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.http.commons.api.rdf; 017 018import static org.slf4j.LoggerFactory.getLogger; 019 020import java.util.Map; 021 022import javax.ws.rs.core.UriInfo; 023 024import com.hp.hpl.jena.rdf.model.Resource; 025import org.fcrepo.kernel.identifiers.IdentifierConverter; 026import org.fcrepo.kernel.models.FedoraResource; 027import org.fcrepo.kernel.utils.iterators.RdfStream; 028import org.slf4j.Logger; 029import org.springframework.context.ApplicationContext; 030import org.springframework.context.ApplicationContextAware; 031import org.springframework.stereotype.Component; 032 033import com.hp.hpl.jena.rdf.model.Model; 034 035/** 036 * Utility for injecting HTTP-contextual data into an RdfStream 037 * 038 * @author awoods 039 */ 040@Component 041public class HttpTripleUtil implements ApplicationContextAware { 042 043 private static final Logger LOGGER = getLogger(HttpTripleUtil.class); 044 045 private ApplicationContext applicationContext; 046 047 @Override 048 public void setApplicationContext(final ApplicationContext applicationContext) { 049 this.applicationContext = applicationContext; 050 } 051 052 /** 053 * Add additional models to the RDF dataset for the given resource 054 * 055 * @param rdfStream the source stream we'll add named models to 056 * @param resource the FedoraResourceImpl in question 057 * @param uriInfo a JAX-RS UriInfo object to build URIs to resources 058 * @param idTranslator the id translator 059 */ 060 public void addHttpComponentModelsForResourceToStream(final RdfStream rdfStream, 061 final FedoraResource resource, final UriInfo uriInfo, 062 final IdentifierConverter<Resource,FedoraResource> idTranslator) { 063 064 LOGGER.debug("Adding additional HTTP context triples to stream"); 065 for (final Map.Entry<String, UriAwareResourceModelFactory> e : getUriAwareTripleFactories() 066 .entrySet()) { 067 final String beanName = e.getKey(); 068 final UriAwareResourceModelFactory uriAwareResourceModelFactory = 069 e.getValue(); 070 LOGGER.debug("Adding response information using: {}", beanName); 071 072 final Model m = 073 uriAwareResourceModelFactory.createModelForResource( 074 resource, uriInfo, idTranslator); 075 rdfStream.concat(RdfStream.fromModel(m)); 076 } 077 078 } 079 080 private Map<String, UriAwareResourceModelFactory> getUriAwareTripleFactories() { 081 return applicationContext 082 .getBeansOfType(UriAwareResourceModelFactory.class); 083 } 084}