MDB as a topic subscriber

Question

Hi,
I am a little confused as to how would i bind a MDB on a topic.
Usually any MDB implements Message Listener interface and hence we write the implementation for OnMessage method.
I have succesfully writen to make MDB listen to a queue, but i am confused about the same for topic. Usually for the topic, the client who is listening to the topic needs to implement startListener() ... now the startListener() has to be called/invoked by somebody.
In my case i want an MDB to start listening to a topic on another Server, how can i do this ?
I did quite alot of search on net but didnt come up with what i needed ?
Code snippets are very much appreciated, even a small tutorial ...
TIA
Meka Toka

Answer 1

Let me be more clear,
I implemented a Topic, where an application client is listening to a Topic, and the message is being published by an ejb on a server. In this scenario i wrote a message listener class on the client side, i had a start listener method, in which i would do the lookup, create topic connection and start the listener. And the start listener method had to be called/invoked, then only the client would listen to the topic.
If i wanted a MDB to listen to topic, do i need the startlistener method ??
if Yes, who invokes the method ?
if NO, does it mean the MDB is directly bound to the topic ?
Now MDB has an OnMessage() method, in which we write what to do after u get the message ? But my question is how to bind the topic in the first place ?
I know that we can do the settings in the ejb-jar.xml where in you would give the message destination and all. But what about the lookup ? It needs to know the ip address of the topic destination from where it needs to retirieve.
Can some body guide me if i am missing something ?
TIA
Meka Toka