- From: <bugzilla@wiggum.w3.org>
- Date: Tue, 09 Sep 2008 07:58:14 +0000
- To: www-xml-schema-comments@w3.org
http://www.w3.org/Bugs/Public/show_bug.cgi?id=6043
Michael Kay <mike@saxonica.com> changed:
What |Removed |Added
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CC| |mike@saxonica.com
--- Comment #2 from Michael Kay <mike@saxonica.com> 2008-09-09 07:58:13 ---
My reaction was similar - I don't like the idea of 16 new datatypes. Chronology
already accounts for far more than its fair share of the Part 2 specification.
Perhaps though there is a case for a facet to make the timezone offset required
or disallowed. OK, it can be done using patterns, but that doesn't really
capture the semantics very well, and is impossible for applications to
recognize and treat specially.
The existence of types that recognizably require or disallow timezone
information is certainly something an XPath optimizer could take advantage of:
at present code has to be generated for the worst case, where operations
contain a mixture of values with an without timezone offsets, when in practice
the mixed case is very rare. But the existence of a facet would be enough to
provide this information, it doesn't need built-in derived types.
(personal response, of course)
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Received on Tuesday, 9 September 2008 07:58:47 UTC