April 2003
Intermediate to advanced
750 pages
16h 53m
English
book
EJB 2.0 Development with WebSphere Studio Application Developer
by Ueli Wahli, Wouter Denayer, Lars Schunk, Deborah Shaddon, Martin Weiss
Content preview from EJB 2.0 Development with WebSphere Studio Application Developer
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MDB client programming
There is no MDB client programming, per se, as clients may not interact directly with the MDB. However, the MDB client is really just a JMS message producer whose ultimate destination is the MDB. We have already seen an example of a simple JMS message producer (sender) in the JMS concepts section.
An MDB client that operates in a pseudo-synchronous request/reply mode, however, must also implement QueueReceiver logic in order to receive the reply, and also some message selection to ensure that the appropriate reply is being received. MDBs are designed to execute in a multi-threaded manner; therefore, multiple reply messages can be produced at the same time. There is nothing to guarantee the affinity or order of reply messages ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.