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From David Jencks <>
Subject Re: proxy session w/ built-in dbcp + openjpa
Date Mon, 11 Feb 2008 06:17:06 GMT
Geronimo does not use dbcp, could you explain why you think it does?

Could you explain what proxy sessions do?  There might be a simple  
solution, but I have no idea what you are trying to achieve.  For  
instance if you are trying to change the authentication information  
on an existing connection this can be achieved by adding a bit of  
code to the tranql oracle wrapper.

david jencks

On Feb 10, 2008, at 6:52 PM, Brian Gregory wrote:

> I'm attempting to use proxy session w/ oracle and the built-in dbcp  
> + openjpa
> in geronimo but I'm hung up at the start. I've done this before  
> with c3p0 +
> hibernate but c3p0 has a ConnectionCustomizer class that allows you to
> register for checkout and checkin events from the connection pool,  
> thus
> allowing the proxy user to be modified prior to connections being  
> used.
> Unfortunately I can't find a way to do this with dbcp, but I have a  
> few
> ideas:
> 1. Subclass the dbcp PoolingDataSource such that proxy users are  
> set up in
> the getConnection() method - Although I would have to define a  
> database pool
> w/ that would use the new class (no idea) and setup openjpa to use  
> this
> database pool (not sure either)
> 2. Use c3p0 w/ openjpa instead of the built-in dbcp. Is there a way to
> deploy a database pool in geronimo w/ a 3rd party pooling library?  
> Is there
> a good way to set up a 3rd party db pool if not?
> Any other ideas are appreciated.
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