[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Beware of XPath expressions that produce false positives
Hi Roger, <quote> Okay, I added namespace::* to the XPath that David provided, to take into account namespaces. Here is the new XPath: empty((node(),@*,namespace::*)
Here are the results I got from running my XSLT program using the new XPath:
Perfect! </quote> I am wondering what combination of parser/xslt-processor you were using... Because the XPath expression: empty((node(),@*,namespace::*) should produce false in all cases. The reason? every element has at least two namespace nodes -- the xml namespace and the xml-namespace namespace nodes. And, indeed, this is exactly what I am getting using Saxon 9.1. A correct XPath expression is this: empty( ( node(), @*, namespace::*[not(name() = ('xml', 'xmlns'))] ) ) Here I assume that the XML parser will raise an error in case the reserved prefixes "xml" and "xmlns" are rebound to other namespace URIs. Cheers, Dimitre On Sat, Sep 24, 2016 at 2:02 PM, Costello, Roger L. <costello@mitre.org> wrote:
-- Cheers, Dimitre Novatchev --------------------------------------- Truly great madness cannot be achieved without significant intelligence. --------------------------------------- To invent, you need a good imagination and a pile of junk ------------------------------------- Never fight an inanimate object ------------------------------------- To avoid situations in which you might make mistakes may be the biggest mistake of all ------------------------------------ Quality means doing it right when no one is looking. ------------------------------------- You've achieved success in your field when you don't know whether what you're doing is work or play ------------------------------------- To achieve the impossible dream, try going to sleep. ------------------------------------- Facts do not cease to exist because they are ignored. ------------------------------------- Typing monkeys will write all Shakespeare's works in 200yrs.Will they write all patents, too? :) ------------------------------------- Sanity is madness put to good use. ------------------------------------- I finally figured out the only reason to be alive is to enjoy it.
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