Hot to programmatically deploy ejb module

[Henning Blohm <he...@gmail.com>]

Hi all,

  we are playing with the idea of integration Open EJB as an EJB feature
into our low-life-cycle-management-efforts platform z2 Environment
(www.z2-environment.eu). To do so, we would need to programmatically
deploy EJB modules. I search the documentation and Javadocs but failed
to find an entry point to deployment.

So, if there is, can anybody point me to documentation on how to deploy
programmatically on OpenEJB?

Preferrably we would like to deploy from classpath, i.e. without
actually creating a jar. In contrast to the embedded examples however,
the module's class loader is not the one of the OpenEJB implementation
(but delegating to it). And of course, we wouldn't want to start
one EJB server for every module, but rather deploy several modules
to one server.

Any pointer to snippets/samples/documentation pointers useful to Open
EJB embedders (beyond testing) would be very welcome.

Thanks a lot,
  Henning

Re: Hot to programmatically deploy ejb module

[Henning <he...@gmail.com>]

Hi David,

  thanks for that great pointer (I suppose there are more test cases
that could be interesting to look at). I would absolutely not mind
helping create a wrapper API. 

  It's hard to say what the bare minimum would be as there are so many
(useful) integration points with an EJB container. From a
deploy/undeploy perspective, it would be great to deploy by just passing
a class loader as the least common denominator. 

  Let me have a look and see how much I understand from the samples and
how far I can get.

Thanks,
  henning




The reason for using a custom class loader is that the actual classpath
is controlled by the environment. 


On Wed, 2010-06-23 at 15:12 -0700, David Blevins wrote:

> On Jun 21, 2010, at 3:45 AM, Henning Blohm wrote:
> 
> > Hi all,
> > 
> >  we are playing with the idea of integration Open EJB as an EJB feature
> > into our low-life-cycle-management-efforts platform z2 Environment
> > (www.z2-environment.eu). To do so, we would need to programmatically
> > deploy EJB modules. I search the documentation and Javadocs but failed
> > to find an entry point to deployment.
> > 
> > So, if there is, can anybody point me to documentation on how to deploy
> > programmatically on OpenEJB?
> > 
> > Preferrably we would like to deploy from classpath, i.e. without
> > actually creating a jar. In contrast to the embedded examples however,
> > the module's class loader is not the one of the OpenEJB implementation
> > (but delegating to it). And of course, we wouldn't want to start
> > one EJB server for every module, but rather deploy several modules
> > to one server.
> > 
> > Any pointer to snippets/samples/documentation pointers useful to Open
> > EJB embedders (beyond testing) would be very welcome.
> 
> Hi Henning!
> 
> We do have various internal APIs for doing this kind of thing, but fair warning they change frequently so don't make for good general purpose work.  Though, I really would like to come up with a wrapper around some of these things.
> 
> This is how we do things internally:
> 
>   http://svn.apache.org/repos/asf/openejb/trunk/openejb3/container/openejb-core/src/test/java/org/apache/openejb/core/stateful/StatefulTest.java
> 
> Have a look around the various configure* methods of the ConfigurationFactory and various create* methods of the Assembler.  Maybe we could use you as a use case for coming up with a more generic API.  So in that regard, what would be the minimum you would need to get your goals accomplished?
> 
> 
> -David
> 

Re: Hot to programmatically deploy ejb module

[David Blevins <da...@visi.com>]

On Jun 21, 2010, at 3:45 AM, Henning Blohm wrote:

> Hi all,
> 
>  we are playing with the idea of integration Open EJB as an EJB feature
> into our low-life-cycle-management-efforts platform z2 Environment
> (www.z2-environment.eu). To do so, we would need to programmatically
> deploy EJB modules. I search the documentation and Javadocs but failed
> to find an entry point to deployment.
> 
> So, if there is, can anybody point me to documentation on how to deploy
> programmatically on OpenEJB?
> 
> Preferrably we would like to deploy from classpath, i.e. without
> actually creating a jar. In contrast to the embedded examples however,
> the module's class loader is not the one of the OpenEJB implementation
> (but delegating to it). And of course, we wouldn't want to start
> one EJB server for every module, but rather deploy several modules
> to one server.
> 
> Any pointer to snippets/samples/documentation pointers useful to Open
> EJB embedders (beyond testing) would be very welcome.

Hi Henning!

We do have various internal APIs for doing this kind of thing, but fair warning they change frequently so don't make for good general purpose work.  Though, I really would like to come up with a wrapper around some of these things.

This is how we do things internally:

  http://svn.apache.org/repos/asf/openejb/trunk/openejb3/container/openejb-core/src/test/java/org/apache/openejb/core/stateful/StatefulTest.java

Have a look around the various configure* methods of the ConfigurationFactory and various create* methods of the Assembler.  Maybe we could use you as a use case for coming up with a more generic API.  So in that regard, what would be the minimum you would need to get your goals accomplished?


-David