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