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.FedoraBinary; 030import org.fcrepo.kernel.api.models.FedoraResource; 031import org.fcrepo.kernel.modeshape.rdf.impl.mappings.PropertyToTriple; 032 033import org.slf4j.Logger; 034 035import com.google.common.collect.Iterators; 036import com.google.common.collect.UnmodifiableIterator; 037import com.hp.hpl.jena.graph.Triple; 038import com.hp.hpl.jena.rdf.model.Resource; 039 040/** 041 * {@link NodeRdfContext} for RDF that derives from JCR properties on a Resource 042 * 043 * @author ajs6f 044 * @since Oct 10, 2013 045 */ 046public class PropertiesRdfContext extends NodeRdfContext { 047 048 private final PropertyToTriple property2triple; 049 050 private static final Logger LOGGER = getLogger(PropertiesRdfContext.class); 051 052 private static final Predicate<Property> IS_NOT_UUID = uncheck(p -> !p.getName().equals("jcr:uuid")); 053 054 /** 055 * Default constructor. 056 * 057 * @param resource the resource 058 * @param idTranslator the id translator 059 * @throws RepositoryException if repository exception occurred 060 */ 061 062 public PropertiesRdfContext(final FedoraResource resource, 063 final IdentifierConverter<Resource, FedoraResource> idTranslator) 064 throws RepositoryException { 065 super(resource, idTranslator); 066 property2triple = new PropertyToTriple(resource.getNode().getSession(), idTranslator); 067 concat(triplesFromProperties(resource())); 068 } 069 070 private Iterator<Triple> triplesFromProperties(final FedoraResource n) 071 throws RepositoryException { 072 LOGGER.trace("Creating triples for node: {}", n); 073 074 final Iterator<Property> allProperties; 075 if (n instanceof FedoraBinary) { 076 final FedoraResource description = ((FedoraBinary)n).getDescription(); 077 allProperties = Iterators.concat(n.getNode().getProperties(), description.getNode().getProperties()); 078 } else { 079 allProperties = n.getNode().getProperties(); 080 } 081 082 final UnmodifiableIterator<Property> properties = 083 Iterators.filter(allProperties, isInternalProperty.negate().and(IS_NOT_UUID)::test); 084 return Iterators.concat(Iterators.transform(properties, property2triple)); 085 086 } 087 088}