/*
* 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.jena.web;
import com.hp.hpl.jena.graph.Graph ;
import com.hp.hpl.jena.graph.NodeFactory ;
import com.hp.hpl.jena.query.DatasetAccessor ;
import com.hp.hpl.jena.rdf.model.Model ;
import com.hp.hpl.jena.rdf.model.ModelFactory ;
/** Adapter between Dataset/Model level and DatasetGraph/Graph level */
public class DatasetAdapter implements DatasetAccessor
{
private final DatasetGraphAccessor updater ;
public DatasetAdapter(DatasetGraphAccessor updater) { this.updater = updater ; }
/** Get the default model of a Dataset */
@Override
public Model getModel()
{
Graph g = updater.httpGet() ;
return ModelFactory.createModelForGraph(g) ;
}
/** Get a named model of a Dataset */
@Override
public Model getModel(String graphUri)
{
Graph g = updater.httpGet(NodeFactory.createURI(graphUri)) ;
if ( g == null )
return null ;
return ModelFactory.createModelForGraph(g) ;
}
@Override
public boolean containsModel(String graphUri)
{
return updater.httpHead(NodeFactory.createURI(graphUri)) ;
}
/** Put (replace) the default model of a Dataset */
@Override
public void putModel(Model data)
{
updater.httpPut(data.getGraph()) ;
}
/** Put (create/replace) a named model of a Dataset */
@Override
public void putModel(String graphUri, Model data)
{
updater.httpPut(NodeFactory.createURI(graphUri), data.getGraph()) ;
}
/** Delete (which means clear) the default model of a Dataset */
@Override
public void deleteDefault()
{
updater.httpDelete() ;
}
/** Delete a named model of a Dataset */
@Override
public void deleteModel(String graphUri)
{
updater.httpDelete(NodeFactory.createURI(graphUri)) ;
}
/** Add statements to the default model of a Dataset */
@Override
public void add(Model data)
{
updater.httpPost(data.getGraph()) ;
}
/** Add statements to a named model of a Dataset */
@Override
public void add(String graphUri, Model data)
{
updater.httpPost(NodeFactory.createURI(graphUri), data.getGraph()) ;
}
}