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.data;
023    
024    import javax.persistence.EntityTransaction;
025    
026    
027    /**
028     * Responsible for attaching a entity with the entity mangager
029     * @author cingram
030     *
031     */
032    public class JPATransactionManager extends JPALocalTransactionManager {
033            
034            private JTATransactionManager jtaTm = new JTATransactionManager();
035            
036            
037            @Override
038            public Object begin(TideTransactionPersistenceManager pm) {
039                    Object tx = null;
040                    try {
041                            tx = super.begin(pm);
042                    }
043                    catch (IllegalStateException e) {
044                            tx = jtaTm.begin(pm);                   
045                    }
046                    return tx;
047            }
048            
049            @Override
050            public void commit(Object tx) throws Exception {
051                    if (tx instanceof EntityTransaction)
052                            super.commit(tx);
053                    else
054                            jtaTm.commit(tx);
055            }
056            
057            @Override
058            public void rollback(Object tx) {
059                    if (tx instanceof EntityTransaction)
060                            super.rollback(tx);
061                    else
062                            jtaTm.rollback(tx);
063            }
064    }