Ah! To answer our question according to the w3c XML Schema on datatypes:
the difference is that the zero-argument version of string-length() used in
the simple map operation casts the item to string() before taking its
string-length. When this happens, the lexical form is defined in a
canonicalized way (so that's why 005 gets measured as "5" with a
string-length of 1.
We are further enlightened. :-)
Elisa
On Fri, Jun 7, 2019 at 5:52 PM Elisa Beshero-Bondar
ebbondar(_at_)gmail(_dot_)com <
xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
Dear XSL list,
We are perplexed by a discrepancy between applying the string-length()
function directly to a numerical argument and using simple map to perform
what we expected would be the same operation. string-length(5) returns an
error, as expected. oXygen reports: "XPath failed due to: Required item
type of first argument of fn:string-length() is xs:string; supplied
expression (5) has item type xs:integer". eXist-db reports: "xs-integer(5)
is not a sub-type of xs-string".
When we use simple map, though, the behavior is different:
5 ! string-length() returns a string-length of 1
05 ! string-length() returns a string-length of 2
0.5 ! string-length() returns a string-length of 3
00.5 ! string-length returns a string-length of 3
05 ! string-length() returns a string-length of 1
Can someone please explain why simple-map does not raise the type error
that we see when we write the numerical argument directly inside the
function parentheses?
Thanks for your help!
Elisa
--
Elisa Beshero-Bondar, PhD
Associate Professor of English
University of Pittsburgh at Greensburg
Humanities Division
150 Finoli Drive
Greensburg, PA 15601 USA
E-mail: ebb8(_at_)pitt(_dot_)edu
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Elisa Beshero-Bondar, PhD
Director, Center for the Digital Text | Associate Professor of English
University of Pittsburgh at Greensburg | Humanities Division
150 Finoli Drive
Greensburg, PA 15601 USA
E-mail: ebb8(_at_)pitt(_dot_)edu <ebb8(_at_)pitt(_dot_)edu>
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