001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.tide.spring;
023
024import org.granite.tide.data.DataContext;
025import org.granite.tide.data.DataEnabled.PublishMode;
026import org.granite.tide.data.TideSynchronizationManager;
027import org.hibernate.Session;
028import org.hibernate.action.spi.BeforeTransactionCompletionProcess;
029import org.hibernate.engine.spi.SessionImplementor;
030import org.hibernate.internal.SessionImpl;
031import org.springframework.orm.hibernate4.SessionHolder;
032
033/**
034 * Responsible for registering a publishing queued process on the Hibernate 4 session
035 * @author william
036 */
037public class Hibernate4SynchronizationManager implements TideSynchronizationManager {
038        
039        public boolean registerSynchronization(Object resource, boolean shouldRemoveContextAtEnd) {
040                Session session = null;
041                if (resource instanceof Session)
042                        session = (Session)resource;
043                else if (resource instanceof SessionHolder)
044                        session = ((SessionHolder)resource).getSession();
045                else
046                        throw new IllegalArgumentException("Unknow resource for registering synchronization " + resource);
047                
048                ((SessionImpl)session).getActionQueue().registerProcess(new HibernateDataPublishingProcess(shouldRemoveContextAtEnd));
049                return true;
050        }
051        
052        private static class HibernateDataPublishingProcess implements BeforeTransactionCompletionProcess {
053                
054                private boolean removeContext;
055                
056                public HibernateDataPublishingProcess(boolean removeContext) {
057                        this.removeContext = removeContext;
058                }
059                
060                public void doBeforeTransactionCompletion(SessionImplementor session) {
061                        DataContext.publish(PublishMode.ON_COMMIT);
062                        if (removeContext)
063                                DataContext.remove();
064                }
065        }
066
067}