/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.example.jms.topic;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.Topic;
import javax.naming.InitialContext;
import org.jboss.example.jms.common.ExampleSupport;
/**
* The example creates a connection to the default provider and uses the connection to send a
* message to the topic "queue/testTopic". The message must be received by a topic subscriber.
*
* Since this example is also used by the smoke test, it is essential that the VM exits with exit
* code 0 in case of successful execution and a non-zero value on failure.
*
* @author <a href="mailto:ovidiu@jboss.org">Ovidiu Feodorov</a>
* @author <a href="mailto:luc.texier@jboss.org">Luc Texier</a>
* @author <a href="mailto:tim.fox@jboss.com">Tim Fox</a>
* @version <tt>$Revision: 1843 $</tt>
*
* $Id: TopicExample.java 1843 2006-12-21 23:41:19Z timfox $
*/
public class TopicExample extends ExampleSupport
{
public void example() throws Exception
{
String destinationName = getDestinationJNDIName();
InitialContext ic = null;
Connection connection = null;
try
{
ic = new InitialContext();
ConnectionFactory cf = (ConnectionFactory)ic.lookup("/ConnectionFactory");
Topic topic = (Topic)ic.lookup(destinationName);
log("Topic " + destinationName + " exists");
connection = cf.createConnection();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageProducer publisher = session.createProducer(topic);
MessageConsumer subscriber = session.createConsumer(topic);
ExampleListener messageListener = new ExampleListener();
subscriber.setMessageListener(messageListener);
connection.start();
TextMessage message = session.createTextMessage("Hello!");
publisher.send(message);
log("The message was successfully published on the topic");
messageListener.waitForMessage();
message = (TextMessage)messageListener.getMessage();
log("Received message: " + message.getText());
assertEquals("Hello!", message.getText());
displayProviderInfo(connection.getMetaData());
}
finally
{
if (ic != null)
{
try
{
ic.close();
}
catch(Exception e)
{
throw e;
}
}
// ALWAYS close your connection in a finally block to avoid leaks.
// Closing connection also takes care of closing its related objects e.g. sessions.
closeConnection(connection);
}
}
private void closeConnection(Connection con) throws JMSException
{
try
{
if (con != null)
{
con.close();
}
}
catch(JMSException jmse)
{
log("Could not close connection " + con +" exception was " + jmse);
}
}
protected boolean isQueueExample()
{
return false;
}
public static void main(String[] args)
{
new TopicExample().run();
}
}