/**
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
* statements and notices. Redistributions must also contain a
* copy of this document.
*
* 2. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. The name "Exolab" must not be used to endorse or promote
* products derived from this Software without prior written
* permission of Exoffice Technologies. For written permission,
* please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
* nor may "Exolab" appear in their names without prior written
* permission of Exoffice Technologies. Exolab is a registered
* trademark of Exoffice Technologies.
*
* 5. Due credit should be given to the Exolab Project
* (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2003-2005 (C) Exoffice Technologies Inc. All Rights Reserved.
*/
package org.exolab.jms.persistence;
import java.sql.Connection;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.apache.commons.dbcp.BasicDataSource;
/**
* Wrapper around the DBCP connection manager.
*
* @version $Revision: 1.2 $ $Date: 2005/12/01 13:50:17 $
* @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
*/
public class DBCPConnectionManager extends AbstractConnectionManager {
/**
* The data source.
*/
private DataSource _dataSource;
/**
* Default constructor.
*/
public DBCPConnectionManager() {
}
/**
* Initialise the connection manager. This must be called before a call to
* {@link #getConnection} is made and after all the properties have been
* set.
*/
public void init() throws PersistenceException {
long evictionIntervalMS = getEvictionInterval() * 1000;
long minIdleTimeMS = getMinIdleTime() * 1000;
String testQuery = getTestQuery();
boolean testWhileIdle = false;
if (testQuery != null) {
testWhileIdle = true;
}
BasicDataSource dataSource = new BasicDataSource();
dataSource.setUsername(getUser());
dataSource.setPassword(getPassword());
dataSource.setDriverClassName(getDriver());
dataSource.setUrl(getURL());
dataSource.setDefaultAutoCommit(false);
dataSource.setPoolPreparedStatements(true);
// configure pooling
dataSource.setMaxActive(getMaxActive());
dataSource.setMaxIdle(getMaxIdle());
dataSource.setMaxWait(60 * 1000);
// force the pool to timeout to avoid deadlocks
dataSource.setValidationQuery(testQuery);
dataSource.setTestOnBorrow(getTestBeforeUse());
dataSource.setTimeBetweenEvictionRunsMillis(evictionIntervalMS);
dataSource.setMinEvictableIdleTimeMillis(minIdleTimeMS);
dataSource.setTestWhileIdle(testWhileIdle);
_dataSource = dataSource;
}
/**
* Retrieve a connection to the underlying database from the pool of
* connections.
*
* @return a connection to the database
* @throws PersistenceException if a connection cannot be retrieved
*/
public Connection getConnection() throws PersistenceException {
Connection connection;
try {
connection = _dataSource.getConnection();
} catch (SQLException exception) {
throw new PersistenceException("Failed to get pooled connection",
exception);
}
return connection;
}
}