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From "Pinaki Poddar" <>
Subject RE: Testing an OpenJPA module
Date Tue, 10 Apr 2007 21:02:42 GMT
> such an exhaustive list of possible problems one might run into. 
Murphy's law: 'If something can go wrong, it will".
Extension to Murphy's law: "Murphy was an optimist".

Pinaki Poddar
BEA Systems

-----Original Message-----
From: [] On Behalf Of Jacek
Sent: Tuesday, April 10, 2007 4:00 PM
Subject: Re: Testing an OpenJPA module

On 4/10/07, Pinaki Poddar <> wrote:
> The error message could have been more specific in the following way:
> a) no META-INF/persistence.xml has not been found in classpath
> b) META-INF/persistence.xml has been found but there is no 'ode-store'
> unit defined in it.
> c)  META-INF/persistence.xml has been found but provider can not be 
> loaded/invoked

Thanks! I've never thought about such an exhaustive list of possible
problems one might run into. Nice to keep it handy.

> When I first encountered this error, my interpreation was (b) from the

> way the message was worded.

Perhaps it's because I'm a mere developer so the only answer I'd have
given would've been c) yet I knew others were possible too (just I don't
see them so often).


Jacek Laskowski

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