com.hp.hpl.jena.sparql.pfunction

Class PFuncAssignToSubject

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.PFuncAssignToSubject

All Implemented Interfaces:

PropertyFunction

public abstract class PFuncAssignToSubject
extends PFuncSimple

Common case: take a node (object) and calculate something else, assign it to a variable (subject)

Constructor Summary

Constructors

Constructor and Description
PFuncAssignToSubject()

Method Summary

Methods

Modifier and Type	Method and Description
abstract Node	calc(Node node)
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

PFuncAssignToSubject

public PFuncAssignToSubject()

Method Detail

execEvaluated

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

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

calc

public abstract Node calc(Node node)