001/* 002 * Licensed to DuraSpace under one or more contributor license agreements. 003 * See the NOTICE file distributed with this work for additional information 004 * regarding copyright ownership. 005 * 006 * DuraSpace licenses this file to you under the Apache License, 007 * Version 2.0 (the "License"); you may not use this file except in 008 * compliance with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.fcrepo.kernel.modeshape.rdf.impl; 019 020import static java.util.stream.Stream.of; 021import static org.apache.jena.graph.Triple.create; 022import static org.fcrepo.kernel.api.RdfLexicon.DESCRIBES; 023import static org.fcrepo.kernel.api.RdfLexicon.DESCRIBED_BY; 024 025import org.fcrepo.kernel.api.models.NonRdfSourceDescription; 026import org.fcrepo.kernel.api.models.FedoraBinary; 027import org.fcrepo.kernel.api.models.FedoraResource; 028import org.fcrepo.kernel.api.identifiers.IdentifierConverter; 029 030import org.apache.jena.graph.Node; 031import org.apache.jena.rdf.model.Resource; 032 033/** 034 * @author cabeer 035 * @author ajs6f 036 * @since 10/16/14 037 */ 038public class ContentRdfContext extends NodeRdfContext { 039 /** 040 * Default constructor. 041 * 042 * @param resource the resource 043 * @param idTranslator the idTranslator 044 */ 045 public ContentRdfContext(final FedoraResource resource, 046 final IdentifierConverter<Resource, FedoraResource> idTranslator) { 047 super(resource, idTranslator); 048 049 // if there's an accessible jcr:content node, include information about it 050 if (resource instanceof NonRdfSourceDescription) { 051 final FedoraResource contentNode = resource().getDescribedResource(); 052 final Node subject = uriFor(resource()); 053 final Node contentSubject = uriFor(contentNode); 054 // add triples representing parent-to-content-child relationship 055 concat(of(create(subject, DESCRIBES.asNode(), contentSubject))); 056 057 } else if (resource instanceof FedoraBinary) { 058 final FedoraResource description = resource.getDescription(); 059 concat(of(create(uriFor(resource), DESCRIBED_BY.asNode(), uriFor(description)))); 060 } 061 } 062}