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   Re: [xml-dev] Mixed content in data-binding (Was: Re: [xml-dev] Interest

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On 7/19/05, Ronald Bourret <rpbourret@rpbourret.com> wrote:
> Will the addition of XML data types to relational databases help this
> problem, at least for data-centric schemas? It's a bit of an force-fit,
> but it seems that mixed content could be mapped to and accessed from an
> XML column when the meaning of that content is a single word, even an
> annotated one.

If you're indexing in any way (walking a Blob or shredding) then you
need some form of schema support...

> This solution won't work for data binding until programming languages
> can handle XML data as a first-order type.

As I pointed out yesterday, there's more-or-less a direct mapping
between XML mixed content "annotations" and Aspect oriented
programming annotations.  Building a mixed content data structure
isn't the problem, at this point I don't see how to generally use
schema driven parsing to populate such a structure.  It would be
straight forward populating such a beast directly via a hard coded SAX
parser.  The issue is, can you automate the building of the parser
without some form of meta-meta description?  I can't see how, and
existing Schema languages don't appear to be up to the task.

Peter Hunsberger


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