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What Is Type Augmentation and Should We Be Concerned? (WAS RE: [xml-dev

• To: 'Francis Norton' <francis@r...>, Eddie Robertsson <erobertsson@a...>
• Subject: What Is Type Augmentation and Should We Be Concerned? (WAS RE: Best Practice - beyond schema)
• From: "Bullard, Claude L (Len)" <clbullar@i...>
• Date: Wed, 19 Jun 2002 08:16:32 -0500
• Cc: Xml-Dev <xml-dev@l...>

And it leads back to the question:  can a PSVI or TAI/ATI 
be reduced to a transform?   Reading the www-tag discussions, 
it seems that XML may become even more complicated and 
less flexible.   Type augmentation seems to be an application 
concern, not an XML Infoset concern.  The only way I know to 
keep those distinct is to regard augmentation as transformation.

I'm leery of InfoSet primacy.  I'm not sure why, but it feels 
like an abstraction becoming an instance of something else.

len


From: Francis Norton [mailto:francis@r...]

Hi Eddie,

Eddie Robertsson wrote:

> Maybe I'm mistaken but isn't this exactly what Francis' TypeTagger [1] 
> tool does? It will parse a W3C XML Schema document and annotate the 
> elements in the instance document with the type information from the 
> schema. True, it won't annotate attributes with their types but it's 
> certainly a step in the direction of an XML form for a Typed Infoset.

Yes, you're absolutely right - which makes my original question a bit 
ironic really!

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