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.api.utils.UncheckedPredicate.uncheck; 020import static org.slf4j.LoggerFactory.getLogger; 021 022import java.util.Iterator; 023import java.util.function.Predicate; 024 025import javax.jcr.Property; 026import javax.jcr.RepositoryException; 027 028import org.fcrepo.kernel.api.identifiers.IdentifierConverter; 029import org.fcrepo.kernel.api.models.FedoraResource; 030import org.fcrepo.kernel.modeshape.rdf.impl.mappings.PropertyToTriple; 031 032import org.slf4j.Logger; 033 034import com.google.common.collect.Iterators; 035import com.hp.hpl.jena.graph.Triple; 036import com.hp.hpl.jena.rdf.model.Resource; 037 038/** 039 * {@link NodeRdfContext} for RDF that derives from JCR properties on a Resource 040 * 041 * @author ajs6f 042 * @since Oct 10, 2013 043 */ 044public class PropertiesRdfContext extends NodeRdfContext { 045 046 private final PropertyToTriple property2triple; 047 048 private static final Logger LOGGER = getLogger(PropertiesRdfContext.class); 049 050 private static final Predicate<Property> IS_NOT_UUID = uncheck(p -> !p.getName().equals("jcr:uuid")); 051 052 /** 053 * Default constructor. 054 * 055 * @param resource the resource 056 * @param idTranslator the id translator 057 * @throws RepositoryException if repository exception occurred 058 */ 059 060 public PropertiesRdfContext(final FedoraResource resource, 061 final IdentifierConverter<Resource, FedoraResource> idTranslator) 062 throws RepositoryException { 063 super(resource, idTranslator); 064 property2triple = new PropertyToTriple(session(), translator()); 065 concat(triplesFromProperties(resource())); 066 } 067 068 private Iterator<Triple> triplesFromProperties(final FedoraResource n) 069 throws RepositoryException { 070 LOGGER.trace("Creating triples for node: {}", n); 071 final Iterator<Property> nodeProps = n.getNode().getProperties(); 072 final Iterator<Property> properties = Iterators.filter(nodeProps, 073 isInternalProperty.negate().and(IS_NOT_UUID)::test); 074 return flatMap(properties, property2triple); 075 } 076}