コード例 #1
0
 /**
  * Example the conclusions graph for introduction of restrictions which require a comprehension
  * rewrite and declare new (anon) classes for those restrictions.
  */
 public void comprehensionAxioms(Model premises, Model conclusions) {
   // Comprehend all restriction declarations and note them in a map
   Map<Resource, Resource> comprehension = new HashMap<>();
   StmtIterator ri = conclusions.listStatements(null, RDF.type, OWL.Restriction);
   while (ri.hasNext()) {
     Resource restriction = ri.nextStatement().getSubject();
     StmtIterator pi = restriction.listProperties(OWL.onProperty);
     while (pi.hasNext()) {
       Resource prop = (Resource) pi.nextStatement().getObject();
       StmtIterator vi = restriction.listProperties();
       while (vi.hasNext()) {
         Statement rs = vi.nextStatement();
         if (!rs.getPredicate().equals(OWL.onProperty)) {
           // Have a restriction on(prop) of type rs in the conclusions
           // So assert a premise that such a restriction could exisit
           Resource comp =
               premises
                   .createResource()
                   .addProperty(RDF.type, OWL.Restriction)
                   .addProperty(OWL.onProperty, prop)
                   .addProperty(rs.getPredicate(), rs.getObject());
           comprehension.put(restriction, comp);
         }
       }
     }
   }
   // Comprehend any intersectionOf lists. Introduce anon class which has the form
   // of the intersection expression.
   // Rewrite queries of the form (X intersectionOf Y) to the form
   //   (X equivalentClass ?CC) (?CC intersectionOf Y)
   StmtIterator ii = conclusions.listStatements(null, OWL.intersectionOf, (RDFNode) null);
   List<Statement> intersections = new ArrayList<>();
   while (ii.hasNext()) {
     intersections.add(ii.nextStatement());
   }
   for (Statement is : intersections) {
     // Declare in the premises that such an intersection exists
     Resource comp =
         premises
             .createResource()
             .addProperty(RDF.type, OWL.Class)
             .addProperty(
                 OWL.intersectionOf, mapList(premises, (Resource) is.getObject(), comprehension));
     // Rewrite the conclusions to be a test for equivalence between the class being
     // queried and the comprehended interesection
     conclusions.remove(is);
     conclusions.add(is.getSubject(), OWL.equivalentClass, comp);
   }
   // Comprehend any oneOf lists
   StmtIterator io = conclusions.listStatements(null, OWL.oneOf, (RDFNode) null);
   while (io.hasNext()) {
     Statement s = io.nextStatement();
     Resource comp = premises.createResource().addProperty(OWL.oneOf, s.getObject());
   }
 }
コード例 #2
0
 /** Return a list of all tests of the given type, according to the current filters */
 public List<Resource> findTestsOfType(Resource testType) {
   ArrayList<Resource> result = new ArrayList<>();
   StmtIterator si = testDefinitions.listStatements(null, RDF.type, testType);
   while (si.hasNext()) {
     Resource test = si.nextStatement().getSubject();
     boolean accept = true;
     // Check test status
     Literal status = (Literal) test.getProperty(RDFTest.status).getObject();
     if (approvedOnly) {
       accept = status.getString().equals(STATUS_FLAGS[0]);
     } else {
       accept = false;
       for (String STATUS_FLAG : STATUS_FLAGS) {
         if (status.getString().equals(STATUS_FLAG)) {
           accept = true;
           break;
         }
       }
     }
     // Check for blocked tests
     for (String BLOCKED_TEST : BLOCKED_TESTS) {
       if (BLOCKED_TEST.equals(test.toString())) {
         accept = false;
       }
     }
     // End of filter tests
     if (accept) {
       result.add(test);
     }
   }
   return result;
 }
コード例 #3
0
  @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)));
  }
コード例 #4
0
 private Model JoinMap(Model map) {
   Model newMap = ModelFactory.createDefaultModel();
   StmtIterator stmts = map.listStatements();
   while (stmts.hasNext()) {
     Statement s = stmts.next();
     if (s.getSubject().isURIResource() || s.getObject().isURIResource()) {
       s =
           newMap.createStatement(
               checkUri(s.getSubject().asNode(), newMap).asResource(),
               s.getPredicate(),
               checkUri(s.getObject().asNode(), newMap));
     }
     newMap.add(s);
   }
   return newMap;
 }
コード例 #5
0
ファイル: Tutorial01.java プロジェクト: ifgrsha/jena
  public static void main(String args[]) {

    OntModel m = ModelFactory.createOntologyModel();
    OntDocumentManager dm = m.getDocumentManager();
    dm.addAltEntry(
        "http://www.eswc2006.org/technologies/ontology",
        "file:" + JENA + "src/examples/resources/eswc-2006-09-21.rdf");
    m.read("http://www.eswc2006.org/technologies/ontology");

    // create an empty model
    Model model = ModelFactory.createDefaultModel();

    // create the resource
    Resource johnSmith = model.createResource(personURI);

    // add the property
    johnSmith.addProperty(VCARD.FN, fullName);

    johnSmith.addProperty(
        VCARD.N,
        model.createResource().addProperty(VCARD.Given, "jon").addProperty(VCARD.Family, "Smit"));

    // list the statements in the Model
    StmtIterator iter = model.listStatements();

    // print out the predicate, subject and object of each statement
    while (iter.hasNext()) {
      Statement stmt = iter.nextStatement(); // get next statement
      Resource subject = stmt.getSubject(); // get the subject
      Property predicate = stmt.getPredicate(); // get the predicate
      RDFNode object = stmt.getObject(); // get the object

      System.out.print(subject.toString());
      System.out.print(" " + predicate.toString() + " ");
      if (object instanceof Resource) {
        System.out.print(object.toString());
      } else {
        // object is a literal
        System.out.print(" \"" + object.toString() + "\"");
      }

      System.out.println(" .");
    }
  }