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-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-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-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-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-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/functions/AbstractQuadStringStringEval.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/functions/AbstractQuadStringStringEval.java
index ce9ecd27..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/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/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);