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

Class RegexAsStringFunctionOptimizer

java.lang.Object

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

All Implemented Interfaces:

QueryOptimizer

public class RegexAsStringFunctionOptimizer
extends Object
implements QueryOptimizer

A query optimizer that replaces REGEX with FunctionCalls that are equivalent operators

Author:

Jerven Bolleman

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	RegexAsStringFunctionOptimizer.RegexAsStringFunctionVisitor

Constructor Summary

Constructors

Constructor and Description
RegexAsStringFunctionOptimizer(ValueFactory vf)

Method Summary

Modifier and Type	Method and 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

RegexAsStringFunctionOptimizer

public RegexAsStringFunctionOptimizer(ValueFactory vf)

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