com.hp.hpl.jena.sparql.pfunction.library

Class assign

java.lang.Object

com.hp.hpl.jena.sparql.pfunction.PropertyFunctionBase

com.hp.hpl.jena.sparql.pfunction.PropertyFunctionEval

com.hp.hpl.jena.sparql.pfunction.PFuncSimple

com.hp.hpl.jena.sparql.pfunction.library.assign

All Implemented Interfaces:

PropertyFunction

public class assign
extends PFuncSimple

Assignment: does not change the value of an existing binding. Either the subject or object must be a constant or be a bound variable. If both are bound, it degenerates to a test of RDF term equality.

Constructor Summary

Constructors

Constructor and Description
assign()

Method Summary

Methods

Modifier and Type	Method and Description
QueryIterator	execEvaluated(Binding binding, Node subject, Node predicate, Node object, ExecutionContext execCxt)

Methods inherited from class com.hp.hpl.jena.sparql.pfunction.PFuncSimple

execEvaluated

Methods inherited from class com.hp.hpl.jena.sparql.pfunction.PropertyFunctionEval

exec

Methods inherited from class com.hp.hpl.jena.sparql.pfunction.PropertyFunctionBase

build, exec

Methods inherited from class java.lang.Object

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

Constructor Detail

assign

public assign()

Method Detail

execEvaluated

public QueryIterator execEvaluated(Binding binding,
                          Node subject,
                          Node predicate,
                          Node object,
                          ExecutionContext execCxt)

Specified by:

execEvaluated in class PFuncSimple

Parameters:

binding - Current solution from previous query stage

subject - Node in subject slot, after substitution if a bound variable in this binding

predicate - This predicate

object - Node in object slot, after substitution if a bound variable in this binding

execCxt - Execution context

Returns:

QueryIterator