001/* 002 * (C) Copyright 2006-2009 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * Nuxeo - initial API and implementation 016 * 017 * $Id$ 018 */ 019 020package org.nuxeo.ecm.platform.comment.listener; 021 022import java.util.List; 023 024import org.apache.commons.logging.Log; 025import org.apache.commons.logging.LogFactory; 026import org.nuxeo.ecm.core.api.CoreSession; 027import org.nuxeo.ecm.core.api.DocumentModel; 028import org.nuxeo.ecm.core.event.EventListener; 029import org.nuxeo.ecm.platform.comment.service.CommentServiceConfig; 030import org.nuxeo.ecm.platform.comment.workflow.utils.CommentsConstants; 031import org.nuxeo.ecm.platform.relations.api.Graph; 032import org.nuxeo.ecm.platform.relations.api.RelationManager; 033import org.nuxeo.ecm.platform.relations.api.Resource; 034import org.nuxeo.ecm.platform.relations.api.Statement; 035 036public class CommentRemovedEventListener extends AbstractCommentListener implements EventListener { 037 038 private static final Log log = LogFactory.getLog(CommentRemovedEventListener.class); 039 040 @Override 041 protected void doProcess(CoreSession coreSession, RelationManager relationManager, CommentServiceConfig config, 042 DocumentModel docMessage) { 043 log.debug("Processing relations cleanup on Comment removal"); 044 String typeName = docMessage.getType(); 045 if (CommentsConstants.COMMENT_DOC_TYPE.equals(typeName) || "Post".equals(typeName)) { 046 onCommentRemoved(relationManager, config, docMessage); 047 } 048 } 049 050 private static void onCommentRemoved(RelationManager relationManager, CommentServiceConfig config, 051 DocumentModel docModel) { 052 Resource commentRes = relationManager.getResource(config.commentNamespace, docModel, null); 053 if (commentRes == null) { 054 log.warn("Could not adapt document model to relation resource; " 055 + "check the service relation adapters configuration"); 056 return; 057 } 058 Graph graph = relationManager.getGraphByName(config.graphName); 059 List<Statement> statementList = graph.getStatements(commentRes, null, null); 060 graph.remove(statementList); 061 } 062 063}