- From: Michael Kay <mike@saxonica.com>
- Date: Thu, 30 Jul 2009 17:46:37 +0100
- To: "'Kevin Braun'" <kbraun@obj-sys.com>, "'Costello, Roger L.'" <costello@mitre.org>
- Cc: <xmlschema-dev@w3.org>
> >
> > Are these equivalent:
> >
> > 2009-07-29T24:00:00-6:00
> > 2009-07-30T00:00:00-6:00
> >
They are two different lexical representations of the same xs:dateTime
value. (Just as "1" and "true" are different lexical representations of the
same boolean). So, once converted into the value space, the values they
represent are both identical and equal.
More of a problem is that 00:00:00 and 24:00:00 are also different lexical
representations of the same xs:time value, which means that in XPath you get
counter-intuitive results for xs:time('24:00:00Z') > xs:time('23:59:59Z').
Kevin Braun> > 24 isn't a valid hour (see part 2, D.2.1)
D.2.1 (of XSD 1.1 part 2) is discussing the value space, not the lexical
space.
Regards,
Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay
Received on Thursday, 30 July 2009 16:47:19 UTC