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MQSeries.net Forum Index » IBM MQ Java / JMS » Can I use Message Driven Bean just to send messages

Can I use Message Driven Bean just to send messages

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kiran_tala

Posted: Wed Oct 20, 2004 7:40 am Post subject: Can I use Message Driven Bean just to send messages

Novice

Joined: 16 Jul 2004
Posts: 14

we are using MDB's to receive messages and process them and sending the reply back using setJMSReplyTo().

Now we have a case of just to send messages and we know that we can use EJB session beans.

The question is can I use an MDB just to send messages instead of listening to any queue or topic ?

Why I am posting this question is for consistency reasons if possible we would like to use MDB's for all the below cases.

(we are using the below first two cases)

1) receive messages and process them and send the reply back

2) receive messages and process them and update the database

(this is the one I need some help)
3) just to send messages from the business layer without listening to the incoming messages.

Please let me know.

kiran

jefflowrey

Posted: Wed Oct 20, 2004 9:09 am Post subject:

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981

An MDB is only created and invoked when a message appears on a queue.

Your question is similar to asking "Can I use a Session Bean to create a Session?"
_________________
I am *not* the model of the modern major general.

kiran_tala

Posted: Wed Oct 20, 2004 9:41 am Post subject: Can I use Message driven bean just to send messages

Novice

Joined: 16 Jul 2004
Posts: 14

Hello jefflowrey,

Thanks for the reply. But I am using MDB's to receive messages and I know MDB's only to receive messages.

But I have been asked by team lead whether we can use MDB's just to send messages instead of using a session bean to maintain constistency.
(this is the first project we are using MDB's).

The question is

1) can we do just sending messages with MDB without listening to any queue ? (I told my team lead that MDB's are not that purpose.just I want to double check with this forum since I am not sure whether we can MDB like that also).

2) if yes, is there any disadvantage of doing that like resources wise?

I really appreicate your reply.

kiran

bower5932

Posted: Wed Oct 20, 2004 10:20 am Post subject: Re: Can I use Message driven bean just to send messages

Jedi Knight

Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA

kiran_tala wrote:

But I am using MDB's to receive messages and I know MDB's only to receive messages.
....
1) can we do just sending messages with MDB without listening to any queue ?

Didn't you answer your own question? If an MDB gets started by receiving a message, how are you going to use one without listening to any queue?

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