Re: [Springframework-developer] Spring/Geronimo

[Dmitriy K. <dko...@ru...>]

So Rod, James,

as I'm trying to understand, what would be the purpose (use case) of 
creating such a "deployment unit"? To be able to expose 
application-level beans via JMX or expose Spring components itself such 
as BeanFactory via JMX?

And also, what is the "lower-level" transaction management in Geronimo? 
Is it JTS?

Thanks,
Dmitriy.


Rod Johnson wrote:

>All
>
>I recently met up with James Strachan, to discuss Spring/Geronimo
>integration, among other things. Btw James has recently joined us as a
>Spring developer--he's a great addition to our team!
>
>Spring/Geronimo integration is an exciting prospect, and we should
>prioritize anything we need to do towards it.
>
>The Geronimo team plan to give Spring a deployment unit, supported in
>Geronimo like an EJB Jar file etc. James has been working on
>this. This involves (a) Spring having a deployment unit that Geronimo
>recognizes and gives its own class loader; (b) Geronimo trying to expose
>Spring beans via JMX.
>
>So we need to define a Spring deployment unit. This should presumably be a
>JAR that contains:
>- application classes
>- one or more XML files
>- manifest giving location and order of XML files
>- manifest classpath expressing dependencies as normal
>- ? some mechanism for indicating dependencies, such as DataSources. It
>would be good to be able to fail fast, rather than when the app tries to
>start up.
>
>James is happy to implement support in Geronimo for any definition format we
>choose. Let's start thinking! We can no doubt leverage such a deployment
>unit outside Geronimo also...
>
>Geronimo will ship the Spring binaries itself. And it uses CGLIB heavily and
>(I assume) Commons Logging/Log4j. So it would be nice to be able to drop in
>a Spring deployment unit and just have it start up.
>
>There may also be integration possibilities with transaction
>management--getting access to lower-level details of transaction management
>than is available via JTA. I've opened a discussion on this with Jeremy
>Boynes.
>
>Rgds
>Rod
>
>
>
>
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