001/*
002  GRANITE DATA SERVICES
003  Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004
005  This file is part of Granite Data Services.
006
007  Granite Data Services is free software; you can redistribute it and/or modify
008  it under the terms of the GNU Library General Public License as published by
009  the Free Software Foundation; either version 2 of the License, or (at your
010  option) any later version.
011
012  Granite Data Services is distributed in the hope that it will be useful, but
013  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015  for more details.
016
017  You should have received a copy of the GNU Library General Public License
018  along with this library; if not, see <http://www.gnu.org/licenses/>.
019*/
020
021package org.granite.tide.data;
022
023import javax.persistence.EntityTransaction;
024
025
026/**
027 * Responsible for attaching a entity with the entity mangager
028 * @author cingram
029 *
030 */
031public class JPATransactionManager extends JPALocalTransactionManager {
032        
033        private JTATransactionManager jtaTm = new JTATransactionManager();
034        
035        
036        @Override
037        public Object begin(TideTransactionPersistenceManager pm) {
038                Object tx = null;
039                try {
040                        tx = super.begin(pm);
041                }
042                catch (IllegalStateException e) {
043                        tx = jtaTm.begin(pm);                   
044                }
045                return tx;
046        }
047        
048        @Override
049        public void commit(Object tx) throws Exception {
050                if (tx instanceof EntityTransaction)
051                        super.commit(tx);
052                else
053                        jtaTm.commit(tx);
054        }
055        
056        @Override
057        public void rollback(Object tx) {
058                if (tx instanceof EntityTransaction)
059                        super.rollback(tx);
060                else
061                        jtaTm.rollback(tx);
062        }
063}