Donal K. Fellows wrote:
Thomas Soddemann wrote:
I guess the XSD Spec is a little vague here. They state that for the element "duration" ISO8601 is applied which also allows the kind of durations you refer to as time periods, but their examples are only in the [-]P... format.
Both of these references: http://www.w3schools.com/schema/schema_dtypes_date.asp http://books.xmlschemata.org/relaxng/ch19-77073.html state that xsd:duration is to use the [-]P... format, as does the core spec at: http://www.w3.org/TR/REC-xmlschema-2/#duration It's in the first paragraph of section 3.2.6.1.
Donal. -- ur-wg mailing list ur-wg@ogf.org http://www.ogf.org/mailman/listinfo/ur-wg
Yep, that's what I meant. ISO 8601 defines durations plus the optional reference date. In the spec http://www.w3.org/TR/REC-xmlschema-2/#duration it is defined that the duration is in the format of ISO8601 which would allow to specify that optional date in front of the [-]P. But a discussion on if the XSD spec is precise enough or not does not cover Bart's point. Anyway, I agree with you, that the format [-]P... allows to express a duration in a very precise way, which should cover all or at least most of the requirements of implementors. Thomas -- -------------------------------------------------- Dr. Thomas Soddemann | Boltzmannstrasse 2 Projects Engineer | 85748 Garching Rechenzentrum der MPG | Germany am MPI fuer Plasmaphysik | --------------------------------------------------- phone: +49 89 3299 2694 | fax: +49 89 3299 1301 ---------------------------------------------------