Пример #1
0
 /**
  * Determine whether the given property is recognized and treated specially by this reasoner. This
  * is a convenience packaging of a special case of getCapabilities.
  *
  * @param property the property which we want to ask the reasoner about, given as a Node since
  *     this is part of the SPI rather than API
  * @return true if the given property is handled specially by the reasoner.
  */
 @Override
 public boolean supportsProperty(Property property) {
   if (factory == null) return false;
   Model caps = factory.getCapabilities();
   Resource root = caps.getResource(factory.getURI());
   return caps.contains(root, ReasonerVocabulary.supportsP, property);
 }
  @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
  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());
  }