001/* 002 * (C) Copyright 2006-2009 Nuxeo SA (http://nuxeo.com/) and others. 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 * 016 * Contributors: 017 * Nuxeo - initial API and implementation 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.ecm.platform.comment.listener; 023 024import java.util.List; 025 026import org.apache.commons.logging.Log; 027import org.apache.commons.logging.LogFactory; 028import org.nuxeo.ecm.core.api.CoreSession; 029import org.nuxeo.ecm.core.api.DocumentModel; 030import org.nuxeo.ecm.core.event.EventListener; 031import org.nuxeo.ecm.platform.comment.service.CommentServiceConfig; 032import org.nuxeo.ecm.platform.comment.workflow.utils.CommentsConstants; 033import org.nuxeo.ecm.platform.relations.api.Graph; 034import org.nuxeo.ecm.platform.relations.api.RelationManager; 035import org.nuxeo.ecm.platform.relations.api.Resource; 036import org.nuxeo.ecm.platform.relations.api.Statement; 037 038public class CommentRemovedEventListener extends AbstractCommentListener implements EventListener { 039 040 private static final Log log = LogFactory.getLog(CommentRemovedEventListener.class); 041 042 @Override 043 protected void doProcess(CoreSession coreSession, RelationManager relationManager, CommentServiceConfig config, 044 DocumentModel docMessage) { 045 log.debug("Processing relations cleanup on Comment removal"); 046 String typeName = docMessage.getType(); 047 if (CommentsConstants.COMMENT_DOC_TYPE.equals(typeName) || "Post".equals(typeName)) { 048 onCommentRemoved(relationManager, config, docMessage); 049 } 050 } 051 052 private static void onCommentRemoved(RelationManager relationManager, CommentServiceConfig config, 053 DocumentModel docModel) { 054 Resource commentRes = relationManager.getResource(config.commentNamespace, docModel, null); 055 if (commentRes == null) { 056 log.warn("Could not adapt document model to relation resource; " 057 + "check the service relation adapters configuration"); 058 return; 059 } 060 Graph graph = relationManager.getGraph(config.graphName, docModel.getCoreSession()); 061 List<Statement> statementList = graph.getStatements(commentRes, null, null); 062 graph.remove(statementList); 063 } 064 065}