001/* 002 * Licensed to DuraSpace under one or more contributor license agreements. 003 * See the NOTICE file distributed with this work for additional information 004 * regarding copyright ownership. 005 * 006 * DuraSpace licenses this file to you under the Apache License, 007 * Version 2.0 (the "License"); you may not use this file except in 008 * compliance with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.fcrepo.kernel.modeshape.rdf.impl.mappings; 019 020import com.hp.hpl.jena.graph.Node; 021import com.hp.hpl.jena.graph.Triple; 022import org.slf4j.Logger; 023 024import java.util.stream.Stream; 025 026import javax.jcr.RepositoryException; 027import javax.jcr.nodetype.NodeDefinition; 028import javax.jcr.nodetype.NodeType; 029 030import static java.util.stream.Stream.concat; 031import static java.util.stream.Stream.of; 032import static com.google.common.base.Throwables.propagate; 033import static com.hp.hpl.jena.graph.Triple.create; 034import static com.hp.hpl.jena.vocabulary.RDFS.range; 035import static org.slf4j.LoggerFactory.getLogger; 036 037/** 038 * Utility for moving Node Definitions into RDFS triples 039 * @author cbeer 040 */ 041public class NodeDefinitionToTriples extends ItemDefinitionToTriples<NodeDefinition> { 042 043 private static final Logger LOGGER = getLogger(NodeDefinitionToTriples.class); 044 045 /** 046 * Translate ItemDefinitions into triples. The definitions will hang off 047 * the provided RDF Node 048 * @param domain the domain 049 */ 050 public NodeDefinitionToTriples(final Node domain) { 051 super(domain); 052 } 053 054 @Override 055 public Stream<Triple> apply(final NodeDefinition input) { 056 057 try { 058 059 final Node propertyDefinitionNode = getResource(input).asNode(); 060 061 final NodeType[] requiredPrimaryTypes = input.getRequiredPrimaryTypes(); 062 063 if (requiredPrimaryTypes.length > 1) { 064 // TODO we can express this as an OWL unionOf. But should we? 065 LOGGER.trace( 066 "Skipping RDFS:range for {} with multiple primary types", 067 propertyDefinitionNode.getName()); 068 } else if (requiredPrimaryTypes.length == 1) { 069 LOGGER.trace("Adding RDFS:range for {} with primary types {}", 070 input.getName(), 071 requiredPrimaryTypes[0].getName()); 072 return concat( 073 of(create(propertyDefinitionNode, range.asNode(), 074 getResource(requiredPrimaryTypes[0]).asNode())), 075 super.apply(input)); 076 } else { 077 LOGGER.trace("Skipping RDFS:range for {} with no required primary types"); 078 } 079 return super.apply(input); 080 081 } catch (final RepositoryException e) { 082 throw propagate(e); 083 } 084 085 } 086}