Hi,

 

Given this XML document (in file example.xml):

 

<p xmlns="http://example.com/one" xml:lang="de" author="Friedrich von Schiller">
Freude, schöner Götterfunken,<br/>
Tochter aus Elysium,<br/>
Wir betreten feuertrunken,<br/>
Himmlische, dein Heiligtum.</p>

 

This XQuery expression (in file TesQNametExpression.xquery, in the same directory):

 

let $doc := doc('example.xml')
  return
    string-length($doc/Q{http://example.com/one}p[1]/@Q{http://www.w3.org/XML/1998/namespace}lang)

 

 

produces:

 

0

 

 

However the correct result (which I get with Saxon 9.5.01) is:

 

1

 

 

Here is the "Query Info" from the BaseX UI:

 

Compiling:
- pre-evaluating fn:doc("example.xml")
- binding static variable $doc
- removing unknown element/attribute Q{http://example.com/one}p
- pre-evaluating fn:string-length(())
- removing variable $doc
- simplifying flwor expression
Query:
let $doc := doc('example.xml') return string-length($doc/Q{http://example.com/one}p[1]/@Q{http://www.w3.org/XML/1998/namespace}lang)
Optimized Query:
0

 

Hope that this information would be useful for identifying and fixing the issue.

--

Cheers,

Dimitre Novatchev

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