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.http.api.url;
019
020import static org.apache.jena.rdf.model.ModelFactory.createDefaultModel;
021import static org.apache.jena.rdf.model.ResourceFactory.createResource;
022import static org.fcrepo.kernel.api.RdfLexicon.HAS_FIXITY_SERVICE;
023import static org.fcrepo.kernel.api.RdfLexicon.HAS_TRANSACTION_SERVICE;
024import static org.fcrepo.kernel.api.RdfLexicon.REPOSITORY_ROOT;
025
026import org.apache.jena.rdf.model.Model;
027import org.apache.jena.rdf.model.Resource;
028
029import org.fcrepo.http.api.Transactions;
030import org.fcrepo.http.commons.api.rdf.UriAwareResourceModelFactory;
031import org.fcrepo.kernel.api.models.Binary;
032import org.fcrepo.kernel.api.models.FedoraResource;
033import org.fcrepo.kernel.api.models.NonRdfSourceDescription;
034
035import org.springframework.stereotype.Component;
036
037import javax.ws.rs.core.UriInfo;
038
039/**
040 * Inject our HTTP API methods into the object graphs
041 *
042 * @author awoods
043 */
044@Component
045public class HttpApiResources implements UriAwareResourceModelFactory {
046
047    @Override
048    public Model createModelForResource(final FedoraResource resource,
049        final UriInfo uriInfo) {
050
051        final Model model = createDefaultModel();
052
053        final Resource s = createResource(resource.getFedoraId().getFullId());
054
055        if (resource.hasType(REPOSITORY_ROOT.getURI())) {
056            addRepositoryStatements(uriInfo, model, s);
057        }
058
059        if (resource instanceof NonRdfSourceDescription && !resource.isMemento()) {
060            addContentStatements((Binary)resource.getDescribedResource(), model);
061        }
062        return model;
063    }
064
065    private static void addContentStatements(final Binary resource,
066                                             final Model model) {
067        // fcr:fixity
068        final Resource subject = createResource(resource.getFedoraId().getFullId());
069        model.add(subject, HAS_FIXITY_SERVICE, createResource(subject.getURI() +
070                "/fcr:fixity"));
071    }
072
073
074    private void addRepositoryStatements(final UriInfo uriInfo, final Model model,
075        final Resource s) {
076        // fcr:tx
077        model.add(s, HAS_TRANSACTION_SERVICE, createResource(uriInfo
078                .getBaseUriBuilder().path(Transactions.class)
079                .build().toASCIIString()));
080    }
081
082}