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 2003 (C) Exoffice Technologies Inc. All Rights Reserved.
42 */
43 package org.exolab.jms.persistence;
44
45 import java.sql.Connection;
46 import java.sql.SQLException;
47 import javax.sql.DataSource;
48
49 import org.apache.commons.dbcp.BasicDataSource;
50
51
52 /***
53 * Wrapper around the DBCP connection manager
54 *
55 * @version $Revision: 1.4 $ $Date: 2003/10/28 07:27:29 $
56 * @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
57 */
58 public class DBCPConnectionManager extends AbstractConnectionManager {
59
60 /***
61 * The data source
62 */
63 private DataSource _dataSource;
64
65 /***
66 * Default constructor
67 */
68 public DBCPConnectionManager() {
69 }
70
71 /***
72 * Initialise the connection manager. This must be called before a call to
73 * {@link #getConnection} is made and after all the properties have been
74 * set.
75 */
76 public void init() throws PersistenceException {
77 long evictionIntervalMS = getEvictionInterval() * 1000;
78 long minIdleTimeMS = getMinIdleTime() * 1000;
79
80 String testQuery = getTestQuery();
81 boolean testWhileIdle = false;
82 boolean testOnBorrow = false;
83
84 if (testQuery != null) {
85 testWhileIdle = true;
86 testOnBorrow = getTestBeforeUse();
87 }
88
89 BasicDataSource dataSource = new BasicDataSource();
90 dataSource.setUsername(getUser());
91 dataSource.setPassword(getPassword());
92 dataSource.setDriverClassName(getDriver());
93 dataSource.setUrl(getURL());
94 dataSource.setDefaultAutoCommit(false);
95 dataSource.setPoolPreparedStatements(true);
96
97
98 dataSource.setMaxActive(getMaxActive());
99 dataSource.setMaxIdle(getMaxIdle());
100 dataSource.setValidationQuery(testQuery);
101 dataSource.setTestOnBorrow(getTestBeforeUse());
102 dataSource.setTimeBetweenEvictionRunsMillis(evictionIntervalMS);
103 dataSource.setMinEvictableIdleTimeMillis(minIdleTimeMS);
104 dataSource.setTestWhileIdle(testWhileIdle);
105
106 _dataSource = dataSource;
107 }
108
109 /***
110 * Retrieve a connection to the underlying database from the pool of
111 * connections
112 *
113 * @return a connection to the database
114 * @throws PersistenceException if a connection cannot be retrieved
115 */
116 public Connection getConnection() throws PersistenceException {
117 Connection connection;
118 try {
119 connection = _dataSource.getConnection();
120 } catch (SQLException exception) {
121 throw new PersistenceException("Failed to get pooled connection",
122 exception);
123 }
124
125 return connection;
126 }
127
128 }