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; 019 020import static org.fcrepo.kernel.modeshape.utils.FedoraTypesUtils.isNonRdfSourceDescription; 021import static org.modeshape.jcr.api.JcrConstants.JCR_CONTENT; 022import static org.slf4j.LoggerFactory.getLogger; 023 024import javax.jcr.Node; 025import javax.jcr.RepositoryException; 026 027import org.fcrepo.kernel.api.exception.RepositoryRuntimeException; 028import org.fcrepo.kernel.api.models.FedoraResource; 029import org.fcrepo.kernel.api.models.NonRdfSourceDescription; 030import org.slf4j.Logger; 031 032/** 033 * Abstraction for a Fedora datastream backed by a JCR node. 034 * 035 * @author ajs6f 036 * @since Feb 21, 2013 037 */ 038public class NonRdfSourceDescriptionImpl extends FedoraResourceImpl implements NonRdfSourceDescription { 039 040 private static final Logger LOGGER = getLogger(NonRdfSourceDescriptionImpl.class); 041 042 /** 043 * The JCR node for this datastream 044 * 045 * @param n an existing {@link Node} 046 */ 047 public NonRdfSourceDescriptionImpl(final Node n) { 048 super(n); 049 } 050 051 @Override 052 public FedoraResource getDescribedResource() { 053 return new FedoraBinaryImpl(getContentNode()); 054 } 055 056 private Node getContentNode() { 057 LOGGER.trace("Retrieved datastream content node."); 058 try { 059 return node.getNode(JCR_CONTENT); 060 } catch (final RepositoryException e) { 061 throw new RepositoryRuntimeException(e); 062 } 063 } 064 065 /** 066 * Check if the node has a fedora:datastream mixin 067 * 068 * @param node node to check 069 * @return whether the node has a fedora:datastream mixin 070 */ 071 public static boolean hasMixin(final Node node) { 072 return isNonRdfSourceDescription.test(node); 073 } 074 075}