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Re: transformations: xml->html works, what about xml->xml

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Wilson, James.W <xsl-list@xxxxxxxxxxxxxxxx> wrote at 9 Jul 98, 7:07:

> Sorry if I've missed it, but what would be an example of a stylesheet
> that transforms xml into xml?

Most transformations that take xml as an input format and output some 
"object oriented" format may be modelled by an xml->xml 
transformation. Simply think of xml as a formal notation for nested 
objects.

> I saw the example of one that generates html, but doesn't
> that presuppose the 'html flow objects'?
> Is there a way to specify 'xml flow objects'?

xml flow object trees are formally modelled by a DTD (James Clark).
http://www.jclark.com/jade/#backend-fot

I use to think of flow object trees as a special xml->xml 
transformation. The main difference to general transformation is the 
fact, that the target schema (xml fot) has a predefined syntax and 
semantic on how to display each element. That is just the same 
situation as with HTML. So it is not suprising that XSL uses "HTML 
element types" intermixed with the more abstract DSSSL flow objects.

	++im
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