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MDB over JMS?

 
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I would like to understand what the benefits are to using MDBs over session beans with JMS. Anything in the way of performance, etc.?
TIA!
 
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MDB's are the only way to tie the asynchronous receipt of a message together transactionally with the processing of that message. There's no other way (in or out of MDBs) to do that in Java.
You're really comparing apples and oranges.
Kyle
 
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Have a look at 'Masterting EJB' book by Ed Roman. It has a chapter dedicated towards this issue.
 
Luigi Smith
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Ah yes, (lightbulb moment)...it's the <b>asynchronicity</b> of the MDB where the real power is at and the fact you can slap on CMT too. Session beans are adept for synchronous transactions.
 
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A common pattern (well, technique) is to combine MDBs and SLSBs. You use an MDB to accept messages and call a session bean to perform the work. This way if you change your method of message delivery you don't have to move so much code around.
 
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