[log4perl-devel] Re: MDC and [undef] (was Re: Log::Log4perl::Appender::DBI questions)

[Alex M. <ale...@cl...>]

On Wed, Oct 22, 2003 at 11:18:50AM -0700, Mike Schilli wrote:
> Kevin Goess wrote on 10/21/2003, 10:39 PM:
> 
>  > Do you remember the rationale for returning a string instead of just
>  > undef?  Maybe we should at least make that configurable?  What do you
>  > think?
> 
> Think the rationale was that if the configuration file specifies a 
> layout with an MDC field and it's not defined in the code, 
> 'uninitialized variable' warnings are going to be all over the place. If 
> it causes problems somewhere else, it's more consistent to just return 
> undef. Fixed and checked in ...

But now it fails with the message : 

DBD::Pg::st execute failed: ERROR: pg_atoi: zero-length string at
/usr/local/lib/perl5/site_perl/5.8.0/Log/Log4perl/Appender/DBI.pm line 96.

When I look at the query using DBI->trace(2), I see that it actually
tries to insert a zero-length string instead of the expected NULL value.

I've tried to figure out where the undef value is changed to a
zero-length string in the code, but didn't success for now.

-- 
Alex Marandon
CLARISYS Informatique
http://clarisys.fr