Re: dblink: add polymorphic functions.

On 01/08/2016 07:31 AM, Tom Lane wrote:
> Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> writes:
>> So, is this going anywhere?
>
> Oh, sorry, was I on the hook to review that?
>
> [ quick look... ] This doesn't seem like it responds to my criticism
> above. I think what we want is that for every LookupTypeName call site
> that could potentially be invoking this notation, we must actually make
> provision for passing a valid pstate, one containing in particular the
> source text for the nodetree we're parsing. Without that we will not
> get error messages of the quality we expect (with error pointers).
>
> Another issue now that I look at it is that parser-detected semantic
> problems in the expression will result in ereport(ERROR), rather than
> returning NULL which is what you'd kind of expect from the API spec for
> LookupTypeName. That's probably all right considering that many other
> syntactic issues throw errors inside this function; but maybe we'd better
> adjust the API spec.

Ok, back to the drawing board. Thanks for the feedback.

Joe

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