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From David Blevins <>
Subject Re: No Maven2 Best Practices?
Date Thu, 08 May 2008 21:54:38 GMT

On May 8, 2008, at 1:11 PM, Gegas wrote:

> Gegas wrote:
>> It's especially the persistence.xml that's my concern.
>> 1. The src/main/resources/persistence.xml is mapped to my  
>> production data
>> source
>> 2. The src/test/resources/persistence.xml is mapped to a in-memory
>> database (HSQLDB)
>> The production ejb-jar.xml might contain security constraints etc.  
>> not in
>> focus when testing etc.
>> What do yoy think? Is it possible to have different persistence.xml?
>> Kind regards, Andreas
> I'm stupid... of course the persistence.xml in src/main/resources is  
> good
> enough for both production and test!!!
> Sorry for my stupid mistake :-(

Heh :)  It's not so stupid as we did put some fancy code for mapping  
the datasources to your persistence.xml without which you might  
actually need to have separate persistence.xmls.  But we work hard to  
adapt things to the environment you setup so these kinds of issues are  
avoided.  And then of course we went the extra mile to make sure you  
could setup your entire environment right in your test case, config  
file free, which is nice icing on the cake.  That also allows you to  
shut off things like transaction or security processing, which can be  
nice.  Well, technically you're turning *on* the mock transaction  
manager and/or security service we provide, but you get the idea :)

The one thing that you really might want a different persistence.xml  
for is maybe there is some JPA provider specific property you use in  
production that you don't want enabled in test (or vice versa).  I  
suspect that'll be a rare case, but it's certainly something to keep  
an eye out for.

> But(!), I still think it would be interesting to be able to split  
> test from
> production using the "Maven" best practices.

Yea, it's definitely an idea to keep on the radar.  We already do  
allow you to supplement your testing with a separate set of test ejbs  
which live in src/test/java and are configured via a src/test/ 
resources/META-INF/ejb-jar.xml, so we'd probably have to find a  
different way to have a "test" ejb-jar.xml for the production ejbs in  
src/main/java.  Maybe something as simple as looking for a test.ejb- 
jar.xml file which we'd prefer over the ejb-jar.xml for testing  

If the need comes up, definitely let us know.


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