[Zope3-dev] Re: [ZODB-Dev] revise transaction API

[Edward Moy]

On Jun 14, 2004, at 4:58 AM, Jeremy Hylton wrote:

>> Having real, multiple savepoints would be a great feature and would
>> allow longer-running transactions a lot more flexibility in what sort  
>> of
>> manipulation they can do on their objects. A wizard-style UI is a good
>> usecase for this feature: you'd like to be able to undo changes as the
>> user moved back, and you can't really commit()/abort() the entire
>> transaction without risking "logical corruption" in your application.
>
> I think it's useful for a lot of cases.  Someone had volunteered to  
> work
> on a patch that ported this feature from ZODB 4.  Don't know if this
> ever happened (and probably don't have time to review it myself).

I had posted diffs for ZODB-4-like rollbacks to zodb-dev on April 26,  
and then immediately got side-tracked doing other things.  I wonder if  
my email messages are getting through.

------------------------------------------------------------------------ 
--
Edward Moy
Apple Computer, Inc.
emoy at apple.com

(This message is from me as a reader of this list, and not a statement
from Apple.)