Re: pl/python custom exceptions for SPI

On sön, 2011-02-06 at 20:44 +0100, Jan Urbański wrote:
> On 27/01/11 23:24, Jan Urbański wrote:
> > On 11/01/11 12:20, Jan Urbański wrote:
> >> On 11/01/11 01:27, Tom Lane wrote:
> >>> Hannu Krosing <hannu@2ndquadrant.com> writes:
> >>>> On 10.1.2011 17:20, Jan Urbański wrote:
> >>>>> I changed that patch to use Perl instead of sed to generate the
> >>>>> exceptions, which should be a more portable.
> > 
> > Updated as an incremental patch on to of the recently sent version of
> > explicit-subxacts.
> 
> Updated again.

Why do the error messages print spiexceptions.SyntaxError instead of
plpy.spiexceptions.SyntaxError?  Is this intentional or just the way it
comes out of Python?

Please add some documentation.  Not a list of all exceptions, but at
least a paragraph that various kinds of specific exceptions may be
generated, what package and module they are in, and how they relate.