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JMS broker

Lin Sun
Greenhorn

Joined: Mar 23, 2012
Posts: 16
When SuD sends JMS message to external/destination system, do you include a JMS broker (i.e. Apache ActiveMQ) in component diagram? If so, is it a component in SuD? Or is it considered to be an external component in between SuD and destination system (kind of like a Email Server)?

Reason to call for a JMS broker is to uncouple SuD and external/destination system. Routing logic can be configured in the JMS broker.

Otherwise, without it in place, I'd have to design SuD to include JMS endpoint for each destination.
Paul Balm
Ranch Hand

Joined: Dec 13, 2008
Posts: 63
I'm not sure I understand completely what you're saying, but I have not included the JMS Broker in the component diagram, I've included several queues. I would show the JMS configuration at that level: Queues and Topics.

As to your final remark, if I remember correctly, the external systems should appear in the component diagram. You don't have to detail their internals, because the fact that they're external means you don't know & don't care. But you do need to deal with their interface, so they must appear in your component diagram.

I should get paid by Cade and Sheil for recommending their book so much, but it's well worth the money:
http://www.amazon.com/Certified-Enterprise-Architect-Study-Guide/dp/0131482033/ref=sr_1_1?s=books&ie=UTF8&qid=1343337367&sr=1-1&keywords=cade+sheil

If you just don't have the money, there is also a presentation on the web that is informative, see this post:
http://www.coderanch.com/t/508367/java-Architect-SCEA/certification/Where-find-powerpoint-presentation-Humprey

Cheers-


SCJP 1.4 -- SCJD Java 2 -- OCM JEA 5
 
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subject: JMS broker