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 context an execution context giving access to other relevant data
     */
    @Override
    public void headAction(Node[] args, int length, RuleContext context) {
        boolean ok = false;
        InfGraph inf = context.getGraph();
        Graph raw = inf.getRawGraph();
        Graph deductions = inf.getDeductionsGraph();
        for (int i = 0; i < length; i++) {
            Node clauseN = getArg(i, args, context);
            if (Util.isNumeric(clauseN)) {
                int clauseIndex = Util.getIntValue(clauseN);
                Object clause = context.getRule().getBodyElement(clauseIndex);

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    /**
     * Shared implementation applicable to head or body
     */
    private void doHide(Node[] args, int length, RuleContext context ) {
        InfGraph g = context.getGraph();
        if (g instanceof FBRuleInfGraph) {
            for (int i = 0; i < length; i++) {
                ((FBRuleInfGraph)g).hideNode(args[i]);
            }
        } else {

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

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     * @return The derivations model, if one is defined, or else null
     */
    @Override
    public Model getDeductionsModel() {
        if (m_deductionsModel == null) {
            InfGraph infGraph = getInfGraph();
            if (infGraph != null) {
                Graph deductionsGraph = infGraph.getDeductionsGraph();
                if (deductionsGraph != null) {
                    m_deductionsModel = ModelFactory.createModelForGraph( deductionsGraph );
                }
            }
        }

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            boolean processImports = test.hasProperty(RDF.type, OWLTest.ImportEntailmentTest);
            Model premises = getDoc(test, RDFTest.premiseDocument, processImports);
            Model conclusions = getDoc(test, RDFTest.conclusionDocument);
            comprehensionAxioms(premises, conclusions);
            long t1 = System.currentTimeMillis();
            InfGraph graph = reasoner.bind(premises.getGraph());
            if (printProfile) {
                ((FBRuleInfGraph)graph).resetLPProfile(true);
            }
            Model result = ModelFactory.createModelForGraph(graph);
            boolean correct = WGReasonerTester.testConclusions(conclusions.getGraph(), result.getGraph());
            long t2 = System.currentTimeMillis();
            lastTestDuration = t2 - t1; 
            if (printProfile) {
                ((FBRuleInfGraph)graph).printLPProfile();
            }
            if (test.hasProperty(RDF.type, OWLTest.NegativeEntailmentTest)) {
                correct = !correct;
            }
            return correct;
        } else if (test.hasProperty(RDF.type, OWLTest.InconsistencyTest)) {
//            System.out.println("Starting: " + test);
            Model input = getDoc(test, RDFTest.inputDocument);
            long t1 = System.currentTimeMillis();
            InfGraph graph = reasoner.bind(input.getGraph());
            boolean correct = ! graph.validate().isValid();
            long t2 = System.currentTimeMillis();
            lastTestDuration = t2 - t1; 
            return correct;
        } else if (test.hasProperty(RDF.type, OWLTest.ConsistencyTest)) {
            // Not used normally becase we are not complete enough to prove consistency
//            System.out.println("Starting: " + test);
            Model input = getDoc(test, RDFTest.inputDocument);
            long t1 = System.currentTimeMillis();
            InfGraph graph = reasoner.bind(input.getGraph());
            boolean correct = graph.validate().isValid();
            long t2 = System.currentTimeMillis();
            lastTestDuration = t2 - t1; 
            return correct;
        } else {
            for (StmtIterator i = test.listProperties(RDF.type); i.hasNext(); ) {

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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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            return hasPropertyValue( getProfile().SUB_CLASS_OF(), "SUB_CLASS_OF", cls );
        }
        else {
            // we want the direct, not general relationship
            // first try to find an inf graph that can do the work for us
            InfGraph ig = null;
            if (getGraph() instanceof InfGraph) {
                ig = (InfGraph) getGraph();
            }
            else if (getGraph() instanceof OntModel) {
                OntModel m = (OntModel) getGraph();
                if (m.getGraph() instanceof InfGraph) {
                    ig = (InfGraph) m.getGraph();
                }
            }


            if (ig != null && ig.getReasoner().supportsProperty( ReasonerVocabulary.directSubClassOf )) {
                // we can look this up directly
                return hasPropertyValue( ReasonerVocabulary.directSubClassOf, "direct sub-class", cls );
            }
            else {
                // otherwise, not an inf-graph or the given inf-graph does not support direct directly (:-)

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            configuration.addProperty(ReasonerVocabulary.PROPtraceOn, "true")
                         .addProperty(ReasonerVocabulary.PROPderivationLogging, "true");
        }
        Reasoner reasoner = reasonerF.create(configuration);
        long t1 = System.currentTimeMillis();
        InfGraph graph = reasoner.bind(premises.getGraph());
        Model result = ModelFactory.createModelForGraph(graph);
        
        if (stats && graph instanceof FBRuleInfGraph) {
//            ((FBRuleInfGraph)graph).resetLPProfile(true);
        }

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

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