[jboss-user] [Beginner's Corner] - Singleton Timerbean cannot be installed

[Ulrich Kriegel]

Ulrich Kriegel [https://community.jboss.org/people/ukriegel] created the discussion

"Singleton Timerbean cannot be installed"

To view the discussion, visit: https://community.jboss.org/message/736664#736664

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Hi there,
I'm new here and hope thats the correct forum to ask. If not, please, give me a a link to the correct one.

I'm trying to install a simple timer bean in JBoss6.1.Final, which sould publish every 10 sec a Testmessage with content "foo" on a given Topic

package foo.baz;

import javax.annotation.Resource;
import javax.ejb.LocalBean;
import javax.ejb.Schedule;
import javax.ejb.Singleton;
import javax.ejb.Stateless;
import javax.ejb.Timeout;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.Topic;


import org.apache.log4j.Logger;


/**
 * Session Bean implementation class LifeEventTimer
 */
//@Singleton
@Stateless
@LocalBean




public class LifeEventTimer{
          private static Logger logger = Logger.getLogger(LifeEventTimer.class);



          @Resource(mappedName="/ConnectionFactory")
          private ConnectionFactory connectionFactory;

          @Resource(mappedName="topic/Output")
          private Topic topic; 
          private static String INTERNAL_LIFE_MESSAGE = "foo";
          private String USER_NAME="foo";
          private String PASSWD = "baz";

    /**
     * Default constructor. 
     */
    public LifeEventTimer() {
    }

          public void send(final String messageText, String userName, String passwd) {
                    try {
                              Connection connection = connectionFactory.createConnection(userName, passwd);
                              logger.trace("connection: "+connection);
                              Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
                              logger.trace("session: "+session);
                              MessageProducer publisher = session.createProducer(topic);
                              logger.trace("publisher: "+publisher);
                              final TextMessage message = session.createTextMessage(messageText);
                              logger.debug("textMessage: " + message.getText());
                              publisher.send(message);
                              connection.close();
                    } catch (JMSException e) {
                              logger.error("JMSException: ", e);
                    }
          }   


          @Timeout
          @Schedule(second = "*/10", minute = "*", hour = "*", persistent = false)
          public void timeout() {

                    send(INTERNAL_LIFE_MESSAGE,USER_NAME, PASSWD);

          }
}
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