Re: Proposal: CREATE CONVERSION

On Thu, Jul 11, 2002 at 05:26:01PM +0900, Tatsuo Ishii wrote:
> > Where/how is describe conversion between encoding id and encoding
> > name? (I maybe something overlook:-) I expect new encoding system
> > will extendable and encodings list not will hardcoded like now.
> > (extendable = add new encoding without PostgreSQL rebuild)
>
> User defined charsets(encodings) is under discussion and I believe it
> would not happen for 7.3.
>
> > BTW, the client site needs routines for work with encoding names too
> > (pg_char_to_encoding()). Hmm.. it can't be extendable, or yes?
>
> pg_char_to_encoding() is already in libpq. Or am I missing something?

It works with encoding table (pg_enc2name_tbl) and it's compiled
into backend and client too. It means number of encoding is not possible
change after compilation and you (user) can't add new encoding without
pg_enc2name_tbl[] change. I original thought we can add new encodings
on-the-fly in 7.3 :-) You're right.

IMHO implement "User defined charsets(encodings)" will problem for
current libpq design.

Karel

--
Karel Zak <zakkr(at)zf(dot)jcu(dot)cz>
http://home.zf.jcu.cz/~zakkr/

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