RE: namespace usage as assertions

Frank Manola wrote,
> For example, if userA says 
> 
> xmlns:x="http://foo"
>
> and then says
>
> <x:Title>
>
> there isn't necessarily a way to independently verify that 
> there really is such a namespace that includes the name 
> "Title".  All you may be able to know is that the user has 
> made that assertion.  

Not so. We know apriori that the namespace exists, and that
it contains that name. We know this because the Namespaces
REC allows every unique identifier to be a namespace name
(in particular 'http://foo/') and because every namespace
is a scope which contains every possible legal XML name (in
particular 'Title').

That's all there is to it ... there's nothing else which would
qualify as independent verification.

Cheers,


Miles

-- 
Miles Sabin                       Cromwell Media
Internet Systems Architect        5/6 Glenthorne Mews
+44 (0)20 8817 4030               London, W6 0LJ, England
msabin@cromwellmedia.com          http://www.cromwellmedia.com/