Marko Kreen <mark...@gmail.com> writes: > On Tue, Mar 06, 2012 at 11:10:38AM -0500, Tom Lane wrote: >> Why would you need to know that? The reason the calculation function >> is static is that there's no apparent need to expose that information >> outside the syscache subsystem.
> Because I need to invalidate my own internal state that corresponds > to particular system catalog row? > In current case (plproxy) I need to invalidate libpq connections > that are created from particular foreign server entry. [ shrug... ] You could just flush 'em all, which is what most existing inval callbacks do. Admittedly a libpq connection is a bit more expensive than the average bit of invalidatable state, but how often does pg_foreign_server get updated? Or you could do like setrefs.c does, and assume you know how to calculate the hash value for an OID-keyed cache. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers