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 org.apache.commons.logging.Log;
023import org.apache.commons.logging.LogFactory;
024import org.nuxeo.ecm.core.api.CoreSession;
025import org.nuxeo.ecm.core.api.DocumentModel;
026import org.nuxeo.ecm.core.api.event.DocumentEventTypes;
027import org.nuxeo.ecm.core.event.Event;
028import org.nuxeo.ecm.core.event.EventBundle;
029import org.nuxeo.ecm.core.event.EventContext;
030import org.nuxeo.ecm.core.event.impl.DocumentEventContext;
031import org.nuxeo.ecm.platform.comment.service.CommentServiceConfig;
032import org.nuxeo.ecm.platform.comment.service.CommentServiceHelper;
033import org.nuxeo.ecm.platform.relations.api.RelationManager;
034import org.nuxeo.runtime.api.Framework;
035
036public abstract class AbstractCommentListener {
037
038    private static final Log log = LogFactory.getLog(AbstractCommentListener.class);
039
040    public void handleEvent(EventBundle events) {
041        if (events.containsEventName(DocumentEventTypes.DOCUMENT_REMOVED)) {
042            for (Event event : events) {
043                handleEvent(event);
044            }
045        }
046    }
047
048    public void handleEvent(Event event) {
049        if (DocumentEventTypes.DOCUMENT_REMOVED.equals(event.getName())) {
050            EventContext ctx = event.getContext();
051            if (ctx instanceof DocumentEventContext) {
052                DocumentEventContext docCtx = (DocumentEventContext) ctx;
053                DocumentModel doc = docCtx.getSourceDocument();
054                CoreSession coreSession = docCtx.getCoreSession();
055                CommentServiceConfig config = CommentServiceHelper.getCommentService().getConfig();
056                RelationManager relationManager = Framework.getService(RelationManager.class);
057                doProcess(coreSession, relationManager, config, doc);
058                return;
059            }
060        }
061    }
062
063    protected abstract void doProcess(CoreSession coreSession, RelationManager relationManager,
064            CommentServiceConfig config, DocumentModel docMessage);
065
066}