[Zope-DB] Problems with transaction management and many database
dieter at handshake.de
Thu Feb 5 13:29:58 EST 2004
M.-A. Lemburg wrote at 2004-2-4 22:37 +0100:
>Dieter Maurer wrote:
>> It is known:
>> Transactions modified during error handling are not properly
>> There has been a long discussion between Toby and me on "zope-dev".
>> Toby convinced me that the abort should happen after
>> error handling (and not before, as does the usual Zope code).
>> I fear, the problem is still present in all official Zope versions.
>Is there some way to work around this caveat ?
You can abort the transaction at the end of your "standard_error_message".
You will need an External Method, as "get_transaction" is not
available to TTW code.
The alternative is to put the "abort" in "ZPublisher.Publish.publish".
This, of course, implies a Zope modification.
I tried (in our private Zope installation) to do error handling
in the same transaction as the main thread (as Toby suggested).
But I failed due to a "get_transaction().begin()" at the begin of error
handling (this calls an implicite "abort").
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