Jabber XMPP and XML::Simple conflict

BaldPenguin has asked for the wisdom of the Perl Monks concerning the following question:

I have long thought that Simple Modules should only be used for simple tasks, and since I normally do way too much with my xml, I have stuck with XML::Twig and XML::LibXML for the majority of my XML work. However in the case of using XML for an application config, this is what XML::Simple excels at.

In writing a bot for a jabber server, I have come across an error that I have yet to figure out. I have no problems getting the xml to parse until I use the POE::Component::Jabber::Client::XMPP module. Once I use the module and run, I get the error The only thing I know how to parse is a string. You have to fetch the data for me yourself. at /usr/lib/perl5/vendor_perl/5.8.5/XML/Simple.pm line 287. Thinking that that meant I needed to read the file into a string first, I tried that, and got the same error.

Using this simple XML file:

<?xml version ="1.0"?>
<config>
    <version>0.1</version>
    <application>
        <hostname>testme.com</hostname>
        <user>monk</user>
        <password>pass</password>
    </application>
</config>
[download]

and this script:

use POE::Preprocessor;
const XNode POE::Filter::XML::Node

use strict;
use warnings;

use POE qw/ Component::Jabber::Client::XMPP Component::Jabber::Error /
+;
use POE::Filter::XML::Node;
use POE::Filter::XML::NS qw/ :JABBER :IQ /;
use List::Util qw/ shuffle /;
use XML::Simple;

my $config = XMLin('test.xml');

use Data::Dumper();
warn Data::Dumper::Dumper( $config );

exit(0);
[download]

I can repro the error. If I remove the 'Component::Jabber::Client::XMPP' part, the XML parses, but then my bot wouldn't work.

Has anyone run accross this and overcome the problem?

Also, I tried switching over to the Legacy module in place of the XMPP, and got the same error.

Don
WHITEPAGES.COM | INC
Everything I've learned in life can be summed up in a small perl script!

Comment on Jabber XMPP and XML::Simple conflict Select or Download Code

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Re: Jabber XMPP and XML::Simple conflict by bmann (Priest) on Aug 17, 2005 at 19:08 UTC
XML::Simple uses a SAX parser by default, if available. I found that exact error message in XML::SAX::Expat::Incremental. Try setting PREFERRED_PARSER, ie: `$XML::Simple::PREFERRED_PARSER = 'XML::Parser';` [download] to prevent XML::Simple from using SAX, see if that clears it up...	[reply] [d/l]
Re^2: Jabber XMPP and XML::Simple conflict by BaldPenguin (Friar) on Aug 17, 2005 at 19:16 UTC
That was the answer, thank you! Don WHITEPAGES.COM \| INC Everything I've learned in life can be summed up in a small perl script!	[reply]
Re^3: Jabber XMPP and XML::Simple conflict by grantm (Parson) on Aug 19, 2005 at 23:07 UTC
The most recent version of XML::SAX::Expat::Incremental does not register itself in XML/SAX/ParserDetails.ini. If you edit that file and remove the offending section then XML::Simple will work with SAX parsers too.	[reply]