- From: <noah_mendelsohn@us.ibm.com>
- Date: Mon, 17 Jul 2006 17:09:09 -0400
- To: "Michael Kay" <mike@saxonica.com>
- Cc: "'Pierre Attar'" <pat@tireme.fr>, xmlschema-dev@w3c.org
Mike Kay writes: > I suspect you've hit one of the cases where the algorithm in > the spec fails to allow restrictions that in fact make perfect sense. Note that there is an excellent chance that Schema 1.1 will be revised to allow such seamingly sensible restrictions. Basically, what's changed since Schema 1.0 and Schema 1.1 is that enough smart people have worked through the algorithms to the point where we think we can safely say: "if the the restricted content model allows no instances (specifically no lists of elements to be matched by the content model) disallowed by the base, then it's legal". In the 1.0 timeframe, we knew that's what we wanted, but weren't sure it was a practical check for processor builders to implement, given the specific features of our content models. So, look for that as a likely change in 1.1. -------------------------------------- Noah Mendelsohn IBM Corporation One Rogers Street Cambridge, MA 02142 1-617-693-4036 --------------------------------------
Received on Monday, 17 July 2006 21:09:20 UTC