Module org.apache.jena.arq

Package org.apache.jena.sparql.pfunction

Class PFuncSimple

java.lang.Object

org.apache.jena.sparql.pfunction.PropertyFunctionBase

org.apache.jena.sparql.pfunction.PropertyFunctionEval

org.apache.jena.sparql.pfunction.PFuncSimple

All Implemented Interfaces:

PropertyFunction

Direct Known Subclasses:

assign, blankNode, container, PathPropertyFunction, PFuncAssignToObject, PFuncAssignToSubject, str

public abstract class PFuncSimple
extends PropertyFunctionEval

Common, simple case:

• arguments are not lists
• attempt to put values in for any bound variables
• call the implementation with one binding at a time

Method Summary

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

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

Method Details

execEvaluated

public final QueryIterator execEvaluated(Binding binding,
 PropFuncArg argSubject,
 org.apache.jena.graph.Node predicate,
 PropFuncArg argObject,
 ExecutionContext execCxt)

Specified by:

execEvaluated in class PropertyFunctionEval

Parameters:

binding - Current solution from previous query stage

argSubject - PropFuncArg, after substitution of any bound variables in this binding

predicate - This predicate

argObject - PropFuncArg, after substitution of any bound variables in this binding

execCxt - Execution context

Returns:

QueryIterator

execEvaluated

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