Module org.apache.jena.arq

Package org.apache.jena.sparql.expr

Class ExprTransformSubstitute

java.lang.Object

org.apache.jena.sparql.expr.ExprTransformCopy

org.apache.jena.sparql.expr.ExprTransformSubstitute

All Implemented Interfaces:

ExprTransform

public class ExprTransformSubstitute
extends ExprTransformCopy

An expression transformer that substitutes another expression in place of variables

Primarily introduced in order to support the new UserDefinedFunction capabilities

Field Summary

Fields inherited from class org.apache.jena.sparql.expr.ExprTransformCopy

COPY_ALWAYS, COPY_ONLY_ON_CHANGE

Constructor Summary

Constructors

Constructor	Description
ExprTransformSubstitute(Map<String,Expr> substitutions)	Creates an advanced transform that uses the given map to make substitutions
ExprTransformSubstitute(Var find, Expr replace)	Creates a simple transform that replaces any occurrence of the given variable with the given expression

Method Summary

Modifier and Type	Method	Description
Expr	transform(ExprVar exprVar)

Methods inherited from class org.apache.jena.sparql.expr.ExprTransformCopy

transform, transform, transform, transform, transform, transform, transform, transform, transform

Methods inherited from class java.lang.Object

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

Constructor Details

ExprTransformSubstitute

public ExprTransformSubstitute(Var find,
 Expr replace)

Creates a simple transform that replaces any occurrence of the given variable with the given expression

Parameters:

find - Variable to find

replace - Expression to replace with

ExprTransformSubstitute

public ExprTransformSubstitute(Map<String,Expr> substitutions)

Creates an advanced transform that uses the given map to make substitutions

Parameters:

substitutions - Substitutions from variables to expressions

Method Details

transform

public Expr transform(ExprVar exprVar)

Specified by:

transform in interface ExprTransform

Overrides:

transform in class ExprTransformCopy