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From "David Jencks (JIRA)" <>
Subject [jira] Updated: (GERONIMO-2491) Hibernate passes connections between servlets which we don't support
Date Thu, 07 Dec 2006 20:30:24 GMT
     [ ]

David Jencks updated GERONIMO-2491:

    Fix Version/s: 2.0-M1
                       (was: 1.1.2)
                       (was: 1.2)
         Assignee: Jeff Genender  (was: David Jencks)

If you can get roller to deploy.... and this is still a problem please reassign to me with
a stack trace.   If we fixed this problem please close.  If you can't get roller to deploy
anymore either, assign it back to me :-)

> Hibernate passes connections between servlets which we don't support
> --------------------------------------------------------------------
>                 Key: GERONIMO-2491
>                 URL:
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>          Components: connector
>    Affects Versions: 1.1.1, 1.2
>            Reporter: David Jencks
>         Assigned To: Jeff Genender
>             Fix For: 2.0-M1
> This is based on examination of roller running in geronimo-tomcat and is partly speculation.
 There's certainly  a problem.
> 1. request sets InstanceContext 1 in ConnectionTrackingCoordinator.
> 2. roller starts a persistence context (in hibernate jargon a session) in a servlet filter.
 No connection is opened yet
> 3. tiles dispatches to a jsp
> 4. dispatch sets InstanceContext 2 in CTC
> 5. jsp does something persistent causing hibernate to open a db connection.  This is
registered with IC 2.
> 6. jsp dispatch returns, so IC 1 is set in CTC
> 7. roller commits the persistence context in the servlet filter, which closes the connection.
 Closing the connection attempts to unregister from the current IC.  IC 1 doesn't know anything
about this connection..... we get an NPE.
> The solution isn't clear to me at the moment.  

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