[bucket];
-		if (headPtr == NULL_PTR) {
-			// Key definitely doesn't exist yet.
-			if (put) {
-				listHeads[bucket] = appendEntry(key, value);
-			}
-			return null;
-		}
-		// Follow the chain until we found an entry matching the given key.
-		int frameOff;
-		ByteBuffer frame;
-		do {				
-			int frameIndex = getFrameIndex(headPtr);
-			frameOff = getFrameOffset(headPtr);
-			frame = frames.get(frameIndex);
-			int entryKeyOff = frameOff + ENTRY_HEADER_SIZE;
-			int entryKeyLen = frame.getShort(frameOff);
-			if (cmp.compare(frame.array(), entryKeyOff, entryKeyLen, key.buf,
-					key.off, key.len) == 0) {
-				// Key found, set values and return.
-				int entryValOff = frameOff + ENTRY_HEADER_SIZE + entryKeyLen;
-				int entryValLen = frame.getShort(frameOff + SLOT_SIZE);
-				returnValue.set(frame.array(), entryValOff, entryValLen);
-				return returnValue;
-			}
-			headPtr = frame.getLong(frameOff + 2 * SLOT_SIZE);
-		} while (headPtr != NULL_PTR);
-		// We've followed the chain to its end, and didn't find the key.
-		if (put) {
-			// Append the new entry, and set a pointer to it in the last entry we've checked.
-			long newPtr = appendEntry(key, value);
-			frame.putLong(frameOff + 2 * SLOT_SIZE, newPtr);
-		}
-		return null;
-	}
-	
-	public long appendEntry(BinaryEntry key, BinaryEntry value) {
-		ByteBuffer frame = frames.get(currFrameIndex);
-		int requiredSpace = key.len + value.len + ENTRY_HEADER_SIZE;
-		if (nextOff + requiredSpace >= frameSize) {
-			// Entry doesn't fit on frame, allocate a new one.
-			if (requiredSpace > frameSize) {
-				throw new IllegalStateException("Key and value greater than framesize.");
-			}
-			frames.add(ByteBuffer.allocate(frameSize));
-			currFrameIndex++;
-			nextOff = 0;
-			frame = frames.get(currFrameIndex);
-		}
-		writeEntryHeader(frame, nextOff, key.len, value.len, NULL_PTR);
-		System.arraycopy(key.buf, key.off, frame.array(), nextOff + ENTRY_HEADER_SIZE, key.len);
-		System.arraycopy(value.buf, value.off, frame.array(), nextOff + ENTRY_HEADER_SIZE + key.len, value.len);
-		long entryPtr = getEntryPtr(currFrameIndex, nextOff);
-		nextOff += requiredSpace;
-		size++;
-		return entryPtr;
-	}
-	
-	private void writeEntryHeader(ByteBuffer frame, int targetOff, int keyLen, int valLen, long ptr) {
-		frame.putShort(targetOff, (short) keyLen);
-		frame.putShort(targetOff + SLOT_SIZE, (short) valLen);
-		frame.putLong(targetOff + 2 * SLOT_SIZE, ptr);
-	}
+        }
+    }
 
-	private long getEntryPtr(int frameIndex, int frameOff) {
+    public BinaryHashMap(int tableSize, int frameSize, IBinaryHashFunction putHashFunc,
+            IBinaryHashFunction getHashFunc, IBinaryComparator cmp) {
+        listHeads = new long[tableSize];
+        this.frameSize = frameSize;
+        this.putHashFunc = putHashFunc;
+        this.getHashFunc = getHashFunc;
+        this.cmp = cmp;
+        frames.add(ByteBuffer.allocate(frameSize));
+        clear();
+    }
+
+    /**
+     * Inserts key, value into the hash map. If key already exists, returns
+     * existing entry. Otherwise, returns null.
+     * 
+     * @param key
+     * @param value
+     * @return
+     */
+    public BinaryEntry put(BinaryEntry key, BinaryEntry value) {
+        return getPutInternal(key, value, true);
+    }
+
+    /**
+     * Retrieves value for given key. Returns null if key doesn't exist.
+     * 
+     * @param key
+     * @param value
+     * @return
+     */
+    public BinaryEntry get(BinaryEntry key) {
+        return getPutInternal(key, null, false);
+    }
+
+    private BinaryEntry getPutInternal(BinaryEntry key, BinaryEntry value, boolean put) {
+        int bucket;
+        if (put) {
+            bucket = Math.abs(putHashFunc.hash(key.buf, key.off, key.len) % listHeads.length);
+        } else {
+            bucket = Math.abs(getHashFunc.hash(key.buf, key.off, key.len) % listHeads.length);
+        }
+        long headPtr = listHeads[bucket];
+        if (headPtr == NULL_PTR) {
+            // Key definitely doesn't exist yet.
+            if (put) {
+                listHeads[bucket] = appendEntry(key, value);
+            }
+            return null;
+        }
+        // Follow the chain until we found an entry matching the given key.
+        int frameOff;
+        ByteBuffer frame;
+        do {
+            int frameIndex = getFrameIndex(headPtr);
+            frameOff = getFrameOffset(headPtr);
+            frame = frames.get(frameIndex);
+            int entryKeyOff = frameOff + ENTRY_HEADER_SIZE;
+            int entryKeyLen = frame.getShort(frameOff);
+            if (cmp.compare(frame.array(), entryKeyOff, entryKeyLen, key.buf, key.off, key.len) == 0) {
+                // Key found, set values and return.
+                int entryValOff = frameOff + ENTRY_HEADER_SIZE + entryKeyLen;
+                int entryValLen = frame.getShort(frameOff + SLOT_SIZE);
+                returnValue.set(frame.array(), entryValOff, entryValLen);
+                return returnValue;
+            }
+            headPtr = frame.getLong(frameOff + 2 * SLOT_SIZE);
+        } while (headPtr != NULL_PTR);
+        // We've followed the chain to its end, and didn't find the key.
+        if (put) {
+            // Append the new entry, and set a pointer to it in the last entry we've checked.
+            long newPtr = appendEntry(key, value);
+            frame.putLong(frameOff + 2 * SLOT_SIZE, newPtr);
+        }
+        return null;
+    }
+
+    public long appendEntry(BinaryEntry key, BinaryEntry value) {
+        ByteBuffer frame = frames.get(currFrameIndex);
+        int requiredSpace = key.len + value.len + ENTRY_HEADER_SIZE;
+        if (nextOff + requiredSpace >= frameSize) {
+            // Entry doesn't fit on frame, allocate a new one.
+            if (requiredSpace > frameSize) {
+                throw new IllegalStateException("Key and value greater than framesize.");
+            }
+            frames.add(ByteBuffer.allocate(frameSize));
+            currFrameIndex++;
+            nextOff = 0;
+            frame = frames.get(currFrameIndex);
+        }
+        writeEntryHeader(frame, nextOff, key.len, value.len, NULL_PTR);
+        System.arraycopy(key.buf, key.off, frame.array(), nextOff + ENTRY_HEADER_SIZE, key.len);
+        System.arraycopy(value.buf, value.off, frame.array(), nextOff + ENTRY_HEADER_SIZE + key.len, value.len);
+        long entryPtr = getEntryPtr(currFrameIndex, nextOff);
+        nextOff += requiredSpace;
+        size++;
+        return entryPtr;
+    }
+
+    private void writeEntryHeader(ByteBuffer frame, int targetOff, int keyLen, int valLen, long ptr) {
+        frame.putShort(targetOff, (short) keyLen);
+        frame.putShort(targetOff + SLOT_SIZE, (short) valLen);
+        frame.putLong(targetOff + 2 * SLOT_SIZE, ptr);
+    }
+
+    private long getEntryPtr(int frameIndex, int frameOff) {
         return (((long) frameIndex) << 32) + frameOff;
     }
 
@@ -175,93 +179,94 @@
         return (int) (ptr & 0xffffffff);
     }
 
-	public int size() {
-		return size;
-	}
+    public int size() {
+        return size;
+    }
 
-	public boolean isEmpty() {
-		return size > 0;
-	}
+    public boolean isEmpty() {
+        return size > 0;
+    }
 
-	public void clear() {
-		// Initialize all entries to point to nothing.
-		Arrays.fill(listHeads, NULL_PTR);
-		currFrameIndex = 0;
-		nextOff = 0;
-		size = 0;
-	}
-	
-	public Iterator<Pair<BinaryEntry, BinaryEntry>> iterator() {
-		return new BinaryHashMapIterator();
-	}
-	
-	public class BinaryHashMapIterator implements Iterator<Pair<BinaryEntry, BinaryEntry> > {
-		private final Pair<BinaryEntry, BinaryEntry> val = new Pair<BinaryEntry, BinaryEntry>(new BinaryEntry(), new BinaryEntry());
-		private int listHeadIndex;
-		private ByteBuffer frame;
-		private int frameIndex;
-		private int frameOff;
-		
-		public BinaryHashMapIterator() {
-			listHeadIndex = 0;
-			frame = null;
-			frameIndex = -1;
-			frameOff = -1;
-		}
-		
-		@Override
-		public boolean hasNext() {
-			if (frame != null) {
-				long nextPtr = frame.getLong(frameOff + 2 * SLOT_SIZE);
-				if (nextPtr == NULL_PTR) {
-					// End of current list.
-					listHeadIndex++;
-					return nextListHead();
-				} else {
-					// Follow pointer.
-					setValue(nextPtr);
-					return true;
-				}
-			}
-			return nextListHead();
-		}
+    public void clear() {
+        // Initialize all entries to point to nothing.
+        Arrays.fill(listHeads, NULL_PTR);
+        currFrameIndex = 0;
+        nextOff = 0;
+        size = 0;
+    }
 
-		private boolean nextListHead() {
-			// Position to first non-null list-head pointer.
-			while(listHeadIndex < listHeads.length && listHeads[listHeadIndex] == NULL_PTR) {
-				listHeadIndex++;
-			}
-			if (listHeadIndex < listHeads.length) {
-				// Positioned to first non-null list head.
-				setValue(listHeads[listHeadIndex]);
-				return true;
-			} else {
-				// No more lists.
-				frame = null;
-				return false;
-			}
-		}
-		
-		private void setValue(long ptr) {
-			frameIndex = getFrameIndex(ptr);
-			frameOff = getFrameOffset(ptr);
-			frame = frames.get(frameIndex);
-			int entryKeyOff = frameOff + ENTRY_HEADER_SIZE;
-			int entryKeyLen = frame.getShort(frameOff);
-			int entryValOff = frameOff + ENTRY_HEADER_SIZE + entryKeyLen;
-			int entryValLen = frame.getShort(frameOff + SLOT_SIZE);
-			val.first.set(frame.array(), entryKeyOff, entryKeyLen);
-			val.second.set(frame.array(), entryValOff, entryValLen);
-		}
-		
-		@Override
-		public Pair<BinaryEntry, BinaryEntry> next() {
-			return val;
-		}
+    public Iterator<Pair<BinaryEntry, BinaryEntry>> iterator() {
+        return new BinaryHashMapIterator();
+    }
 
-		@Override
-		public void remove() {
-			throw new UnsupportedOperationException("Remove not implemented");
-		}
-	}
+    public class BinaryHashMapIterator implements Iterator<Pair<BinaryEntry, BinaryEntry>> {
+        private final Pair<BinaryEntry, BinaryEntry> val = new Pair<BinaryEntry, BinaryEntry>(new BinaryEntry(),
+                new BinaryEntry());
+        private int listHeadIndex;
+        private ByteBuffer frame;
+        private int frameIndex;
+        private int frameOff;
+
+        public BinaryHashMapIterator() {
+            listHeadIndex = 0;
+            frame = null;
+            frameIndex = -1;
+            frameOff = -1;
+        }
+
+        @Override
+        public boolean hasNext() {
+            if (frame != null) {
+                long nextPtr = frame.getLong(frameOff + 2 * SLOT_SIZE);
+                if (nextPtr == NULL_PTR) {
+                    // End of current list.
+                    listHeadIndex++;
+                    return nextListHead();
+                } else {
+                    // Follow pointer.
+                    setValue(nextPtr);
+                    return true;
+                }
+            }
+            return nextListHead();
+        }
+
+        private boolean nextListHead() {
+            // Position to first non-null list-head pointer.
+            while (listHeadIndex < listHeads.length && listHeads[listHeadIndex] == NULL_PTR) {
+                listHeadIndex++;
+            }
+            if (listHeadIndex < listHeads.length) {
+                // Positioned to first non-null list head.
+                setValue(listHeads[listHeadIndex]);
+                return true;
+            } else {
+                // No more lists.
+                frame = null;
+                return false;
+            }
+        }
+
+        private void setValue(long ptr) {
+            frameIndex = getFrameIndex(ptr);
+            frameOff = getFrameOffset(ptr);
+            frame = frames.get(frameIndex);
+            int entryKeyOff = frameOff + ENTRY_HEADER_SIZE;
+            int entryKeyLen = frame.getShort(frameOff);
+            int entryValOff = frameOff + ENTRY_HEADER_SIZE + entryKeyLen;
+            int entryValLen = frame.getShort(frameOff + SLOT_SIZE);
+            val.first.set(frame.array(), entryKeyOff, entryKeyLen);
+            val.second.set(frame.array(), entryValOff, entryValLen);
+        }
+
+        @Override
+        public Pair<BinaryEntry, BinaryEntry> next() {
+            return val;
+        }
+
+        @Override
+        public void remove() {
+            throw new UnsupportedOperationException("Remove not implemented");
+        }
+    }
 }
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/CodePointToStringDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/CodePointToStringDescriptor.java
index 1a3e1b8..14651fe 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/CodePointToStringDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/CodePointToStringDescriptor.java
@@ -21,9 +21,6 @@
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
 import edu.uci.ics.hyracks.dataflow.common.data.util.StringUtils;
 
-/**
- * @author Xiaoyu Ma
- */
 public class CodePointToStringDescriptor extends AbstractScalarFunctionDynamicDescriptor {
 
     private static final long serialVersionUID = 1L;
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/CodepointIterator.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/CodepointIterator.java
index f103e0f..1365277 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/CodepointIterator.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/CodepointIterator.java
@@ -2,10 +2,6 @@
 
 import edu.uci.ics.hyracks.data.std.primitive.UTF8StringPointable;
 
-/**
- *
- * @author Xiaoyu Ma
- */
 public class CodepointIterator {
     public void reset(byte [] buf, int startPos) {
         this.buf = buf;
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/NumericAddDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/NumericAddDescriptor.java
index 0181698..10aea29 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/NumericAddDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/NumericAddDescriptor.java
@@ -27,7 +27,7 @@
             if (y > 0 && z < 0)
                 throw new ArithmeticException("Overflow adding " + x + " + " + y);
         } else if (y < 0 && z > 0)
-            throw new ArithmeticException("Overflow adding " + x + " + " + y);
+            throw new ArithmeticException("Underflow adding " + x + " + " + y);
         return z;
     }
 
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/NumericCaretDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/NumericCaretDescriptor.java
new file mode 100644
index 0000000..208c454
--- /dev/null
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/NumericCaretDescriptor.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.runtime.evaluators.functions;
+
+import edu.uci.ics.asterix.om.functions.AsterixBuiltinFunctions;
+import edu.uci.ics.asterix.om.functions.IFunctionDescriptor;
+import edu.uci.ics.asterix.om.functions.IFunctionDescriptorFactory;
+import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+
+public class NumericCaretDescriptor extends AbstractNumericArithmeticEval {
+
+    private static final long serialVersionUID = 1L;
+
+    public static final IFunctionDescriptorFactory FACTORY = new IFunctionDescriptorFactory() {
+        public IFunctionDescriptor createFunctionDescriptor() {
+            return new NumericCaretDescriptor();
+        }
+    };
+
+    /* (non-Javadoc)
+     * @see edu.uci.ics.asterix.runtime.evaluators.functions.AbstractNumericArithmeticEval#evaluateInteger(long, long)
+     */
+    @Override
+    protected long evaluateInteger(long lhs, long rhs) throws HyracksDataException {
+        double result = Math.pow(lhs, rhs);
+        if (result > Long.MAX_VALUE) {
+            throw new ArithmeticException("Overflow of caret operation: " + lhs + " ^ " + rhs);
+        }
+        if (result < Long.MIN_VALUE) {
+            throw new ArithmeticException("Underflow of caret operation: " + lhs + " ^ " + rhs);
+        }
+        return (long) result;
+    }
+
+    /* (non-Javadoc)
+     * @see edu.uci.ics.asterix.runtime.evaluators.functions.AbstractNumericArithmeticEval#evaluateDouble(double, double)
+     */
+    @Override
+    protected double evaluateDouble(double lhs, double rhs) throws HyracksDataException {
+        return Math.pow(lhs, rhs);
+    }
+
+    /* (non-Javadoc)
+     * @see edu.uci.ics.asterix.om.functions.AbstractFunctionDescriptor#getIdentifier()
+     */
+    @Override
+    public FunctionIdentifier getIdentifier() {
+        return AsterixBuiltinFunctions.CARET;
+    }
+
+}
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringConcatDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringConcatDescriptor.java
index bcd199c..5ffcb29 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringConcatDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringConcatDescriptor.java
@@ -25,9 +25,6 @@
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
 import edu.uci.ics.hyracks.dataflow.common.data.util.StringUtils;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringConcatDescriptor extends AbstractScalarFunctionDynamicDescriptor {
 
     private static final long serialVersionUID = 1L;
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEndWithDescrtiptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEndWithDescrtiptor.java
index 6d0eaad..3e08fa3 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEndWithDescrtiptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEndWithDescrtiptor.java
@@ -18,9 +18,6 @@
 import edu.uci.ics.hyracks.data.std.primitive.UTF8StringPointable;
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringEndWithDescrtiptor extends AbstractScalarFunctionDynamicDescriptor {
     private static final long serialVersionUID = 1L;
 
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEqualDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEqualDescriptor.java
index e921e45..e778f3e 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEqualDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEqualDescriptor.java
@@ -14,9 +14,6 @@
 import edu.uci.ics.hyracks.data.std.primitive.UTF8StringPointable;
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringEqualDescriptor extends AbstractScalarFunctionDynamicDescriptor {
     private static final long serialVersionUID = 1L;
 
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEvaluatorUtils.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEvaluatorUtils.java
new file mode 100644
index 0000000..98a70b4
--- /dev/null
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringEvaluatorUtils.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.runtime.evaluators.functions;
+
+import java.util.regex.Pattern;
+
+import edu.uci.ics.asterix.om.base.AString;
+
+public class StringEvaluatorUtils {
+
+    public static int toFlag(AString pattern) {
+        String str = pattern.getStringValue();
+        int flag = 0;
+        for (int i = 0; i < str.length(); i++) {
+            char c = str.charAt(i);
+            switch (c) {
+                case 's':
+                    flag |= Pattern.DOTALL;
+                    break;
+                case 'm':
+                    flag |= Pattern.MULTILINE;
+                    break;
+                case 'i':
+                    flag |= Pattern.CASE_INSENSITIVE;
+                    break;
+                case 'x':
+                    flag |= Pattern.COMMENTS;
+                    break;
+            }
+        }
+        return flag;
+    }
+
+    public final static char[] reservedRegexChars = new char[] { '$', '(', ')', '*', '.', '[', '\\', ']', '^', '{',
+            '|', '}' };
+    
+}
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringJoinDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringJoinDescriptor.java
index 9c2f960..7742ccc 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringJoinDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringJoinDescriptor.java
@@ -21,9 +21,6 @@
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
 import edu.uci.ics.hyracks.dataflow.common.data.util.StringUtils;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringJoinDescriptor extends AbstractScalarFunctionDynamicDescriptor {
 
     private static final long serialVersionUID = 1L;
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringLowerCaseDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringLowerCaseDescriptor.java
index 5e188d3..d8d0b55 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringLowerCaseDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringLowerCaseDescriptor.java
@@ -23,9 +23,6 @@
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
 import edu.uci.ics.hyracks.dataflow.common.data.util.StringUtils;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringLowerCaseDescriptor extends AbstractScalarFunctionDynamicDescriptor {
     private static final long serialVersionUID = 1L;
 
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringMatchesDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringMatchesDescriptor.java
index 03a3545..e26a0c6 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringMatchesDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringMatchesDescriptor.java
@@ -26,9 +26,6 @@
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 import edu.uci.ics.hyracks.data.std.util.ByteArrayAccessibleOutputStream;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringMatchesDescriptor extends AbstractScalarFunctionDynamicDescriptor {
     private static final long serialVersionUID = 1L;
 
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringMatchesWithFlagDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringMatchesWithFlagDescriptor.java
index 93dc342..6da320b 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringMatchesWithFlagDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringMatchesWithFlagDescriptor.java
@@ -30,9 +30,6 @@
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 import edu.uci.ics.hyracks.data.std.util.ByteArrayAccessibleOutputStream;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringMatchesWithFlagDescriptor extends AbstractScalarFunctionDynamicDescriptor {
 
     private static final long serialVersionUID = 1L;
@@ -112,7 +109,7 @@
                                 DataInputStream di = new DataInputStream(new ByteArrayInputStream(
                                         lastFlags.getByteArray()));
                                 astrFlags = (AString) stringSerde.deserialize(di);
-                                flags = toFlag(astrFlags);
+                                flags = StringEvaluatorUtils.toFlag(astrFlags);
                             }
 
                             pattern = Pattern.compile(strPattern, flags);
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringReplaceDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringReplaceDescriptor.java
index 230eb34..c8917dc 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringReplaceDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringReplaceDescriptor.java
@@ -26,9 +26,6 @@
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 import edu.uci.ics.hyracks.data.std.util.ByteArrayAccessibleOutputStream;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringReplaceDescriptor extends AbstractScalarFunctionDynamicDescriptor {
 
     private static final long serialVersionUID = 1L;
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringReplaceWithFlagsDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringReplaceWithFlagsDescriptor.java
index 4f18863..74c30e7 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringReplaceWithFlagsDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringReplaceWithFlagsDescriptor.java
@@ -26,9 +26,6 @@
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 import edu.uci.ics.hyracks.data.std.util.ByteArrayAccessibleOutputStream;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringReplaceWithFlagsDescriptor extends AbstractScalarFunctionDynamicDescriptor {
 
     private static final long serialVersionUID = 1L;
@@ -130,7 +127,7 @@
                                 DataInputStream di = new DataInputStream(new ByteArrayInputStream(
                                         lastFlags.getByteArray()));
                                 astrFlags = (AString) stringSerde.deserialize(di);
-                                flags = toFlag(astrFlags);
+                                flags = StringEvaluatorUtils.toFlag(astrFlags);
                             }
 
                             if (newPattern || newFlags)
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringStartWithDescrtiptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringStartWithDescrtiptor.java
index 601c3d0..c852fbc 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringStartWithDescrtiptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringStartWithDescrtiptor.java
@@ -14,9 +14,6 @@
 import edu.uci.ics.hyracks.data.std.primitive.UTF8StringPointable;
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringStartWithDescrtiptor extends AbstractScalarFunctionDynamicDescriptor {
     private static final long serialVersionUID = 1L;
 
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringToCodePointDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringToCodePointDescriptor.java
index e001d9e..d34280e 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringToCodePointDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/StringToCodePointDescriptor.java
@@ -25,18 +25,10 @@
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
 
-/**
- * @author Xiaoyu Ma
- */
 public class StringToCodePointDescriptor extends AbstractScalarFunctionDynamicDescriptor {
 
     private static final long serialVersionUID = 1L;
 
-    public static final IFunctionDescriptorFactory FACTORY1 = new IFunctionDescriptorFactory() {
-        public IFunctionDescriptor createFunctionDescriptor() {
-            return new StringToCodePointDescriptor();
-        }
-    };
     public static final IFunctionDescriptorFactory FACTORY = new IFunctionDescriptorFactory() {
         public IFunctionDescriptor createFunctionDescriptor() {
             return new StringToCodePointDescriptor();
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/SubstringBeforeDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/SubstringBeforeDescriptor.java
index 77911af..61d5d72 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/SubstringBeforeDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/SubstringBeforeDescriptor.java
@@ -72,8 +72,7 @@
                         int posPattern = 3;
 
                         int offset = 0;
-                        while (posSrc - 3 < srcLen - patternLen) {
-                            // offset = 0;                        
+                        while (posSrc - 3 < srcLen - patternLen) {                       
                             while (posPattern + offset - 3 < patternLen && posSrc + offset - 3 < srcLen) {
                                 char c1 = UTF8StringPointable.charAt(src, posSrc + offset);
                                 char c2 = UTF8StringPointable.charAt(pattern, posPattern + offset);
@@ -82,7 +81,6 @@
                                 offset++;
                             }
                             if (offset == patternLen) {
-                                // found = true;
                                 break;
                             }
                             posSrc += UTF8StringPointable.charSize(src, posSrc);
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/AdjustDateTimeForTimeZoneDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/AdjustDateTimeForTimeZoneDescriptor.java
index 441d20a..55b9663 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/AdjustDateTimeForTimeZoneDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/AdjustDateTimeForTimeZoneDescriptor.java
@@ -120,8 +120,8 @@
 
                             StringBuilder sbder = new StringBuilder();
 
-                            calInstance.getExtendStringRepWithTimezoneUntilField(chronon, timezone, sbder, Fields.YEAR,
-                                    Fields.MILLISECOND);
+                            calInstance.getExtendStringRepUntilField(chronon, timezone, sbder, Fields.YEAR,
+                                    Fields.MILLISECOND, true);
 
                             out.writeByte(SER_STRING_TYPE_TAG);
                             out.writeUTF(sbder.toString());
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/AdjustTimeForTimeZoneDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/AdjustTimeForTimeZoneDescriptor.java
index 1ca64c6..340545d 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/AdjustTimeForTimeZoneDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/AdjustTimeForTimeZoneDescriptor.java
@@ -120,8 +120,8 @@
 
                             StringBuilder sbder = new StringBuilder();
 
-                            calInstance.getExtendStringRepWithTimezoneUntilField(chronon, timezone, sbder, Fields.HOUR,
-                                    Fields.MILLISECOND);
+                            calInstance.getExtendStringRepUntilField(chronon, timezone, sbder, Fields.HOUR,
+                                    Fields.MILLISECOND, true);
 
                             out.writeByte(SER_STRING_TYPE_TAG);
                             out.writeUTF(sbder.toString());
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/CalendarDuartionFromDateDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/CalendarDuartionFromDateDescriptor.java
index c6da17e..b343f63 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/CalendarDuartionFromDateDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/CalendarDuartionFromDateDescriptor.java
@@ -187,8 +187,9 @@
 
                                 if (day < 0) {
                                     boolean isLeapYear = calInstanct.isLeapYear(year1);
-                                    day += (isLeapYear) ? (GregorianCalendarSystem.DAYS_OF_MONTH_LEAP[month1 - 2])
-                                            : (GregorianCalendarSystem.DAYS_OF_MONTH_ORDI[month1 - 2]);
+                                    // need to "borrow" the days in previous month to make the day positive; when month is 1 (Jan), Dec will be borrowed
+                                    day += (isLeapYear) ? (GregorianCalendarSystem.DAYS_OF_MONTH_LEAP[(12 + month1 - 2) % 12])
+                                            : (GregorianCalendarSystem.DAYS_OF_MONTH_ORDI[(12 + month1 - 2) % 12]);
                                     month -= 1;
                                 }
 
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/CalendarDurationFromDateTimeDescriptor.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/CalendarDurationFromDateTimeDescriptor.java
index e09f1da..a934473 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/CalendarDurationFromDateTimeDescriptor.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/temporal/CalendarDurationFromDateTimeDescriptor.java
@@ -201,8 +201,9 @@
 
                                 if (day < 0) {
                                     boolean isLeapYear = calInstanct.isLeapYear(year1);
-                                    day += (isLeapYear) ? (GregorianCalendarSystem.DAYS_OF_MONTH_LEAP[month1 - 2])
-                                            : (GregorianCalendarSystem.DAYS_OF_MONTH_ORDI[month1 - 2]);
+                                    // need to "borrow" the days in previous month to make the day positive; when month is 1 (Jan), Dec will be borrowed
+                                    day += (isLeapYear) ? (GregorianCalendarSystem.DAYS_OF_MONTH_LEAP[(12 + month1 - 2) % 12])
+                                            : (GregorianCalendarSystem.DAYS_OF_MONTH_ORDI[(12 + month1 - 2) % 12]);
                                     month -= 1;
                                 }
 
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/formats/NonTaggedDataFormat.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/formats/NonTaggedDataFormat.java
index 2c81b7c..a5cb0f1 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/formats/NonTaggedDataFormat.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/formats/NonTaggedDataFormat.java
@@ -21,6 +21,7 @@
 import edu.uci.ics.asterix.formats.nontagged.AqlBinaryIntegerInspector;
 import edu.uci.ics.asterix.formats.nontagged.AqlJSONPrinterFactoryProvider;
 import edu.uci.ics.asterix.formats.nontagged.AqlNormalizedKeyComputerFactoryProvider;
+import edu.uci.ics.asterix.formats.nontagged.AqlPredicateEvaluatorFactoryProvider;
 import edu.uci.ics.asterix.formats.nontagged.AqlPrinterFactoryProvider;
 import edu.uci.ics.asterix.formats.nontagged.AqlSerializerDeserializerProvider;
 import edu.uci.ics.asterix.formats.nontagged.AqlTypeTraitProvider;
@@ -149,6 +150,7 @@
 import edu.uci.ics.asterix.runtime.evaluators.functions.NotNullDescriptor;
 import edu.uci.ics.asterix.runtime.evaluators.functions.NumericAbsDescriptor;
 import edu.uci.ics.asterix.runtime.evaluators.functions.NumericAddDescriptor;
+import edu.uci.ics.asterix.runtime.evaluators.functions.NumericCaretDescriptor;
 import edu.uci.ics.asterix.runtime.evaluators.functions.NumericCeilingDescriptor;
 import edu.uci.ics.asterix.runtime.evaluators.functions.NumericDivideDescriptor;
 import edu.uci.ics.asterix.runtime.evaluators.functions.NumericFloorDescriptor;
@@ -273,6 +275,7 @@
 import edu.uci.ics.hyracks.algebricks.runtime.evaluators.ColumnAccessEvalFactory;
 import edu.uci.ics.hyracks.algebricks.runtime.evaluators.ConstantEvalFactory;
 import edu.uci.ics.hyracks.api.dataflow.value.INullWriterFactory;
+import edu.uci.ics.hyracks.api.dataflow.value.IPredicateEvaluatorFactoryProvider;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
 import edu.uci.ics.hyracks.dataflow.common.data.parsers.DoubleParserFactory;
@@ -347,6 +350,7 @@
         temp.add(NumericMultiplyDescriptor.FACTORY);
         temp.add(NumericSubtractDescriptor.FACTORY);
         temp.add(NumericModuloDescriptor.FACTORY);
+        temp.add(NumericCaretDescriptor.FACTORY);
         temp.add(IsNullDescriptor.FACTORY);
         temp.add(NotDescriptor.FACTORY);
         temp.add(LenDescriptor.FACTORY);
@@ -935,4 +939,9 @@
         return AqlBinaryHashFunctionFamilyProvider.INSTANCE;
     }
 
+	@Override
+	public IPredicateEvaluatorFactoryProvider getPredicateEvaluatorFactoryProvider() {
+		return AqlPredicateEvaluatorFactoryProvider.INSTANCE;
+	}
+
 }
diff --git a/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMBTreeLocalResourceMetadata.java b/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMBTreeLocalResourceMetadata.java
index e06b5df..c3f9747 100644
--- a/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMBTreeLocalResourceMetadata.java
+++ b/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMBTreeLocalResourceMetadata.java
@@ -6,6 +6,7 @@
 import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
 import edu.uci.ics.hyracks.api.dataflow.value.ITypeTraits;
 import edu.uci.ics.hyracks.api.io.FileReference;
+import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
 import edu.uci.ics.hyracks.storage.am.common.api.IInMemoryFreePageManager;
 import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexMetaDataFrameFactory;
 import edu.uci.ics.hyracks.storage.am.common.frames.LIFOMetaDataFrameFactory;
@@ -27,14 +28,27 @@
     private final int[] bloomFilterKeyFields;
     private final int memPageSize;
     private final int memNumPages;
+    private FileSplit[] fileSplits;
+    private int ioDeviceID;
 
     public LSMBTreeLocalResourceMetadata(ITypeTraits[] typeTraits, IBinaryComparatorFactory[] cmpFactories,
-            int[] bloomFilterKeyFields, boolean isPrimary, int memPageSize, int memNumPages) {
+            int[] bloomFilterKeyFields, boolean isPrimary, int memPageSize, int memNumPages, FileSplit[] fileSplits) {
         this.typeTraits = typeTraits;
         this.cmpFactories = cmpFactories;
         this.bloomFilterKeyFields = bloomFilterKeyFields;
         this.memPageSize = memPageSize;
         this.memNumPages = memNumPages;
+        this.fileSplits = fileSplits;
+    }
+
+    public LSMBTreeLocalResourceMetadata(ITypeTraits[] typeTraits, IBinaryComparatorFactory[] cmpFactories,
+            int[] bloomFilterKeyFields, boolean isPrimary, int memPageSize, int memNumPages, int ioDeviceID) {
+        this.typeTraits = typeTraits;
+        this.cmpFactories = cmpFactories;
+        this.bloomFilterKeyFields = bloomFilterKeyFields;
+        this.memPageSize = memPageSize;
+        this.memNumPages = memNumPages;
+        this.ioDeviceID = ioDeviceID;
     }
 
     @Override
@@ -45,13 +59,13 @@
                 memNumPages, new TransientFileMapManager());
         ITreeIndexMetaDataFrameFactory metaDataFrameFactory = new LIFOMetaDataFrameFactory();
         IInMemoryFreePageManager memFreePageManager = new InMemoryFreePageManager(memNumPages, metaDataFrameFactory);
-        LSMBTree lsmBTree = LSMBTreeUtils.createLSMTree(memBufferCache, memFreePageManager,
-                runtimeContextProvider.getIOManager(), file, runtimeContextProvider.getBufferCache(),
-                runtimeContextProvider.getFileMapManager(), typeTraits, cmpFactories, bloomFilterKeyFields,
-                runtimeContextProvider.getBloomFilterFalsePositiveRate(), runtimeContextProvider.getLSMMergePolicy(),
-                runtimeContextProvider.getLSMBTreeOperationTrackerFactory(),
-                runtimeContextProvider.getLSMIOScheduler(),
-                runtimeContextProvider.getLSMBTreeIOOperationCallbackProvider(), partition);
+        LSMBTree lsmBTree = LSMBTreeUtils.createLSMTree(memBufferCache, memFreePageManager, runtimeContextProvider
+                .getIOManager(), file, runtimeContextProvider.getBufferCache(), runtimeContextProvider
+                .getFileMapManager(), typeTraits, cmpFactories, bloomFilterKeyFields, runtimeContextProvider
+                .getBloomFilterFalsePositiveRate(), runtimeContextProvider.getLSMMergePolicy(), runtimeContextProvider
+                .getLSMBTreeOperationTrackerFactory(), runtimeContextProvider.getLSMIOScheduler(),
+                runtimeContextProvider.getLSMBTreeIOOperationCallbackProvider(), fileSplits == null ? ioDeviceID
+                        : fileSplits[partition].getIODeviceId());
         return lsmBTree;
     }
 
diff --git a/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMInvertedIndexLocalResourceMetadata.java b/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMInvertedIndexLocalResourceMetadata.java
index d56c6ee..89a32c5 100644
--- a/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMInvertedIndexLocalResourceMetadata.java
+++ b/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMInvertedIndexLocalResourceMetadata.java
@@ -4,6 +4,7 @@
 import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
 import edu.uci.ics.hyracks.api.dataflow.value.ITypeTraits;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
 import edu.uci.ics.hyracks.storage.am.common.api.IInMemoryFreePageManager;
 import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexMetaDataFrameFactory;
 import edu.uci.ics.hyracks.storage.am.common.api.IndexException;
@@ -28,11 +29,12 @@
     private final int memPageSize;
     private final int memNumPages;
     private final boolean isPartitioned;
+    private final FileSplit[] fileSplits;
 
     public LSMInvertedIndexLocalResourceMetadata(ITypeTraits[] invListTypeTraits,
             IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
             IBinaryComparatorFactory[] tokenCmpFactories, IBinaryTokenizerFactory tokenizerFactory, int memPageSize,
-            int memNumPages, boolean isPartitioned) {
+            int memNumPages, boolean isPartitioned, FileSplit[] fileSplits) {
         this.invListTypeTraits = invListTypeTraits;
         this.invListCmpFactories = invListCmpFactories;
         this.tokenTypeTraits = tokenTypeTraits;
@@ -41,6 +43,7 @@
         this.memPageSize = memPageSize;
         this.memNumPages = memNumPages;
         this.isPartitioned = isPartitioned;
+        this.fileSplits = fileSplits;
     }
 
     @Override
@@ -62,7 +65,8 @@
                         runtimeContextProvider.getLSMMergePolicy(),
                         runtimeContextProvider.getLSMInvertedIndexOperationTrackerFactory(),
                         runtimeContextProvider.getLSMIOScheduler(),
-                        runtimeContextProvider.getLSMInvertedIndexIOOperationCallbackProvider(), partition);
+                        runtimeContextProvider.getLSMInvertedIndexIOOperationCallbackProvider(),
+                        fileSplits[partition].getIODeviceId());
             } else {
                 return InvertedIndexUtils.createLSMInvertedIndex(memBufferCache, memFreePageManager,
                         runtimeContextProvider.getFileMapManager(), invListTypeTraits, invListCmpFactories,
@@ -72,7 +76,8 @@
                         runtimeContextProvider.getLSMMergePolicy(),
                         runtimeContextProvider.getLSMInvertedIndexOperationTrackerFactory(),
                         runtimeContextProvider.getLSMIOScheduler(),
-                        runtimeContextProvider.getLSMInvertedIndexIOOperationCallbackProvider(), partition);
+                        runtimeContextProvider.getLSMInvertedIndexIOOperationCallbackProvider(),
+                        fileSplits[partition].getIODeviceId());
             }
         } catch (IndexException e) {
             throw new HyracksDataException(e);
diff --git a/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMRTreeLocalResourceMetadata.java b/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMRTreeLocalResourceMetadata.java
index 95fab45..2506697 100644
--- a/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMRTreeLocalResourceMetadata.java
+++ b/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/LSMRTreeLocalResourceMetadata.java
@@ -8,6 +8,7 @@
 import edu.uci.ics.hyracks.api.dataflow.value.ITypeTraits;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.api.io.FileReference;
+import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
 import edu.uci.ics.hyracks.storage.am.common.api.IInMemoryFreePageManager;
 import edu.uci.ics.hyracks.storage.am.common.api.IPrimitiveValueProviderFactory;
 import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexMetaDataFrameFactory;
@@ -33,11 +34,12 @@
     private final ILinearizeComparatorFactory linearizeCmpFactory;
     private final int memPageSize;
     private final int memNumPages;
+    private final FileSplit[] fileSplits;
 
     public LSMRTreeLocalResourceMetadata(ITypeTraits[] typeTraits, IBinaryComparatorFactory[] rtreeCmpFactories,
             IBinaryComparatorFactory[] btreeCmpFactories, IPrimitiveValueProviderFactory[] valueProviderFactories,
             RTreePolicyType rtreePolicyType, ILinearizeComparatorFactory linearizeCmpFactory, int memPageSize,
-            int memNumPages) {
+            int memNumPages, FileSplit[] fileSplits) {
         this.typeTraits = typeTraits;
         this.rtreeCmpFactories = rtreeCmpFactories;
         this.btreeCmpFactories = btreeCmpFactories;
@@ -46,6 +48,7 @@
         this.linearizeCmpFactory = linearizeCmpFactory;
         this.memPageSize = memPageSize;
         this.memNumPages = memNumPages;
+        this.fileSplits = fileSplits;
     }
 
     @Override
@@ -66,7 +69,8 @@
                     runtimeContextProvider.getLSMMergePolicy(),
                     runtimeContextProvider.getLSMRTreeOperationTrackerFactory(),
                     runtimeContextProvider.getLSMIOScheduler(),
-                    runtimeContextProvider.getLSMRTreeIOOperationCallbackProvider(), linearizeCmpFactory, partition);
+                    runtimeContextProvider.getLSMRTreeIOOperationCallbackProvider(), linearizeCmpFactory,
+                    fileSplits[partition].getIODeviceId());
         } catch (TreeIndexException e) {
             throw new HyracksDataException(e);
         }
diff --git a/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/PersistentLocalResourceRepository.java b/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/PersistentLocalResourceRepository.java
index 191bc8a..a8f129a 100644
--- a/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/PersistentLocalResourceRepository.java
+++ b/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/PersistentLocalResourceRepository.java
@@ -29,6 +29,7 @@
 import java.util.logging.Logger;
 
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.io.IODeviceHandle;
 import edu.uci.ics.hyracks.storage.common.file.ILocalResourceRepository;
 import edu.uci.ics.hyracks.storage.common.file.LocalResource;
 import edu.uci.ics.hyracks.storage.common.file.ResourceIdFactory;
@@ -36,26 +37,34 @@
 public class PersistentLocalResourceRepository implements ILocalResourceRepository {
 
     private static final Logger LOGGER = Logger.getLogger(PersistentLocalResourceRepository.class.getName());
-    private final String mountPoint;
-    private static final String ROOT_METADATA_DIRECTORY = "asterix_root_metadata/";
-    private static final String ROOT_METADATA_FILE_NAME_PREFIX = ".asterix_root_metadata_";
+    private final String[] mountPoints;
+    private static final String ROOT_METADATA_DIRECTORY = "asterix_root_metadata";
+    private static final String ROOT_METADATA_FILE_NAME_PREFIX = ".asterix_root_metadata";
     private static final long ROOT_LOCAL_RESOURCE_ID = -4321;
     private static final String METADATA_FILE_NAME = ".metadata";
     private Map<String, LocalResource> name2ResourceMap = new HashMap<String, LocalResource>();
     private Map<Long, LocalResource> id2ResourceMap = new HashMap<Long, LocalResource>();
-    private String rootMetadataFileName;
-    private String rootDir;
+    private final int numIODevices;
 
-    public PersistentLocalResourceRepository(String mountPoint) throws HyracksDataException {
-        File mountPointDir = new File(mountPoint);
-        if (!mountPointDir.exists()) {
-            throw new HyracksDataException(mountPointDir.getAbsolutePath() + "doesn't exist.");
+    public PersistentLocalResourceRepository(List<IODeviceHandle> devices) throws HyracksDataException {
+        numIODevices = devices.size();
+        this.mountPoints = new String[numIODevices];
+        for (int i = 0; i < numIODevices; i++) {
+            String mountPoint = devices.get(i).getPath().getPath();
+            File mountPointDir = new File(mountPoint);
+            if (!mountPointDir.exists()) {
+                throw new HyracksDataException(mountPointDir.getAbsolutePath() + "doesn't exist.");
+            }
+            if (!mountPoint.endsWith(System.getProperty("file.separator"))) {
+                mountPoints[i] = new String(mountPoint + System.getProperty("file.separator"));
+            } else {
+                mountPoints[i] = new String(mountPoint);
+            }
         }
-        if (!mountPoint.endsWith(System.getProperty("file.separator"))) {
-            this.mountPoint = new String(mountPoint + System.getProperty("file.separator"));
-        } else {
-            this.mountPoint = new String(mountPoint);
-        }
+    }
+
+    private String prepareRootMetaDataFileName(String mountPoint, String nodeId, int ioDeviceId) {
+        return mountPoint + ROOT_METADATA_DIRECTORY + "_" + nodeId + "_" + "iodevice" + ioDeviceId;
     }
 
     public void initialize(String nodeId, String rootDir, boolean isNewUniverse, ResourceIdFactory resourceIdFactory)
@@ -63,53 +72,40 @@
         if (LOGGER.isLoggable(Level.INFO)) {
             LOGGER.info("Initializing local resource repository ... ");
         }
-        LocalResource rootLocalResource = null;
 
-        //#. if the rootMetadataFile doesn't exist, create it and return.
-        rootMetadataFileName = new String(mountPoint + ROOT_METADATA_DIRECTORY + ROOT_METADATA_FILE_NAME_PREFIX
-                + nodeId);
-        File rootMetadataFile = new File(rootMetadataFileName);
         if (isNewUniverse) {
-            File rootMetadataDir = new File(mountPoint + ROOT_METADATA_DIRECTORY);
-            if (!rootMetadataDir.exists()) {
-                rootMetadataDir.mkdir();
-                if (LOGGER.isLoggable(Level.INFO)) {
-                    LOGGER.info("created the root-metadata-file's directory: " + rootMetadataDir.getAbsolutePath());
+            //#. if the rootMetadataFile doesn't exist, create it and return.
+            for (int i = 0; i < numIODevices; i++) {
+                String rootMetadataFileName = prepareRootMetaDataFileName(mountPoints[i], nodeId, i) + File.separator
+                        + ROOT_METADATA_FILE_NAME_PREFIX;
+                File rootMetadataFile = new File(rootMetadataFileName);
+
+                File rootMetadataDir = new File(prepareRootMetaDataFileName(mountPoints[i], nodeId, i));
+                if (!rootMetadataDir.exists()) {
+                    rootMetadataDir.mkdir();
+                    if (LOGGER.isLoggable(Level.INFO)) {
+                        LOGGER.info("created the root-metadata-file's directory: " + rootMetadataDir.getAbsolutePath());
+                    }
                 }
-            }
 
-            rootMetadataFile.delete();
-            if (rootDir.startsWith(System.getProperty("file.separator"))) {
-                this.rootDir = new String(mountPoint + rootDir.substring(System.getProperty("file.separator").length()));
-            } else {
-                this.rootDir = new String(mountPoint + rootDir);
-            }
-            rootLocalResource = new LocalResource(ROOT_LOCAL_RESOURCE_ID, rootMetadataFileName, 0, 0, this.rootDir);
-            insert(rootLocalResource);
-            if (LOGGER.isLoggable(Level.INFO)) {
-                LOGGER.info("created the root-metadata-file: " + rootMetadataFileName);
-            }
-            
-            if (LOGGER.isLoggable(Level.INFO)) {
-                LOGGER.info("Completed the initialization of the local resource repository");
-            }
-            return;
-        }
+                rootMetadataFile.delete();
+                String mountedRootDir;
+                if (rootDir.startsWith(System.getProperty("file.separator"))) {
+                    mountedRootDir = new String(mountPoints[i]
+                            + rootDir.substring(System.getProperty("file.separator").length()));
+                } else {
+                    mountedRootDir = new String(mountPoints[i] + rootDir);
+                }
+                LocalResource rootLocalResource = new LocalResource(ROOT_LOCAL_RESOURCE_ID, rootMetadataFileName, 0, 0,
+                        mountedRootDir);
+                insert(rootLocalResource, i);
+                if (LOGGER.isLoggable(Level.INFO)) {
+                    LOGGER.info("created the root-metadata-file: " + rootMetadataFileName);
+                }
 
-        //#. if the rootMetadataFile exists, read it and set this.rootDir.
-        rootLocalResource = readLocalResource(rootMetadataFile);
-        this.rootDir = (String) rootLocalResource.getResourceObject();
-        if (LOGGER.isLoggable(Level.INFO)) {
-            LOGGER.info("The root directory of the local resource repository is " + this.rootDir);
-        }
-
-        //#. load all local resources. 
-        File rootDirFile = new File(this.rootDir);
-        if (!rootDirFile.exists()) {
-            //rootDir may not exist if this node is not the metadata node and doesn't have any user data.
-            if (LOGGER.isLoggable(Level.INFO)) {
-                LOGGER.info("The root directory of the local resource repository doesn't exist: there is no local resource.");
-                LOGGER.info("Completed the initialization of the local resource repository");
+                if (LOGGER.isLoggable(Level.INFO)) {
+                    LOGGER.info("Completed the initialization of the local resource repository");
+                }
             }
             return;
         }
@@ -124,27 +120,60 @@
             }
         };
 
-        long maxResourceId = 0;
-        File[] dataverseFileList = rootDirFile.listFiles();
-        if (dataverseFileList == null) {
-            throw new HyracksDataException("Metadata dataverse doesn't exist.");
-        }
-        for (File dataverseFile : dataverseFileList) {
-            if (dataverseFile.isDirectory()) {
-                File[] indexFileList = dataverseFile.listFiles();
-                if (indexFileList != null) {
-                    for (File indexFile : indexFileList) {
-                        if (indexFile.isDirectory()) {
-                            File[] metadataFiles = indexFile.listFiles(filter);
-                            if (metadataFiles != null) {
-                                for (File metadataFile : metadataFiles) {
-                                    LocalResource localResource = readLocalResource(metadataFile);
-                                    id2ResourceMap.put(localResource.getResourceId(), localResource);
-                                    name2ResourceMap.put(localResource.getResourceName(), localResource);
-                                    maxResourceId = Math.max(localResource.getResourceId(), maxResourceId);
-                                    if (LOGGER.isLoggable(Level.INFO)) {
-                                        LOGGER.info("loaded local resource - [id: " + localResource.getResourceId()
-                                                + ", name: " + localResource.getResourceName() + "]");
+        for (int i = 0; i < numIODevices; i++) {
+            String rootMetadataFileName = prepareRootMetaDataFileName(mountPoints[i], nodeId, i) + File.separator
+                    + ROOT_METADATA_FILE_NAME_PREFIX;
+            File rootMetadataFile = new File(rootMetadataFileName);
+            //#. if the rootMetadataFile exists, read it and set this.rootDir.
+            LocalResource rootLocalResource = readLocalResource(rootMetadataFile);
+            String mountedRootDir = (String) rootLocalResource.getResourceObject();
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info("The root directory of the local resource repository is " + mountedRootDir);
+            }
+
+            //#. load all local resources. 
+            File rootDirFile = new File(mountedRootDir);
+            if (!rootDirFile.exists()) {
+                //rootDir may not exist if this node is not the metadata node and doesn't have any user data.
+                if (LOGGER.isLoggable(Level.INFO)) {
+                    LOGGER.info("The root directory of the local resource repository doesn't exist: there is no local resource.");
+                    LOGGER.info("Completed the initialization of the local resource repository");
+                }
+                continue;
+            }
+
+            long maxResourceId = 0;
+            File[] dataverseFileList = rootDirFile.listFiles();
+            if (dataverseFileList == null) {
+                throw new HyracksDataException("Metadata dataverse doesn't exist.");
+            }
+            for (File dataverseFile : dataverseFileList) {
+                if (dataverseFile.isDirectory()) {
+                    File[] indexFileList = dataverseFile.listFiles();
+                    if (indexFileList != null) {
+                        for (File indexFile : indexFileList) {
+                            if (indexFile.isDirectory()) {
+                                File[] ioDevicesList = indexFile.listFiles();
+                                if (ioDevicesList != null) {
+                                    for (File ioDeviceFile : ioDevicesList) {
+                                        if (ioDeviceFile.isDirectory()) {
+                                            File[] metadataFiles = ioDeviceFile.listFiles(filter);
+                                            if (metadataFiles != null) {
+                                                for (File metadataFile : metadataFiles) {
+                                                    LocalResource localResource = readLocalResource(metadataFile);
+                                                    id2ResourceMap.put(localResource.getResourceId(), localResource);
+                                                    name2ResourceMap
+                                                            .put(localResource.getResourceName(), localResource);
+                                                    maxResourceId = Math.max(localResource.getResourceId(),
+                                                            maxResourceId);
+                                                    if (LOGGER.isLoggable(Level.INFO)) {
+                                                        LOGGER.info("loaded local resource - [id: "
+                                                                + localResource.getResourceId() + ", name: "
+                                                                + localResource.getResourceName() + "]");
+                                                    }
+                                                }
+                                            }
+                                        }
                                     }
                                 }
                             }
@@ -152,11 +181,11 @@
                     }
                 }
             }
-        }
-        resourceIdFactory.initId(maxResourceId + 1);
-        if (LOGGER.isLoggable(Level.INFO)) {
-            LOGGER.info("The resource id factory is intialized with the value: " + (maxResourceId + 1));
-            LOGGER.info("Completed the initialization of the local resource repository");
+            resourceIdFactory.initId(maxResourceId + 1);
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info("The resource id factory is intialized with the value: " + (maxResourceId + 1));
+                LOGGER.info("Completed the initialization of the local resource repository");
+            }
         }
     }
 
@@ -171,7 +200,7 @@
     }
 
     @Override
-    public synchronized void insert(LocalResource resource) throws HyracksDataException {
+    public synchronized void insert(LocalResource resource, int ioDeviceId) throws HyracksDataException {
         long id = resource.getResourceId();
 
         if (id2ResourceMap.containsKey(id)) {
@@ -185,8 +214,10 @@
 
         FileOutputStream fos = null;
         ObjectOutputStream oosToFos = null;
+
         try {
-            fos = new FileOutputStream(getFileName(mountPoint, resource.getResourceName(), resource.getResourceId()));
+            fos = new FileOutputStream(getFileName(mountPoints[ioDeviceId], resource.getResourceName(),
+                    resource.getResourceId()));
             oosToFos = new ObjectOutputStream(fos);
             oosToFos.writeObject(resource);
             oosToFos.flush();
@@ -211,26 +242,26 @@
     }
 
     @Override
-    public synchronized void deleteResourceById(long id) throws HyracksDataException {
+    public synchronized void deleteResourceById(long id, int ioDeviceId) throws HyracksDataException {
         LocalResource resource = id2ResourceMap.get(id);
         if (resource == null) {
             throw new HyracksDataException("Resource doesn't exist");
         }
         id2ResourceMap.remove(id);
         name2ResourceMap.remove(resource.getResourceName());
-        File file = new File(getFileName(mountPoint, resource.getResourceName(), resource.getResourceId()));
+        File file = new File(getFileName(mountPoints[ioDeviceId], resource.getResourceName(), resource.getResourceId()));
         file.delete();
     }
 
     @Override
-    public synchronized void deleteResourceByName(String name) throws HyracksDataException {
+    public synchronized void deleteResourceByName(String name, int ioDeviceId) throws HyracksDataException {
         LocalResource resource = name2ResourceMap.get(name);
         if (resource == null) {
             throw new HyracksDataException("Resource doesn't exist");
         }
         id2ResourceMap.remove(resource.getResourceId());
         name2ResourceMap.remove(name);
-        File file = new File(getFileName(mountPoint, resource.getResourceName(), resource.getResourceId()));
+        File file = new File(getFileName(mountPoints[ioDeviceId], resource.getResourceName(), resource.getResourceId()));
         file.delete();
     }
 
diff --git a/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/PersistentLocalResourceRepositoryFactory.java b/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/PersistentLocalResourceRepositoryFactory.java
index c7efca5..f6847f9 100644
--- a/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/PersistentLocalResourceRepositoryFactory.java
+++ b/asterix-transactions/src/main/java/edu/uci/ics/asterix/transaction/management/resource/PersistentLocalResourceRepositoryFactory.java
@@ -14,11 +14,8 @@
  */
 package edu.uci.ics.asterix.transaction.management.resource;
 
-import java.util.List;
-
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.api.io.IIOManager;
-import edu.uci.ics.hyracks.api.io.IODeviceHandle;
 import edu.uci.ics.hyracks.storage.common.file.ILocalResourceRepository;
 import edu.uci.ics.hyracks.storage.common.file.ILocalResourceRepositoryFactory;
 
@@ -31,7 +28,6 @@
 
     @Override
     public ILocalResourceRepository createRepository() throws HyracksDataException {
-        List<IODeviceHandle> devices = ioManager.getIODevices();
-        return new PersistentLocalResourceRepository(devices.get(0).getPath().getPath());
+        return new PersistentLocalResourceRepository(ioManager.getIODevices());
     }
-}
+}
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index c313bd7..aa0bc82 100644
--- a/pom.xml
+++ b/pom.xml
@@ -135,14 +135,6 @@
 			<url>http://obelix.ics.uci.edu/nexus/content/repositories/algebricks-snapshots/</url>
 		</repository>
 	</repositories>
-    <dependencies>
-        <dependency>
-            <groupId>net.sourceforge.cobertura</groupId>
-            <artifactId>cobertura</artifactId>
-            <version>1.9.4</version>
-            <optional>true</optional>
-        </dependency>
-    </dependencies>
         <dependencyManagement>
     	<dependencies>
     		<dependency>