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

Class DisjunctiveConstraintOptimizer

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.impl.DisjunctiveConstraintOptimizer

All Implemented Interfaces:

QueryOptimizer

@Deprecated(forRemoval=true,
            since="4.1.0")
public class DisjunctiveConstraintOptimizer
extends Object
implements QueryOptimizer

Deprecated, for removal: This API element is subject to removal in a future version.

A query optimizer that optimize disjunctive constraints on tuple expressions. Currently, this optimizer unions a clone of the underlying tuple expression with the original expression for each SameTerm operator, moving the SameTerm to the cloned tuple expression.

Author:

Arjohn Kampman, James Leigh

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	DisjunctiveConstraintOptimizer.OrSameTermOptimizer	Deprecated, for removal: This API element is subject to removal in a future version.

Constructor Summary

Constructors

Constructor	Description
DisjunctiveConstraintOptimizer()	Deprecated, for removal: This API element is subject to removal in a future version.

Method Summary

Modifier and Type	Method	Description
void	optimize(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings)	Deprecated, for removal: This API element is subject to removal in a future version.

Methods inherited from class java.lang.Object

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

Constructor Detail

DisjunctiveConstraintOptimizer

public DisjunctiveConstraintOptimizer()

Deprecated, for removal: This API element is subject to removal in a future version.

Method Detail

optimize

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

Deprecated, for removal: This API element is subject to removal in a future version.

Specified by:

optimize in interface QueryOptimizer