Re: dealing with extension dependencies that aren't quite 'e'

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Abhijit Menon-Sen <ams(at)2ndQuadrant(dot)com>
Cc: David Steele <david(at)pgmasters(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>
Subject: Re: dealing with extension dependencies that aren't quite 'e'
Date: 2016-04-04 21:55:03
Message-ID: 20160404215503.GA237481@alvherre.pgsql
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Abhijit Menon-Sen wrote:
> At 2016-03-29 10:15:51 -0400, david(at)pgmasters(dot)net wrote:
> >
> > Either way it looks like you need to post a patch with more
> > documentation - do you know when you'll have that ready?
> Here it is.
> (I was actually looking for other potential callers, but I couldn't find
> any. There are some places that take a RangeVar and make a list from it,
> but they are creating new nodes, and don't quite fit. So the only change
> in this patch is to add a comment above the get_object_address_rv
> function.)

I gave this another look. To test whether the grammar is good, I tried
a few additional object cases. They all seem to work fine, provided
that we use the same production for the object name as in the
corresponding ALTER <foo> case for the object. The attached is simply
an extension with those new grammar rules -- I didn't go beyond ensuring
the new productions didn't cause any conflicts. (I also removed the new
includes in alter.c, which are no longer necessary AFAICS.)

At this point I think we're missing user-level docs for the additional
clause in each ALTER command. I think it's a fiddly business, because
each individual ALTER page is going to need to be touched for the new
clause, but that can't be avoided.

Do you have any ideas on how this would appear in regression tests?

Álvaro Herrera
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

Attachment Content-Type Size
extdepend-20160404.diff text/x-diff 16.4 KB

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