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1 /* ====================================================================
2 * License:
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * 3. The end-user documentation included with the redistribution,
17 * if any, must include the following acknowledgment:
18 * "This product includes software developed by
19 * Robert Half International (http://www.rhi.com/)."
20 * Alternately, this acknowledgment may appear in the software itself,
21 * if and wherever such third-party acknowledgments normally appear.
22 *
23 * 4. The names "Parc", "RHI", and "Robert Half International" must
24 * not be used to endorse or promote products derived from this
25 * software without prior written permission. For written
26 * permission, please contact pete.mckinstry@rhi.com.
27 *
28 * 5. Products derived from this software may not be called "PARC",
29 * nor may "PARC" appear in their name, without prior written
30 * permission of Robert Half International.
31 *
32 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
33 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
34 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
35 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
36 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
37 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
38 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
39 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
40 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
41 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
42 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 * SUCH DAMAGE.
44 * ====================================================================
45 *
46 */
47 package com.rhi.architecture.xa;
48
49 import com.rhi.architecture.config.ConfigurationException;
50 import com.rhi.architecture.db.DBUtil;
51
52 import java.sql.Connection;
53 import java.sql.SQLException;
54 import javax.sql.DataSource;
55
56 /***
57 * Interface for managing database transactions. This is not
58 * intended to be a distributed transaction class. It is just
59 * a useful interface to use in single DB transactions.
60 *
61 * @author Pete McKinstry
62 * @copyright 2002, Robert Half Int'l., Inc. All rights reserved.
63 *
64 * @since 1.0
65 */
66 public class DatabaseTransactionImpl implements DatabaseTransaction {
67
68 private Connection connection = null;
69
70 /***
71 * default constructor
72 *
73 * @since 1.0
74 */
75 public DatabaseTransactionImpl() {
76 // no op
77 }
78
79 /***
80 * Get the connection associated w/ this DatabaseTransaction
81 *
82 * @return Connection
83 *
84 * @since 1.0
85 */
86 public Connection getConnection() {
87 return this.connection;
88 }
89
90 /***
91 * Start a new transaction.
92 *
93 * @throws TransactionException
94 * @since 1.0
95 */
96 public void begin() throws TransactionException {
97 try {
98 DataSource ds = DBUtil.getDataSource();
99 this.connection = ds.getConnection();
100 connection.setAutoCommit(false);
101 }
102 catch (SQLException e) {
103 throw new TransactionException(
104 "Unable to start " + "new transaction. e = " + e);
105 }
106 catch (ConfigurationException e) {
107 throw new TransactionException(
108 "Unable to start " + "new transaction. e = " + e);
109 }
110 }
111
112 /***
113 * Commit the transaction represented by this object.
114 *
115 * @throws TransactionException
116 * @since 1.0
117 */
118 public void commit() throws TransactionException {
119 try {
120 connection.commit();
121 }
122 catch (SQLException e) {
123 throw new TransactionException(e.toString());
124 }
125 finally {
126 if (connection != null) {
127 try {
128 connection.close();
129 }
130 catch (SQLException e) {
131 // ignore
132 }
133 }
134 }
135 }
136
137 /***
138 * Rollback the transaction represented by this object.
139 *
140 * @throws TransactionException
141 * @since 1.0
142 */
143 public void rollback() throws TransactionException {
144 try {
145 connection.rollback();
146 }
147 catch (SQLException e) {
148 throw new TransactionException(e.toString());
149 }
150 finally {
151 if (connection != null) {
152 try {
153 connection.close();
154 }
155 catch (SQLException e) {
156 // ignore
157 }
158 }
159 }
160 }
161
162 }
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