Hi experts,
We ran into an error that made me think about the idea of mixed data types in
sequences. Take this instance:
<?xml version="1.0" encoding="UTF-8"?>
<bars>
<bar foo="x"/>
<bar/>
</bars>
We need to process all <bar> and want to have a default value if @foo is not
present. When trying this XPath:
for $i in //bar/(@foo, 'no-foo')[1] return $i
we get the error "XPath failed due to: Cannot mix nodes and atomic values in
the result of a path expression"
When building the XPath the following way it runs fine and creates a sequence
of an attribute and a string:
for $b in //bar return for $i in $b/(@foo, 'no-foo')[1] return $i
What is the difference? Did I miss something in the specification?
Thanks,
- Michael
(Tested with Saxon 9.2/Kernow, 9.6/OxygenXML)
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