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Re: DB uniqueness constraints and dealing with them
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Re: DB uniqueness constraints and dealing with them


  • Subject: Re: DB uniqueness constraints and dealing with them
  • From: Florijan Stamenkovic <email@hidden>
  • Date: Thu, 03 Jul 2008 13:11:05 -0400


On Jul 03, 2008, at 12:58, 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?

Ah, looking over this I realize I do not say what I want the generic code to do... All I want is find out for which key the uniqueness constraint failed, so I can throw a validation exception.


Or should I write some pure EOF code like: Fetch -> Check uniqueness -> Create new record -> Save -> Fetch -> Check, or something along those lines? 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.

F

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  • Follow-Ups:
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      • From: Mike Schrag <email@hidden>
References: 
 >DB uniqueness constraints and dealing with them (From: Florijan Stamenkovic <email@hidden>)

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