Updated all the javadoc comments for java 1.8's new doclint.

The new JavaDocs now have a format checker in Java 1.8. The site would not 
build without these changes. If JavaDoc exists for a method certain attributes 
must exists (@param, @return, @throws, etc.). Also, any HTML must be formatted 
correctly. I also added a few ignore options to help clean up eclipse warnings.


Project: http://git-wip-us.apache.org/repos/asf/vxquery/repo
Commit: http://git-wip-us.apache.org/repos/asf/vxquery/commit/51a98938
Tree: http://git-wip-us.apache.org/repos/asf/vxquery/tree/51a98938
Diff: http://git-wip-us.apache.org/repos/asf/vxquery/diff/51a98938

Branch: refs/heads/site
Commit: 51a989382be8b5340ae84214dff9dc16807234c6
Parents: 4684567
Author: Preston Carman <[email protected]>
Authored: Thu Oct 29 10:56:50 2015 -0700
Committer: Preston Carman <[email protected]>
Committed: Thu Oct 29 10:56:50 2015 -0700

----------------------------------------------------------------------
 .../VXQueryComparatorFactoryProvider.java       |   1 +
 .../compiler/rewriter/RewriteRuleset.java       |   5 +
 .../rewriter/rules/AbstractCollectionRule.java  |  11 +-
 ...tAssignSortDistinctNodesToOperatorsRule.java |   7 +-
 .../rewriter/rules/IntroduceCollectionRule.java |  20 +-
 .../rules/PushChildIntoDataScanRule.java        |  20 +-
 .../RemoveUnusedSortDistinctNodesRule.java      |  48 ++---
 .../rules/RemoveUnusedUnnestIterateRule.java    |  20 +-
 .../rules/SetCollectionDataSourceRule.java      |   9 +-
 .../ExtractFunctionsFromJoinConditionRule.java  |  15 +-
 .../rules/util/CardinalityRuleToolbox.java      |  14 +-
 .../rewriter/rules/util/ExpressionToolbox.java  |  12 ++
 .../apache/vxquery/datamodel/util/DateTime.java |  44 +++-
 .../org/apache/vxquery/functions/Signature.java |   2 +
 .../functions/cast/AbstractCastToOperation.java |  22 +-
 .../cast/CastToBase64BinaryOperation.java       |   1 +
 .../castable/AbstractCastableAsOperation.java   |   6 +-
 .../error/FnErrorScalarEvaluatorFactory.java    |  16 +-
 .../FnSubsequenceScalarEvaluatorFactory.java    |   4 +-
 ...stractDescendantPathStepScalarEvaluator.java |   4 +-
 .../step/ChildPathStepOperatorDescriptor.java   |  16 ++
 .../functions/step/ChildPathStepUnnesting.java  |  12 +-
 .../step/DescendantOrSelfPathStepUnnesting.java |  13 +-
 .../runtime/functions/util/FunctionHelper.java  |  33 ++-
 .../apache/vxquery/types/AbstractNodeType.java  |   2 +
 .../org/apache/vxquery/types/AnyItemType.java   |   1 +
 .../org/apache/vxquery/types/AnyNodeType.java   |   1 +
 .../org/apache/vxquery/types/AnySimpleType.java |   1 +
 .../java/org/apache/vxquery/types/AnyType.java  |   1 +
 .../org/apache/vxquery/types/AttributeType.java |   2 +
 .../org/apache/vxquery/types/CommentType.java   |   1 +
 .../org/apache/vxquery/types/DocumentType.java  |   2 +
 .../org/apache/vxquery/types/ElementType.java   |   2 +
 .../apache/vxquery/types/EmptySequenceType.java |   1 +
 .../java/org/apache/vxquery/types/NoneType.java |   1 +
 .../types/ProcessingInstructionType.java        |   2 +
 .../java/org/apache/vxquery/types/TextType.java |   1 +
 .../xmlquery/query/XMLQueryCompiler.java        |   2 +-
 .../org/apache/vxquery/xtest/TestRunner.java    |  25 +--
 .../vxquery/xtest/util/DiskPerformance.java     | 215 -------------------
 .../xtest/util/tests/AbstractDiskTest.java      |  90 --------
 .../tests/BufferedParsedCharacterStream.java    |  45 ----
 .../tests/BufferedReaderBufferedStream.java     |  48 -----
 .../xtest/util/tests/BufferedReaderStream.java  |  46 ----
 .../xtest/util/tests/BufferedStream.java        |  45 ----
 .../vxquery/xtest/util/tests/IDiskTest.java     |  31 ---
 .../util/tests/ParsedBufferedByteStream.java    |  48 -----
 .../tests/ParsedBufferedCharacterStream.java    |  48 -----
 .../xtest/util/tests/ParsedByteStream.java      |  46 ----
 .../xtest/util/tests/ParsedCharacterStream.java |  47 ----
 .../xtest/util/tests/ReaderBufferedStream.java  |  46 ----
 .../vxquery/xtest/util/tests/ReaderStream.java  |  45 ----
 .../apache/vxquery/xtest/util/tests/Stream.java |  44 ----
 53 files changed, 262 insertions(+), 982 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/algebricks/VXQueryComparatorFactoryProvider.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/algebricks/VXQueryComparatorFactoryProvider.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/algebricks/VXQueryComparatorFactoryProvider.java
index 2643dc5..b7196cf 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/algebricks/VXQueryComparatorFactoryProvider.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/algebricks/VXQueryComparatorFactoryProvider.java
@@ -33,6 +33,7 @@ public class VXQueryComparatorFactoryProvider implements 
IBinaryComparatorFactor
     private static class BinaryComparatorFactory implements 
IBinaryComparatorFactory {
         private static final long serialVersionUID = 1L;
 
+        @SuppressWarnings("unused")
         private final boolean ascending;
 
         public BinaryComparatorFactory(Object type, boolean ascending) {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/RewriteRuleset.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/RewriteRuleset.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/RewriteRuleset.java
index 075fb3e..6f09543 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/RewriteRuleset.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/RewriteRuleset.java
@@ -90,6 +90,7 @@ import 
org.apache.hyracks.algebricks.rewriter.rules.SubplanOutOfGroupRule;
 public class RewriteRuleset {
     /**
      * Optimizations specific to XQuery.
+     * @return List of algebraic rewrite rules.
      */
     public final static List<IAlgebraicRewriteRule> 
buildPathStepNormalizationRuleCollection() {
         List<IAlgebraicRewriteRule> normalization = new 
LinkedList<IAlgebraicRewriteRule>();
@@ -146,6 +147,7 @@ public class RewriteRuleset {
 
     /**
      * Optimizations specific to XQuery.
+     * @return List of algebraic rewrite rules.
      */
     public final static List<IAlgebraicRewriteRule> 
buildXQueryNormalizationRuleCollection() {
         List<IAlgebraicRewriteRule> normalization = new 
LinkedList<IAlgebraicRewriteRule>();
@@ -170,6 +172,7 @@ public class RewriteRuleset {
 
     /**
      * Remove expressions known to be redundant.
+     * @return List of algebraic rewrite rules.
      */
     public final static List<IAlgebraicRewriteRule> 
buildInlineRedundantExpressionNormalizationRuleCollection() {
         List<IAlgebraicRewriteRule> normalization = new 
LinkedList<IAlgebraicRewriteRule>();
@@ -188,6 +191,7 @@ public class RewriteRuleset {
 
     /**
      * When a nested data sources exist, convert the plan to use the join 
operator.
+     * @return List of algebraic rewrite rules.
      */
     public final static List<IAlgebraicRewriteRule> 
buildNestedDataSourceRuleCollection() {
         List<IAlgebraicRewriteRule> xquery = new 
LinkedList<IAlgebraicRewriteRule>();
@@ -211,6 +215,7 @@ public class RewriteRuleset {
 
     /**
      * Unnest more complex structures.
+     * @return List of algebraic rewrite rules.
      */
     public final static List<IAlgebraicRewriteRule> 
buildUnnestingRuleCollection() {
         List<IAlgebraicRewriteRule> xquery = new 
LinkedList<IAlgebraicRewriteRule>();

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/AbstractCollectionRule.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/AbstractCollectionRule.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/AbstractCollectionRule.java
index f343b41..53011d2 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/AbstractCollectionRule.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/AbstractCollectionRule.java
@@ -55,8 +55,12 @@ public abstract class AbstractCollectionRule implements 
IAlgebraicRewriteRule {
 
     /**
      * Get the constant value for the collection. Return null for not a 
collection.
+     *
+     * @param opRef
+     *            Logical operator
+     * @return collection name
      */
-    protected String getCollectionName(Mutable<ILogicalOperator> opRef) throws 
AlgebricksException {
+    protected String getCollectionName(Mutable<ILogicalOperator> opRef) {
         VXQueryConstantValue constantValue;
 
         AbstractLogicalOperator op = (AbstractLogicalOperator) 
opRef.getValue();
@@ -114,9 +118,8 @@ public abstract class AbstractCollectionRule implements 
IAlgebraicRewriteRule {
         if (tvp.getTag() == ValueTag.XS_STRING_TAG) {
             tvp.getValue(stringp);
             try {
-                bbis.setByteBuffer(
-                        
ByteBuffer.wrap(Arrays.copyOfRange(stringp.getByteArray(), 
stringp.getStartOffset(),
-                                stringp.getLength() + 
stringp.getStartOffset())), 0);
+                
bbis.setByteBuffer(ByteBuffer.wrap(Arrays.copyOfRange(stringp.getByteArray(), 
stringp.getStartOffset(),
+                        stringp.getLength() + stringp.getStartOffset())), 0);
                 collectionName = di.readUTF();
             } catch (IOException e) {
                 e.printStackTrace();

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/ConvertAssignSortDistinctNodesToOperatorsRule.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/ConvertAssignSortDistinctNodesToOperatorsRule.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/ConvertAssignSortDistinctNodesToOperatorsRule.java
index f70e656..f928209 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/ConvertAssignSortDistinctNodesToOperatorsRule.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/ConvertAssignSortDistinctNodesToOperatorsRule.java
@@ -21,8 +21,6 @@ import java.util.List;
 
 import org.apache.commons.lang3.mutable.Mutable;
 import org.apache.commons.lang3.mutable.MutableObject;
-import org.apache.vxquery.functions.BuiltinOperators;
-
 import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
 import org.apache.hyracks.algebricks.common.utils.Pair;
 import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression;
@@ -47,6 +45,7 @@ import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.OrderOperato
 import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.SubplanOperator;
 import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator;
 import org.apache.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
+import org.apache.vxquery.functions.BuiltinOperators;
 
 public class ConvertAssignSortDistinctNodesToOperatorsRule implements 
IAlgebraicRewriteRule {
 
@@ -59,6 +58,7 @@ public class ConvertAssignSortDistinctNodesToOperatorsRule 
implements IAlgebraic
      * Find where a sort distinct nodes is being used and not required based 
on input parameters.
      * Search pattern: assign [function-call: 
sort-distinct-nodes-asc-or-atomics]
      */
+    @SuppressWarnings("unused")
     @Override
     public boolean rewritePost(Mutable<ILogicalOperator> opRef, 
IOptimizationContext context) {
         Mutable<ILogicalOperator> nextOperatorRef;
@@ -160,7 +160,7 @@ public class ConvertAssignSortDistinctNodesToOperatorsRule 
implements IAlgebraic
         Mutable<ILogicalExpression> unnestVariableRef = new 
MutableObject<ILogicalExpression>(
                 new VariableReferenceExpression(unnestVariable));
         aggregateSequenceArgs.add(unnestVariableRef);
-        
+
         List<Mutable<ILogicalExpression>> exprs = new 
ArrayList<Mutable<ILogicalExpression>>();
         ILogicalExpression aggregateExp = new 
AggregateFunctionCallExpression(BuiltinOperators.SEQUENCE, false,
                 aggregateSequenceArgs);
@@ -199,6 +199,7 @@ public class ConvertAssignSortDistinctNodesToOperatorsRule 
implements IAlgebraic
         }
     }
 
+    @SuppressWarnings("unused")
     private OrderOperator getOrderOperator(Mutable<ILogicalExpression> 
variableRef) {
         List<Pair<IOrder, Mutable<ILogicalExpression>>> orderArgs = new 
ArrayList<Pair<IOrder, Mutable<ILogicalExpression>>>();
         orderArgs.add(new Pair<IOrder, 
Mutable<ILogicalExpression>>(OrderOperator.ASC_ORDER, variableRef));

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/IntroduceCollectionRule.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/IntroduceCollectionRule.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/IntroduceCollectionRule.java
index c7dd2ee..cc857a1 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/IntroduceCollectionRule.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/IntroduceCollectionRule.java
@@ -36,33 +36,33 @@ import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.UnnestOperat
  * parallelization. The rule searches for unnest followed by an assign for the
  * collection function expression. When this plan block exists the data source
  * scan operator added in the blocks place.
- * 
+ *
  * <pre>
  * Before
- * 
+ *
  *   plan__parent
  *   UNNEST( $v2 : exp($v1) )
  *   ASSIGN( $v1 : collection( $v0 ) )
  *   ASSIGN( $v0 : constant )
  *   plan__child
- *   
- * After 
- * 
+ *
+ * After
+ *
  *   plan__parent
  *   UNNEST( $v2 : exp($v1) )
  *   DATASCAN( collection( $v0 ) , $v1 )
  *   plan__child
- *   
- *   Where DATASCAN operator is configured to use the collection( $v0) for 
- *   data represented by the "constant" and $v1 represents the xml document 
+ *
+ *   Where DATASCAN operator is configured to use the collection( $v0) for
+ *   data represented by the "constant" and $v1 represents the xml document
  *   nodes from the collection.
  * </pre>
- * 
+ *
  * @author prestonc
  */
 public class IntroduceCollectionRule extends AbstractCollectionRule {
     @Override
-    public boolean rewritePre(Mutable<ILogicalOperator> opRef, 
IOptimizationContext context) throws AlgebricksException {
+    public boolean rewritePre(Mutable<ILogicalOperator> opRef, 
IOptimizationContext context) {
         VXQueryOptimizationContext vxqueryContext = 
(VXQueryOptimizationContext) context;
         String collectionName = getCollectionName(opRef);
 

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/PushChildIntoDataScanRule.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/PushChildIntoDataScanRule.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/PushChildIntoDataScanRule.java
index 3ad068d..7ffcd90 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/PushChildIntoDataScanRule.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/PushChildIntoDataScanRule.java
@@ -20,24 +20,22 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.apache.commons.lang3.mutable.Mutable;
-import org.apache.vxquery.compiler.rewriter.VXQueryOptimizationContext;
-import org.apache.vxquery.compiler.rewriter.rules.util.ExpressionToolbox;
-import org.apache.vxquery.context.StaticContext;
-import org.apache.vxquery.functions.BuiltinOperators;
-import org.apache.vxquery.metadata.VXQueryCollectionDataSource;
-import org.apache.vxquery.metadata.VXQueryMetadataProvider;
-import org.apache.vxquery.types.ElementType;
-
 import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
 import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression;
 import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator;
 import org.apache.hyracks.algebricks.core.algebra.base.IOptimizationContext;
 import org.apache.hyracks.algebricks.core.algebra.base.LogicalOperatorTag;
-import org.apache.hyracks.algebricks.core.algebra.metadata.IMetadataProvider;
 import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator;
 import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.AssignOperator;
 import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.DataSourceScanOperator;
 import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator;
+import org.apache.vxquery.compiler.rewriter.VXQueryOptimizationContext;
+import org.apache.vxquery.compiler.rewriter.rules.util.ExpressionToolbox;
+import org.apache.vxquery.context.StaticContext;
+import org.apache.vxquery.functions.BuiltinOperators;
+import org.apache.vxquery.metadata.VXQueryCollectionDataSource;
+import org.apache.vxquery.metadata.VXQueryMetadataProvider;
+import org.apache.vxquery.types.ElementType;
 
 /**
  * The rule searches for an unnest operator immediately following a data scan
@@ -72,8 +70,8 @@ public class PushChildIntoDataScanRule extends 
AbstractUsedVariablesProcessingRu
     protected boolean processOperator(Mutable<ILogicalOperator> opRef, 
IOptimizationContext context)
             throws AlgebricksException {
         if (dCtx == null) {
-            IMetadataProvider metadataProvider = ((VXQueryOptimizationContext) 
context).getMetadataProvider();
-            dCtx = ((VXQueryMetadataProvider) 
metadataProvider).getStaticContext();
+            VXQueryOptimizationContext vxqueryCtx = 
(VXQueryOptimizationContext) context;
+            dCtx = ((VXQueryMetadataProvider) 
vxqueryCtx.getMetadataProvider()).getStaticContext();
         }
         AbstractLogicalOperator op1 = (AbstractLogicalOperator) 
opRef.getValue();
         if (op1.getOperatorTag() != LogicalOperatorTag.UNNEST) {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/RemoveUnusedSortDistinctNodesRule.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/RemoveUnusedSortDistinctNodesRule.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/RemoveUnusedSortDistinctNodesRule.java
index 55c8de0..69940ad 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/RemoveUnusedSortDistinctNodesRule.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/RemoveUnusedSortDistinctNodesRule.java
@@ -51,43 +51,43 @@ import 
org.apache.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
  * The rule searches for where the xquery sort distinct function is used and
  * determines if the sort and distinct is necessary. The plan is modified if
  * any of these items is not required.
- * 
+ *
  * <pre>
  * Before
- * 
+ *
  *   plan__parent
  *   ASSIGN( $v1 : sort_distinct_nodes_asc_or_atomics( $v0 ) )
  *   plan__child
- *   
+ *
  *   Where $v0 is a variable defined in plan__child.
- *   
- * After 
- * 
- *   if ( $v0 is unique nodes && $v0 is in document order )
- *     
+ *
+ * After
+ *
+ *   if ( $v0 is unique nodes &amp;&amp; $v0 is in document order )
+ *
  *     plan__parent
  *     ASSIGN( $v1 : $v0 )
  *     plan__child
- *     
- *   if ( $v0 is NOT unique nodes && $v0 is in document order )
- *   
+ *
+ *   if ( $v0 is NOT unique nodes &amp;&amp; $v0 is in document order )
+ *
  *     plan__parent
  *     ASSIGN( $v1 : distinct_nodes_or_atomics( $v0 ) )
  *     plan__child
- *     
- *   if ( $v0 is unique nodes && $v0 is NOT in document order )
- *   
+ *
+ *   if ( $v0 is unique nodes &amp;&amp; $v0 is NOT in document order )
+ *
  *     plan__parent
  *     ASSIGN( $v1 : sort_nodes_asc( $v0 ) )
  *     plan__child
- *     
- *   if ( $v0 is NOT unique nodes && $v0 is NOT in document order )
- *   
+ *
+ *   if ( $v0 is NOT unique nodes &amp;&amp; $v0 is NOT in document order )
+ *
  *     plan__parent
  *     ASSIGN( $v1 : sort_distinct_nodes_asc_or_atomics( $v0 ) )
  *     plan__child
  * </pre>
- * 
+ *
  * @author prestonc
  */
 
@@ -123,7 +123,7 @@ public class RemoveUnusedSortDistinctNodesRule implements 
IAlgebraicRewriteRule
         int variableId = 
getOperatorSortDistinctNodesAscOrAtomicsArgumentVariableId(opRef);
         if (variableId > 0) {
             // Find the function expression.
-            // All the checks for these variable assigns and casting were done 
in the 
+            // All the checks for these variable assigns and casting were done 
in the
             // getOperatorSortDistinctNodesAscOrAtomicsArgumentVariableId 
function.
             AssignOperator assign = (AssignOperator) op;
             ILogicalExpression logicalExpression = (ILogicalExpression) 
assign.getExpressions().get(0).getValue();
@@ -194,7 +194,7 @@ public class RemoveUnusedSortDistinctNodesRule implements 
IAlgebraicRewriteRule
 
     /**
      * Get the DocumentOrder variable map of the parent operator.
-     * 
+     *
      * @param op
      * @param vxqueryContext
      * @return
@@ -217,10 +217,10 @@ public class RemoveUnusedSortDistinctNodesRule implements 
IAlgebraicRewriteRule
 
     /**
      * Get the UniqueNodes variable map of the parent operator.
-     * 
+     *
      * @param op
      * @param vxqueryContext
-     * @return
+     * @return Hash map of variables to unique nodes.
      */
     private HashMap<Integer, UniqueNodes> 
getProducerUniqueNodesVariableMap(ILogicalOperator op,
             VXQueryOptimizationContext vxqueryContext) {
@@ -297,7 +297,7 @@ public class RemoveUnusedSortDistinctNodesRule implements 
IAlgebraicRewriteRule
 
     /**
      * Sets all the variables to DocumentOrder.
-     * 
+     *
      * @param documentOrderVariables
      * @param documentOrder
      */
@@ -310,7 +310,7 @@ public class RemoveUnusedSortDistinctNodesRule implements 
IAlgebraicRewriteRule
 
     /**
      * Sets all the variables to UniqueNodes.
-     * 
+     *
      * @param uniqueNodesVariables
      * @param uniqueNodes
      */

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/RemoveUnusedUnnestIterateRule.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/RemoveUnusedUnnestIterateRule.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/RemoveUnusedUnnestIterateRule.java
index 946f854..1da93b9 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/RemoveUnusedUnnestIterateRule.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/RemoveUnusedUnnestIterateRule.java
@@ -17,10 +17,6 @@
 package org.apache.vxquery.compiler.rewriter.rules;
 
 import org.apache.commons.lang3.mutable.Mutable;
-import 
org.apache.vxquery.compiler.rewriter.rules.propagationpolicies.documentorder.DocumentOrder;
-import 
org.apache.vxquery.compiler.rewriter.rules.propagationpolicies.uniquenodes.UniqueNodes;
-import org.apache.vxquery.functions.BuiltinOperators;
-
 import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
 import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression;
 import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator;
@@ -33,32 +29,32 @@ import 
org.apache.hyracks.algebricks.core.algebra.expressions.VariableReferenceE
 import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator;
 import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractScanOperator;
 import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.AssignOperator;
-import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.DataSourceScanOperator;
 import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator;
+import org.apache.vxquery.functions.BuiltinOperators;
 
 /**
  * The rule searches for an unnest operator (1) immediately following an unnest
  * or data scan operator (2). If the variable is only used in unnest (1) then
  * unnest (1) can be removed.
- * 
+ *
  * <pre>
- * Before 
- * 
+ * Before
+ *
  *   plan__parent
  *   UNNEST( $v2 : iterate( $v1 ) )
  *   UNNEST( $v1 : $v )
  *   plan__child
- *   
+ *
  *   Where $v1 is not used in plan__parent.
- *   
+ *
  * After
- * 
+ *
  *   plan__parent
  *   ASSIGN( $v2 : $v1 )
  *   UNNEST( $v1 : $v )
  *   plan__child
  * </pre>
- * 
+ *
  * @author prestonc
  */
 public class RemoveUnusedUnnestIterateRule extends 
AbstractUsedVariablesProcessingRule {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/SetCollectionDataSourceRule.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/SetCollectionDataSourceRule.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/SetCollectionDataSourceRule.java
index 936a12a..f4ebde7 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/SetCollectionDataSourceRule.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/SetCollectionDataSourceRule.java
@@ -25,11 +25,16 @@ import 
org.apache.hyracks.algebricks.core.algebra.base.IOptimizationContext;
 
 /**
  * Find the collection functions and generate the data source objects.
- * Search pattern: unnest <- assign [function-call: collection] <- assign 
[constant: string]
+ *
+ * <pre>
+ * Search pattern:
+ *   unnest &lt;- assign [function-call: collection] &lt;- assign [constant: 
string]
+ * </pre>
  */
 public class SetCollectionDataSourceRule extends AbstractCollectionRule {
     @Override
-    public boolean rewritePre(Mutable<ILogicalOperator> opRef, 
IOptimizationContext context) throws AlgebricksException {
+    public boolean rewritePre(Mutable<ILogicalOperator> opRef, 
IOptimizationContext context)
+            throws AlgebricksException {
         if (context.checkIfInDontApplySet(this, opRef.getValue())) {
             return false;
         }

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/algebricksalternatives/ExtractFunctionsFromJoinConditionRule.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/algebricksalternatives/ExtractFunctionsFromJoinConditionRule.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/algebricksalternatives/ExtractFunctionsFromJoinConditionRule.java
index 9ae19f5..80ff036 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/algebricksalternatives/ExtractFunctionsFromJoinConditionRule.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/algebricksalternatives/ExtractFunctionsFromJoinConditionRule.java
@@ -43,13 +43,18 @@ import 
org.apache.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
  * Factors out function expressions from each comparison function or 
similarity function in join condition by assigning them to a variables, and 
replacing the function expressions with references to those variables.
  * Examples:
  * Plan with function expressions in comparison or similarity condition of 
join expression. Generates one assign operator per extracted function 
expression.
- * Example
+ *
+ * <pre>
  * Before plan:
- * join ( eq( funcX($$1), funcX($$2) ) )
+ *
+ *   join ( eq( funcX($$1), funcX($$2) ) )
+ *
  * After plan:
- * join (eq($$3,$$4))
- * assign [$$4] <- [funcY($$2)]
- * assign [$$3] <- [funcX($$1)]
+ *
+ *   join (eq($$3,$$4))
+ *   assign [$$4] &lt;- [funcY($$2)]
+ *   assign [$$3] &lt;- [funcX($$1)]
+ * </pre>
  */
 public class ExtractFunctionsFromJoinConditionRule implements 
IAlgebraicRewriteRule {
 

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/util/CardinalityRuleToolbox.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/util/CardinalityRuleToolbox.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/util/CardinalityRuleToolbox.java
index 7744eb2..fe18204 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/util/CardinalityRuleToolbox.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/util/CardinalityRuleToolbox.java
@@ -27,10 +27,12 @@ import 
org.apache.hyracks.algebricks.core.algebra.operators.logical.NestedTupleS
 public class CardinalityRuleToolbox {
     /**
      * Get the Cardinality variable of the parent operator.
-     * 
+     *
      * @param op
+     *            Logical operator
      * @param vxqueryContext
-     * @return
+     *            VXQuery context
+     * @return Cardinality of the producer.
      */
     public static Cardinality getProducerCardinality(ILogicalOperator op, 
VXQueryOptimizationContext vxqueryContext) {
         AbstractLogicalOperator producerOp = (AbstractLogicalOperator) 
op.getInputs().get(0).getValue();
@@ -55,8 +57,8 @@ public class CardinalityRuleToolbox {
             case SUBPLAN:
                 // Find the last operator to set a variable and call this 
function again.
                 AbstractOperatorWithNestedPlans operatorWithNestedPlan = 
(AbstractOperatorWithNestedPlans) op;
-                AbstractLogicalOperator lastOperator = 
(AbstractLogicalOperator) operatorWithNestedPlan
-                        .getNestedPlans().get(0).getRoots().get(0).getValue();
+                AbstractLogicalOperator lastOperator = 
(AbstractLogicalOperator) operatorWithNestedPlan.getNestedPlans()
+                        .get(0).getRoots().get(0).getValue();
                 cardinalityVariable = 
vxqueryContext.getCardinalityOperatorMap(lastOperator);
                 break;
             case DATASOURCESCAN:
@@ -82,8 +84,8 @@ public class CardinalityRuleToolbox {
 
             // The following operators' analysis has not yet been implemented.
             default:
-                throw new RuntimeException("Operator (" + op.getOperatorTag()
-                        + ") has not been implemented in rewrite rule.");
+                throw new RuntimeException(
+                        "Operator (" + op.getOperatorTag() + ") has not been 
implemented in rewrite rule.");
         }
         return cardinalityVariable;
     }

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/util/ExpressionToolbox.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/util/ExpressionToolbox.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/util/ExpressionToolbox.java
index 10a8dca..0dd3b31 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/util/ExpressionToolbox.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/compiler/rewriter/rules/util/ExpressionToolbox.java
@@ -131,6 +131,11 @@ public class ExpressionToolbox {
 
     /**
      * Finds all functions for a given expression.
+     *
+     * @param mutableLe
+     *            Search logical expression
+     * @param finds
+     *            Logical expressions found
      */
     public static void findAllFunctionExpressions(Mutable<ILogicalExpression> 
mutableLe,
             List<Mutable<ILogicalExpression>> finds) {
@@ -146,6 +151,13 @@ public class ExpressionToolbox {
 
     /**
      * Finds all functions for a given expression and function identifier.
+     *
+     * @param mutableLe
+     *            Search logical expression
+     * @param fi
+     *            Function indentifier
+     * @param finds
+     *            Logical expressions found
      */
     public static void findAllFunctionExpressions(Mutable<ILogicalExpression> 
mutableLe, FunctionIdentifier fi,
             List<Mutable<ILogicalExpression>> finds) {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/datamodel/util/DateTime.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/datamodel/util/DateTime.java 
b/vxquery-core/src/main/java/org/apache/vxquery/datamodel/util/DateTime.java
index 1850dd1..16c350f 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/datamodel/util/DateTime.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/datamodel/util/DateTime.java
@@ -63,9 +63,10 @@ public class DateTime {
 
     /**
      * Check whether a given year is a leap year.
-     * 
+     *
      * @param year
-     * @return
+     *            A long for year.
+     * @return Boolean for leap year.
      */
     public static boolean isLeapYear(long year) {
         return ((year & 3) == 0) && ((year % 100) != 0 || (year % 400) == 0);
@@ -73,9 +74,24 @@ public class DateTime {
 
     /**
      * Check whether a given year is a leap year.
-     * 
+     *
      * @param year
-     * @return
+     *            year
+     * @param month
+     *            month
+     * @param day
+     *            day
+     * @param hour
+     *            hour
+     * @param minute
+     *            minute
+     * @param millisecond
+     *            millisecond
+     * @param timezoneHour
+     *            timezoneHour
+     * @param timezoneMinute
+     *            timezoneMinute
+     * @return Boolean for valid date.
      */
     public static boolean valid(long year, long month, long day, long hour, 
long minute, long millisecond,
             long timezoneHour, long timezoneMinute) {
@@ -115,6 +131,19 @@ public class DateTime {
 
     /**
      * Return a normalized time.
+     *
+     * @param yearMonth
+     *            Months
+     * @param dayTime
+     *            Time
+     * @param timezoneHour
+     *            timezoneHour
+     * @param timezoneMinute
+     *            timezoneMinute
+     * @param dOut
+     *            Data out
+     * @throws IOException
+     *             Could not write result.
      */
     public static void normalizeDateTime(long yearMonth, long dayTime, long 
timezoneHour, long timezoneMinute,
             DataOutput dOut) throws IOException {
@@ -221,7 +250,8 @@ public class DateTime {
         DateTime.normalizeDateTime(timezonep.getYearMonth(), dayTime, 0, 0, 
dOut);
     }
 
-    public static void adjustDateTimeToTimezone(ITimezone timezonep, long 
timezone, DataOutput dOut) throws IOException {
+    public static void adjustDateTimeToTimezone(ITimezone timezonep, long 
timezone, DataOutput dOut)
+            throws IOException {
         long timezoneHour = timezone / 60;
         long timezoneMinute = timezone % 60;
         long dayTime = timezonep.getDayTime();
@@ -229,8 +259,8 @@ public class DateTime {
                 || timezonep.getTimezoneMinute() == 
DateTime.TIMEZONE_MINUTE_NULL) {
             // No change.
         } else {
-            dayTime -= (timezonep.getTimezoneHour() * DateTime.CHRONON_OF_HOUR 
+ timezonep.getTimezoneMinute()
-                    * DateTime.CHRONON_OF_MINUTE);
+            dayTime -= (timezonep.getTimezoneHour() * DateTime.CHRONON_OF_HOUR
+                    + timezonep.getTimezoneMinute() * 
DateTime.CHRONON_OF_MINUTE);
             dayTime += (timezoneHour * DateTime.CHRONON_OF_HOUR + 
timezoneMinute * DateTime.CHRONON_OF_MINUTE);
         }
         DateTime.normalizeDateTime(timezonep.getYearMonth(), dayTime, 
timezoneHour, timezoneMinute, dOut);

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/functions/Signature.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/functions/Signature.java 
b/vxquery-core/src/main/java/org/apache/vxquery/functions/Signature.java
index 8604212..d8d0a85 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/functions/Signature.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/functions/Signature.java
@@ -27,10 +27,12 @@ public final class Signature {
     private SequenceType[] parameterTypes;
     private SequenceType rType;
 
+    @SuppressWarnings("unchecked")
     public Signature(SequenceType rType, Pair<QName, SequenceType>... 
parameters) {
         this(rType, false, parameters);
     }
 
+    @SuppressWarnings("unchecked")
     public Signature(SequenceType rType, boolean varArgs, Pair<QName, 
SequenceType>... parameters) {
         int len = parameters.length;
         this.varArgs = varArgs;

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/cast/AbstractCastToOperation.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/cast/AbstractCastToOperation.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/cast/AbstractCastToOperation.java
index f58a39a..f686361 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/cast/AbstractCastToOperation.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/cast/AbstractCastToOperation.java
@@ -40,9 +40,9 @@ import 
org.apache.hyracks.data.std.primitive.UTF8StringPointable;
 
 public abstract class AbstractCastToOperation {
 
-    /**
-     * Primitive Datatypes
-     */
+    //
+    // Primitive Datatypes
+    //
     public void convertAnyURI(UTF8StringPointable stringp, DataOutput dOut) 
throws SystemException, IOException {
         throw new SystemException(ErrorCode.XPTY0004);
     }
@@ -135,9 +135,9 @@ public abstract class AbstractCastToOperation {
         throw new SystemException(ErrorCode.XPTY0004);
     }
 
-    /**
-     * Derived Numeric Datatypes
-     */
+    //
+    // Derived Numeric Datatypes
+    //
     public void convertByte(BytePointable bytep, DataOutput dOut) throws 
SystemException, IOException {
         throw new SystemException(ErrorCode.XPTY0004);
     }
@@ -186,9 +186,9 @@ public abstract class AbstractCastToOperation {
         throw new SystemException(ErrorCode.XPTY0004);
     }
 
-    /**
-     * Derived String Datatypes
-     */
+    //
+    // Derived String Datatypes
+    //
 
     public void convertEntity(UTF8StringPointable stringp, DataOutput dOut) 
throws SystemException, IOException {
         throw new SystemException(ErrorCode.XPTY0004);
@@ -218,8 +218,8 @@ public abstract class AbstractCastToOperation {
         throw new SystemException(ErrorCode.XPTY0004);
     }
 
-    public void convertNormalizedString(UTF8StringPointable stringp, 
DataOutput dOut) throws SystemException,
-            IOException {
+    public void convertNormalizedString(UTF8StringPointable stringp, 
DataOutput dOut)
+            throws SystemException, IOException {
         throw new SystemException(ErrorCode.XPTY0004);
     }
 

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/cast/CastToBase64BinaryOperation.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/cast/CastToBase64BinaryOperation.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/cast/CastToBase64BinaryOperation.java
index e2d33a5..680ce08 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/cast/CastToBase64BinaryOperation.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/cast/CastToBase64BinaryOperation.java
@@ -47,6 +47,7 @@ public class CastToBase64BinaryOperation extends 
AbstractCastToOperation {
         baaos.reset();
         Base64OutputStream b64os = new Base64OutputStream(baaos, false);
         b64os.write(stringp.getByteArray(), stringp.getStartOffset() + 2, 
stringp.getLength() - 2);
+        b64os.close();
 
         dOut.write(ValueTag.XS_BASE64_BINARY_TAG);
         dOut.write((byte) ((baaos.size() >>> 8) & 0xFF));

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/castable/AbstractCastableAsOperation.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/castable/AbstractCastableAsOperation.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/castable/AbstractCastableAsOperation.java
index 2c042e7..8076191 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/castable/AbstractCastableAsOperation.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/castable/AbstractCastableAsOperation.java
@@ -154,9 +154,9 @@ public abstract class AbstractCastableAsOperation {
         dOut.write((byte) 0);
     }
 
-    /**
-     * Derived Datatypes
-     */
+    //
+    // Derived Datatypes
+    //
     public void convertByte(BytePointable bytep, DataOutput dOut) throws 
SystemException, IOException {
         dOut.write(ValueTag.XS_BOOLEAN_TAG);
         dOut.write((byte) 0);

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/error/FnErrorScalarEvaluatorFactory.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/error/FnErrorScalarEvaluatorFactory.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/error/FnErrorScalarEvaluatorFactory.java
index e879378..0588820 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/error/FnErrorScalarEvaluatorFactory.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/error/FnErrorScalarEvaluatorFactory.java
@@ -18,6 +18,13 @@ package org.apache.vxquery.runtime.functions.error;
 
 import java.io.DataInputStream;
 
+import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
+import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator;
+import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
+import org.apache.hyracks.api.context.IHyracksTaskContext;
+import org.apache.hyracks.data.std.api.IPointable;
+import org.apache.hyracks.data.std.primitive.UTF8StringPointable;
+import org.apache.hyracks.dataflow.common.comm.util.ByteBufferInputStream;
 import org.apache.vxquery.datamodel.accessors.SequencePointable;
 import org.apache.vxquery.datamodel.accessors.TaggedValuePointable;
 import org.apache.vxquery.datamodel.accessors.atomic.XSQNamePointable;
@@ -28,14 +35,6 @@ import 
org.apache.vxquery.runtime.functions.base.AbstractTaggedValueArgumentScal
 import 
org.apache.vxquery.runtime.functions.base.AbstractTaggedValueArgumentScalarEvaluatorFactory;
 import org.apache.vxquery.runtime.functions.util.FunctionHelper;
 
-import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
-import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator;
-import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
-import org.apache.hyracks.api.context.IHyracksTaskContext;
-import org.apache.hyracks.data.std.api.IPointable;
-import org.apache.hyracks.data.std.primitive.UTF8StringPointable;
-import org.apache.hyracks.dataflow.common.comm.util.ByteBufferInputStream;
-
 public class FnErrorScalarEvaluatorFactory extends 
AbstractTaggedValueArgumentScalarEvaluatorFactory {
     private static final long serialVersionUID = 1L;
 
@@ -43,6 +42,7 @@ public class FnErrorScalarEvaluatorFactory extends 
AbstractTaggedValueArgumentSc
         super(args);
     }
 
+    @SuppressWarnings("unused")
     @Override
     protected IScalarEvaluator createEvaluator(IHyracksTaskContext ctx, 
IScalarEvaluator[] args)
             throws AlgebricksException {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/sequence/FnSubsequenceScalarEvaluatorFactory.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/sequence/FnSubsequenceScalarEvaluatorFactory.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/sequence/FnSubsequenceScalarEvaluatorFactory.java
index 690c4a4..6c21169 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/sequence/FnSubsequenceScalarEvaluatorFactory.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/sequence/FnSubsequenceScalarEvaluatorFactory.java
@@ -110,9 +110,9 @@ public class FnSubsequenceScalarEvaluatorFactory extends 
AbstractTaggedValueArgu
 
             /**
              * XQuery Specification calls for double value. Integer and 
Decimal are allowed to cut down on casting.
-             * 
+             *
              * @param tvp
-             * @return
+             * @return long
              * @throws SystemException
              * @throws IOException
              */

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/AbstractDescendantPathStepScalarEvaluator.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/AbstractDescendantPathStepScalarEvaluator.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/AbstractDescendantPathStepScalarEvaluator.java
index f3442a5..adee6f2 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/AbstractDescendantPathStepScalarEvaluator.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/AbstractDescendantPathStepScalarEvaluator.java
@@ -46,9 +46,11 @@ public abstract class 
AbstractDescendantPathStepScalarEvaluator extends Abstract
 
     /**
      * Search through all tree children and children's children.
-     * 
+     *
      * @param nodePointable
+     *            Node pointable
      * @throws SystemException
+     *             Could not save result.
      */
     protected void searchSubtree(TaggedValuePointable nodePointable) throws 
SystemException {
         try {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/ChildPathStepOperatorDescriptor.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/ChildPathStepOperatorDescriptor.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/ChildPathStepOperatorDescriptor.java
index eed6bc5..a90963b 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/ChildPathStepOperatorDescriptor.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/ChildPathStepOperatorDescriptor.java
@@ -66,6 +66,12 @@ public class ChildPathStepOperatorDescriptor extends 
AbstractForwardAxisPathStep
     /**
      * Single node tree input.
      * Requirement: "ntp" must be the node tree.
+     *
+     * @param result
+     *            Node tree pointable
+     * @return found result
+     * @throws AlgebricksException
+     *             Could not save result.
      */
     public boolean step(IPointable result) throws AlgebricksException {
         ntp.getRootNode(tvpStep);
@@ -77,6 +83,16 @@ public class ChildPathStepOperatorDescriptor extends 
AbstractForwardAxisPathStep
 
     /**
      * Find the next node to return.
+     *
+     * @param tvpInput
+     *            pointable
+     * @param level
+     *            level
+     * @param result
+     *            result
+     * @return found result
+     * @throws AlgebricksException
+     *             Could not save result.
      */
     protected boolean stepNodeTree(TaggedValuePointable tvpInput, int level, 
IPointable result)
             throws AlgebricksException {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/ChildPathStepUnnesting.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/ChildPathStepUnnesting.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/ChildPathStepUnnesting.java
index 682fd7e..74ec91b 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/ChildPathStepUnnesting.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/ChildPathStepUnnesting.java
@@ -62,7 +62,7 @@ public class ChildPathStepUnnesting extends 
AbstractForwardAxisPathStep {
             SequenceType sType = 
dCtx.getStaticContext().lookupSequenceType(ip.getInteger());
             filter = NodeTestFilter.getNodeTestFilter(sType);
         }
-        
+
         if (args[0].getTag() == ValueTag.SEQUENCE_TAG) {
             args[0].getValue(seqNtp);
             seqArgsLength = seqNtp.getEntryCount();
@@ -101,6 +101,16 @@ public class ChildPathStepUnnesting extends 
AbstractForwardAxisPathStep {
 
     /**
      * Find the next node to return.
+     *
+     * @param tvpInput
+     *            pointable
+     * @param level
+     *            level
+     * @param result
+     *            result
+     * @return found result
+     * @throws AlgebricksException
+     *             Could not save result.
      */
     protected boolean stepNodeTree(TaggedValuePointable tvpInput, int level, 
IPointable result)
             throws AlgebricksException {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/DescendantOrSelfPathStepUnnesting.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/DescendantOrSelfPathStepUnnesting.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/DescendantOrSelfPathStepUnnesting.java
index 2cc6818..37cd400 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/DescendantOrSelfPathStepUnnesting.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/step/DescendantOrSelfPathStepUnnesting.java
@@ -133,9 +133,16 @@ public class DescendantOrSelfPathStepUnnesting extends 
AbstractForwardAxisPathSt
 
     /**
      * Search through all tree children and children's children.
-     * 
-     * @param nodePointable
-     * @throws SystemException
+     *
+     * @param tvpInput
+     *            pointable
+     * @param level
+     *            level
+     * @param result
+     *            result
+     * @return found result
+     * @throws AlgebricksException
+     *             Could not save result.
      */
     protected boolean stepNodeTree(TaggedValuePointable tvpInput, int level, 
IPointable result)
             throws AlgebricksException {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/util/FunctionHelper.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/util/FunctionHelper.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/util/FunctionHelper.java
index 920c815..a57bf72 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/util/FunctionHelper.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/util/FunctionHelper.java
@@ -458,7 +458,7 @@ public class FunctionHelper {
 
     public static boolean compareTaggedValues(AbstractValueComparisonOperation 
aOp, TaggedValuePointable tvp1,
             TaggedValuePointable tvp2, DynamicContext dCtx, TypedPointables 
tp1, TypedPointables tp2)
-            throws SystemException {
+                    throws SystemException {
         int tid1 = getBaseTypeForComparisons(tvp1.getTag());
         int tid2 = getBaseTypeForComparisons(tvp2.getTag());
 
@@ -1028,6 +1028,12 @@ public class FunctionHelper {
 
     /**
      * Get the local node id from a tagged value pointable when available.
+     *
+     * @param tvp1
+     *            pointable
+     * @param tp
+     *            Typed pointable
+     * @return local node id
      */
     public static int getLocalNodeId(TaggedValuePointable tvp1, 
TypedPointables tp) {
         final TaggedValuePointable tvp = (TaggedValuePointable) 
TaggedValuePointable.FACTORY.createPointable();
@@ -1067,6 +1073,10 @@ public class FunctionHelper {
 
     /**
      * Returns the number of digits in a long. A few special cases that needed 
attention.
+     *
+     * @param value
+     *            value
+     * @return Number of digits
      */
     public static int getNumberOfDigits(long value) {
         if (value == 0) {
@@ -1095,9 +1105,8 @@ public class FunctionHelper {
     public static String getStringFromPointable(UTF8StringPointable stringp, 
ByteBufferInputStream bbis,
             DataInputStream di) throws SystemException {
         try {
-            bbis.setByteBuffer(
-                    ByteBuffer.wrap(Arrays.copyOfRange(stringp.getByteArray(), 
stringp.getStartOffset(),
-                            stringp.getLength() + stringp.getStartOffset())), 
0);
+            
bbis.setByteBuffer(ByteBuffer.wrap(Arrays.copyOfRange(stringp.getByteArray(), 
stringp.getStartOffset(),
+                    stringp.getLength() + stringp.getStartOffset())), 0);
             return di.readUTF();
         } catch (IOException e) {
             throw new SystemException(ErrorCode.SYSE0001, e);
@@ -1105,8 +1114,8 @@ public class FunctionHelper {
     }
 
     public static long getTimezone(ITimezone timezonep) {
-        return timezonep.getTimezoneHour() * DateTime.CHRONON_OF_HOUR + 
timezonep.getTimezoneMinute()
-                * DateTime.CHRONON_OF_MINUTE;
+        return timezonep.getTimezoneHour() * DateTime.CHRONON_OF_HOUR
+                + timezonep.getTimezoneMinute() * DateTime.CHRONON_OF_MINUTE;
     }
 
     public static boolean isDerivedFromDouble(int tid) {
@@ -1159,9 +1168,10 @@ public class FunctionHelper {
 
     /**
      * Returns 0 if positive, nonzero if negative.
-     * 
+     *
      * @param value
-     * @return
+     *            value
+     * @return boolean
      */
     public static boolean isNumberPostive(long value) {
         return ((value & 0x8000000000000000L) == 0 ? true : false);
@@ -1281,12 +1291,15 @@ public class FunctionHelper {
 
     /**
      * Writes a number to the DataOutput with zeros as place holders if the 
number is too small to fill the padding.
-     * 
+     *
      * @param value
+     *            value
      * @param padding
+     *            padding
      * @param dOut
-     * @throws IOException
+     *            data output
      */
+
     public static void writeNumberWithPadding(long value, int padding, 
DataOutput dOut) {
         if (value < 0) {
             writeChar('-', dOut);

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/AbstractNodeType.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/types/AbstractNodeType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/AbstractNodeType.java
index 8177a06..c7180ae 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/AbstractNodeType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/AbstractNodeType.java
@@ -17,6 +17,8 @@
 package org.apache.vxquery.types;
 
 abstract class AbstractNodeType implements NodeType {
+    private static final long serialVersionUID = 1L;
+
     @Override
     public final boolean isAtomicType() {
         return false;

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/AnyItemType.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/types/AnyItemType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/AnyItemType.java
index c6db3ad..a2cb3ab 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/AnyItemType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/AnyItemType.java
@@ -17,6 +17,7 @@
 package org.apache.vxquery.types;
 
 public final class AnyItemType implements ItemType {
+    private static final long serialVersionUID = 1L;
     public static final AnyItemType INSTANCE = new AnyItemType();
 
     private AnyItemType() {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/AnyNodeType.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/types/AnyNodeType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/AnyNodeType.java
index 74e6630..1e85eb6 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/AnyNodeType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/AnyNodeType.java
@@ -17,6 +17,7 @@
 package org.apache.vxquery.types;
 
 public final class AnyNodeType extends AbstractNodeType {
+    private static final long serialVersionUID = 1L;
     public static final AnyNodeType INSTANCE = new AnyNodeType();
 
     private AnyNodeType() {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/AnySimpleType.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/types/AnySimpleType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/AnySimpleType.java
index ae4ce25..ee6193f 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/AnySimpleType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/AnySimpleType.java
@@ -17,6 +17,7 @@
 package org.apache.vxquery.types;
 
 public final class AnySimpleType implements SimpleType {
+    private static final long serialVersionUID = 1L;
     public static final SimpleType INSTANCE = new AnySimpleType();
 
     private AnySimpleType() {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/AnyType.java
----------------------------------------------------------------------
diff --git a/vxquery-core/src/main/java/org/apache/vxquery/types/AnyType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/AnyType.java
index 92f21ed..2cb9672 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/AnyType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/AnyType.java
@@ -17,6 +17,7 @@
 package org.apache.vxquery.types;
 
 public final class AnyType implements ComplexType {
+    private static final long serialVersionUID = 1L;
     public static final SchemaType INSTANCE = new AnyType();
 
     private AnyType() {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/AttributeType.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/types/AttributeType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/AttributeType.java
index b99b349..72b9497 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/AttributeType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/AttributeType.java
@@ -17,6 +17,8 @@
 package org.apache.vxquery.types;
 
 public final class AttributeType extends AbstractNodeType {
+    private static final long serialVersionUID = 1L;
+
     public static final AttributeType ANYATTRIBUTE = new 
AttributeType(NameTest.STAR_NAMETEST,
             BuiltinTypeRegistry.XS_ANY_ATOMIC);
 

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/CommentType.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/types/CommentType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/CommentType.java
index 5766a75..d84d848 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/CommentType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/CommentType.java
@@ -17,6 +17,7 @@
 package org.apache.vxquery.types;
 
 public final class CommentType extends AbstractNodeType {
+    private static final long serialVersionUID = 1L;
     public static final CommentType INSTANCE = new CommentType();
 
     private CommentType() {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/DocumentType.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/types/DocumentType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/DocumentType.java
index 66124f8..aa62ebd 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/DocumentType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/DocumentType.java
@@ -17,6 +17,8 @@
 package org.apache.vxquery.types;
 
 public final class DocumentType extends AbstractNodeType {
+    private static final long serialVersionUID = 1L;
+
     public static final DocumentType ANYDOCUMENT = new 
DocumentType(ElementType.ANYELEMENT);
 
     private ElementType elementType;

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/ElementType.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/types/ElementType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/ElementType.java
index 6f7d431..0fd1594 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/ElementType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/ElementType.java
@@ -17,6 +17,8 @@
 package org.apache.vxquery.types;
 
 public final class ElementType extends AbstractNodeType {
+    private static final long serialVersionUID = 1L;
+
     public static final ElementType ANYELEMENT = new 
ElementType(NameTest.STAR_NAMETEST, AnyType.INSTANCE, true);
 
     private NameTest nameTest;

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/EmptySequenceType.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/types/EmptySequenceType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/EmptySequenceType.java
index 61d1c4b..4afeb40 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/EmptySequenceType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/EmptySequenceType.java
@@ -17,6 +17,7 @@
 package org.apache.vxquery.types;
 
 public final class EmptySequenceType implements ItemType {
+    private static final long serialVersionUID = 1L;
     public static final EmptySequenceType INSTANCE = new EmptySequenceType();
 
     private EmptySequenceType() {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/NoneType.java
----------------------------------------------------------------------
diff --git a/vxquery-core/src/main/java/org/apache/vxquery/types/NoneType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/NoneType.java
index 7c58f52..70c0a0a 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/NoneType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/NoneType.java
@@ -17,6 +17,7 @@
 package org.apache.vxquery.types;
 
 public final class NoneType implements ItemType {
+    private static final long serialVersionUID = 1L;
     public static final NoneType INSTANCE = new NoneType();
 
     private NoneType() {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/ProcessingInstructionType.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/types/ProcessingInstructionType.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/types/ProcessingInstructionType.java
index 46f847e..c445ba7 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/types/ProcessingInstructionType.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/types/ProcessingInstructionType.java
@@ -21,6 +21,8 @@ import java.util.Arrays;
 import org.apache.hyracks.data.std.primitive.UTF8StringPointable;
 
 public final class ProcessingInstructionType extends AbstractNodeType {
+    private static final long serialVersionUID = 1L;
+
     public static final ProcessingInstructionType ANYPI = new 
ProcessingInstructionType(null);
 
     private byte[] target;

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/types/TextType.java
----------------------------------------------------------------------
diff --git a/vxquery-core/src/main/java/org/apache/vxquery/types/TextType.java 
b/vxquery-core/src/main/java/org/apache/vxquery/types/TextType.java
index 2656775..7c7fec7 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/types/TextType.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/types/TextType.java
@@ -17,6 +17,7 @@
 package org.apache.vxquery.types;
 
 public final class TextType extends AbstractNodeType {
+    private static final long serialVersionUID = 1L;
     public static final TextType INSTANCE = new TextType();
 
     private TextType() {

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-core/src/main/java/org/apache/vxquery/xmlquery/query/XMLQueryCompiler.java
----------------------------------------------------------------------
diff --git 
a/vxquery-core/src/main/java/org/apache/vxquery/xmlquery/query/XMLQueryCompiler.java
 
b/vxquery-core/src/main/java/org/apache/vxquery/xmlquery/query/XMLQueryCompiler.java
index e9efa11..e42caba 100644
--- 
a/vxquery-core/src/main/java/org/apache/vxquery/xmlquery/query/XMLQueryCompiler.java
+++ 
b/vxquery-core/src/main/java/org/apache/vxquery/xmlquery/query/XMLQueryCompiler.java
@@ -126,7 +126,7 @@ public class XMLQueryCompiler {
         builder.setLogicalRewrites(buildDefaultLogicalRewrites());
         builder.setPhysicalRewrites(buildDefaultPhysicalRewrites());
         builder.setSerializerDeserializerProvider(new 
ISerializerDeserializerProvider() {
-            @SuppressWarnings("unchecked")
+            @SuppressWarnings("rawtypes")
             @Override
             public ISerializerDeserializer getSerializerDeserializer(Object 
type) throws AlgebricksException {
                 return null;

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/TestRunner.java
----------------------------------------------------------------------
diff --git 
a/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/TestRunner.java 
b/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/TestRunner.java
index d8543f5..18db5c1 100644
--- a/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/TestRunner.java
+++ b/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/TestRunner.java
@@ -18,27 +18,13 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.io.InputStreamReader;
 import java.io.Reader;
-import java.nio.ByteBuffer;
 import java.util.EnumSet;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import org.apache.commons.io.IOUtils;
-import org.apache.vxquery.compiler.CompilerControlBlock;
-import org.apache.vxquery.compiler.algebricks.VXQueryGlobalDataFactory;
-import org.apache.vxquery.context.DynamicContext;
-import org.apache.vxquery.context.DynamicContextImpl;
-import org.apache.vxquery.context.RootStaticContextImpl;
-import org.apache.vxquery.context.StaticContextImpl;
-import org.apache.vxquery.exceptions.ErrorCode;
-import org.apache.vxquery.exceptions.SystemException;
-import org.apache.vxquery.result.ResultUtils;
-import org.apache.vxquery.xmlquery.query.VXQueryCompilationListener;
-import org.apache.vxquery.xmlquery.query.XMLQueryCompiler;
-
 import org.apache.hyracks.api.client.HyracksConnection;
 import org.apache.hyracks.api.client.IHyracksClientConnection;
-import org.apache.hyracks.api.comm.FixedSizeFrame;
 import org.apache.hyracks.api.comm.IFrame;
 import org.apache.hyracks.api.comm.IFrameTupleAccessor;
 import org.apache.hyracks.api.comm.VSizeFrame;
@@ -56,6 +42,17 @@ import 
org.apache.hyracks.control.common.controllers.NCConfig;
 import org.apache.hyracks.control.nc.NodeControllerService;
 import org.apache.hyracks.control.nc.resources.memory.FrameManager;
 import org.apache.hyracks.dataflow.common.comm.io.ResultFrameTupleAccessor;
+import org.apache.vxquery.compiler.CompilerControlBlock;
+import org.apache.vxquery.compiler.algebricks.VXQueryGlobalDataFactory;
+import org.apache.vxquery.context.DynamicContext;
+import org.apache.vxquery.context.DynamicContextImpl;
+import org.apache.vxquery.context.RootStaticContextImpl;
+import org.apache.vxquery.context.StaticContextImpl;
+import org.apache.vxquery.exceptions.ErrorCode;
+import org.apache.vxquery.exceptions.SystemException;
+import org.apache.vxquery.result.ResultUtils;
+import org.apache.vxquery.xmlquery.query.VXQueryCompilationListener;
+import org.apache.vxquery.xmlquery.query.XMLQueryCompiler;
 
 public class TestRunner {
     private static final Pattern EMBEDDED_SYSERROR_PATTERN = Pattern

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/DiskPerformance.java
----------------------------------------------------------------------
diff --git 
a/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/DiskPerformance.java
 
b/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/DiskPerformance.java
deleted file mode 100644
index 63fce8b..0000000
--- 
a/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/DiskPerformance.java
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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 at
- * 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 org.apache.vxquery.xtest.util;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.Date;
-import java.util.Iterator;
-import java.util.List;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.TimeUnit;
-
-import org.apache.commons.io.FileUtils;
-import org.apache.commons.io.filefilter.TrueFileFilter;
-import org.apache.vxquery.datamodel.builders.atomic.StringValueBuilder;
-import org.apache.vxquery.metadata.VXQueryIOFileFilter;
-import org.apache.vxquery.types.AnyType;
-import org.apache.vxquery.types.ElementType;
-import org.apache.vxquery.types.NameTest;
-import org.apache.vxquery.types.Quantifier;
-import org.apache.vxquery.types.SequenceType;
-import org.apache.vxquery.xmlparser.SAXContentHandler;
-import org.apache.vxquery.xmlparser.TreeNodeIdProvider;
-import org.apache.vxquery.xtest.util.tests.BufferedParsedCharacterStream;
-import org.apache.vxquery.xtest.util.tests.BufferedReaderBufferedStream;
-import org.apache.vxquery.xtest.util.tests.BufferedReaderStream;
-import org.apache.vxquery.xtest.util.tests.BufferedStream;
-import org.apache.vxquery.xtest.util.tests.IDiskTest;
-import org.apache.vxquery.xtest.util.tests.ParsedBufferedByteStream;
-import org.apache.vxquery.xtest.util.tests.ParsedBufferedCharacterStream;
-import org.apache.vxquery.xtest.util.tests.ParsedByteStream;
-import org.apache.vxquery.xtest.util.tests.ParsedCharacterStream;
-import org.apache.vxquery.xtest.util.tests.ReaderBufferedStream;
-import org.apache.vxquery.xtest.util.tests.ReaderStream;
-import org.apache.vxquery.xtest.util.tests.Stream;
-import org.xml.sax.XMLReader;
-import org.xml.sax.helpers.XMLReaderFactory;
-
-import org.apache.hyracks.algebricks.common.utils.Pair;
-import org.apache.hyracks.data.std.util.ArrayBackedValueStorage;
-
-public class DiskPerformance {
-    XMLReader parser;
-    SAXContentHandler handler;
-    Collection<File> cTestFiles;
-    Iterator<File> testFilesIt;
-
-    public DiskPerformance() {
-        Pair<XMLReader, SAXContentHandler> p = getNewParser();
-        parser = p.first;
-        handler = p.second;
-        cTestFiles = null;
-    }
-
-    public Pair<XMLReader, SAXContentHandler> getNewParser() {
-        XMLReader parser;
-        SAXContentHandler handler;
-
-        try {
-            parser = XMLReaderFactory.createXMLReader();
-            List<SequenceType> childSeq = new ArrayList<SequenceType>();
-            NameTest nt = new NameTest(createUTF8String(""), 
createUTF8String("data"));
-            childSeq.add(SequenceType.create(new ElementType(nt, 
AnyType.INSTANCE, false), Quantifier.QUANT_ONE));
-            handler = new SAXContentHandler(false, new 
TreeNodeIdProvider((short) 0), null, childSeq);
-            parser.setContentHandler(handler);
-            
parser.setProperty("http://xml.org/sax/properties/lexical-handler";, handler);
-            return new Pair<XMLReader, SAXContentHandler>(parser, handler);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-        return null;
-    }
-
-    public void setDirectory(String filename) {
-        File directory = new File(filename);
-        if (directory.isDirectory()) {
-            cTestFiles = FileUtils.listFiles(directory, new 
VXQueryIOFileFilter(), TrueFileFilter.INSTANCE);
-            if (cTestFiles.size() < 1) {
-                System.err.println("No XML files found in given directory.");
-                return;
-            }
-        }
-        testFilesIt = cTestFiles.iterator();
-    }
-
-    public File getNextFile() {
-        if (!testFilesIt.hasNext()) {
-            testFilesIt = cTestFiles.iterator();
-        }
-        return testFilesIt.next();
-    }
-
-    private byte[] createUTF8String(String str) {
-        ArrayBackedValueStorage abvs = new ArrayBackedValueStorage();
-        StringValueBuilder svb = new StringValueBuilder();
-        try {
-            svb.write(str, abvs.getDataOutput());
-        } catch (IOException e) {
-            throw new IllegalStateException(e);
-        }
-        return Arrays.copyOf(abvs.getByteArray(), abvs.getLength());
-    }
-
-    public static void main(String... args) throws IOException {
-        // First Argument (XML folder)
-        if (args.length < 1) {
-            System.err.println("Please provide a directory for the test XML 
documents.");
-            return;
-        }
-        // Second argument (threads)
-        int threads = 1;
-        if (args.length > 1) {
-            threads = Integer.parseInt(args[1]);
-        }
-
-        // Third argument (repeat)
-        int repeat = 1;
-        if (args.length > 2) {
-            repeat = Integer.parseInt(args[2]);
-        }
-
-        // Fourth argument (buffer size)
-        int bufferSize = -1;
-        if (args.length > 3) {
-            bufferSize = Integer.parseInt(args[3]);
-        }
-
-        DiskPerformance dp = new DiskPerformance();
-        dp.setDirectory(args[0]);
-
-        ArrayList<Class> tests = new ArrayList<Class>();
-        // Parsed Character Streams
-        tests.add(ParsedBufferedCharacterStream.class);
-        //        tests.add(BufferedParsedCharacterStream.class);
-        //        tests.add(ParsedCharacterStream.class);
-        // Parsed Byte Streams
-        //        tests.add(ParsedBufferedByteStream.class);
-        //        tests.add(ParsedByteStream.class);
-        // Character Streams
-        //        tests.add(BufferedReaderBufferedStream.class);
-        //        tests.add(BufferedReaderStream.class);
-        //        tests.add(ReaderBufferedStream.class);
-        //        tests.add(ReaderStream.class);
-        // Byte Streams
-        //        tests.add(BufferedStream.class);
-        //        tests.add(Stream.class);
-
-        System.out.println("------");
-        System.out.println("Started Test Group: " + new Date());
-        System.out.println("Thread: " + threads);
-        System.out.println("Repeat: " + repeat);
-        System.out.println("Buffer: " + bufferSize);
-        System.out.println("------");
-
-        for (Class<IDiskTest> testClass : tests) {
-            for (int r = 0; r < repeat; ++r) {
-                try {
-                    if (threads > 1) {
-                        runThreadTest(testClass, dp, threads, bufferSize);
-                    } else {
-                        IDiskTest test = testClass.newInstance();
-                        test.setFile(dp.getNextFile());
-                        test.setBufferSize(bufferSize);
-                        test.setParser(dp.parser);
-                        test.run();
-                    }
-                } catch (InstantiationException e) {
-                    e.printStackTrace();
-                } catch (IllegalAccessException e) {
-                    e.printStackTrace();
-                }
-
-            }
-        }
-
-    }
-
-    static <T> void runThreadTest(Class<T> testType, DiskPerformance dp, int 
threads, int bufferSize)
-            throws InstantiationException, IllegalAccessException {
-        ExecutorService es = Executors.newCachedThreadPool();
-        ArrayList<IDiskTest> threadTests = new ArrayList<IDiskTest>();
-        for (int i = 0; i < threads; ++i) {
-            threadTests.add((IDiskTest) testType.newInstance());
-        }
-        for (IDiskTest test : threadTests) {
-            test.setFile(dp.getNextFile());
-            test.setBufferSize(bufferSize);
-            test.setParser(dp.getNewParser().first);
-            es.execute((Runnable) test);
-        }
-        es.shutdown();
-        try {
-            es.awaitTermination(60, TimeUnit.MINUTES);
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-        }
-        //        System.out.println("Completed thread batch: " + new Date());
-    }
-}

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/AbstractDiskTest.java
----------------------------------------------------------------------
diff --git 
a/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/AbstractDiskTest.java
 
b/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/AbstractDiskTest.java
deleted file mode 100644
index f41a02b..0000000
--- 
a/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/AbstractDiskTest.java
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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 at
- * 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 org.apache.vxquery.xtest.util.tests;
-
-import java.io.File;
-import java.io.IOException;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-
-import org.xml.sax.XMLReader;
-
-abstract class AbstractDiskTest implements IDiskTest, Runnable {
-    private String filename;
-    private int bufferSize;
-    protected XMLReader parser;
-
-    public void setFile(File file) {
-        this.filename = file.getAbsolutePath();
-    }
-
-    public String getPrintFilename() {
-        return filename.substring(filename.length() - 20);
-    }
-
-    public void setBufferSize(int bufferSize) {
-        this.bufferSize = bufferSize;
-    }
-
-    public void setParser(XMLReader parser) {
-        this.parser = parser;
-    }
-
-    public void start() {
-        run();
-    }
-
-    public void run() {
-        long size = -1;
-        //        System.out.printf(getPrintFilename() + "\t" + getMessage() + 
" - Starting%n");
-        long start = System.nanoTime();
-        try {
-            size = test(filename, bufferSize);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        long end = System.nanoTime();
-        long timeDelta = end - start;
-        double speed = 0;
-        if (size > 0) {
-            speed = (size * 1e3) / timeDelta;
-        }
-        // System.out.printf("checkSum: %d%n", checkSum);
-        //        System.out.printf(getPrintFilename() + "\t" + getMessage() + 
"%.1f ms\t%.2f MB/s\t%.2f MB/s",
-        //                (timeDelta) / 1e6, 1024 * 1024 * 1e6 / (timeDelta), 
speed);
-        // CSV output of the results.
-        try {
-            System.out.printf("%s,", InetAddress.getLocalHost().getHostName());
-        } catch (UnknownHostException e) {
-            e.printStackTrace();
-        }
-        System.out.printf("%s,%s,%.1f,%.2f", filename, getMessage(), 
(timeDelta) / 1e6,
-                1024 * 1024 * 1e6 / (timeDelta), speed);
-        if (isBuffered() && bufferSize > 0) {
-            System.out.printf(",%.1f", bufferSize / 1024.0);
-        } else {
-            System.out.printf(",0");
-        }
-        System.out.println();
-    }
-
-    public boolean isBuffered() {
-        return true;
-    }
-
-    abstract public String getMessage();
-
-    abstract public long test(String filename, int bufferSize) throws 
IOException;
-}

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/BufferedParsedCharacterStream.java
----------------------------------------------------------------------
diff --git 
a/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/BufferedParsedCharacterStream.java
 
b/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/BufferedParsedCharacterStream.java
deleted file mode 100644
index 8a9ee18..0000000
--- 
a/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/BufferedParsedCharacterStream.java
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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 at
- * 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 org.apache.vxquery.xtest.util.tests;
-
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStreamReader;
-
-import org.xml.sax.InputSource;
-import org.xml.sax.SAXException;
-
-public class BufferedParsedCharacterStream extends AbstractDiskTest {
-    @Override
-    public String getMessage() {
-        return "Buffered Parsed - Character Stream";
-    }
-
-    @Override
-    public long test(String filename, int bufferSize) throws IOException {
-        try {
-            if (bufferSize > 0) {
-                
parser.setProperty("http://apache.org/xml/properties/input-buffer-size";, new 
Integer(bufferSize));
-            }
-            InputStreamReader f = new InputStreamReader(new 
FileInputStream(filename));
-            InputSource in = new InputSource();
-            in.setCharacterStream(f);
-            parser.parse(in);
-        } catch (SAXException e) {
-            e.printStackTrace();
-        }
-        return -1;
-    }
-}

http://git-wip-us.apache.org/repos/asf/vxquery/blob/51a98938/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/BufferedReaderBufferedStream.java
----------------------------------------------------------------------
diff --git 
a/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/BufferedReaderBufferedStream.java
 
b/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/BufferedReaderBufferedStream.java
deleted file mode 100644
index d964241..0000000
--- 
a/vxquery-xtest/src/main/java/org/apache/vxquery/xtest/util/tests/BufferedReaderBufferedStream.java
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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 at
- * 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 org.apache.vxquery.xtest.util.tests;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedReader;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStreamReader;
-
-public class BufferedReaderBufferedStream extends AbstractDiskTest {
-    @Override
-    public String getMessage() {
-        return "Buffered Reader - Buffered Stream";
-    }
-
-    @Override
-    public long test(String filename, int bufferSize) throws IOException {
-        BufferedReader f;
-        if (bufferSize > 0) {
-            f = new BufferedReader(new InputStreamReader(new 
BufferedInputStream(new FileInputStream(filename),
-                    bufferSize)), bufferSize);
-        } else {
-            f = new BufferedReader(new InputStreamReader(new 
BufferedInputStream(new FileInputStream(filename))));
-        }
-        int b;
-        long byteCount = 0L;
-        long checkSum = 0L;
-        while ((b = f.read()) != -1) {
-            checkSum += b;
-            byteCount++;
-        }
-        f.close();
-        return byteCount;
-    }
-}

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