[seam-dev] Multiple WAR in EAR

[Pete Muir]

Hi Stuart,

Sounds like you have made a lot of progress, thanks!

I think it's best to integrate these into the 2.2 release as some of  
it is quite invasive... If you put any needed patches on the JIRA  
issues, we can apply...

Best,

On 24 Apr 2009, at 00:27, Stuart Douglas wrote:

> I have done some investigating into multiple war support in seam. When
> running a seam app with multiple wars you and up with two seam apps
> running side by side, with different application contexts and
> components. The Lifecycle and ServletLifecycle classes both maintain a
> static reference to the servlet context (abstracted as a map in
> LifeCycle). This means that only one of the seam apps will have their
> application context stored in these classes. This seam app will work
> fine. The seam app that is not referenced has the following problems:
>
> - Cannot load resource bundles due to use of the wrong  
> ServletContext in
> ServletLifecycle (or wrong bundles loaded).
>
> - Timers and async methods started in the second app will be run in  
> the
> app context of the first
>
> - The wrong identity component will be created by the IdentityFilter.
>
> - The resource servlet for the second app is run the app context of  
> the
> first, and will not work
>
> - Wicket integration for the second app will not work
>
> - Spring integration will not work in the second app
>
> - jbpm integration in the second app is broken.
>
> Some of these are easier to fix than others. The servlet and filter
> problems are easy to fix as they have direct access to the
> ServletContext and can simply pass it through to Lifecycle (abstracted
> as a map of course)
>
> The timer and async method issues are a bit harder. They will need to
> store a reference to the application scope that they are meant to be  
> run
> in, same with the jbpm integration.
>
> I do not know if it will be possible to get full spring support in  
> multi
> war apps, but I don't really know enough about spring to be able to  
> say
> one way or another.
>
> As far as I can tell these are the only major problems with multi war
> apps, if these are resolved it should work fine.
>
> Stuart
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--
Pete Muir
http://www.seamframework.org
http://in.relation.to/Bloggers/Pete