OK, so I looked at XML::Twig, and it looks like it should do what I need. My problem is, when I use the XPaths I'm being provided, I get errors.. for example running this against my example XML file. 

#!/usr/opt/perl5/bin/perl -sw

use XML::Twig;
my $twig = XML::Twig->new();
$twig->parsefile($xmlfile);
my $root = $twig->root;
foreach my $i ($root->get_xpath('substring(//OLifE/Party[@id=//OLifE/R
+elation[RelationRoleCode/@tc=8]/@RelatedObjectID]/Person/First
Name, 1, 30)')) {
   print $i->{att}->{InvType};
   foreach my $j ($i->get_xpath('../InvCounts/InvCount')) {
      print " " . $j->{att}->{Count};
   }
   print "\n";
}

[download]

the result is this 

./twigs.pl -xmlfile=a2b9f375-51fe-41a1-86ab-069561517890.xml
error in xpath expression substring(//OLifE/Party[@id=//OLifE/Relation
+[RelationRoleCode/@tc=8]/@RelatedObjectID]/Person/FirstName, 1, 30) a
+round substring(//OLifE/Party[@id=//OLifE/Relation[RelationRoleCode/@
+tc=8]/@RelatedObjectID]/Person/FirstName, 1, 30) at ./twigs.pl line 7

[download]

So, I guess I don't understand how I would use the XPaths I've been provided. Do I have to find the attributes they referecne first, and then substitute that into the related entry in the XPath?

In reply to Re^2: Xpath value query by SDwerner
in thread Xpath value query by Anonymous Monk

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