Re: How to implement a SP-GiST index as a extension module?

Alexander Korotkov <a.korotkov@postgrespro.ru> writes:
> I think Connor struggles to implement just an operator class.  Advising him
> to implement an index access method is a good way to get him away of
> PostgreSQL hacking for a long time :)

Yeah.  To answer the question a bit more directly: there are not any
contrib modules that add SP-GiST opclasses, but there are some that add
GiST or GIN opclasses, so any one of those would serve as a model for the
basic mechanism of writing an extension.  Just replace the AM-specific
support functions for those AMs with the ones SP-GiST uses.  (You can crib
some code details from the in-core SP-GiST support functions.)

			regards, tom lane