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Re: draft of LC comment to XML Schema WG

From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
Date: Mon, 04 Aug 2008 11:35:12 -0400 (EDT)
Message-Id: <20080804.113512.10031012.pfps@research.bell-labs.com>
To: schneid@fzi.de
Cc: public-owl-wg@w3.org

From: "Michael Schneider" <schneid@fzi.de>
Subject: RE: draft of LC comment to XML Schema WG
Date: Mon, 4 Aug 2008 17:07:50 +0200

> Peter F. Patel-Schneider wrote:
> >> the comparison between two dateTimes without a timezone 
> >> should always lead to the same result for both XSD and OWL,
> >> or do I overlook something here?
> >
> >Yes.  If a tool "repairs" dateTime values without a timezone by putting
> >in a local timezone, then two dateTime values that are identical
> >according to XML Schema datatypes may end up being unequal (because they
> >receive different timezone values).
> I just wonder why a tool would add *different* timezones when comparing two
> dateTimes without timezones.

If the tool is taking information from multiple sources (that may be in
different time zones) then it could easily be the case that it would
(and should) use different timezone values.

> But, well, if nothing is spec'ed, a tool can, of course, do whatever it
> wants.
> Cheers,
> Michael

Received on Monday, 4 August 2008 15:41:54 UTC

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