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Re: XML::Lib XML question

by ikegami (Pope)
on Oct 22, 2009 at 08:31 UTC ( #802691=note: print w/replies, xml ) Need Help??

in reply to XML::Lib XML question

Regarding your update...

The query is a simple /yyy

There is no {}yyy element at the root (or anywhere else in your XML document), so LibXML is correct in returning nothing.

You want to match the {http://xxx}yyy element, so you need to use

my $parser = XML::LibXML->new(); my $doc = $parser->parse_file($file_name); my $root = $doc->documentElement(); my $xpc = XML::LibXML::XPathContext->new(); $xpc->registerNs( xxx => 'http://xxx' ); for my $node ( $xpc->findnodes('/xxx:xxx/xxx:yyy', $root) ) { ... }

As I mentioned earlier, this is documented in XML::LibXML::Node, under findnodes, under "NOTE ON NAMESPACES AND XPATH".

"xxx" can be replaced with any identifier you wish, as long as you use what you pass to registerNS in your queries.

Update: I had forgotten the include the root node in the XPath. Fixed.

Replies are listed 'Best First'.
Re^2: XML::Lib XML question
by weismat (Friar) on Oct 22, 2009 at 08:47 UTC
    It works now - thanks a million. I will add a reference to this node into the tutorial - I guess I am not the only one falling into this pitfall.

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