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.slf4j.LoggerFactory.getLogger; 020 021import java.util.Iterator; 022 023import javax.jcr.Property; 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.google.common.collect.Iterators; 033import com.hp.hpl.jena.graph.Triple; 034import com.hp.hpl.jena.rdf.model.Resource; 035 036/** 037 * {@link NodeRdfContext} for RDF that derives from JCR properties on a Resource 038 * 039 * @author ajs6f 040 * @since Oct 10, 2013 041 */ 042public class PropertiesRdfContext extends NodeRdfContext { 043 044 private final PropertyToTriple property2triple; 045 046 private static final Logger LOGGER = getLogger(PropertiesRdfContext.class); 047 048 /** 049 * Default constructor. 050 * 051 * @param resource the resource 052 * @param idTranslator the id translator 053 * @throws RepositoryException if repository exception occurred 054 */ 055 056 public PropertiesRdfContext(final FedoraResource resource, 057 final IdentifierConverter<Resource, FedoraResource> idTranslator) 058 throws RepositoryException { 059 super(resource, idTranslator); 060 property2triple = new PropertyToTriple(session(), translator()); 061 concat(triplesFromProperties(resource())); 062 } 063 064 private Iterator<Triple> triplesFromProperties(final FedoraResource n) 065 throws RepositoryException { 066 LOGGER.trace("Creating triples for node: {}", n); 067 @SuppressWarnings("unchecked") 068 final Iterator<Property> nodeProps = n.getNode().getProperties(); 069 final Iterator<Property> properties = Iterators.filter(nodeProps, 070 isInternalProperty.negate()::test); 071 return flatMap(properties, property2triple); 072 } 073}