Wouldn't you just select the one you want by name when you call
Persistence.createEntityManager()?
Jon
----- Original Message -----
From: "Craig L Russell" <Craig.Russell_at_Sun.COM>
To: <persistence_at_glassfish.dev.java.net>
Sent: Tuesday, February 27, 2007 3:43 PM
Subject: Re: choosing persistence unit at runtime?
> You might consider putting the persistence.xml file into a jar file
> of its own (a different jar file for each persistence.xml you want).
> Then, select the jar file (with its persistence.xml inside) by
> prepending it to your class path.
>
> Craig
>
> On Feb 27, 2007, at 1:23 PM, jeff wrote:
>
>> if i am using java persistence stand alone, am i able to choose the
>> persistence unit at runtime?
>>
>> i can't see how to do this, because it appears that the
>> persistence.xml file is read from the classpath.
>>
>> any ideas?
>> thanks.
>>
>>
>>
>> The fish are biting.
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>
> Craig Russell
> Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
> 408 276-5638 mailto:Craig.Russell_at_sun.com
> P.S. A good JDO? O, Gasp!
>
>