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.mappings; 017 018import com.hp.hpl.jena.graph.Node; 019import com.hp.hpl.jena.graph.Triple; 020import org.slf4j.Logger; 021 022import java.util.stream.Stream; 023 024import javax.jcr.RepositoryException; 025import javax.jcr.nodetype.NodeDefinition; 026import javax.jcr.nodetype.NodeType; 027 028import static java.util.stream.Stream.concat; 029import static java.util.stream.Stream.of; 030import static com.google.common.base.Throwables.propagate; 031import static com.hp.hpl.jena.graph.Triple.create; 032import static com.hp.hpl.jena.vocabulary.RDFS.range; 033import static org.slf4j.LoggerFactory.getLogger; 034 035/** 036 * Utility for moving Node Definitions into RDFS triples 037 * @author cbeer 038 */ 039public class NodeDefinitionToTriples extends ItemDefinitionToTriples<NodeDefinition> { 040 041 private static final Logger LOGGER = getLogger(NodeDefinitionToTriples.class); 042 043 /** 044 * Translate ItemDefinitions into triples. The definitions will hang off 045 * the provided RDF Node 046 * @param domain the domain 047 */ 048 public NodeDefinitionToTriples(final Node domain) { 049 super(domain); 050 } 051 052 @Override 053 public Stream<Triple> apply(final NodeDefinition input) { 054 055 try { 056 057 final Node propertyDefinitionNode = getResource(input).asNode(); 058 059 final NodeType[] requiredPrimaryTypes = input.getRequiredPrimaryTypes(); 060 061 if (requiredPrimaryTypes.length > 1) { 062 // TODO we can express this as an OWL unionOf. But should we? 063 LOGGER.trace( 064 "Skipping RDFS:range for {} with multiple primary types", 065 propertyDefinitionNode.getName()); 066 } else if (requiredPrimaryTypes.length == 1) { 067 LOGGER.trace("Adding RDFS:range for {} with primary types {}", 068 input.getName(), 069 requiredPrimaryTypes[0].getName()); 070 return concat( 071 of(create(propertyDefinitionNode, range.asNode(), 072 getResource(requiredPrimaryTypes[0]).asNode())), 073 super.apply(input)); 074 } else { 075 LOGGER.trace("Skipping RDFS:range for {} with no required primary types"); 076 } 077 return super.apply(input); 078 079 } catch (final RepositoryException e) { 080 throw propagate(e); 081 } 082 083 } 084}