anonymous record as an in parameter

Hi there,

i'd like to write a function (sql or plpgsql) that takes an anonymous record as an in parameter. You know, kind of like
(simplified):

create function f_tablename (p_anyrecord record) returns text as
$body$
select $1.tableoid::regclass::text
$body$
language sql;

...but PG 9.0.3 doesn't like that:
ERROR:  SQL functions cannot have arguments of type record. It also doesn't work with plpgsql.
Is there a way?

Best wishes from Berlin,
Maximilian Tyrtania

Maximilian Tyrtania Software-Entwicklung
10969 Berlin
http://www.contactking.de