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     */
022    package org.granite.tide.hibernate;
023    
024    import java.util.Map;
025    
026    import org.granite.hibernate.HibernateOptimisticLockException;
027    import org.granite.tide.data.ChangeSet;
028    import org.granite.tide.data.ChangeSetApplier;
029    import org.granite.tide.data.ChangeSetProxy;
030    import org.hibernate.HibernateException;
031    import org.hibernate.StaleObjectStateException;
032    import org.hibernate.event.MergeEvent;
033    import org.hibernate.event.def.DefaultMergeEventListener;
034    
035    
036    public class HibernateDataChangeMergeListener extends DefaultMergeEventListener {
037    
038            private static final long serialVersionUID = 1L;
039    
040            @Override
041            public void onMerge(MergeEvent event) throws HibernateException {
042                    try {
043                            super.onMerge(event);
044                    }
045                    catch (StaleObjectStateException e) {
046                            HibernateOptimisticLockException.rethrowOptimisticLockException(event.getSession(), e);
047                    }
048            }
049    
050            @SuppressWarnings("rawtypes")
051            @Override
052            public void onMerge(MergeEvent event, Map copiedAlready) throws HibernateException {
053                    if (event.getOriginal() instanceof ChangeSetProxy || event.getOriginal() instanceof ChangeSet) {
054                            ChangeSet changeSet = event.getOriginal() instanceof ChangeSet ? (ChangeSet)event.getOriginal() : ((ChangeSetProxy)event.getOriginal()).getChangeSetProxyData();
055                            Object result = new ChangeSetApplier(new HibernatePersistenceAdapter(event.getSession())).applyChanges(changeSet)[0];
056                            event.setResult(result);
057                            return;
058                    }
059                    
060                    try {
061                            super.onMerge(event, copiedAlready);
062                    }
063                    catch (StaleObjectStateException e) {
064                            HibernateOptimisticLockException.rethrowOptimisticLockException(event.getSession(), e);
065                    }
066            }
067    }