xml with namespace not getting parsed in perl

Question

I have an xml with default namespace something like this:

<?xml version="1.0" encoding="utf-8"?>
<start xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xsi:schemaLocation="http://127.0.0.1 GrammarXSD.xsd" version="01.00" xmlns="GrammarXSD.xsd">
    <DataModel>
        #rest of the xml
    </DataModel>
</start>

To parse this xml, I am trying to register the namespace using the following code:

my $file = "xml file location";
my $dom = XML::LibXML->load_xml(location => $file);
my $xpc = XML::LibXML::XPathContext->new($dom->documentElement());
$xpc->registerNs('ns',  'GrammarXSD.xsd');
my $b = $dom->findnodes('//ns:DataModel');

However this is not finding the DataModel nodes as expected. The GrammarXSD.xsd file is in the same location as the xml.

What am I missing here?

You might find the examples here useful.

Grant McLean
– Grant McLean

2017-11-12 20:49:24 +00:00
Commented Nov 12, 2017 at 20:49 — Grant McLean
– Grant McLean, Commented Nov 12, 2017 at 20:49

choroba · Accepted Answer · 2017-11-11 11:05:58Z

4

You have to use the XPathContext object to search for nodes in a namespace-aware way:

my $data_models = $xpc->findnodes('//ns:DataModel', $dom);

BTW, don't use my $b, $b is a special variable used in sort and declaring it as lexical can cause bugs if sort is used later in the same scope.

Also, the namespace URI doesn't mean anything, it just identifies the namespace.

answered Nov 11, 2017 at 11:05

choroba

245k27 gold badges221 silver badges304 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

xml with namespace not getting parsed in perl

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related