[Please CC replies, thanks] On Thu, Aug 11, 2005 at 02:17:30PM -0400, Tom Lane wrote: > Martijn van Oosterhout <kleptog@svana.org> writes: > > What I'm trying to do now is use fcinfo->flinfo->fn_oid to lookup > > pg_proc and get the return type from there, but something tells me > > there must be an easier way. > > No, I think you're stuck. The internal calls for type I/O routines > don't set up fn_expr (since there is no expression tree). > > One possibility, depending on your time horizon for this, is to change > the getTypeIOParam rules so that ordinary types get their own OID as > second argument.
Hmm, I was thinking about that. While reading the documentation I was thinking "surely they'd pass their own oid, giving zero would be silly" so I was kind of surprised when I did get zero. I was thinking of actually also storing the oid in the typelem field but the docs imply this does something fancy with subscripting. I havn't traced the code paths for that yet. At the very least I think it would confuse anything looking for arrays. I also thought about typmod (the third argument) but that seems to almost always be -1. Would a patch to change the rules be accepted, or would it be considered a unnecessary backward incompatable change? Thanks in advance, -- Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/ > Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a > tool for doing 5% of the work and then sitting around waiting for someone > else to do the other 95% so you can sue them.
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