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 org.fcrepo.kernel.modeshape.utils.FedoraTypesUtils.isInternalProperty; 019import static org.fcrepo.kernel.modeshape.utils.StreamUtils.iteratorToStream; 020import static org.slf4j.LoggerFactory.getLogger; 021 022import java.util.stream.Stream; 023 024import javax.jcr.RepositoryException; 025 026import org.fcrepo.kernel.api.identifiers.IdentifierConverter; 027import org.fcrepo.kernel.api.models.FedoraResource; 028import org.fcrepo.kernel.modeshape.rdf.impl.mappings.PropertyToTriple; 029 030import org.slf4j.Logger; 031 032import com.hp.hpl.jena.graph.Triple; 033import com.hp.hpl.jena.rdf.model.Resource; 034 035/** 036 * {@link NodeRdfContext} for RDF that derives from JCR properties on a Resource 037 * 038 * @author ajs6f 039 * @since Oct 10, 2013 040 */ 041public class PropertiesRdfContext extends NodeRdfContext { 042 043 private static final Logger LOGGER = getLogger(PropertiesRdfContext.class); 044 045 /** 046 * Default constructor. 047 * 048 * @param resource the resource 049 * @param idTranslator the id translator 050 * @throws RepositoryException if repository exception occurred 051 */ 052 053 public PropertiesRdfContext(final FedoraResource resource, 054 final IdentifierConverter<Resource, FedoraResource> idTranslator) 055 throws RepositoryException { 056 super(resource, idTranslator); 057 concat(triplesFromProperties(resource, 058 new PropertyToTriple(resource.getNode().getSession(), translator()))); 059 } 060 061 @SuppressWarnings("unchecked") 062 private static Stream<Triple> triplesFromProperties(final FedoraResource n, final PropertyToTriple propertyToTriple) 063 throws RepositoryException { 064 LOGGER.trace("Creating triples for node: {}", n); 065 return iteratorToStream(n.getNode().getProperties()) 066 .filter(isInternalProperty.negate()) 067 .flatMap(propertyToTriple); 068 } 069}