Package org.apache.vxquery.compiler.rewriter.rules

Class SetCollectionDataSourceRule

java.lang.Object

org.apache.vxquery.compiler.rewriter.rules.AbstractCollectionRule

org.apache.vxquery.compiler.rewriter.rules.SetCollectionDataSourceRule

All Implemented Interfaces:

org.apache.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule

public class SetCollectionDataSourceRule
extends AbstractCollectionRule

Find the collection functions and generate the data source objects.

 Search pattern:
   unnest <- assign [function-call: collection] <- assign [constant: string]
 

Constructor Summary

Constructors

Constructor	Description
SetCollectionDataSourceRule()

Method Summary

Modifier and Type	Method	Description
boolean	rewritePre(org.apache.commons.lang3.mutable.Mutable<org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator> opRef, org.apache.hyracks.algebricks.core.algebra.base.IOptimizationContext context)

Methods inherited from class org.apache.vxquery.compiler.rewriter.rules.AbstractCollectionRule

getCollectionName, rewritePost

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SetCollectionDataSourceRule

public SetCollectionDataSourceRule()

Method Detail

rewritePre

public boolean rewritePre(org.apache.commons.lang3.mutable.Mutable<org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator> opRef,
                          org.apache.hyracks.algebricks.core.algebra.base.IOptimizationContext context)
                   throws org.apache.hyracks.algebricks.common.exceptions.AlgebricksException

Throws:

org.apache.hyracks.algebricks.common.exceptions.AlgebricksException