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1 /*** 2 * Redistribution and use of this software and associated documentation 3 * ("Software"), with or without modification, are permitted provided 4 * that the following conditions are met: 5 * 6 * 1. Redistributions of source code must retain copyright 7 * statements and notices. Redistributions must also contain a 8 * copy of this document. 9 * 10 * 2. Redistributions in binary form must reproduce the 11 * above copyright notice, this list of conditions and the 12 * following disclaimer in the documentation and/or other 13 * materials provided with the distribution. 14 * 15 * 3. The name "Exolab" must not be used to endorse or promote 16 * products derived from this Software without prior written 17 * permission of Exoffice Technologies. For written permission, 18 * please contact info@exolab.org. 19 * 20 * 4. Products derived from this Software may not be called "Exolab" 21 * nor may "Exolab" appear in their names without prior written 22 * permission of Exoffice Technologies. Exolab is a registered 23 * trademark of Exoffice Technologies. 24 * 25 * 5. Due credit should be given to the Exolab Project 26 * (http://www.exolab.org/). 27 * 28 * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT 30 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 31 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 32 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 33 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 34 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 35 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 39 * OF THE POSSIBILITY OF SUCH DAMAGE. 40 * 41 * Copyright 1999 (C) Exoffice Technologies Inc. All Rights Reserved. 42 * 43 * $Id: NullTransactionManager.java,v 1.2 2003/08/07 13:33:12 tanderson Exp $ 44 * 45 * Date Author Changes 46 * 07/02/2001 jima Created 47 */ 48 package org.exolab.jms.transaction; 49 50 import javax.transaction.Synchronization; 51 import javax.transaction.Transaction; 52 import javax.transaction.TransactionManager; 53 import javax.transaction.xa.XAResource; 54 55 56 /*** 57 * This class instantiates the NullTransactionManager, which is used in place 58 * of a real transaction manager. In particular it is used for the JDBM database 59 * <p> 60 * This is really an interim solution to support JDBM, with most of the methods 61 * having an empty body. 62 * 63 * @version $Revision: 1.2 $ $Date: 2003/08/07 13:33:12 $ 64 * @author <a href="mailto:jima@exoffice.com">Jim Alateras</a> 65 **/ 66 public class NullTransactionManager implements TransactionManager { 67 68 // implementation of TransactionManager.begin 69 public void begin() { 70 // null operation 71 } 72 73 // implementation of TransactionManager.commit 74 public void commit() { 75 // null operation 76 } 77 78 // implementation of TransactionManager.rollback 79 public void rollback() { 80 // null operation 81 } 82 83 // implementation of TransactionManager.getStatus 84 public int getStatus() { 85 return 0; 86 } 87 88 // implementation of TransactionManager.getTransaction 89 public Transaction getTransaction() { 90 return new NullTransaction(); 91 } 92 93 // implementation of TransactionManager.resume 94 public void resume(Transaction transaction) { 95 // null operation 96 } 97 98 // implementation of TransactionManager.setRollbackOnly 99 public void setRollbackOnly() { 100 // null operation 101 } 102 103 // implementation of TransactionManager.setTransactionTimeout 104 public void setTransactionTimeout(int timeout) { 105 // null implementation 106 } 107 108 // implementation of TransactionManager.suspend 109 public Transaction suspend() { 110 return new NullTransaction(); 111 } 112 } 113 114 115 /*** 116 * The NullTransaction is part of the NullTransactionManager support 117 * with most methods implemented with empty bodies 118 */ 119 class NullTransaction implements javax.transaction.Transaction { 120 121 // implementation Transaction.commit 122 public void commit() { 123 // null implementation 124 } 125 126 // implementation Transaction.delistResource 127 public boolean delistResource(XAResource a, int b) { 128 return false; 129 } 130 131 // implementation Transaction.rollback 132 public void rollback() { 133 // null implementation 134 } 135 136 // implementation Transaction.enlistResource 137 public boolean enlistResource(XAResource a) { 138 return false; 139 } 140 141 // implementation Transaction.getStatus 142 public int getStatus() { 143 return 0; 144 } 145 146 // implementation Transaction.registerSynchronization 147 public void registerSynchronization(Synchronization a) { 148 // null implementation 149 } 150 151 // implementation Transaction.setRollbackOnly 152 public void setRollbackOnly() { 153 // null implementation 154 } 155 }

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