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Re: Q: Deployment Dependency Management in Glassfish -- how?

From: daniel_k <mail_at_danielkastenholz.de>
Date: Sun, 8 Jun 2008 15:59:20 -0700 (PDT)

Sorry, what I really meant was of course:

Is there anything equivalent in Glassfish?

%-|


daniel_k wrote:
>
> Hi,
>
> Geronimo has a really nice way of handling dependencies at deployment
> time. Each artifact (EJB, Web App, ...) must provide its own version
> number at deployment time and can optionally declare dependencies on other
> artifacts (e.g. "activemq-1.0"). If it turns out at deployment time that
> the dependencies aren't fulfilled, the deployment is rejected.
>
> Is there anything equivalent in Geronimo?
>
> If not, I would probably use the following workaround:
> - declare dependencies via IoC / Dependency Injection on class level
> - declare a top-level interface, e.g. Interface_v1, and refer to it from
> dependant objects via IoC
> - when Interface_v1 needs an update, remove it entirely and introduce a
> new Interface_v2 (or probably let Interface_v2 inherit from Interface_v1)
> - redeploy everything
> - all modules that are now still reference Interface_v1 would either fail
> or use the new implementation transparently (depending on whether
> inheritance is used)
>
> Although this solution has its own kind of elegance (because version
> management is no longer a meta data issue and maintained directly in the
> code), can you tell me if there anything else?
>
> Thanks
>
> Daniel
>
>

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