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

Class ConstantOptimizer

java.lang.Object

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

All Implemented Interfaces:

QueryOptimizer

public class ConstantOptimizer
extends Object
implements QueryOptimizer

A query optimizer that optimizes constant value expressions.

Author:

James Leigh, Arjohn Kampman

Constructor Summary

Constructors

Constructor	Description
ConstantOptimizer(EvaluationStrategy strategy)

Method Summary

Modifier and Type	Method	Description
void	optimize(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings)	Applies generally applicable optimizations to the supplied query: variable assignments are inlined.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstantOptimizer

public ConstantOptimizer(EvaluationStrategy strategy)

Method Detail

optimize

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

Applies generally applicable optimizations to the supplied query: variable assignments are inlined.

Specified by:

optimize in interface QueryOptimizer