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

Example 81 with Statement

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

the class UpdateTest method getAll.

static List<String> getAll(Resource r, Property p) {
    List<String> l = new ArrayList<>();
    ClosableIterator<Statement> cIter = r.listProperties(p);
    for (; cIter.hasNext(); ) {
        Statement stmt = cIter.next();
        String df = stmt.getObject().asResource().getURI();
        l.add(df);
    }
    cIter.close();
    return l;
}

Example 82 with Statement

use of org.apache.jena.rdf.model.Statement in project webofneeds by researchstudio-sat.

the class WonLinkedDataUtils method getWonNodeURIForNeedOrConnection.

public static URI getWonNodeURIForNeedOrConnection(final URI resURI, final Model resourceModel) {
    assert resourceModel != null : "model must not be null";
    // we didnt't get the queue name. Check if the model contains a triple <baseuri> won:hasWonNode
    // <wonNode> and get the information from there.
    logger.debug("getting WON node URI from model");
    Resource baseResource = resourceModel.getResource(resURI.toString());
    logger.debug("resourceModel: {}", RdfUtils.toString(resourceModel));
    StmtIterator wonNodeStatementIterator = baseResource.listProperties(WON.HAS_WON_NODE);
    if (!wonNodeStatementIterator.hasNext()) {
        // no won:hasWonNode triple found. we can't do anything.
        logger.debug("base resource {} has no won:hasWonNode property", baseResource);
        return null;
    }
    Statement stmt = wonNodeStatementIterator.nextStatement();
    RDFNode wonNodeNode = stmt.getObject();
    if (!wonNodeNode.isResource()) {
        logger.debug("won:hasWonNode property of base resource {} is not a resource", baseResource);
        return null;
    }
    URI wonNodeUri = URI.create(wonNodeNode.asResource().getURI().toString());
    logger.debug("obtained WON node URI: {}", wonNodeUri);
    if (wonNodeStatementIterator.hasNext()) {
        logger.warn("multiple WON node URIs found for resource {}, using first one: {} ", baseResource, wonNodeUri);
    }
    return wonNodeUri;
}

Example 83 with Statement

use of org.apache.jena.rdf.model.Statement in project webofneeds by researchstudio-sat.

the class ModelConverter method modelToGraphCollection.

private static GraphCollection modelToGraphCollection(String name, Model model, Map<String, String> pm) {
    // Convert each subj pred obj in Jena Statement into String and add to
    // SigningFramework's NamedGraph.
    // The simpler approach with just using Jena's writer and Signingframework's
    // reader to transform data between data structures won't work since
    // Signingframework has problems with recognizing the [] structure
    GraphCollection graphc = new GraphCollection();
    NamedGraph namedGraph = new NamedGraph(enclose(name, "<", ">"), 0, null);
    StmtIterator iterator = model.listStatements();
    while (iterator.hasNext()) {
        Statement stmt = iterator.nextStatement();
        String subjString = rdfNodeAsString(stmt.getSubject());
        String objString = rdfNodeAsString(stmt.getObject());
        String predString = enclose(stmt.getPredicate().asResource().getURI(), "<", ">");
        Triple gcTriple = new Triple(subjString, predString, objString);
        namedGraph.addTriple(gcTriple);
    }
    graphc.addGraph(namedGraph);
    for (String prefix : pm.keySet()) {
        graphc.addPrefix(new Prefix(prefix + ":", "<" + pm.get(prefix) + ">"));
    }
    return graphc;
}

Example 84 with Statement

use of org.apache.jena.rdf.model.Statement in project webofneeds by researchstudio-sat.

the class WonMessageValidatorTest method testAllGraphsSigned.

@Test
public void testAllGraphsSigned() throws IOException {
    // this check actually is redundant with other checks,
    // therefore the error message can be from any of those...
    // create a dataset where there is a non-signature graph that is not signed
    Dataset invalidDataset = WonRdfUtils.MessageUtils.copyByDatasetSerialization(new WonMessage(createMessageDataset)).getCompleteDataset();
    Model env2sigModel = invalidDataset.getNamedModel(CREATE_ENV2_SIG_NAME);
    StmtIterator iter = env2sigModel.listStatements(ResourceFactory.createResource(CREATE_ENV2_SIG_NAME), WONMSG.HAS_SIGNED_GRAPH_PROPERTY, RdfUtils.EMPTY_RDF_NODE);
    Statement stmtOld = iter.removeNext();
    Statement stmtNew = env2sigModel.createStatement(ResourceFactory.createResource(CREATE_ENV2_SIG_NAME), WONMSG.HAS_SIGNED_GRAPH_PROPERTY, ResourceFactory.createResource("test:resource:uri"));
    env2sigModel.add(stmtNew);
    WonMessageValidator validator = new WonMessageValidator();
    StringBuilder message = new StringBuilder();
    // validate this invalid dataset
    boolean valid = validator.validate(invalidDataset, message);
    Assert.assertTrue("validation is expected to fail", !valid);
    // actually
    Assert.assertTrue(message.toString().contains("signed_or_signature") || message.toString().contains("signer") || message.toString().contains("graph_uris"));
    // reset for further testing:
    env2sigModel.add(stmtOld);
    env2sigModel.remove(stmtNew);
}

Example 85 with Statement

use of org.apache.jena.rdf.model.Statement in project webofneeds by researchstudio-sat.

the class WonMessageValidatorTest method testSignatureChainParallelToEnvelopeChain.

@Test
@Ignore
public void testSignatureChainParallelToEnvelopeChain() throws IOException {
    // create a dataset where the first envelope references the signature of the second envelope instead of content's
    // and the 2nd references the signature of the content
    Dataset invalidDataset = WonRdfUtils.MessageUtils.copyByDatasetSerialization(new WonMessage(createMessageDataset)).getCompleteDataset();
    Model env1Model = invalidDataset.getNamedModel(CREATE_ENV1_NAME);
    StmtIterator iter = env1Model.listStatements(null, WONMSG.HAS_SIGNATURE_GRAPH_PROPERTY, RdfUtils.EMPTY_RDF_NODE);
    Statement stmtOld = iter.removeNext();
    iter = env1Model.listStatements(null, WONMSG.HAS_SIGNED_GRAPH_PROPERTY, RdfUtils.EMPTY_RDF_NODE);
    Statement stmtOld2 = iter.removeNext();
    Statement stmtNew = stmtOld.changeObject(ResourceFactory.createResource(CREATE_ENV1_SIG_NAME));
    env1Model.add(stmtNew);
    Statement stmtNew2 = stmtOld2.changeObject(ResourceFactory.createResource(CREATE_ENV1_NAME));
    env1Model.add(stmtNew2);
    Model env2Model = invalidDataset.getNamedModel(CREATE_ENV2_NAME);
    iter = env2Model.listStatements(null, WONMSG.HAS_SIGNATURE_GRAPH_PROPERTY, RdfUtils.EMPTY_RDF_NODE);
    Statement stmtOld3 = iter.removeNext();
    iter = env2Model.listStatements(null, WONMSG.HAS_SIGNED_GRAPH_PROPERTY, RdfUtils.EMPTY_RDF_NODE);
    Statement stmtOld4 = iter.removeNext();
    Statement stmtNew3 = stmtOld3.changeObject(ResourceFactory.createResource(CREATE_CONTENT_NAME_SIG));
    env2Model.add(stmtNew3);
    Statement stmtNew4 = stmtOld4.changeObject(ResourceFactory.createResource(CREATE_CONTENT_NAME));
    env2Model.add(stmtNew4);
    // String test = RdfUtils.writeDatasetToString(invalidDataset, Lang.TRIG);
    // System.out.println("OUT:\n" + test);
    WonMessageValidator validator = new WonMessageValidator();
    StringBuilder message = new StringBuilder();
    // validate this invalid dataset
    boolean valid = validator.validate(invalidDataset, message);
    Assert.assertTrue("validation is expected to fail", !valid);
    // actually
    Assert.assertTrue(message.toString().contains("signature_chain"));
    // reset for further testing:
    env1Model.add(stmtOld);
    env1Model.remove(stmtNew);
    env1Model.add(stmtOld2);
    env1Model.remove(stmtNew2);
    env2Model.add(stmtOld3);
    env2Model.remove(stmtNew3);
    env2Model.add(stmtOld4);
    env2Model.remove(stmtNew4);
}