I outputted the value of the @ and variable to another variable and in both
cases it contains a value. Then when I do the same but also add the called
template to the sequence and cast the variable or @ as xs:integer the process
fails and outputs the error message. I've now added a test if the @cols exists
and it runs in the first instance but not in the second. But after David
suggested using xs:integer(@cols) everything worked fine. Is there something you
were looking for in particular?
MM
Quoting Michael Kay <mike(_at_)saxonica(_dot_)com>:
I'm using Saxon 8, and get the following error msg:
Fatal Error! An empty sequence is not allowed as the value in
'cast as' expression
I know that the value is not empty but a whole number.
Note that the two expressions
(a) $x cast as xs:integer
(b) xs:integer($x)
are almost synonyms, except that if $x is an empty sequence, (a) will fail
with the error message you reported, while (b) will succeed, returning an
empty sequence.
If the Saxon message says that the value is an empty sequence and you think
it isn't, then you'll need to provide some evidence for your belief.
Michael Kay
http://www.saxonica.com/
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