How to configure my MDB serve only one message at a time?

Question

Hi All,
I have requirement where I need to develope a MDB iin weblogic. This MDB has to serve only one message at a time. If the send second message is sent while the first one is running the second message has to sit in queue and start processing once the first message is finished.
Is there any way to configure via annotations or in weblogic server settings ?
Any help would be really appreciated...
Thank you,
K.

Answer 1

Here is my client code to send the message
Connection connection = null;
javax.jms.Session session = null;
MessageProducer producer = null;
try
connection = lpConnectionFactory.createConnection();
session = connection.createSession(false, javax.jms.Session.AUTO_ACKNOWLEDGE);
// Create a MessageProducer from the Session to the Validation Queue
producer = session.createProducer(myQueue);
((WLMessageProducer)producer).setUnitOfOrder();
// Create a message
ObjectMessage message = session.createObjectMessage();
message.setObject(params);
message.setStringProperty(MyServiceConstants.OPERATION, operation);
// Send the message to the queue
producer.send(message);
finally
if (producer != null)
producer.close();
if (session != null)
session.close();
if (connection != null)
connection.close();
Following is the weblogic-ejb-jar.xml
<?xml version="1.0"?>
<!DOCTYPE weblogic-ejb-jar PUBLIC
"-//BEA Systems, Inc.//DTD WebLogic 6.0.0 EJB//EN"
"http://www.bea.com/servers/wls600/dtd/weblogic-ejb-jar.dtd">
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>TestMDB</ejb-name>
<message-driven-descriptor>
     <pool>
          <max-beans-in-free-pool>1</max-beans-in-free-pool>
          <initial-beans-in-free-pool>1</initial-beans-in-free-pool>
     </pool>
</message-driven-descriptor>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>