Message-ID: <50F8B514.2050105@2ndQuadrant.com>
Date: Fri, 18 Jan 2013 10:36:04 +0800
From: Craig Ringer <craig@2ndQuadrant.com>
Organization: 2nd Quadrant
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To: Andres Freund <andres@2ndquadrant.com>
CC: Dimitri Fontaine <dimitri@2ndQuadrant.fr>, Tom Lane <tgl@sss.pgh.pa.us>,
	Simon Riggs <simon@2ndQuadrant.com>, Robert Haas <robertmhaas@gmail.com>,
	Alvaro Herrera <alvherre@2ndQuadrant.com>,
	PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Subject: Re: Event Triggers: adding information
References: 
 <CA+TgmobfeB_YpgMv5NjW52tG36Hg_DY=jq0XDkE5zwCstPQ4pg@mail.gmail.com>
	<m2pq14m7sx.fsf@2ndQuadrant.fr>
	<CA+TgmoYEW583z+oisToCYQMz2grzpavdXrCi3-W2D_+nucVhzQ@mail.gmail.com>
	<CA+U5nM+Uuh7cyHSJ5wN54twBUGSncJzqpZB83xuZw4VP7UCziQ@mail.gmail.com>
	<16675.1358454278@sss.pgh.pa.us> <m2hamfcwc8.fsf@2ndQuadrant.fr>
	<18941.1358462151@sss.pgh.pa.us> <m2ehhjbf48.fsf@2ndQuadrant.fr>
	<20130118013334.GE3074@awork2.anarazel.de>
	<50F8B400.1090701@2ndQuadrant.com>
	<20130118023437.GH3074@awork2.anarazel.de>
In-Reply-To: <20130118023437.GH3074@awork2.anarazel.de>
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On 01/18/2013 10:34 AM, Andres Freund wrote:
> On 2013-01-18 10:31:28 +0800, Craig Ringer wrote:
>> On 01/18/2013 09:33 AM, Andres Freund wrote:
>>> I have no problem requiring C code to use the even data, be it via
>>> hooks or via C functions called from event triggers. The problem I
>>> have with putting in some hooks is that I doubt that you can find
>>> sensible spots with enough information to actually recreate the DDL
>>> for a remote system without doing most of the work for command triggers.
>> Is that so much of a problem if it's OK to break it between major
>> versions? Maybe require compilation with -DPG_NON_FORWARD_COMPATIBLE to
>> make the hooks visible in the headers, so nobody can claim they didn't know?
> I can't follow the connection between what you quote from my mail and
> what you are saying ;)
... in which case I probably misunderstood part of the discussion. I'm
trying to skim things fairly quickly in order to keep up and continue
working through the CF backlog.

-- 
 Craig Ringer                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services


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