[MDB] K&B, What technique is better ?

[Mikalai Zaikin]

Hi, K&B !
Since MDB does not have local/remote interfaces, what is better
technique:
1) To call MDB directly from client (for example, Java Servlet, possibly on separate server).
2) To call MDB from Enterprise Bean.
Java message is delivered over JMS provider, it looks like there is not
any difference, but maybe there are some other issues/tricks which should be considered. What is best best practice ?
[ October 31, 2003: Message edited by: Mikalai Zaikin ]

[Pradeep bhatt]

You cannot call a MDB directly beacuse it does not have a home/component interfaces. You can send a message to a JMS server so that a MDB can be invoked by the container.
Hope this helps,

[Mikalai Zaikin]

Well, when I say "call MDB" that ofcourse means "send message to MDB over JMS"
My question actually was : *is there any difference for client location*?

[Pradeep bhatt]

It does not make any difference whether you sent messages from a servlet or EJB.
You can replace the sender any time, that is the advantage of using messaging system.

[Sivasundaram Umapathy]

Client and MDB are highly decoupled.Thanks to JMS