de.fuberlin.wiwiss.ng4j.sparql
Class NamedGraphDataset

java.lang.Object
  de.fuberlin.wiwiss.ng4j.sparql.NamedGraphDataset

All Implemented Interfaces:

com.hp.hpl.jena.query.Dataset

public class NamedGraphDataset
extends Object
implements com.hp.hpl.jena.query.Dataset

Implementation of ARQ's Dataset interface on top of an NG4J NamedGraphSet

Constructor Summary

NamedGraphDataset(NamedGraphSet baseNamedGraphSet)
Creates a new instance whose default graph is the merge of all named graphs.

NamedGraphDataset(NamedGraphSet baseNamedGraphSet, Graph defaultGraph)
Creates a new instance with a given default graph.

NamedGraphDataset(NamedGraphSet baseNamedGraphSet, Node defaultGraphName)
Creates a new instance where one of the named graph is used as the default graph.

Method Summary

boolean	containsNamedModel(String uri)
Model	getDefaultModel()
Lock	getLock() Returns a LockMutex.
Model	getNamedModel(String graphName)
Iterator	listNames()

Methods inherited from class java.lang.Object

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

Constructor Detail

NamedGraphDataset

public NamedGraphDataset(NamedGraphSet baseNamedGraphSet)

Creates a new instance whose default graph is the merge of all named graphs.

NamedGraphDataset

public NamedGraphDataset(NamedGraphSet baseNamedGraphSet,
                         Node defaultGraphName)

Creates a new instance where one of the named graph is used as the default graph. The graph must already exist in the NamedGraphSet.

NamedGraphDataset

public NamedGraphDataset(NamedGraphSet baseNamedGraphSet,
                         Graph defaultGraph)

Creates a new instance with a given default graph.

Method Detail

containsNamedModel

public boolean containsNamedModel(String uri)

Specified by:

containsNamedModel in interface com.hp.hpl.jena.query.Dataset

getDefaultModel

public Model getDefaultModel()

Specified by:

getDefaultModel in interface com.hp.hpl.jena.query.Dataset

getNamedModel

public Model getNamedModel(String graphName)

Specified by:

getNamedModel in interface com.hp.hpl.jena.query.Dataset

listNames

public Iterator listNames()

Specified by:

listNames in interface com.hp.hpl.jena.query.Dataset

getLock

public Lock getLock()

Returns a LockMutex. I've no idea if this works or what it is supposed to do.

Specified by:

getLock in interface com.hp.hpl.jena.query.Dataset