Re: embeding OpenEJB into WAR

[Petr Pudlák]

David Blevins wrote:
> 
> 
> On Jul 28, 2008, at 7:59 AM, Petr Pudlák wrote:
> 
>>
>> Hi, I was searching through OpenEJB documentation, but I wasn't able  
>> to find
>> an answer to my question: Is it possible to embed OpenEJB into a pure
>> servlet application (so that I get EJBs, persistence, etc.) without
>> installing OpenEJB in advance?
>>
>> I sucessfully used OpenEJB with the Tomcat plug-in, that works very  
>> nice.
>> But best would be if I could create a single WAR that would contain
>> everything and that could be simply deployed into Tomcat (or another
>> container) without installing anything. Is this possible? Does  
>> anybody have
>> an experience with it?
> 
> ...
> 
> It would be possible to readd something like that and fully support  
> EJBs in an embedded scenario like the one you describe, but the  
> servlet side of things would more or less remain "as is".  The  
> servlets would be able to look up ejbs and the ejbs themselves would  
> have full support for JPA, JMS, WebServices, etc. but servlets would  
> be plain servlets.  This could be fine if you delegate most the work  
> to ejbs.
> 
> Would something like that be useful to you?
> 
> -David
> 

Yes, that would be exactly what I need!
I mostly use libraries like  http://echo.nextapp.com/ Echo  or 
http://wicket.apache.org/ Wicket  so anyhow I don't create servlet classes
directly. Instead, I just look up my beans using JNDI from my UI components
and then the beans do all the application logic.

  Petr
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Re: embeding OpenEJB into WAR

[David Blevins]

On Jul 28, 2008, at 7:59 AM, Petr Pudlák wrote:



Hi, I was searching through OpenEJB documentation, but I wasn't able  
to find

an answer to my question: Is it possible to embed OpenEJB into a pure
servlet application (so that I get EJBs, persistence, etc.) without
installing OpenEJB in advance?

I sucessfully used OpenEJB with the Tomcat plug-in, that works very  
nice.

But best would be if I could create a single WAR that would contain
everything and that could be simply deployed into Tomcat (or another
container) without installing anything. Is this possible? Does  
anybody have

an experience with it?


We used to have that exact feature in OpenEJB 1.0, but we temporarily  
retired it as it isn't clear how to support some of the features like  
servlet dependency injection.  I.e. you could package OpenEJB inside  
your war and have your own private EJB container inside the webapp.


It would be possible to readd something like that and fully support  
EJBs in an embedded scenario like the one you describe, but the  
servlet side of things would more or less remain "as is".  The  
servlets would be able to look up ejbs and the ejbs themselves would  
have full support for JPA, JMS, WebServices, etc. but servlets would  
be plain servlets.  This could be fine if you delegate most the work  
to ejbs.


Would something like that be useful to you?

-David