- From: David Orchard <dorchard@bea.com>
- Date: Wed, 6 Apr 2005 09:10:09 -0700
- To: "Robin Berjon" <robin.berjon@expway.fr>, <noah_mendelsohn@us.ibm.com>
- Cc: <www-tag@w3.org>
Robin, I certainly intend to add NVDL to the finding. I think it's really important and useful technology. And I further think it deserves more uptake in the industry. Cheers, dave > -----Original Message----- > From: www-tag-request@w3.org [mailto:www-tag-request@w3.org] On Behalf Of > Robin Berjon > Sent: Tuesday, April 05, 2005 7:54 AM > To: noah_mendelsohn@us.ibm.com > Cc: www-tag@w3.org > Subject: Re: XML validity and namespaces > > > noah_mendelsohn@us.ibm.com wrote: > > Robin Berjon writes: > >>And is it not one of the greatest ironies of XML > >>Schema that it failed to learn from that lesson > >>and therefore didn't provide simple and > >>straightforward means to describe extensibility in > >>schemata? > > > > It is indeed, though to be fair, there was and to some degree still is a > > great deal of disagreement as to what evolution strategies people wanted > > to use for their instances. The job of schema is to make it easy to > > describe evolving constraints on those instances, and the community was > > nowhere near consensus on what idioms were to be described. > > Yes, it was not my intention to point fingers, just to underline the > fact that we seem to have carried that precise irony of extensibility > (or lack thereof) much farther into the XML architecture than just DTDs. > > Have you given thought to NVDL (fka NRL) in that context? I don't > remember seeing any mention of it in the draft E&V finding (and can't > seem to find any). I've been using it to specify that SVG accepted > foreign namespaces anywhere and a few other such rules without having to > put a single wildcard in the SVG schema. It doesn't solve every single > extensibility issue out there, but it certainly helps a lot. It felt > like the X was back in XML for the first time in a long while. > > -- > Robin Berjon > Research Scientist > Expway, http://expway.com/ > > >
Received on Wednesday, 6 April 2005 16:10:16 UTC