Package org.openrdf.model

Examples of org.openrdf.model.ValueFactory

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        sail.initialize();
        try {
            SailConnection sc = sail.getConnection();
            try {
                sc.begin();
                ValueFactory vf = sail.getValueFactory();
                sc.addStatement(vf.createURI("http://tinkerpop.com#1"), vf.createURI("http://tinkerpop.com#knows"), vf.createURI("http://tinkerpop.com#3"), vf.createURI("http://tinkerpop.com"));
                sc.addStatement(vf.createURI("http://tinkerpop.com#1"), vf.createURI("http://tinkerpop.com#name"), vf.createLiteral("marko"), vf.createURI("http://tinkerpop.com"));
                sc.addStatement(vf.createURI("http://tinkerpop.com#3"), vf.createURI("http://tinkerpop.com#name"), vf.createLiteral("josh"), vf.createURI("http://tinkerpop.com"));
                CloseableIteration<? extends Statement, SailException> results = sc.getStatements(null, null, null, false);
                try {
                    System.out.println("get statements: ?s ?p ?o ?g");
                    while (results.hasNext()) {
                        System.out.println(results.next());
                    }
                } finally {
                    results.close();
                }

                System.out.println("\nget statements: http://tinkerpop.com#3 ?p ?o ?g");
                results = sc.getStatements(vf.createURI("http://tinkerpop.com#3"), null, null, false);
                try {
                    while (results.hasNext()) {
                        System.out.println(results.next());
                    }
                } finally {
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    public void serialize( final EntityState entityState,
                           final boolean includeNonQueryable,
                           final Graph graph )
    {
        ValueFactory values = graph.getValueFactory();
        EntityReference identity = entityState.identity();
        URI entityUri = createEntityURI( values, identity );

        graph.add( entityUri,
                   Rdfs.TYPE,
                   values.createURI( Classes.toURI( first( entityState.entityDescriptor().types() ) ) ) );

        serializeProperties( entityState,
                             graph,
                             entityUri,
                             entityState.entityDescriptor(),
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            return; // Skip non-queryable
        }

        ValueType valueType = persistentProperty.valueType();

        final ValueFactory valueFactory = graph.getValueFactory();

        String propertyURI = persistentProperty.qualifiedName().toURI();
        URI predicate = valueFactory.createURI( propertyURI );
        String baseURI = propertyURI.substring( 0, propertyURI.indexOf( '#' ) ) + "/";

        if( valueType instanceof ValueCompositeType )
        {
            serializeValueComposite( subject, predicate, (ValueComposite) property, valueType,
                                     graph, baseURI, includeNonQueryable );
        }
        else
        {
            String stringProperty = valueSerializer.serialize( new Options().withoutTypeInfo(), property );
            final Literal object = valueFactory.createLiteral( stringProperty );
            graph.add( subject, predicate, object );
        }
    }
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                                          ValueType valueType,
                                          Graph graph,
                                          String baseUri,
                                          boolean includeNonQueryable )
    {
        final ValueFactory valueFactory = graph.getValueFactory();
        BNode collection = valueFactory.createBNode();
        graph.add( subject, predicate, collection );

        for( PropertyDescriptor persistentProperty : ( (ValueCompositeType) valueType ).properties() )
        {
            Object propertyValue = Qi4j.FUNCTION_COMPOSITE_INSTANCE_OF
                .map( (Composite) value )
                .state()
                .propertyFor( persistentProperty.accessor() )
                .get();

            if( propertyValue == null )
            {
                continue; // Skip null values
            }

            ValueType type = persistentProperty.valueType();
            if( type instanceof ValueCompositeType )
            {
                URI pred = valueFactory.createURI( baseUri, persistentProperty.qualifiedName().name() );
                serializeValueComposite( collection, pred, (ValueComposite) propertyValue, type, graph,
                                         baseUri + persistentProperty.qualifiedName().name() + "/",
                                         includeNonQueryable );
            }
            else
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    private void serializeAssociations( final EntityState entityState,
                                        final Graph graph, URI entityUri,
                                        final Iterable<? extends AssociationDescriptor> associations,
                                        final boolean includeNonQueryable )
    {
        ValueFactory values = graph.getValueFactory();

        // Associations
        for( AssociationDescriptor associationType : associations )
        {
            if( !( includeNonQueryable || associationType.queryable() ) )
            {
                continue; // Skip non-queryable
            }

            EntityReference associatedId = entityState.associationValueOf( associationType.qualifiedName() );
            if( associatedId != null )
            {
                URI assocURI = values.createURI( associationType.qualifiedName().toURI() );
                URI assocEntityURI = values.createURI( associatedId.toURI() );
                graph.add( entityUri, assocURI, assocEntityURI );
            }
        }
    }
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                                            final Graph graph,
                                            final URI entityUri,
                                            final Iterable<? extends AssociationDescriptor> associations,
                                            final boolean includeNonQueryable )
    {
        ValueFactory values = graph.getValueFactory();

        // Many-Associations
        for( AssociationDescriptor associationType : associations )
        {
            if( !( includeNonQueryable || associationType.queryable() ) )
            {
                continue; // Skip non-queryable
            }

            BNode collection = values.createBNode();
            graph.add( entityUri, values.createURI( associationType.qualifiedName().toURI() ), collection );
            graph.add( collection, Rdfs.TYPE, Rdfs.SEQ );

            ManyAssociationState associatedIds = entityState.manyAssociationValueOf( associationType.qualifiedName() );
            for( EntityReference associatedId : associatedIds )
            {
                URI assocEntityURI = values.createURI( associatedId.toURI() );
                graph.add( collection, Rdfs.LIST_ITEM, assocEntityURI );
            }
        }
    }
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    }

    public Iterable<Statement> serialize( final EntityDescriptor entityDescriptor )
    {
        Graph graph = new GraphImpl();
        ValueFactory values = graph.getValueFactory();
        URI entityTypeUri = values.createURI( Classes.toURI( first( entityDescriptor.types() ) ) );

        graph.add( entityTypeUri, Rdfs.TYPE, Rdfs.CLASS );
        graph.add( entityTypeUri, Rdfs.TYPE, OWL.CLASS );

        graph.add( entityTypeUri, Qi4jEntityType.TYPE, values.createLiteral( first( entityDescriptor.types() ).toString() ) );
        graph.add( entityTypeUri, Qi4jEntityType.QUERYABLE, values.createLiteral( entityDescriptor.queryable() ) );

        serializeMixinTypes( entityDescriptor, graph, entityTypeUri );

        serializePropertyTypes( entityDescriptor, graph, entityTypeUri );
        serializeAssociationTypes( entityDescriptor, graph, entityTypeUri );
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    private void serializeMixinTypes( final EntityDescriptor entityDescriptor,
                                      final Graph graph,
                                      final URI entityTypeUri )
    {
        ValueFactory values = graph.getValueFactory();

        // Mixin types
        for( Class<?> mixinType : entityDescriptor.mixinTypes() )
        {
            graph.add( entityTypeUri, Rdfs.SUB_CLASS_OF, values.createURI( Classes.toURI( mixinType ) ) );
        }
    }
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    private void serializeManyAssociationTypes( final EntityDescriptor entityDescriptor,
                                                final Graph graph,
                                                final URI entityTypeUri )
    {
        ValueFactory values = graph.getValueFactory();
        // ManyAssociations
        for( AssociationDescriptor manyAssociationType : entityDescriptor.state().manyAssociations() )
        {
            URI associationURI = values.createURI( manyAssociationType.qualifiedName().toURI() );
            graph.add( associationURI, Rdfs.DOMAIN, entityTypeUri );

            graph.add( associationURI, Rdfs.TYPE, Rdfs.SEQ );

            URI associatedURI = values.createURI( manyAssociationType.qualifiedName().toURI() );
            graph.add( associationURI, Rdfs.RANGE, associatedURI );
            graph.add( associationURI, Rdfs.RANGE, XMLSchema.ANYURI );
        }
    }
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    private void serializeAssociationTypes( final EntityDescriptor entityDescriptor,
                                            final Graph graph,
                                            final URI entityTypeUri )
    {
        ValueFactory values = graph.getValueFactory();
        // Associations
        for( AssociationDescriptor associationType : entityDescriptor.state().associations() )
        {
            URI associationURI = values.createURI( associationType.qualifiedName().toURI() );
            graph.add( associationURI, Rdfs.DOMAIN, entityTypeUri );
            graph.add( associationURI, Rdfs.TYPE, Rdfs.PROPERTY );

            URI associatedURI = values.createURI( Classes.toURI( Classes.RAW_CLASS.map( associationType.type() ) ) );
            graph.add( associationURI, Rdfs.RANGE, associatedURI );
            graph.add( associationURI, Rdfs.RANGE, XMLSchema.ANYURI );
        }
    }
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