On 04/07/2008, at 2:58 AM, Florijan Stamenkovic wrote:
Hi all,
While reading older discussions on dealing with DB uniqueness
restraints I've found out that the EOGeneralAdaptorException thrown
differs among databases. Is there some generic code that deals with
this in absolute terms ( don't you just *love* the word absolute
being used in conjunction with software :) ? If there is in WOnder,
could someone please be so kind to point me in the right direction
(which part of WOnder) so I can look at it?
Or should I write some pure EOF code like: Fetch -> Check uniqueness
-> Create new record -> Save -> Fetch -> Check, or something along
those lines?
I don't know about you but this just screams race condition to me.
However unlikely it may be to happen trying to do uniqueness without
using an atomic operation is extremely painful to get right, and
difficult to test properly.
This would assume that I know which attributes should be unique in
code, which can be done. I'd rather not deal with this like this, it
seems a nuisance.
Thanks,
Flor
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