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From Dain Sundstrom <>
Subject Re: Set query params without TX?
Date Wed, 25 Apr 2007 17:04:25 GMT
On Apr 24, 2007, at 10:35 PM, Patrick Linskey wrote:

> Yep -- you've gotta keep it open. If you want to support any JPA impl,
> you need to have an EM proxy (please please please make it a dynamic
> proxy that implements all the interfaces that the proxied thing
> implements).

That code is from my proxy.

> If you're happy tying yourself to OpenJPA (or if you want to optimize
> for OpenJPA), then you can use the openjpa.AutoDetach property to tell
> OpenJPA how to handle non-transactional work. In that scenario, you  
> can
> keep a single EM per your delegating instance, and rely on OpenJPA  
> to do
> the transactional PC semantics.

I just might give that a try.

If I want to have generic code, how am I supposed to implement the  
createNamedQuery method?  Do I leave the EM open forever?  That  
doesn't seem right.  So when am I supposed to close the EM?


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