/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.test.integration.ejb.mdb;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import javax.annotation.Resource;
import javax.ejb.EJB;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.sql.DataSource;
import org.jboss.logging.Logger;
/**
* User: jpai
*/
public class DDBasedMDB implements MessageListener {
@EJB
private JMSMessagingUtil jmsMessagingUtil;
@EJB
private BMTSLSB bmtslsb;
@Resource(lookup = "java:jboss/datasources/ExampleDS")
private DataSource dataSource;
private static final Logger logger = Logger.getLogger(DDBasedMDB.class);
static {
// @see https://issues.jboss.org/browse/WFLY-3989
// do an activity that depends on TCCL being the right one (== the application classloader)
final String className = DDBasedMDB.class.getName();
try {
loadClassThroughTCCL(className);
} catch (ClassNotFoundException e) {
throw new RuntimeException("Could not load " + className + " through TCCL " + Thread.currentThread().getContextClassLoader() + " in the static block of MDB");
}
}
public DDBasedMDB() {
// @see https://issues.jboss.org/browse/WFLY-3989
// do an activity that depends on TCCL being the right one (== the application classloader)
final String className = this.getClass().getName();
try {
loadClassThroughTCCL(className);
} catch (ClassNotFoundException e) {
throw new RuntimeException("Could not load " + className + " through TCCL " + Thread.currentThread().getContextClassLoader() + " in the constructor of MDB");
}
}
@Override
public void onMessage(Message message) {
logger.trace("Received message " + message + " in MDB " + this.getClass().getName());
Connection conn = null;
try {
final Destination replyTo = message.getJMSReplyTo();
if (replyTo == null) {
return;
}
logger.trace("Doing a DB operation using a DataSource");
try {
conn = dataSource.getConnection();
final PreparedStatement preparedStatement = conn.prepareStatement("select upper('foo')");
preparedStatement.execute();
} catch (SQLException e) {
throw new RuntimeException(e);
}
logger.trace("Done invoking DB operation. Holding on to connection till this method completes");
logger.trace("Invoking a BMT SLSB which will use UserTransaction");
bmtslsb.doSomethingWithUserTransaction();
logger.trace("Sending a reply to destination " + replyTo);
jmsMessagingUtil.reply(message);
} catch (JMSException e) {
throw new RuntimeException(e);
} finally {
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
}
}
private static void loadClassThroughTCCL(String className) throws ClassNotFoundException {
Thread.currentThread().getContextClassLoader().loadClass(className);
}
}