1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.apache.commons.rdf.jena;
20
21 import org.apache.commons.rdf.api.Dataset;
22 import org.apache.commons.rdf.api.Graph;
23 import org.apache.jena.sparql.core.DatasetGraph;
24
25 /**
26 * A Jena-backed {@link Dataset}.
27 * <p>
28 * The underlying Jena {@link DatasetGraph} can be accessed with
29 * {@link #asJenaDatasetGraph()}.
30 */
31 public interface JenaDataset extends Dataset {
32
33 /**
34 * Return the underlying Jena {@link DatasetGraph}.
35 * <p>
36 * Changes to the Jena <em>dataset graph</em> are reflected in the Commons
37 * RDF dataset and vice versa.
38 *
39 * @return A Jena {@link DatasetGraph}
40 */
41 DatasetGraph asJenaDatasetGraph();
42
43 /**
44 * Return a union graph view of this dataset.
45 * <p>
46 * The <em>union graph</em> contains triples in any graph (including the
47 * default graph).
48 * <p>
49 * Changes in the union graph are reflected in the Commons RDF dataset and
50 * vice versa. Triples added to the graph are added to the default graph.
51 *
52 * @return A union {@link Graph}
53 */
54 JenaGraph getUnionGraph();
55
56 }