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Paul Prescod <paul@prescod.net> writes:
> Henry S. Thompson" wrote:
> >
> >...
> >
> > That was certainly the goal. If you _do_ depend only required
> > sub-parts/attributes, and _don't_ access sub-parts by working backwards
> > from the end, you will always win regardless of xsi:type.
>
> Is it that simple? What if I have a content model like
>
> <!ELEMENT a (b,c)+> (but expressed in XML Schema!)
>
> Can someone extend it:
>
> <!ELEMENT a' ((b,c)+,c,b)>
Yes.
> If so, that could really confuse most element-triggered processing
> specifications.
Not sure what you mean. This is a difficult case to start with (it's
DT/DD under another name, a well-known pain for XPath). But if I
tackle it in the usual way, i.e. by recursion over the nodelist
picking of b+c pairs, it will work just fine, i.e. stop after the b+c
pairs run out, ignoring the new material.
Which, I should clarify, is what I take it the MNTDV is -- processes
designed to work with the unextended type should work with instances
of the extended type just as they would have if the extra material
wasn't there.
ht
--
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
W3C Fellow 1999--2002, part-time member of W3C Team
2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk
URL: http://www.ltg.ed.ac.uk/~ht/
[mail really from me _always_ has this .sig -- mail without it is forged spam]
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