Re^2: XML::LibXML::XPathContext findnodes() Question

in reply to Re: XML::LibXML::XPathContext findnodes() Question
in thread XML::LibXML::XPathContext findnodes() Question

I'm trying to test the existence of two separate elements.
Like /root && /root/element1. I want true if both exist, false if one exists.

The xpath can certainly be much better, but this is a simplified example from an xml-grep program I am working on.
I'm trying to add the functionality to test for the existence of 2 nodes separated by ' and '. I may need to use find() or findvalue() for these types of xpaths.

Thanks for your time!

Comment on Re^2: XML::LibXML::XPathContext findnodes() Question

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Re^3: XML::LibXML::XPathContext findnodes() Question by runrig (Abbot) on Dec 19, 2008 at 23:31 UTC
If /root/element1 exists, then /root certainly exists.	[reply]
Re^3: XML::LibXML::XPathContext findnodes() Question by roman (Monk) on Dec 20, 2008 at 10:00 UTC
You should probably use `$doc->findvalue` instead of findnodes because your XPath expression doesn't return a nodeset but boolean value. `warn $doc->findvalue('/root and /root/element1'), "\n"; warn $doc->findvalue('/root and /root/nosuch'), "\n";` [download] yields: `true false` [download]	[reply] [d/l] [select]

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