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.impl.rdf.impl; 017 018import com.google.common.base.Function; 019import com.google.common.collect.ImmutableList; 020import com.google.common.collect.ImmutableSet; 021import com.google.common.collect.Iterators; 022import com.hp.hpl.jena.graph.Triple; 023import com.hp.hpl.jena.rdf.model.Resource; 024import org.fcrepo.kernel.models.FedoraResource; 025import org.fcrepo.kernel.identifiers.IdentifierConverter; 026import org.slf4j.Logger; 027 028import javax.jcr.RepositoryException; 029import javax.jcr.nodetype.NodeType; 030import java.util.Iterator; 031import java.util.Set; 032 033import static com.google.common.base.Throwables.propagate; 034import static com.hp.hpl.jena.graph.NodeFactory.createURI; 035import static com.hp.hpl.jena.graph.Triple.create; 036import static com.hp.hpl.jena.vocabulary.RDF.type; 037import static org.fcrepo.kernel.impl.rdf.JcrRdfTools.getRDFNamespaceForJcrNamespace; 038import static org.slf4j.LoggerFactory.getLogger; 039 040/** 041 * @author cabeer 042 * @since 10/1/14 043 */ 044public class TypeRdfContext extends NodeRdfContext { 045 private static final Logger LOGGER = getLogger(TypeRdfContext.class); 046 047 /** 048 * Default constructor. 049 * 050 * @param resource the resource 051 * @param idTranslator the id translator 052 * @throws RepositoryException if repository exception occurred 053 */ 054 public TypeRdfContext(final FedoraResource resource, 055 final IdentifierConverter<Resource, FedoraResource> idTranslator) 056 throws RepositoryException { 057 super(resource, idTranslator); 058 059 //include rdf:type for primaryType, mixins, and their supertypes 060 concatRdfTypes(); 061 } 062 063 private void concatRdfTypes() throws RepositoryException { 064 final ImmutableList.Builder<NodeType> nodeTypesB = ImmutableList.<NodeType>builder(); 065 066 final NodeType primaryNodeType = resource().getNode().getPrimaryNodeType(); 067 068 if (primaryNodeType != null) { 069 nodeTypesB.add(primaryNodeType); 070 } 071 072 try { 073 final Set<NodeType> primarySupertypes = ImmutableSet.<NodeType>builder() 074 .add(primaryNodeType.getSupertypes()).build(); 075 nodeTypesB.addAll(primarySupertypes); 076 } catch (NullPointerException e) { 077 // ignore 078 } 079 080 final NodeType[] mixinNodeTypesArr = resource().getNode().getMixinNodeTypes(); 081 082 if (mixinNodeTypesArr != null) { 083 final Set<NodeType> mixinNodeTypes = ImmutableSet.<NodeType>builder().add(mixinNodeTypesArr).build(); 084 nodeTypesB.addAll(mixinNodeTypes); 085 086 final ImmutableSet.Builder<NodeType> mixinSupertypes = ImmutableSet.<NodeType>builder(); 087 for (final NodeType mixinNodeType : mixinNodeTypes) { 088 mixinSupertypes.addAll(ImmutableSet.<NodeType>builder().add(mixinNodeType.getSupertypes()).build()); 089 } 090 091 nodeTypesB.addAll(mixinSupertypes.build()); 092 } 093 094 final ImmutableList<NodeType> nodeTypes = nodeTypesB.build(); 095 final Iterator<NodeType> nodeTypesIt = nodeTypes.iterator(); 096 097 concat(Iterators.transform(nodeTypesIt, nodetype2triple())); 098 } 099 100 private Function<NodeType, Triple> nodetype2triple() { 101 return new Function<NodeType, Triple>() { 102 103 @Override 104 public Triple apply(final NodeType nodeType) { 105 try { 106 final String name = nodeType.getName(); 107 final String prefix = name.split(":")[0]; 108 final String typeName = name.split(":")[1]; 109 final String namespace = getJcrUri(prefix); 110 final com.hp.hpl.jena.graph.Node rdfType = 111 createURI(getRDFNamespaceForJcrNamespace(namespace) 112 + typeName); 113 LOGGER.trace("Translating mixin: {} w/ namespace: {} into resource: {}", name, namespace, rdfType); 114 return create(subject(), type.asNode(), rdfType); 115 } catch (final RepositoryException e) { 116 throw propagate(e); 117 } 118 } 119 120 }; 121 } 122 123 private String getJcrUri(final String prefix) throws RepositoryException { 124 return resource().getNode().getSession().getWorkspace().getNamespaceRegistry() 125 .getURI(prefix); 126 } 127 128}