de.fuberlin.wiwiss.d2rq.jena

Class GraphD2RQ

java.lang.Object

com.hp.hpl.jena.graph.impl.GraphBase

de.fuberlin.wiwiss.d2rq.jena.GraphD2RQ

All Implemented Interfaces:

Graph, GraphAdd, com.hp.hpl.jena.graph.impl.GraphWithPerform

Direct Known Subclasses:

CachingGraphD2RQ

public class GraphD2RQ
extends com.hp.hpl.jena.graph.impl.GraphBase
implements Graph

A D2RQ virtual read-only Jena graph backed by a non-RDF database.

Author:

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

Field Summary

Fields inherited from class com.hp.hpl.jena.graph.impl.GraphBase

bulkHandler, closed, gem, pm, queryHandler, reifier, statisticsHandler, style, TOSTRING_TRIPLE_BASE, TOSTRING_TRIPLE_LIMIT

Fields inherited from interface com.hp.hpl.jena.graph.Graph

emptyGraph

Constructor Summary

Constructors

Constructor and Description
GraphD2RQ(Mapping mapping) Creates a new D2RQ graph from a previously prepared Mapping instance.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	checkOpen()
void	close()
Capabilities	getCapabilities()
Mapping	getMapping()
com.hp.hpl.jena.util.iterator.ExtendedIterator<Triple>	graphBaseFind(TripleMatch m)
com.hp.hpl.jena.graph.query.QueryHandler	queryHandler() Returns a QueryHandler for this graph.

Methods inherited from class com.hp.hpl.jena.graph.impl.GraphBase

add, constructReifier, contains, contains, containsByFind, createStatisticsHandler, delete, dependsOn, find, find, forTestingOnly_graphBaseFind, getBulkUpdateHandler, getEventManager, getPrefixMapping, getReifier, getStatisticsHandler, getTransactionHandler, graphBaseContains, graphBaseFind, graphBaseSize, isClosed, isEmpty, isIsomorphicWith, notifyAdd, notifyDelete, performAdd, performDelete, reifierContains, reifierSize, reifierTriples, size, toString, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.hp.hpl.jena.graph.Graph

contains, contains, delete, dependsOn, find, find, getBulkUpdateHandler, getEventManager, getPrefixMapping, getReifier, getStatisticsHandler, getTransactionHandler, isClosed, isEmpty, isIsomorphicWith, size

Methods inherited from interface com.hp.hpl.jena.graph.GraphAdd

add

Constructor Detail

GraphD2RQ

public GraphD2RQ(Mapping mapping)
          throws D2RQException

Creates a new D2RQ graph from a previously prepared Mapping instance.

Parameters:

mapping - A D2RQ mapping

Throws:

D2RQException - If the mapping is invalid

Method Detail

queryHandler

public com.hp.hpl.jena.graph.query.QueryHandler queryHandler()

Returns a QueryHandler for this graph. The query handler class can be set by the mapping. It then must have exact constructor signature QueryHandler(Graph) For some reasons, Java does not allow to call getConstructor(GraphD2RQ.class) on SimpleQueryHandler class.

Specified by:

queryHandler in interface Graph

Overrides:

queryHandler in class com.hp.hpl.jena.graph.impl.GraphBase

close

public void close()

Specified by:

close in interface Graph

Overrides:

close in class com.hp.hpl.jena.graph.impl.GraphBase

getCapabilities

public Capabilities getCapabilities()

Specified by:

getCapabilities in interface Graph

Overrides:

getCapabilities in class com.hp.hpl.jena.graph.impl.GraphBase

graphBaseFind

public com.hp.hpl.jena.util.iterator.ExtendedIterator<Triple> graphBaseFind(TripleMatch m)

Specified by:

graphBaseFind in class com.hp.hpl.jena.graph.impl.GraphBase

checkOpen

protected void checkOpen()

Overrides:

checkOpen in class com.hp.hpl.jena.graph.impl.GraphBase

getMapping

public Mapping getMapping()

Returns:

The Mapping this graph is based on