Module org.apache.jena.arq

Package org.apache.jena.sparql.pfunction.library

Class assign

java.lang.Object

org.apache.jena.sparql.pfunction.PropertyFunctionBase

org.apache.jena.sparql.pfunction.PropertyFunctionEval

org.apache.jena.sparql.pfunction.PFuncSimple

org.apache.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	Description
assign()

Method Summary

Modifier and Type	Method	Description
QueryIterator	execEvaluated(Binding binding, org.apache.jena.graph.Node subject, org.apache.jena.graph.Node predicate, org.apache.jena.graph.Node object, ExecutionContext execCxt)

Methods inherited from class org.apache.jena.sparql.pfunction.PFuncSimple

execEvaluated

Methods inherited from class org.apache.jena.sparql.pfunction.PropertyFunctionEval

exec

Methods inherited from class org.apache.jena.sparql.pfunction.PropertyFunctionBase

build, exec

Methods inherited from class java.lang.Object

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

Constructor Details

assign

public assign()

Method Details

execEvaluated

public QueryIterator execEvaluated(Binding binding,
 org.apache.jena.graph.Node subject,
 org.apache.jena.graph.Node predicate,
 org.apache.jena.graph.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