Examples with RDFNode org.apache.jena.rdf.model.RDFNode used on opensource projects

Example 56 with RDFNode

use of org.apache.jena.rdf.model.RDFNode in project jena by apache.

the class GeoSPARQLOperations method convertSRSDatatype.

private static Model convertSRSDatatype(Model inputModel, String outputSrsURI, GeometryDatatype outputDatatype) {
    if (outputSrsURI == null) {
        outputSrsURI = GeoSPARQLOperations.findModeSRS(inputModel);
    }
    if (outputDatatype == null || !GeometryDatatype.check(outputDatatype)) {
        LOGGER.warn("Output datatype {} is not a recognised for Geometry Literal. Defaulting to {}.", outputDatatype, WKTDatatype.URI);
        outputDatatype = WKTDatatype.INSTANCE;
    }
    // Iterate through all statements: toNodeValue geometry literals and just add the rest.
    Model outputModel = ModelFactory.createDefaultModel();
    outputModel.setNsPrefixes(inputModel.getNsPrefixMap());
    Iterator<Statement> statementIt = inputModel.listStatements();
    while (statementIt.hasNext()) {
        Statement statement = statementIt.next();
        RDFNode object = statement.getObject();
        if (object.isLiteral()) {
            handleLiteral(statement, outputModel, outputSrsURI, outputDatatype);
        } else {
            // Not a statement of interest so store for output.
            outputModel.add(statement);
        }
    }
    return outputModel;
}

Example 57 with RDFNode

use of org.apache.jena.rdf.model.RDFNode in project jena by apache.

the class SpatialIndex method getGeometryLiteralIndexItems.

/**
 * @param model
 * @param srsURI
 * @return GeometryLiteral items prepared for adding to SpatialIndex.
 * @throws SpatialIndexException
 */
private static Collection<SpatialIndexItem> getGeometryLiteralIndexItems(Model model, String srsURI) throws SpatialIndexException {
    List<SpatialIndexItem> items = new ArrayList<>();
    StmtIterator stmtIt = model.listStatements(null, Geo.HAS_GEOMETRY_PROP, (Resource) null);
    while (stmtIt.hasNext()) {
        Statement stmt = stmtIt.nextStatement();
        Resource feature = stmt.getSubject();
        Resource geometry = stmt.getResource();
        ExtendedIterator<RDFNode> nodeIter = model.listObjectsOfProperty(geometry, Geo.HAS_SERIALIZATION_PROP);
        if (!nodeIter.hasNext()) {
            NodeIterator wktNodeIter = model.listObjectsOfProperty(geometry, Geo.AS_WKT_PROP);
            NodeIterator gmlNodeIter = model.listObjectsOfProperty(geometry, Geo.AS_GML_PROP);
            nodeIter = wktNodeIter.andThen(gmlNodeIter);
        }
        while (nodeIter.hasNext()) {
            Literal geometryLiteral = nodeIter.next().asLiteral();
            GeometryWrapper geometryWrapper = GeometryWrapper.extract(geometryLiteral);
            try {
                // Ensure all entries in the target SRS URI.
                GeometryWrapper transformedGeometryWrapper = geometryWrapper.convertSRS(srsURI);
                Envelope envelope = transformedGeometryWrapper.getEnvelope();
                SpatialIndexItem item = new SpatialIndexItem(envelope, feature);
                items.add(item);
            } catch (FactoryException | MismatchedDimensionException | TransformException ex) {
                throw new SpatialIndexException("Transformation Exception: " + geometryLiteral + ". " + ex.getMessage());
            }
        }
    }
    return items;
}

Example 58 with RDFNode

use of org.apache.jena.rdf.model.RDFNode in project jena by apache.

the class SecurityExample method main.

/**
 * @param args
 */
public static void main(String[] args) {
    String[] names = { "alice", "bob", "chuck", "darla" };
    RDFNode msgType = ResourceFactory.createResource("http://example.com/msg");
    Property pTo = ResourceFactory.createProperty("http://example.com/to");
    Property pFrom = ResourceFactory.createProperty("http://example.com/from");
    Property pSubj = ResourceFactory.createProperty("http://example.com/subj");
    Model model = ModelFactory.createDefaultModel();
    URL url = SecurityExample.class.getClassLoader().getResource("org/apache/jena/security/example/example.ttl");
    model.read(url.toExternalForm());
    ResIterator ri = model.listSubjectsWithProperty(RDF.type, msgType);
    System.out.println("All the messages");
    while (ri.hasNext()) {
        Resource msg = ri.next();
        Statement to = msg.getProperty(pTo);
        Statement from = msg.getProperty(pFrom);
        Statement subj = msg.getProperty(pSubj);
        System.out.println(String.format("%s to: %s  from: %s  subj: %s", msg, to.getObject(), from.getObject(), subj.getObject()));
    }
    System.out.println();
    ExampleEvaluator evaluator = new ExampleEvaluator(model);
    model = Factory.getInstance(evaluator, "http://example.com/SecuredModel", model);
    for (String userName : names) {
        evaluator.setPrincipal(userName);
        System.out.println("Messages " + userName + " can manipulate");
        ri = model.listSubjectsWithProperty(RDF.type, msgType);
        while (ri.hasNext()) {
            Resource msg = ri.next();
            Statement to = msg.getProperty(pTo);
            Statement from = msg.getProperty(pFrom);
            Statement subj = msg.getProperty(pSubj);
            System.out.println(String.format("%s to: %s  from: %s  subj: %s", msg, to.getObject(), from.getObject(), subj.getObject()));
        }
        ri.close();
        for (String name : names) {
            System.out.println(String.format("%s messages to %s", model.listSubjectsWithProperty(pTo, name).toList().size(), name));
        }
        System.out.println();
    }
}

Example 59 with RDFNode

use of org.apache.jena.rdf.model.RDFNode in project jena by apache.

the class SecuredModelTest method testRDFNodeInModel.

@Test
public void testRDFNodeInModel() {
    // test uri
    final RDFNode rdfNode = ResourceFactory.createResource("http://exmple.com/testInModel");
    final RDFNode rdfNode2 = rdfNode.inModel(securedModel);
    Assert.assertEquals("Should have placed RDFNode in secured securedModel", securedModel, rdfNode2.getModel());
}

Example 60 with RDFNode

use of org.apache.jena.rdf.model.RDFNode in project jena by apache.

the class SecuredModelTest method testAnonymousInModel.

@Test
public void testAnonymousInModel() {
    // test anonymous
    final RDFNode rdfNode = ResourceFactory.createResource();
    final RDFNode rdfNode2 = rdfNode.inModel(securedModel);
    Assert.assertEquals("Should have placed RDFNode in secured securedModel", securedModel, rdfNode2.getModel());
}