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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