/**
* EasyBeans
* Copyright (C) 2006 Bull S.A.S.
* Contact: easybeans@ow2.org
*
* This library 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 any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* --------------------------------------------------------------------------
* $Id: ClientMessageDriven.java 5644 2010-10-19 12:40:11Z benoitf $
* --------------------------------------------------------------------------
*/
package org.ow2.easybeans.examples.messagedrivenbean;
import java.util.Hashtable;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
/**
* Client of the Message Driven Bean.
* @author Florent Benoit
*/
public final class ClientMessageDriven {
/**
* Queue connection factory (Available for clients).
*/
private static final String QUEUE_CONNECTION_FACTORY = "JQCF";
/**
* Queue name used by this example.
*/
private static final String SAMPLE_QUEUE = "SampleQueue";
/**
* Rollback Queue name used by this example.
*/
private static final String SAMPLE_QUEUE_CONTEXT = "SampleRollbackQueue";
/**
* Number of messages to send.
*/
private static final int NUMBER_MESSAGES = 5;
/**
* Default InitialContextFactory to use.
*/
private static final String DEFAULT_INITIAL_CONTEXT_FACTORY = "org.objectweb.carol.jndi.spi.MultiOrbInitialContextFactory";
/**
* Utility class.
*/
private ClientMessageDriven() {
}
/**
* Main method.
* @param args the arguments (not required)
* @throws Exception if exception is found.
*/
public static void main(final String[] args) throws Exception {
// Build Context
Context initialContext = getInitialContext();
// Get factory
QueueConnectionFactory queueConnectionFactory = (QueueConnectionFactory) initialContext
.lookup(QUEUE_CONNECTION_FACTORY);
// Lookup the Queue through its JNDI name
Queue queue = (Queue) initialContext.lookup(SAMPLE_QUEUE);
Queue queueContext = (Queue) initialContext.lookup(SAMPLE_QUEUE_CONTEXT);
// Create connection
QueueConnection queueConnection = queueConnectionFactory.createQueueConnection();
// Create session
QueueSession queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
// Create sender
QueueSender queueSender = queueSession.createSender(queue);
// Create sender for context MDB
QueueSender queueSenderContext = queueSession.createSender(queueContext);
// Send messages
TextMessage message = null;
for (int i = 0; i < NUMBER_MESSAGES; i++) {
message = queueSession.createTextMessage();
String text = "Message_" + i;
message.setText(text);
queueSender.send(message);
System.out.println("Message [" + message.getJMSMessageID() + ", text:" + text + "] sent");
}
message = queueSession.createTextMessage();
message.setText("Message that should be accepted after several attempts");
queueSenderContext.send(message);
// Close JMS objects
queueSender.close();
queueSenderContext.close();
queueSession.close();
queueConnection.close();
}
/**
* @return Returns the InitialContext.
* @throws NamingException If the Context cannot be created.
*/
private static Context getInitialContext() throws NamingException {
// if user don't use jclient/client container
// we can specify the InitialContextFactory to use
// But this is *not recommended*.
Hashtable<String, Object> env = new Hashtable<String, Object>();
env.put(Context.INITIAL_CONTEXT_FACTORY, getInitialContextFactory());
// Usually a simple new InitialContext() without any parameters is sufficent.
// return new InitialContext();
return new InitialContext(env);
}
/**
* Returns a configurable InitialContextFactory classname.<br/>
* Can be configured with the <code>easybeans.client.initial-context-factory</code> System property.
* @return Returns a configurable InitialContextFactory classname.
*/
private static String getInitialContextFactory() {
String prop = System.getProperty("easybeans.client.initial-context-factory");
// If not found, use the default
if (prop == null) {
prop = DEFAULT_INITIAL_CONTEXT_FACTORY;
}
return prop;
}
}