On Thu, Nov 17, 2016 at 10:56 PM, Dmitry Dolgov <9erthali...@gmail.com>

> > On 15 November 2016 at 15:03, Aleksander Alekseev <
> a.aleks...@postgrespro.ru> wrote:
> > Hello.
> >
> > I took a look on the latest -v4 patch. I would like to note that this
> > patch breaks a backward compatibility. For instance sr_plan extension[1]
> > stop to compile with errors
> Thank you for the feedback.
> Well, if we're speaking about this particular extension, if I understood
> correctly, it fetches all parse tree nodes from Postgres and generates code
> using this information. So to avoid compilation problems I believe you
> need to
> run `make USE_PGXS=1 genparser` again (it worked for me, I don't see any
> mentions of `ArrayRef`).
> But speaking generally, I don't see how we can provide backward
> compatibility
> for those extensions, who are strongly coupled with implementation details
> of
> parsing tree. I mean, in terms of interface it's mostly about to replace
> `ArrayRef` to `SubscriptingRef`, but I think it's better to do it in the
> extension code.

Moved to next CF with "needs review" status.

Hari Babu
Fujitsu Australia

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