RE: [Springframework-developer] Spring MDB / Message Driven POJOs

[Mark P. <Mar...@co...>]

Hi,

Great job! Going to try it out asap...

- Mark


> -----Original Message-----
> From: spr...@li...=20
> [mailto:spr...@li...]
>  On Behalf Of jas...@ma...
> Sent: Wednesday, October 27, 2004 5:23 AM
> To: spr...@li...
> Subject: [Springframework-developer] Spring MDB / Message Driven POJOs
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> This has been an ongoing area of research for some time - how=20
> best to =20
> do JMS consumption from inside Spring. After scratching my=20
> head for a =20
> while over the best way to do this; I figured, JCA is the=20
> answer, since =20
> it takes care of all the thorny issues behind doing proper consumer =20
> based JMS pooling and transaction handling, which is way more=20
> complex =20
> than you might imagine. The only downside of this approach is that =20
> folks often think JCA is really complex & fat & depends on a J2EE =20
> container which is not true.
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> As part of the ActiveMQ project we've written a small, Spring=20
> based & =20
> easily embedded JCA container. Its just a few classes and is easy to =20
> use on any project, just depending on Spring and the JCA APIs.
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> http://activemq.codehaus.org/JCA+Container
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> So we can now have all the features of MDB such as efficient JMS =20
> pooling, hooks to work with all the major JMS providers via=20
> their JCA =20
> Resource Adapters (*), proper transaction handling and pooling of =20
> message listeners - but all from within Spring. We get the added =20
> benefit that we get to use Spring's Dependency Injection to=20
> configure =20
> the message listeners properly - plus we can easily perform=20
> the dynamic =20
> creation of new subscriptions easily at runtime, rather than=20
> having to =20
> rely on a fixed & rigid XML deployment configuration like EJB.
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> So now we've 'message driven pojos' in Spring! :)
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> To give you an idea of how simple it is, here's a sample...
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> http://cvs.activemq.codehaus.org/viewrep/activemq/activemq/modules/=20
> container/src/test/org/codehaus/activemq/jca/spring.xml?r=3DHEAD
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> There's more detailed documentation on the above page if you need it.
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> (*) to help work with other JMS providers which don't yet=20
> provide a JCA =20
> ResourceAdapter, which they really should if they want to integrate =20
> well with other J2EE containers, we could enhance ActiveMQ's =20
> ResourceAdapter to work with foreign JMS providers.
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> James
> -------
> http://radio.weblogs.com/0112098/
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