Re: Status of Fix Domain Casting TODO

From: "Andrew Dunstan" <andrew(at)dunslane(dot)net>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Status of Fix Domain Casting TODO
Date: 2007-01-02 00:30:40
Message-ID: 4133.24.211.165.134.1167697840.squirrel@www.dunslane.net
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Tom Lane wrote:
> "Jim C. Nasby" <jim(at)nasby(dot)net> writes:
>> FWIW, I'm running into this trying to create a 'raw' domain that would
>> automagically convert hex strings into actual binary data for storage in
>> a bytea.
>
> I think you've got 0 chance of implementing that as a domain rather than
> an independent type. Without or without revisions in the casting rules,
> a domain has not got its own I/O functions, and never will.

This might be less of an issue if we allowed such IO functions to be
written in a loadable PL rather than in C.

cheers

andrew

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