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Re: Back with weird problems: PK generation keeps generating same PK... up to a moment.
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Re: Back with weird problems: PK generation keeps generating same PK... up to a moment.


  • Subject: Re: Back with weird problems: PK generation keeps generating same PK... up to a moment.
  • From: "ocs.cz" <email@hidden>
  • Date: Sun, 17 May 2015 12:19:36 +0200

Chuck,

> On 14 5 2015, at 2:22 am, Chuck Hill <email@hidden> wrote:
>
> FrontBase will “return” the sequence number if the transaction is rolled back, but I am pretty sure that EOF does a commit immediately after selecting for a PK.
>
> It is possible that somehow the commit after the PK select failed and the exception got eaten, I suppose.  That seems a bit far fetched.

Hmmm.... here I might possibly see a way to prevent the problem in future: correct me please if I am wrong, but I understand permanentGlobalID causes this generation (and commit), right?

Well then, what if I, at the moment any EO gets inserted into an EC, immediatelly called permanentGlobalID for it?

Unless I am overlooking something, it should get, commit and assign a safe PK for the EO. Later, when the EO gets saved, no PK clash would be possible.

About the only drawback I can see is that when generating lots of new EOs, there would be many unnecessary roundtrips to the DB and it would be sloow. But normally I create at worst tens (normally just a couple) of EOs inside a r/r loop, and batch imports etc. need to be optimised separately anyway.

Might this be a solution? Or am I overlooking something of importance, as so often?

Thanks a lot,
OC



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  • Follow-Ups:
    • Re: Back with weird problems: PK generation keeps generating same PK... up to a moment.
      • From: Chuck Hill <email@hidden>
References: 
 >Back with weird problems: PK generation keeps generating same PK... up to a moment. (From: OC <email@hidden>)
 >Re: Back with weird problems: PK generation keeps generating same PK... up to a moment. (From: Chuck Hill <email@hidden>)
 >Re: Back with weird problems: PK generation keeps generating same PK... up to a moment. (From: Samuel Pelletier <email@hidden>)
 >Re: Back with weird problems: PK generation keeps generating same PK... up to a moment. (From: OC <email@hidden>)
 >Re: Back with weird problems: PK generation keeps generating same PK... up to a moment. (From: Samuel Pelletier <email@hidden>)
 >Re: Back with weird problems: PK generation keeps generating same PK... up to a moment. (From: Chuck Hill <email@hidden>)

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