March 2002
Intermediate to advanced
464 pages
8h 51m
English
book
Enterprise JavaBeans™ Component Architecture: Designing and Coding Enterprise Applications
by Gail Anderson, Paul Anderson
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8.5. ShipOrder Message-Driven Bean
Asynchronous messages are useful for instigating tasks that take a long time to complete. The sender doesn't have to wait for a message to be delivered or for a receiver to carry out the subsequent request. Furthermore, loose coupling between senders and receivers makes systems more flexible as requirements change.
In this section we'll show you a JMS client producer that uses PTP messaging to interact with our online Music Collection Order processing system. This client, OrderApp, sends a message to a ShipOrder message-driven bean (ShipOrderBean). Upon receipt, the message-driven bean invokes a business method (shipOrdersByDate()) in our CustomerSession EJB. Recall that this method ships all orders with an ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.