Fix the result reader initialization code in query result servlet to use new API and clear buffers after each read.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_stabilization_result_distribution@1237 eaa15691-b419-025a-1212-ee371bd00084
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/QueryResultAPIServlet.java b/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/QueryResultAPIServlet.java
index 5fd4f84..2b0aff4 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/QueryResultAPIServlet.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/api/http/servlet/QueryResultAPIServlet.java
@@ -28,7 +28,6 @@
 
 import edu.uci.ics.asterix.result.ResultReader;
 import edu.uci.ics.asterix.result.ResultUtils;
-import edu.uci.ics.asterix.runtime.formats.FormatUtils;
 import edu.uci.ics.hyracks.api.client.HyracksConnection;
 import edu.uci.ics.hyracks.api.client.IHyracksClientConnection;
 import edu.uci.ics.hyracks.api.dataset.ResultSetId;
@@ -66,7 +65,7 @@
             /* TODO(madhusudancs): We need to find a way to JSON serialize default format obtained from
              * metadataProvider in the AQLTranslator and store it as part of the result handle.
              */
-            ResultReader resultReader = new ResultReader(hcc, FormatUtils.getDefaultFormat());
+            ResultReader resultReader = new ResultReader(hcc);
             resultReader.open(jobId, rsId);
             buffer.clear();
             JSONObject jsonResponse = new JSONObject();
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 45b45f8..7248972 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
@@ -304,6 +304,7 @@
                         JSONArray results = new JSONArray();
                         while (resultReader.read(buffer) > 0) {
                             results.put(ResultUtils.getJSONFromBuffer(buffer, resultReader.getFrameTupleAccessor()));
+                            buffer.clear();
                         }
                         response.put("results", results);
                     }