Package org.eclipse.rdf4j.query.algebra.evaluation.optimizer

Class ParentReferenceCleaner

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.optimizer.ParentReferenceCleaner

All Implemented Interfaces:

QueryOptimizer

public class ParentReferenceCleaner
extends Object
implements QueryOptimizer

Cleans up QueryModelNode.getParentNode() references that have become inconsistent with the actual algebra tree structure due to optimization operations. Typically used at the very end of the optimization pipeline.

Author:

Jeen Broekstra

Constructor Summary

Constructors

Constructor	Description
ParentReferenceCleaner()

Method Summary

Modifier and Type	Method	Description
void	optimize(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings)

Methods inherited from class java.lang.Object

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

Constructor Details

ParentReferenceCleaner

public ParentReferenceCleaner()

Method Details

optimize

public void optimize(TupleExpr tupleExpr,
 Dataset dataset,
 BindingSet bindings)

Specified by:

optimize in interface QueryOptimizer