Examples of com.hp.hpl.jena.reasoner.InfGraph

com.hp.hpl.jena.reasoner.InfGraph
Extends the Graph interface to give additional means to query an inferred graph. Many entailments from the raw data are made to appear as if they are extract triples in the inferred graph and so appear through the normal Graph.find interface. However, here are two extensions required. Firstly, the ability to ask about global properties of the whole graph (e.g. consistency). Secondly, the ability to temporarily construct expressions (encoded in RDF) which form more complex queries.

     *
     * @param model the Model containing both instance data and schema assertions to be inferenced over
     */
    public static InfModel createRDFSModel(Model model) {
         Reasoner reasoner = ReasonerRegistry.getRDFSReasoner();
         InfGraph graph = reasoner.bind( model.getGraph() );
         return new InfModelImpl( graph );
    }

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     * @param model a Model containing instance data assertions
     * @param schema a Model containing RDFS schema data
     */
    public static InfModel createRDFSModel( Model schema, Model model ) {
         Reasoner reasoner = ReasonerRegistry.getRDFSReasoner();
         InfGraph graph  = reasoner.bindSchema(schema.getGraph()).bind(model.getGraph());
         return new InfModelImpl( graph );
    }

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     * @param reasoner the reasoner to use to process the data
     * @param model the Model containing both instance data and schema assertions to be inferenced over, 
     * any statements added to the InfModel will be added to this underlying data model.
     */
    public static InfModel createInfModel( Reasoner reasoner, Model model ) {
         InfGraph graph = reasoner.bind(model.getGraph());
         return new InfModelImpl(graph);
    }

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     * @param schema a Model containing RDFS schema data
     * @param model a Model containing instance data assertions, any statements added to the InfModel
     * will be added to this underlying data model.
     */
    public static InfModel createInfModel(Reasoner reasoner, Model schema, Model model) {
         InfGraph graph = reasoner.bindSchema(schema.getGraph()).bind(model.getGraph());
         return new InfModelImpl( graph );
    }

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    public void testIntersectionNPE() {
        Model base = ModelFactory.createDefaultModel();
        base.read("file:testing/reasoners/bugs/bad-intersection.owl");
        boolean foundBadList = false;
        try {
            InfGraph infgraph = ReasonerRegistry.getOWLReasoner().bind(base.getGraph());
            ExtendedIterator<Triple> ci = infgraph.find(null, RDF.Nodes.type, OWL.Class.asNode());
            ci.close();
        } catch (ReasonerException e) {
            foundBadList = true;
        }
        assertTrue("Correctly detected the illegal list", foundBadList);

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    public Graph getGraph()
        { return getInfGraph(); }
    
    public void testInfGraph()
        {
        InfGraph ig = getInfGraph();
        assertSame( ig.getPrefixMapping(), ig.getRawGraph().getPrefixMapping() );
        }

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        assertSame( ig.getPrefixMapping(), ig.getRawGraph().getPrefixMapping() );
        }
    
    public void testInfReification()
        {
        InfGraph ig = getInfGraph();
        assertInstanceOf( BasicFBReifier.class, ig.getReifier() );
        }

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    public void testCreateInfModel() 
        {
        String rule = "-> (eg:r eg:p eg:v).";
        Reasoner r = new GenericRuleReasoner( Rule.parseRules(rule) );
        InfGraph ig = r.bind( ModelFactory.createDefaultModel().getGraph() );
        InfModel im = ModelFactory.createInfModel(ig);
        assertInstanceOf( InfModel.class, im );
        assertEquals( 1, im.size() );
        }

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        List<Rule> rules = Rule.parseRules(ruleSrc);
        Graph data = Factory.createGraphMem();
        for (int i = 0; i < triples.length; i++) {
            data.add(triples[i]);
        }
        InfGraph infgraph =  makeInfGraph(rules, data, tabled);
        ExtendedIterator<Triple> results = infgraph.find(query);
        assertTrue(results.hasNext());
        Triple result = results.next();
        results.close();
        Rule rule = rules.get(rulenumber);
        List<Triple> matchList = Arrays.asList(matches);
        Iterator<Derivation> derivations = infgraph.getDerivation(result);
        assertTrue(derivations.hasNext());
        RuleDerivation derivation = (RuleDerivation) derivations.next();
//        PrintWriter pw = new PrintWriter(System.out);
//        derivation.printTrace(pw, true);
//        pw.close();

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        Model data = ModelFactory.createDefaultModel();
        for (int i = 0; i < testSpec.length; i++) {
            Object[] test = testSpec[i];
            Reasoner r = (Reasoner)test[0];
            Boolean safe = (Boolean)test[1];
            InfGraph ig = r.bind(data.getGraph());
            assertEquals(r.toString(), safe.booleanValue(), ig.getCapabilities().findContractSafe());
        }
    }

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