Examples of com.hp.hpl.jena.ontology.OntProperty

com.hp.hpl.jena.ontology.OntProperty

Interface encapsulating a property in an ontology. This is an extension to the standard {@link Property} interface, adding a collection of convenience methodsfor accessing the additional semantic features of properties in OWL and RDFS such as domain, range, inverse, etc. Not all such capabilities exist in all supported ontology languages.


    Resource a = model.getResource( ns + "a" );
    Resource b = model.getResource( ns + "b" );
    Resource c = model.getResource( ns + "c" );


    OntProperty higher = model.getOntProperty( ns + "higher" );


    assertIteratorValues( model.listStatements( null, higher, (RDFNode) null ),
        new Statement[] {
            model.createStatement( a, higher, b ),
            model.createStatement( b, higher, c ),

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    Individual a = model.getIndividual( ns + "a" );
    Individual b = model.getIndividual( ns + "b" );
    Individual c = model.getIndividual( ns + "c" );
    Individual d = model.getIndividual( ns + "d" );


    OntProperty higher = model.getOntProperty( ns + "higher" );


    assertIteratorValues( model.listStatements( null, higher, (RDFNode) null ),
        new Statement[] {
            model.createStatement( a, higher, b ),
            model.createStatement( b, higher, c ),

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    Individual Bob = model.getIndividual( ns + "Bob" );
    Individual Mom = model.getIndividual( ns + "Mom" );
    Individual Dad = model.getIndividual( ns + "Dad" );


    OntProperty hasParent = model.getObjectProperty( ns + "hasParent" );
    OntProperty hasFather = model.getObjectProperty( ns + "hasFather" );
    OntProperty hasMother = model.getObjectProperty( ns + "hasMother" );
    OntProperty topObjProp = model.getObjectProperty( OWL2.topObjectProperty.getURI() );


    model.prepare();


    assertTrue( ((PelletInfGraph) model.getGraph()).getKB().isConsistent() );

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  public void testPropertyAssertions2() {
    String ns = "urn:test:";


    OntModel model = ModelFactory.createOntologyModel( PelletReasonerFactory.THE_SPEC );
    OntClass Person = model.createClass( ns + "Person" );
    OntProperty hasFather = model.createObjectProperty( ns + "hasFather" );
    OntProperty hasBioFather = model.createObjectProperty( ns + "hasBioFather", true );
    hasBioFather.addSuperProperty( hasFather );
    Person.addSuperClass( model.createMinCardinalityRestriction( null, hasBioFather, 1 ) );


    Individual Bob = model.createIndividual( ns + "Bob", Person );
    Individual Dad = model.createIndividual( ns + "Dad", Person );
    Bob.addProperty( hasBioFather, Dad );

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    OntClass Country = model.createClass( ns + "Country" );
    Individual USA = model.createIndividual( ns + "USA", Country );
    Individual UnitedStates = model.createIndividual( ns + "UnitedStates", Country );


    OntProperty livesIn = model.createObjectProperty( ns + "livesIn" );
    livesIn.convertToFunctionalProperty();


    OntClass Person = model.createClass( ns + "Person" );
    Individual JohnDoe = model.createIndividual( ns + "JohnDoe", Person );
    JohnDoe.addProperty( livesIn, USA );
    JohnDoe.addProperty( livesIn, UnitedStates );

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  public void testMultipleDatatypes() {
    String ns = "urn:test:";


    OntModel model = ModelFactory.createOntologyModel( PelletReasonerFactory.THE_SPEC );


    OntProperty f = model.createDatatypeProperty( ns + "f" );
    f.addRange( XSD.xfloat );


    OntProperty d = model.createDatatypeProperty( ns + "d" );
    d.addRange( XSD.xdouble );


    OntClass C = model.createClass( ns + "C" );
    C.addSuperClass( model.createMinCardinalityRestriction( null, f, 5 ) );
    C.addSuperClass( model.createMinCardinalityRestriction( null, d, 5 ) );

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    OntModel model = ModelFactory.createOntologyModel( PelletReasonerFactory.THE_SPEC );
    Individual ind = model.createIndividual( ns + "test", OWL.Thing );
    for( int i = 0; i < datatypes.length; ) {
      Resource datatype = (Resource) datatypes[i++];
      OntProperty p = model.createDatatypeProperty( ns + "prop_" + datatype.getLocalName() );
      p.addRange( datatype );


      while( i < datatypes.length && datatypes[i] instanceof String ) {
        Literal value = model.createTypedLiteral( (String) datatypes[i], datatype.getURI() );
        ind.addProperty( p, value );
        i++;

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        while( i < datatypes.length && datatypes[i] instanceof String ) {
          OntModel model = ModelFactory
              .createOntologyModel( PelletReasonerFactory.THE_SPEC );
          Individual ind = model.createIndividual( ns + "test", OWL.Thing );


          OntProperty p = model.createDatatypeProperty( ns + "prop_"
              + datatype.getLocalName() );
          if( addRangeRestriction ) {
                      p.addRange( datatype );
                    }


          Literal value = model.createTypedLiteral( (String) datatypes[i], datatype
              .getURI() );
          ind.addProperty( p, value );

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    for( int i = 0; i < datatypes.length; ) {
      Resource datatype = (Resource) datatypes[i++];
      OntModel model = ModelFactory.createOntologyModel( PelletReasonerFactory.THE_SPEC );


      OntProperty p = model.createDatatypeProperty( ns + "prop" );
      p.addRange( datatype );


      int start = i;
      while( i < datatypes.length && datatypes[i] instanceof String ) {
        Individual ind = model.createIndividual( ns + "testInd" + i, OWL.Thing );
        Literal value = model.createTypedLiteral( (String) datatypes[i], datatype.getURI() );

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    Resource a = model.getResource( ns + "a" );
    Resource b = model.getResource( ns + "b" );
    Resource c = model.getResource( ns + "c" );


    OntProperty higher = model.getOntProperty( ns + "higher" );


    assertIteratorValues( model.listStatements( null, higher, (RDFNode) null ),
        new Statement[] {
            model.createStatement( a, higher, b ),
            model.createStatement( b, higher, c ),

View Full Code Here

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