Re: How do I save data and then raise an exception? - Mailing list pgsql-general

From Blazej
Subject Re: How do I save data and then raise an exception?
Date
Msg-id 819df3760810030910rfcb7c22g99b50d90355ec360@mail.gmail.com
Whole thread Raw
In response to Re: How do I save data and then raise an exception?  ("Rob Richardson" <Rob.Richardson@rad-con.com>)
Responses Re: How do I save data and then raise an exception? -- solved  ("Rob Richardson" <Rob.Richardson@rad-con.com>)
List pgsql-general
Maybe try pltclu - you may use socket (TCP/IP) or to write data to OS
filesystem. I was doing in pltclu very similar things.

Write what you concrete watnts (in points), then I will try to write
you scripts.

Regards
Blazej


2008/10/3 Rob Richardson <Rob.Richardson@rad-con.com>:
> That's how it should have been done, but it wasn't.  It's too late to
> change it now.  If I make any change to the C++ code, I run into a
> horrible case of DLL Hell.  I told my bosses that if we change any C++
> code at that site, we have to change all of it.  So I need a pure
> database solution.  Or maybe something else.  Now I'm thinking of a
> Python script, of which there are several running on site.
>
> RobR
>
>
> -----Original Message-----
> From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
> Sent: Friday, October 03, 2008 8:47 AM
> To: Rob Richardson
> Cc: pgsql-general@postgresql.org
> Subject: Re: [GENERAL] How do I save data and then raise an exception?
>
> "Rob Richardson" <Rob.Richardson@rad-con.com> writes:
>> I think I just came up with a thoroughly ugly idea.  The database
>> supports an annealing shop, in which coils are assigned to charges.
>> After the check fails, I end up with coils assigned to a charge that
>> does not exist.  I could set up a job that runs every minute and
>> checks all coils with status "Assigned" to make sure that the
>> associated charges actually exist.  That would fix another recurring
>> problem, in which a user intentionally deletes a charge but the
>> charge's coils stay assigned to that charge.
>
> Why don't you have a foreign key constraint from coils to charges?
>
>                        regards, tom lane
>
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