Examples with NamedGraph de.uni_koblenz.aggrimm.icp.crypto.sign.graph.NamedGraph used on opensource projects

Example 1 with NamedGraph

use of de.uni_koblenz.aggrimm.icp.crypto.sign.graph.NamedGraph in project webofneeds by researchstudio-sat.

the class ModelConverterTest method namedGraphToModelTest.

@Test
@Ignore
public /**
 * Reads from TRIG with Jena API into Dataset 1, transforms one
 * named Model from that Dataset into Signingframework's API
 * GraphCollection with one NamedGraph, transforms (converts)
 * that NamedGraph into Jena's Model, and checks
 * if the resulting Model is the same as original Model.
 */
void namedGraphToModelTest() throws Exception {
    for (String resourceFile : RESOURCE_FILES) {
        // prepare GraphCollection with NamedGraph to be converted:
        InputStream is = this.getClass().getResourceAsStream(resourceFile);
        Dataset dataset = DatasetFactory.createGeneral();
        RDFDataMgr.read(dataset, is, RDFFormat.TRIG.getLang());
        is.close();
        String modelName = dataset.listNames().next();
        Model model1 = dataset.getNamedModel(modelName);
        // this method is not tested here and used just for input
        // generation and to make it easier Namedgraph<->Model comparison
        // (but it's tested in other method, see modelToGraphCollectionTest())
        GraphCollection gc = ModelConverter.modelToGraphCollection(modelName, dataset);
        LinkedList<NamedGraph> graphs = gc.getGraphs();
        String graphName = null;
        for (NamedGraph g : graphs) {
            if (!g.getName().isEmpty() && g.getName().contains(modelName)) {
                graphName = g.getName();
                break;
            }
        }
        // use this when debugging:
        // File outFile0 = File.createTempFile("won", ".trig");
        // System.out.println(outFile0);
        // OutputStream os0 = new FileOutputStream(outFile0);
        // TriGPlusWriter.writeFile(gc, outFile0.getAbsolutePath(), false);
        // os0.close();
        // test convert from NamedGraph of GraphCollection into Model
        Model model2 = ModelConverter.namedGraphToModel(graphName, gc);
        Dataset dataset2 = DatasetFactory.createGeneral();
        dataset2.addNamedModel(modelName, model2);
        // TODO maybe chng the API so that the prefix map is taken care of in the converter:
        // if it makes sense from the the usage of this in Assembler point of view
        dataset2.getDefaultModel().setNsPrefixes(dataset2.getNamedModel(modelName).getNsPrefixMap());
        File outFile = testFolder.newFile();
        // use this when debugging:
        // File outFile = File.createTempFile("won", ".trig");
        // System.out.println(outFile);
        OutputStream os = new FileOutputStream(outFile);
        RDFDataMgr.write(os, dataset2, RDFFormat.TRIG.getLang());
        os.close();
        // make sure that the original Model that was used to generate test input
        // GraphCollection with NamedGraph is isomorphic with the Model after
        // conversion is applied:
        Assert.assertTrue(model1.listStatements().hasNext() && model2.listStatements().hasNext());
        Assert.assertTrue(model1.isIsomorphicWith(model2));
    }
}

Example 2 with NamedGraph

use of de.uni_koblenz.aggrimm.icp.crypto.sign.graph.NamedGraph 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;
}