Re: [PATCHES] WITH DELIMITERS in COPY

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Gavin Sherry <swm(at)linuxworld(dot)com(dot)au>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [PATCHES] WITH DELIMITERS in COPY
Date: 2002-04-16 23:55:25
Message-ID: 200204162355.g3GNtQW28665@candle.pha.pa.us
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Gavin Sherry wrote:
> > I see what it is doing, but it seems quite unclear. Seeing that people
> > are using this as a pattern for other param processing, I will work on a
> > patch to convert this to DefElem.
>
> Wouldn't a few macros clean this up better (ie, make it clearer)?
>
> #define CDBOPTDBPATH 1
>
> #define optparam(l) (char *)lsecond(l)
> #define optparami(l) (int)lfirsti(lnext(l))
>
> foreach(l, $5)
> {
> List *optitem = (List *) lfirst(l);
>
> switch (lfirsti(optitem))
> {
> case CDBOPTDBPATH:
> n->dbpath = optparam(optitem);
> break;
>
> ...
>
>
> Regardless, I guess that code is pointless since the consensus seems to be
> that the use of DefElem is better since it allows for the abstraction of
> the parameters list. Obviously a good thing if CREATE DATABASE, COPY etc
> are to be extended often enough.
>

Yes, macros would be the way to go if we didn't have a cleaner
alternative.

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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