| /* |
| * 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; |
| |
| import org.apache.jena.graph.Graph; |
| import org.apache.jena.graph.Node; |
| import org.apache.jena.sparql.graph.GraphSink; |
| |
| |
| /** |
| * An always empty {@link DatasetGraph} that accepts changes but ignores them. |
| * |
| * @see DatasetGraphZero - a DSG that does not allow changes. |
| */ |
| public class DatasetGraphSink extends DatasetGraphNull { |
| |
| public static DatasetGraph create() { return new DatasetGraphSink(); } |
| |
| @Override |
| protected Graph createGraph() { |
| return GraphSink.instance(); |
| } |
| |
| public DatasetGraphSink() {} |
| |
| // Ignore all updates. |
| |
| @Override |
| public void add(Quad quad) { /* ignore */ } |
| |
| @Override |
| public void delete(Quad quad) { /* ignore */ } |
| |
| @Override |
| public void deleteAny(Node g, Node s, Node p, Node o) { /* ignore */ } |
| |
| @Override |
| public void setDefaultGraph(Graph g) { /* ignore */ } |
| |
| @Override |
| public void addGraph(Node graphName, Graph graph) { /* ignore */ } |
| |
| @Override |
| public void removeGraph(Node graphName) { /* ignore */ } |
| } |