On Sun, Jan 9, 2011 at 4:03 AM, Jeff Davis <pgsql@j-davis.com> wrote:
> It also might be worth figuring out why input functions get the type oid
> and output functions do not. I see this comment above getTypeIOParam():
>
> * As of PostgreSQL 8.1, output functions receive only the value
> itself
> * and not any auxiliary parameters, so the name of this routine is
> now
> * a bit of a misnomer ... it should be
> getTypeInputParam.
>
> So, why was it eliminated?
Good question. The relevant commit is here:
commit 6c412f0605afeb809014553ff7ad28cf9ed5526b
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sun May 1 18:56:19 2005 +0000
Change CREATE TYPE to require datatype output and send functions to have only one argument. (Per recent
discussion,the option to accept multiple arguments is pretty useless for user-defined types, and would be a likely
sourceof security holes if it was used.) Simplify call sites of output/send functions to not bother passing more
thanone argument.
...but I don't understand the motivation behind it.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
