Context item dependant function in a step of a path expressionPierrick Brihaye pierrick.brihaye at free.fr
Fri Aug 17 23:46:15 PDT 2007
Hi, With Saxon 8.9J, this XQuery : let $a := <A/> for $b in $a/B/string() return string-length($b) ... returns an empty sequence (0, if wrapped by count()). From http://www.w3.org/TR/xpath-functions/#func-string : > If no argument is supplied, the context item (.) is used as the > default argument. The behavior of the function if the argument is > omitted is exactly the same as if the context item had been passed as > the argument. then > If $arg is the empty sequence, the zero-length string is returned. I would thus have expected 0 as the result (1, if wrapped by count()) since I understand the context item as being "empty"... which is a concept which is not very conformant with the specs I conceed. But, maybe, the processing of a context item dependant function when there is no context item (which is not the same as being an "empty" context item and would thus be more conformant with the specs I guess) has to be skipped ; that would explain Saxon's behaviour (and make much sense BTW)... In such a case, how would such a behaviour cope with the specs ? I couldn't find anything that would answer to this question. Thank you for your answers, Cheers, p.b.
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