From: | ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> |
---|---|
To: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
Cc: | Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: generic reloptions improvement |
Date: | 2008-12-22 02:36:55 |
Message-ID: | 20081222110515.846E.52131E4D@oss.ntt.co.jp |
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Lists: | pgsql-hackers |
Hi, I have a comment about the generic-reloptions patch.
Alvaro Herrera <alvherre(at)commandprompt(dot)com> wrote:
> Here's a patch for improving the general reloptions mechanism. What
> this patch does is add a table-based option parser. This allows adding
> new options very easily, and stops the business of having to pass the
> minimum and default fillfactor each time you want the reloptions
> processed.
You use struct relopt_gen (and its subclasses) for the purpose of
both "definition of options" and "parsed result". But I think
it is cleaner to separete parsed results into another struct
something like:
struct relopt_value
{
const relopt_gen *which;
bool isset;
union
{
bool val_bool;
int val_int;
double val_real;
} types;
};
the ariables 'isset' and 'parsed_val' are not used in definition, AFAICS.
Regards,
---
ITAGAKI Takahiro
NTT Open Source Software Center
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