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    
021    package org.granite.tide.spring;
022    
023    import org.granite.tide.TideTransactionManager;
024    import org.granite.tide.data.TideTransactionPersistenceManager;
025    import org.springframework.transaction.PlatformTransactionManager;
026    import org.springframework.transaction.TransactionDefinition;
027    import org.springframework.transaction.TransactionStatus;
028    import org.springframework.transaction.support.DefaultTransactionDefinition;
029    
030    /**
031     * Responsible for attaching a session with the persistence mangager
032     * @author cingram
033     *
034     */
035    public class SpringTransactionManager implements TideTransactionManager {
036            
037            private PlatformTransactionManager transactionManager;
038            
039            private static final TransactionDefinition TX_DEF = new DefaultTransactionDefinition(TransactionDefinition.PROPAGATION_REQUIRED);
040            static {
041                    ((DefaultTransactionDefinition)TX_DEF).setReadOnly(true);
042            }
043            
044            
045            public SpringTransactionManager(PlatformTransactionManager transactionManager) {
046                    this.transactionManager = transactionManager;
047            }
048            
049            public Object begin(TideTransactionPersistenceManager pm) {
050                    return transactionManager.getTransaction(TX_DEF);
051            }
052    
053            public void commit(Object tx) throws Exception {
054                    transactionManager.commit(((TransactionStatus)tx));
055            }
056    
057            public void rollback(Object tx) {
058                    transactionManager.rollback(((TransactionStatus)tx));
059            }
060    }