Hey,
On Fri, Jun 10, 2005 at 08:04:28AM +0900, MURATA Makoto wrote:
Mark,
(I do think that this topic belongs to the ietf-xml-mime ML. I am
ccing to the ietf-types but will not do so any more.)
Sounds good.
For those on ietf-xml-mime and not on ietf-types, my original
message can be found here;
http://eikenes.alvestrand.no/pipermail/ietf-types/2005-June/000817.html
I think that you have presented some requirements which are not
addressed by any of the existing mechanisms.
But I believe the security problem is just one manifestation of the
layering problem inherrent in using intrinsic dispatch (of which XML
namespace dispatch in one kind); that an extrinsic dispatch mechanism,
like media types, cleanly separates the "what" - the raw data - from
the "how" - the semantics with which that data is to be interpreted.
I do not think that media types are good enough for multi-namespace
documents and that W3C should develop something different.
I think media types are fine for multi-namespace documents. I just
think that XML, by itself, doesn't provide a sufficiently rich framework
to address the root cause of the need for an explosion of media types
with these documents.
Consider RDF/XML documents, almost all of which are comprised of data
from several independent namespaces. Yet a single media type,
application/rdf+xml, suffices for (almost[1]) all RDF/XML documents.
Although
your example can be addressed by specialized media types, my example
(schemas embedded within XHTML are referenced by XPointer) cannot.
Can you elaborate on that example please? I don't think I've seen any
schemas embedded in XHTML before.
Cheers,
[1] http://esw.w3.org/topic/RdfAndMediaTypes
Mark.
--
Mark Baker. Ottawa, Ontario, CANADA. http://www.markbaker.ca
Coactus; Web-inspired integration strategies http://www.coactus.com