de.fuberlin.wiwiss.ng4j
Class NamedGraphStatement

java.lang.Object
  com.hp.hpl.jena.rdf.model.impl.StatementBase
      com.hp.hpl.jena.rdf.model.impl.StatementImpl
          de.fuberlin.wiwiss.ng4j.NamedGraphStatement

All Implemented Interfaces:

FrontsTriple, Statement

public class NamedGraphStatement
extends com.hp.hpl.jena.rdf.model.impl.StatementImpl

A Statement which can provide provenance information about the NamedGraphs in which it is contained. NamedGraphStatements are used in NamedGraphModels. Those are backed by a NamedGraphSet. The NamedGraphStatement knows in which graphs from that set it is contained.

TODO: Write tests for NamedGraphStatement

Author:

Chris Bizer, Richard Cyganiak (richard@cyganiak.de)

Field Summary

Fields inherited from class com.hp.hpl.jena.rdf.model.impl.StatementImpl

empty, object, predicate, subject

Fields inherited from class com.hp.hpl.jena.rdf.model.impl.StatementBase

model

Constructor Summary

NamedGraphStatement(Resource s, Property p, RDFNode o, NamedGraphModel m)

Method Summary

NamedGraph	getGraph() Returns a NamedGraph that contains the statement.
Resource	getGraphName() Returns a NamedGraph that contains the statement.
Iterator	listGraphNames() Returns the names of NamedGraphs containing the statement as Jena Resources.
Iterator	listGraphs() Finds the NamedGraphs which contain the statement.
Iterator	listQuads() Finds all Quads which contain the subject, predicate and object of the statement.

Methods inherited from class com.hp.hpl.jena.rdf.model.impl.StatementImpl

asResource, asTriple, asTriples, createObject, createReifiedStatement, createReifiedStatement, equals, getAlt, getBag, getLiteral, getObject, getObject, getPredicate, getProperty, getResource, getResource, getSeq, getStatementProperty, getSubject, hashCode, isReified, listReifiedStatements, remove, removeReification, replace, toStatement

Methods inherited from class com.hp.hpl.jena.rdf.model.impl.StatementBase

changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, getBoolean, getByte, getChar, getDouble, getFloat, getInt, getLanguage, getLong, getModel, getShort, getString, getWellFormed, hasWellFormedXML, mustBeResource, objectString, stringReplace, stringReplace, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.hp.hpl.jena.rdf.model.Statement

changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, changeObject, getBoolean, getByte, getChar, getDouble, getFloat, getInt, getLanguage, getLong, getModel, getShort, getString, getWellFormed, hasWellFormedXML

Constructor Detail

NamedGraphStatement

public NamedGraphStatement(Resource s,
                           Property p,
                           RDFNode o,
                           NamedGraphModel m)

Method Detail

getGraph

public NamedGraph getGraph()

Returns a NamedGraph that contains the statement. If several graphs contain the statement, one of them will be returned arbitrarily. null will be returned if no graph contains the statement.

Returns:

A NamedGraph containing the statement

getGraphName

public Resource getGraphName()

Returns a NamedGraph that contains the statement. If several graphs contain the statement, one of them will be returned arbitrarily. null will be returned if no graph contains the statement.

Returns:

The name of a NamedGraph containing the statement

listGraphs

public Iterator listGraphs()

Finds the NamedGraphs which contain the statement.

Returns:

An iterator over NamedGraphs.

listGraphNames

public Iterator listGraphNames()

Returns the names of NamedGraphs containing the statement as Jena Resources. They can be handy for creating Statements about the graphs.

Returns:

An iterator over Jena Resources.

listQuads

public Iterator listQuads()

Finds all Quads which contain the subject, predicate and object of the statement.

Returns:

an iterator over Quads.