/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.clerezza.rdf.jena.sparql;
import com.hp.hpl.jena.query.Dataset;
import com.hp.hpl.jena.query.LabelExistsException;
import com.hp.hpl.jena.query.ReadWrite;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.shared.Lock;
import com.hp.hpl.jena.sparql.core.DatasetGraph;
import com.hp.hpl.jena.sparql.util.Context;
import java.util.Iterator;
import org.apache.clerezza.rdf.core.TripleCollection;
import org.apache.clerezza.rdf.core.UriRef;
import org.apache.clerezza.rdf.core.access.NoSuchEntityException;
import org.apache.clerezza.rdf.core.access.TcManager;
import org.apache.clerezza.rdf.jena.facade.JenaGraph;
/**
*
* @author rbn
*/
public class TcDataset implements Dataset {
private TcManager tcManager;
private TripleCollection defaultGraph;
TcDataset(TcManager tcManager, TripleCollection defaultGraph) {
this.tcManager = tcManager;
this.defaultGraph = defaultGraph;
}
@Override
public Model getDefaultModel() {
final JenaGraph jenaGraph = new JenaGraph(defaultGraph);
final Model model = ModelFactory.createModelForGraph(jenaGraph);
return model;
}
@Override
public Model getNamedModel(String name) {
final JenaGraph jenaGraph = new JenaGraph(
tcManager.getTriples(new UriRef(name)));
final Model model = ModelFactory.createModelForGraph(jenaGraph);
return model;
}
@Override
public boolean containsNamedModel(String name) {
try {
tcManager.getTriples(new UriRef(name));
return true;
} catch (NoSuchEntityException e) {
return false;
}
}
@Override
public Iterator<String> listNames() {
final Iterator<UriRef> tcs = tcManager.listTripleCollections().iterator();
return new Iterator<String>() {
@Override
public boolean hasNext() {
return tcs.hasNext();
}
@Override
public String next() {
UriRef next = tcs.next();
return next != null ? next.getUnicodeString() : null;
}
@Override
public void remove() {
throw new UnsupportedOperationException("Not supported yet.");
}
};
}
@Override
public Lock getLock() {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public DatasetGraph asDatasetGraph() {
return new TcDatasetGraph(tcManager, defaultGraph);
}
@Override
public void close() {
}
@Override
public void setDefaultModel( Model model ) {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public void addNamedModel( String uri, Model model ) throws LabelExistsException {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public void removeNamedModel( String uri ) {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public void replaceNamedModel( String uri, Model model ) {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public Context getContext() {
return null;
}
@Override
public boolean supportsTransactions() {
return false;
}
@Override
public void begin( ReadWrite readWrite ) {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public void commit() {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public void abort() {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public boolean isInTransaction() {
return false;
}
@Override
public void end() {
throw new UnsupportedOperationException("Not supported yet.");
}
}