com.hp.hpl.jena.ontology.OntModelSpec Java Examples

private void load(URL ontologyURL){
		try {
		    model = ModelFactory.createOntologyModel( OntModelSpec.OWL_MEM);
		    //String file="file:///"+System.getProperty("user.dir")+"/ont/lexicon.owl";
		    String file=ontologyURL.toExternalForm();
		    model.read(file,"RDF/XML");
		} catch (Exception e) {
			logger.warning("Ontology could not be loaded");
			e.printStackTrace();
		}
}
 

public static OntModel loadOntology(InputStream is) {
    OntModel m = ModelFactory.createOntologyModel(OntModelSpec.OWL_LITE_MEM);
    m.read(is, null);
    return m;
}
 

static void readOwlFile (String pathToOwlFile) {
        OntModel ontologyModel =
                ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM, null);
        ontologyModel.read(pathToOwlFile, "RDF/XML-ABBREV");
       // OntClass myClass = ontologyModel.getOntClass("namespace+className");

        OntClass myClass = ontologyModel.getOntClass(ResourcesUri.nwr+"domain-ontology#Motion");
        System.out.println("myClass.toString() = " + myClass.toString());
        System.out.println("myClass.getSuperClass().toString() = " + myClass.getSuperClass().toString());

        //List list =
              //  namedHierarchyRoots(ontologyModel);


       Iterator i = ontologyModel.listHierarchyRootClasses()
                .filterDrop( new Filter() {
                    public boolean accept( Object o ) {
                        return ((Resource) o).isAnon();
                    }} ); ///get all top nodes and excludes anonymous classes

       // Iterator i = ontologyModel.listHierarchyRootClasses();
        while (i.hasNext()) {
            System.out.println(i.next().toString());
/*            OntClass ontClass = ontologyModel.getOntClass(i.next().toString());
            if (ontClass.hasSubClass()) {

            }*/
        }

        String q = createSparql("event", "<http://www.newsreader-project.eu/domain-ontology#Motion>");
        System.out.println("q = " + q);
        QueryExecution qe = QueryExecutionFactory.create(q,
                ontologyModel);
        for (ResultSet rs = qe.execSelect() ; rs.hasNext() ; ) {
            QuerySolution binding = rs.nextSolution();
            System.out.println("binding = " + binding.toString());
            System.out.println("Event: " + binding.get("event"));
        }

        ontologyModel.close();
    }
 

/**
 * <p>
 * Answer a new ontology model which will process in-memory models of
 * ontologies expressed the default ontology language (OWL).
 * The default document manager
 * will be used to load the ontology's included documents.
 * </p>
 *
 * @param spec An ontology model specification that defines the language and reasoner to use
 * @param maker A model maker that is used to get the initial store for the ontology (unless
 * the base model is given),
 * and create addtional stores for the models in the imports closure
 * @param base The base model, which contains the contents of the ontology to be processed
 * @return A new ontology model
 * @see OntModelSpec
 */
public static OntModel createOntologyModel( OntModelSpec spec, ModelMaker maker, Model base ) {
    OntModelSpec _spec = new OntModelSpec( spec );
    _spec.setImportModelMaker( maker );

    return createOntologyModel( _spec, base );
}
 

/**
 * <p>
 * Answer a new ontology model which will process in-memory models of
 * ontologies in the given language.
 * The default document manager
 * will be used to load the ontology's included documents.
 * </p>
 *
 * @param languageURI The URI specifying the ontology language we want to process
 * @return A new ontology model
 * @see OntModelSpec#getDefaultSpec
 */
public static OntModel createOntologyModel( String languageURI ) {
    return createOntologyModel( OntModelSpec.getDefaultSpec( languageURI ), null );
}
 

/**
 * <p>
 * Answer a new ontology model, constructed according to the given ontology model specification,
 * and starting with the ontology data in the given model.
 * </p>
 *
 * @param spec An ontology model specification object, that will be used to construct the ontology
 * model with different options of ontology language, reasoner, document manager and storage model
 * @param base An existing model to treat as an ontology model, or null.
 * @return A new ontology model
 * @see OntModelSpec
 */
public static OntModel createOntologyModel( OntModelSpec spec, Model base ) {
    return new OntModelImpl( spec, base );
}
 

/**
 * Answer a new ontology model constructed according to the specification, which includes
 * a ModelMaker which will create the necessary base model.
*/
public static OntModel createOntologyModel( OntModelSpec spec )
    { return new OntModelImpl( spec ); }
 

/**
 * Constructs a new MapParser from a Jena model containing the RDF statements
 * from a D2RQ mapping file.
 * @param mapModel a Jena model containing the RDF statements from a D2RQ mapping file
 * @param baseURI used for relative URI patterns
 */
public D2RQReader(Model mapModel, String baseURI) {
	this.model = ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM, mapModel);
	this.baseURI = absolutizeURI(baseURI);
}