com.hp.hpl.jena.rdf.model
Interface Selector

All Known Implementing Classes:

SimpleSelector

public interface Selector

A Statement selector.

Model includes list and query methods which will return all the statements which are selected by a selector object. This is the interface of such selector objects.

Version:

Release='$Name: $' Revision='$Revision: 1.2 $' Date='$Date: 2003/06/04 15:14:25 $'

Author:

bwm, kers

Method Summary

RDFNode	getObject() Answer the only RDFNode object that this Selector will match, or null if it can match more than a single node.
Property	getPredicate() Answer the only predicate Property that this Selector will match, or null if it can match more than a single property.
Resource	getSubject() Answer the only subject Resource that this Selector will match, or null if it can match more that a single resource.
boolean	isSimple() Answer true iff this Selector is completely characterised by its subject, predicate, and object fields.
boolean	test(Statement s) Determine whether a Statement should be selected.

Method Detail

test

public boolean test(Statement s)

Determine whether a Statement should be selected.

Parameters:

s - The statement to be considered.

Returns:

true if the statement has been selected.

getSubject

public Resource getSubject()

Answer the only subject Resource that this Selector will match, or null if it can match more that a single resource.

getPredicate

public Property getPredicate()

Answer the only predicate Property that this Selector will match, or null if it can match more than a single property.

getObject

public RDFNode getObject()

Answer the only RDFNode object that this Selector will match, or null if it can match more than a single node.

isSimple

public boolean isSimple()

Answer true iff this Selector is completely characterised by its subject, predicate, and object fields.