Hi I am getting error while running perl script "can't call method "findnodes" on an undefined value at c:\work\pm.line 17".My script as shown below.

#!/usr/bin/perl
use warnings;
use strict;
use XML::LibXML;
my @xml_files = File::Find::Rule->file->maxdepth(1)->name('*dtc.xml')-
+>in( "c:/file/save");
my $bigXML = XML::LibXML::Document->new( '1.0', 'UTF-8');
my $aggregated; for my $xml_file ( @xml_files ) {

my $doc = XML::LibXML->new->parse_file( $xml_file );

my ( $specNode ) = $doc->findnodes( '//Specification' );

if ( $aggregated ) {
    $aggregated = $specNode;
}
else {
    my @details = $specNode->findnodes( './Definition' );
    $aggregated->addChild( $_ ) foreach @details;
}
}
$bigXML->adoptNode( $aggregated ); 
$bigXML->toFile( 'aggregated_data.xml' );

[download]

I Modified above code like that and this time it gives diffrent error like "XML::LibXML::Document::adoptNode()--node is not a blessed SV reference at c:\work\pm.line 17 " help me with this error I didn't see this type of error befor.

In reply to can't call method on an undefined error in perl script by veerubiji

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.