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

Class UnionScopeChangeOptimizer

java.lang.Object

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

All Implemented Interfaces:

QueryOptimizer

public class UnionScopeChangeOptimizer
extends Object
implements QueryOptimizer

Inspect Union clauses to check if scope change can be avoided (allowing injection of pre-bound vars into union arguments).

Author:

Jeen Broekstra

Constructor Summary

Constructors

Constructor	Description
UnionScopeChangeOptimizer()

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

UnionScopeChangeOptimizer

public UnionScopeChangeOptimizer()

Method Details

optimize

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

Specified by:

optimize in interface QueryOptimizer