Re: WIP: Rework access method interface

Tom Lane wrote:

> I follow your reasoning, but I don't particularly want to make this
> patch wait on a large and invasive refactoring of existing headers.

Sure.

> As a down payment on this problem, maybe we could invent a new planner
> header that provides just enough info to support amapi.h and fdwapi.h;
> it looks like this would be "typedef struct PlannerInfo PlannerInfo;",
> likewise for RelOptInfo, ForeignPath, and IndexPath, and real declarations
> of Cost and Selectivity.

Works for me, under the assumption that, down the road and without any
rush, we can shuffle some more stuff around to make this whole area a
bit cleaner.

> Not sure what to name the new header.

Yeah, this is always a problem for such patches :-(  I have no great
ideas ATM.

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Álvaro Herrera                http://www.2ndQuadrant.com/
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