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From "Craig Russell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JDO-398) Add servlet Filter utility class managing a PersistenceManager per request
Date Wed, 19 Jul 2006 21:04:14 GMT
    [ http://issues.apache.org/jira/browse/JDO-398?page=comments#action_12422247 ] 
            
Craig Russell commented on JDO-398:
-----------------------------------

The filter looks good. It is vaguely familiar. I recall seeing similar code in a JavaOne presentation
a few years back. ;-)

If the init getPersistenceManagerFactory call fails, have you looked at how the error is reported?
You have special code to log some configuration errors, but nothing explicit for the getPersistenceManagerFactory
call, which in my experience is the most likely API to fail. It might be good to wrap the
call with try/catch and log the exception at level SEVERE. If you've already tested that a
failure in init does the appropriate logging, you can ignore this.

There are several >80 character lines.



> Add servlet Filter utility class managing a PersistenceManager per request
> --------------------------------------------------------------------------
>
>                 Key: JDO-398
>                 URL: http://issues.apache.org/jira/browse/JDO-398
>             Project: JDO
>          Issue Type: Task
>          Components: util20
>    Affects Versions: JDO 2 final
>            Reporter: Michael Bouschen
>         Assigned To: Michael Bouschen
>            Priority: Minor
>             Fix For: JDO 2 maintenance release 1
>
>         Attachments: JDO-398.patch
>
>
> I propose to add a new class JDOFilter implementing a servlet filter (interface javax.servlet.Filter)
to a new package org.apache.jdo.util.web for web support utility classes. The filter init
method creates a PMF instance. Method doFilter creates a PersistenceManager, stores it as
a request attribute and then calls the filter chain. It closes the PersistenceManager after
the chain returns. The PMF is closed in the filter method destroy.

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