XML Generator DBI

[Mike Lesser]

Hi all. I'm messing with XML & MySQL, and I may have run into a newbie
snag.
I'm using XML::Generator ::DBI with XML::Handler::YAWriter, in the
same manner that I've seen in tutorials, the MySQL Cookbook, and other
assorted places.
$writer = XML::Handler::YAWriter->new (AsString => 1);
$query = 'SELECT cd_airdate, cd_copies, cd_hilites FROM cds WHERE 
cd_labeled=0
            ORDER BY cd_airdate';
$generator = XML::Generator::DBI->new(  dbh =>$dbh,
                                        Handler =>$writer,
                                        RootElement=>"Creators",
                                        Indent=>1,
                                        QueryElement => '');
$xml_output = $generator->execute($query);
According to the XML::Gen perldoc, "Nulls are handled by excluding 
either
the attribute or the tag." The XML looks and works just fine. No prob.

However,when I use the -w option with the shebang, I get a couple 
warnings
for each record of the database. They're all about the same:

"Use of uninitialized value in string eq at 
/Library/Perl/5.8.1/XML/Generator/
DBI.pm line 180."

Now it seems to me that if nulls are supposed to be handled by the 
modules, then
why the warnings? Is it normal for modules to put out warnings during 
their
normal function? I'm used to C/C++ environments where you normally 
eliminate
any warning that appears.

Mike
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