Re: poll: CHECK TRIGGER?

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: poll: CHECK TRIGGER?
Date: 2012-03-09 20:21:51
Message-ID: CA+TgmoYeVjv2K0Ru3Vy9J7LL1LOi79Cg6C+i60ftYUzt47gsMg@mail.gmail.com
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On Fri, Mar 9, 2012 at 3:15 PM, Peter Eisentraut <peter_e(at)gmx(dot)net> wrote:
> On tor, 2012-03-08 at 19:19 -0500, Robert Haas wrote:
>> On Thu, Mar 8, 2012 at 4:54 PM, Peter Eisentraut <peter_e(at)gmx(dot)net> wrote:
>> >      * It's not terribly important to me to be able to run checkers
>> >        separately.  If I wanted to do that, I would just disable or
>> >        remove the checker.
>>
>> Does this requirement mean that you want to essentially associate a
>> set of checkers with each language and then, when asked to check a
>> function, run all of them serially in an undefined order?
>
> Well, the more I think about it and look at this patch, the more I think
> that this would be complete overkill and possibly quite useless for my
> purposes.  I can implement the entire essence of this framework (except
> the plpgsql_checker itself, which is clearly useful) in 10 lines,
> namely:
>
> CREATE OR REPLACE FUNCTION pep8(src text) RETURNS text
> IMMUTABLE
> LANGUAGE plsh
> AS $$
> #!/bin/bash
>
> pep8 --ignore=W391 <(echo "$1") 2>&1 | sed -r 's/^[^:]*://'
> $$;
>
> SELECT proname, pep8(prosrc) FROM pg_proc WHERE prolang = ANY (SELECT oid FROM pg_language WHERE lanname LIKE '%python%') ORDER BY 1;
>
> I don't know what more one would need.

Well, I agree with you, but Tom disagrees, so that's why we're talking
about it...

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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