001    /** 
002     * 
003     * Copyright 2004 Hiram Chirino
004     * 
005     * Licensed under the Apache License, Version 2.0 (the "License"); 
006     * you may not use this file except in compliance with the License. 
007     * You may obtain a copy of the License at 
008     * 
009     * http://www.apache.org/licenses/LICENSE-2.0
010     * 
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS, 
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
014     * See the License for the specific language governing permissions and 
015     * limitations under the License. 
016     * 
017     **/
018    package org.activemq.service.impl;
019    
020    import javax.jms.JMSException;
021    import javax.transaction.xa.XAException;
022    
023    import org.activemq.service.Transaction;
024    import org.activemq.service.TransactionTask;
025    import org.activemq.util.JMSExceptionHelper;
026    
027    /**
028     * Keeps track of all the actions the need to be done when
029     * a transaction does a commit or rollback.
030     *
031     * @version $Revision: 1.1.1.1 $
032     */
033    public class AutoCommitTransaction implements Transaction {
034    
035        static final public AutoCommitTransaction AUTO_COMMIT_TRANSACTION = new AutoCommitTransaction();
036        
037        private AutoCommitTransaction() {}
038        
039        public void addPostCommitTask(TransactionTask task) throws JMSException {
040            try {
041                task.execute();
042            } catch (Throwable e) {
043                if( e instanceof JMSException ) {
044                    throw (JMSException)e;
045                }
046                JMSExceptionHelper.newJMSException("Commit task failed: "+e,e);
047            }
048        }
049    
050        public void addPostRollbackTask(TransactionTask task) throws JMSException {
051            // Canot rollback an auto commit transaction.
052        }
053    
054        public void commit(boolean onePhase) throws XAException {
055            XAException xae = new XAException("Commit not implemented on Auto Commit Transactions.");
056            xae.errorCode = XAException.XAER_RMERR;
057            throw xae;
058        }
059    
060        public void rollback() throws XAException {
061            XAException xae = new XAException("Rollback not implemented on Auto Commit Transactions.");
062            xae.errorCode = XAException.XAER_RMERR;
063            throw xae;
064        }
065    
066        public int prepare() throws XAException {
067            XAException xae = new XAException("Prepare not implemented on Auto Commit Transactions.");
068            xae.errorCode = XAException.XAER_RMERR;
069            throw xae;
070        }
071    
072        public boolean isXaTransacted() {
073            return false;
074        }
075    
076        public Object getTransactionId() {
077            return null;
078        }
079    }