com.hp.hpl.jena.sparql.pfunction
Class PFuncAssignToObject

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.PFuncAssignToObject

All Implemented Interfaces:

PropertyFunction

public abstract class PFuncAssignToObject
extends PFuncSimple

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

Constructor Summary

PFuncAssignToObject()

Method Summary

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

PFuncAssignToObject

public PFuncAssignToObject()

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

calc

public abstract Node calc(Node node)