On Thu, Nov 10, 2005 at 03:28:55PM -0500, Andrew Dunstan wrote: > Eek! I would be prepared to go to quite a lot of trouble to avoid that. > > My idea was to have the functions that need access to the text values > look up fcinfo->flinfo->fn_oid and then use that to look up the type > info. But that would mean we would need pg_proc entries for these > functions for each enum, even if it's the same function underneath, > wouldn't it?
There are functions in the backend already to help you: argoid = procLookupArgType( fcinfo->flinfo->fn_oid, 0 ); returns the OID of the type of your first arguments. returnoid = procLookupRettype( fcinfo->flinfo->fn_oid ); returns your return type. These work even if you are in a type input/output function. Here is some code that uses these: http://svana.org/kleptog/pgsql/taggedtypes.html Have a nice day, -- 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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