Gurjeet Singh <singh(dot)gurjeet(at)gmail(dot)com> writes:
> I understand that we need to hide guts of an implementation. But without
> this the Index Advisor will have to emulate what LookupOpclassInfo() does
> and that's a lot of code that I am afraid, if emulated by another function
> in Index Advisor, is more prone to obsolecence than calling
> IndexSupportInitialize().
The only reason you'd need that code is if you were trying to construct
a fake Relation structure, which seems unnecessary and undesirable.
regards, tom lane