1 /*** 2 * 3 * Copyright 2004 Protique Ltd 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 **/ 18 package org.codehaus.activemq.util; 19 20 import org.codehaus.activemq.store.PersistenceAdapter; 21 22 import javax.jms.JMSException; 23 24 /*** 25 * A helper class for running code with a PersistenceAdapter 26 * in a transaction. 27 * 28 * @version $Revision: 1.2 $ 29 */ 30 public class TransactionTemplate { 31 private PersistenceAdapter persistenceAdapter; 32 33 public TransactionTemplate(PersistenceAdapter persistenceAdapter) { 34 this.persistenceAdapter = persistenceAdapter; 35 } 36 37 public void run(Callback task) throws JMSException { 38 persistenceAdapter.beginTransaction(); 39 Throwable throwable = null; 40 try { 41 task.execute(); 42 } 43 catch (Throwable t) { 44 throwable = t; 45 } 46 if (throwable == null) { 47 persistenceAdapter.commitTransaction(); 48 } 49 else { 50 persistenceAdapter.rollbackTransaction(); 51 } 52 } 53 }