Re: sql_drop Event Trigger - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: sql_drop Event Trigger
Date
Msg-id 20130206144038.GD4299@alvh.no-ip.org
Whole thread Raw
In response to Re: sql_drop Event Trigger  (Dimitri Fontaine <dimitri@2ndQuadrant.fr>)
List pgsql-hackers
Dimitri Fontaine escribió:
> Robert Haas <robertmhaas@gmail.com> writes:

> > I have not tested the actual behavior of the latest patch, but I think
> > we want to define things so that the
> > pg_event_trigger_dropped_objects() function returns, specifically, the
> > list of objects dropped by the command which caused the event trigger
> > to fire.  In other words, in the above example, the first, recursive
> > invocation of B should see the object removed by A's DROP-IF-EXISTS,
> > and the second invocation should see the object removed by the
> > toplevel command.
>
> I disagree with that. I don't see why the enclosing event trigger
> shouldn't be aware of all the objects dropped by the command that just
> ran to completion, *including* the effects of any event trigger fired
> recursively or not.

Not sure about that.  If the trigger records objects dropped in a table,
aren't they going to show up there twice if you do that?

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



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