Re: Escher could have drawn it (Re: XML Schema and Entities)

[Eric van der Vlist <vdv@dyomedea.com>]

David Brownell wrote:
> 
> > First came XPath.
> > Then XPointer thought it wise to use XPath.
> > Then XInclude decided to rely on (a slightly extended version of) XPath.
> > Then W3C XML Schema came out with its datatypes.
> > Then XPath saw all the benefit of relying on W3C XML Schema datatypes.
> >
> > So far so good, except that XInclude and W3C XML Schema need now both to
> > be processed first...
> 
> That's a good reason to avoid XIncluding URIs with fragment IDs, yes?

Yes... unless these IDs are defined in a DTD!

> So you don't head down the XPath loop. (XInclude uses XPointer in
> such cases, which is what defines the extended XPath.)
> 
> http://www.w3.org/XML/2001/07/XMLPM.html
> 
>     "However, the relationship among all of these W3C specifications is
>     unspecified -- in particular the sequence in which the infoset-to-infoset
>     transformations may or must be performed."
> 
> So there's a workshop to start fixing such holes (next month).  One hopes
> that the fix still facilitates significant amounts of work being done by stream
> transforms.  CPP has done #includes as stream operations for decades,
> and I'm not sure I see why doing it in XML ought to be different.

I'd like to be under the table ;=) .

Thanks for the pointer.

Eric

> - Dave

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Eric van der Vlist       http://xmlfr.org            http://dyomedea.com
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