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From David Jencks <>
Subject Re: Start-up classes
Date Wed, 23 Nov 2005 20:05:03 GMT

On Nov 23, 2005, at 11:47 AM, wrote:

> I am migrating an application from WebLogic to Geronimo. It consists 
> of EJBs but it also has a "startup" class,
> meaning a class whose main() method has to be invoked before the ejbs 
> are deployed. Unfortunately this class
> performs a huge initialization procedure during class initialization, 
> and it really has to be done before anything else.
> In WLS there is a <startup> tag in config.xml, and a similar tag in 
> weblogic-application.xml. To do the same in Geronimo
> I am guessing that I can declare a <gbean> inside 
> geronimo-application.xml. Is that correct?

Yes.  However, I'm not sure what you need in terms of timing or what 
you mean by "before the ejbs are deployed".  Our deployment process 
results in defining gbean instances for each ejb, and the application 
configuration just has all the gbeans in it.  Without doing more, there 
is no guarantee that your startup gbean will start before any ejb 
container gbean.  On the other hand, your custom gbean is fairly 
certain to get started before any ejb instances are created or any 
calls to ejbs occur.  If you need your startup code executed before any 
ejb class is loaded however, we'll need to find another solution.  Can 
you tell us anything more about what kinds of things you need to do and 

david jencks
> Thanks
> Guglielmo
> P.S. Your server looks very clean. Thanks for all the work.

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