001/*
002 * Copyright 2015 DuraSpace, Inc.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.fcrepo.kernel.modeshape.rdf.impl;
017
018import static com.hp.hpl.jena.graph.Triple.create;
019import static com.hp.hpl.jena.vocabulary.RDF.type;
020import static org.fcrepo.kernel.api.FedoraTypes.FEDORA_CONTAINER;
021import static org.fcrepo.kernel.api.RdfLexicon.BASIC_CONTAINER;
022import static org.fcrepo.kernel.api.RdfLexicon.CONTAINER;
023import static org.fcrepo.kernel.api.RdfLexicon.NON_RDF_SOURCE;
024import static org.fcrepo.kernel.api.RdfLexicon.RDF_SOURCE;
025
026import java.util.stream.Stream;
027import org.fcrepo.kernel.api.identifiers.IdentifierConverter;
028import org.fcrepo.kernel.api.models.Container;
029import org.fcrepo.kernel.api.models.FedoraResource;
030import org.fcrepo.kernel.api.models.NonRdfSource;
031
032import com.hp.hpl.jena.graph.Triple;
033import com.hp.hpl.jena.rdf.model.Resource;
034
035/**
036 * @author cabeer
037 * @since 9/16/14
038 */
039public class LdpRdfContext extends NodeRdfContext {
040
041
042    /**
043     * Default constructor.
044     *
045     * @param resource the resource
046     * @param idTranslator the id translator
047     */
048    public LdpRdfContext(final FedoraResource resource,
049                         final IdentifierConverter<Resource, FedoraResource> idTranslator) {
050        super(resource, idTranslator);
051
052        final Stream.Builder<Triple> builder = Stream.builder();
053
054        if (resource instanceof NonRdfSource) {
055            builder.accept(nonRdfSourceContext());
056        } else {
057            builder.accept(typeContext());
058        }
059
060        if (resource instanceof Container) {
061            builder.accept(containerContext());
062
063            if (!resource.hasType(FEDORA_CONTAINER)) {
064                builder.accept(defaultContainerContext());
065            }
066        }
067        concat(builder.build());
068    }
069
070    private Triple typeContext() {
071        return create(subject(), type.asNode(), RDF_SOURCE.asNode());
072    }
073
074    private Triple containerContext() {
075        return create(subject(), type.asNode(), CONTAINER.asNode());
076    }
077
078    private Triple defaultContainerContext() {
079        return create(subject(), type.asNode(), BASIC_CONTAINER.asNode());
080    }
081
082    private Triple nonRdfSourceContext() {
083        return create(subject(), type.asNode(), NON_RDF_SOURCE.asNode());
084    }
085}