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* 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.assembler;
import static java.nio.file.Files.createTempFile;
import static org.apache.jena.assembler.JA.MemoryModel ;
import static org.apache.jena.assembler.JA.data ;
import static org.apache.jena.assembler.Mode.DEFAULT;
import static org.apache.jena.query.DatasetFactory.createTxnMem;
import static org.apache.jena.rdf.model.ModelFactory.createDefaultModel;
import static org.apache.jena.riot.Lang.NQUADS;
import static org.apache.jena.riot.RDFDataMgr.write;
import static org.apache.jena.riot.RDFFormat.NTRIPLES;
import static org.apache.jena.sparql.core.assembler.DatasetAssemblerVocab.pGraphName;
import static org.apache.jena.sparql.core.assembler.DatasetAssemblerVocab.pNamedGraph;
import static org.apache.jena.vocabulary.RDF.type;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.file.Path;
import java.util.Iterator;
import org.apache.jena.assembler.JA ;
import org.apache.jena.assembler.exceptions.CannotConstructException;
import org.apache.jena.graph.Node;
import org.apache.jena.query.Dataset;
import org.apache.jena.rdf.model.Model;
import org.apache.jena.rdf.model.Resource;
import org.apache.jena.rdf.model.Statement;
import org.apache.jena.sparql.core.DatasetGraph;
import org.apache.jena.sparql.core.Quad;
import org.junit.Assert;
import org.junit.Test;
/**
* Tests for {@link InMemDatasetAssembler}
*
*/
public class TestInMemDatasetAssembler extends Assert {
private Dataset assemble(final Resource example) {
Model model = example.getModel() ;
model.setNsPrefix("ja", JA.getURI()) ;
// System.out.println("-------------");
// RDFDataMgr.write(System.out, model, Lang.TTL) ;
final InMemDatasetAssembler testAssembler = new InMemDatasetAssembler();
return testAssembler.open(testAssembler, example, DEFAULT);
}
@Test
public void emptyDataset() {
final Model model = createDefaultModel();
final Resource empty = model.createResource("test:empty");
empty.addProperty(type, DatasetAssemblerVocab.tDatasetTxnMem) ;
Dataset dataset = assemble(empty) ;
assertFalse(dataset.asDatasetGraph().find().hasNext()) ;
}
@Test
public void directDataLinkForDefaultAndNamedGraphs() throws IOException {
// first make a file of triples to load later
final Model model = createDefaultModel();
final Path triples = createTempFile("simpleExample", ".nt");
final Resource triplesURI = model.createResource(triples.toFile().toURI().toString());
final Resource simpleExample = model.createResource("test:simpleExample");
simpleExample.addProperty(type, DatasetAssemblerVocab.tDatasetTxnMem);
// add a default graph
simpleExample.addProperty(data, triplesURI);
// add a named graph
final Resource namedGraphDef = model.createResource("test:namedGraphDef");
simpleExample.addProperty(pNamedGraph, namedGraphDef);
final Resource namedGraphName = model.createResource("test:namedGraphExample");
namedGraphDef.addProperty(type, MemoryModel);
namedGraphDef.addProperty(pGraphName, namedGraphName);
namedGraphDef.addProperty(data, triplesURI);
try (OutputStream out = new FileOutputStream(triples.toFile())) {
write(out, model, NTRIPLES);
}
final Dataset dataset = assemble(simpleExample);
final Model assembledDefaultModel = dataset.getDefaultModel();
final Model assembledNamedModel = dataset.getNamedModel(namedGraphName.getURI());
// we put the same triples in each model, so we check for the same triples in each model
for (final Model m : new Model[] { assembledDefaultModel, assembledNamedModel }) {
assertTrue(m.contains(simpleExample, pNamedGraph, namedGraphDef));
assertTrue(m.contains(namedGraphDef, pGraphName, namedGraphName));
assertTrue(m.contains(simpleExample, data, triplesURI));
}
final Iterator<Node> graphNodes = dataset.asDatasetGraph().listGraphNodes();
assertTrue(graphNodes.hasNext());
assertEquals(namedGraphName.asNode(), graphNodes.next());
assertFalse(graphNodes.hasNext());
}
@Test
public void directDataLinkToQuads() throws IOException {
// first make a file of quads to load later
final Model model = createDefaultModel();
final Path quads = createTempFile("quadExample", ".nq");
final Resource quadsURI = model.createResource(quads.toFile().toURI().toString());
final Resource simpleExample = model.createResource("test:simpleExample");
simpleExample.addProperty(type, DatasetAssemblerVocab.tDatasetTxnMem);
simpleExample.addProperty(data, quadsURI);
final DatasetGraph dsg = createTxnMem().asDatasetGraph();
model.listStatements().mapWith(Statement::asTriple).mapWith(t -> new Quad(quadsURI.asNode(), t))
.forEachRemaining(dsg::add);
try (OutputStream out = new FileOutputStream(quads.toFile())) {
write(out, dsg, NQUADS);
}
final Dataset dataset = assemble(simpleExample);
final Model assembledDefaultModel = dataset.getDefaultModel();
final Model assembledNamedModel = dataset.getNamedModel(quadsURI.getURI());
assertTrue(assembledDefaultModel.isEmpty());
assertTrue(assembledNamedModel.contains(assembledNamedModel.createStatement(simpleExample, data, quadsURI)));
}
@Test(expected = CannotConstructException.class)
public void wrongKindOfAssemblerDefinition() {
final Model model = createDefaultModel();
final Resource badExample = model.createResource("test:badExample");
assemble(badExample);
}
}