/*
* 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.sparql.core.mem;
import org.apache.jena.graph.Node;
import org.apache.jena.shared.PrefixMapping;
import org.apache.jena.sparql.core.DatasetPrefixStorage;
import org.apache.jena.sparql.core.GraphView;
/**
* A {@link GraphView} specialization that relies on the {@link DatasetGraphInMemory} from which this graph is drawn to
* manage prefixes.
*
*/
public class GraphInMemory extends GraphView {
private final DatasetGraphInMemory datasetGraph;
GraphInMemory(final DatasetGraphInMemory dsg, final Node gn) {
super(dsg, gn);
this.datasetGraph = dsg;
}
@Override
protected PrefixMapping createPrefixMapping() {
final DatasetPrefixStorage prefixes = datasetGraph().prefixes();
return isDefaultGraph() || isUnionGraph() ? prefixes.getPrefixMapping() : prefixes
.getPrefixMapping(getGraphName().getURI());
}
private DatasetGraphInMemory datasetGraph() {
return datasetGraph;
}
}