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RE: A standard approach to glueing together reusableXM L fra

• To: 'Jeff Tash' <tash@f...>, xml-dev@l...
• Subject: RE: A standard approach to glueing together reusableXM L fragments in prose?
• From: "Bullard, Claude L (Len)" <clbullar@i...>
• Date: Thu, 28 Aug 2003 09:11:13 -0500

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• To: 'Jeff Tash' <tash@f...>, xml-dev@l...
• Subject: RE: A standard approach to glueing together reusableXM L fragments in prose?
• From: "Bullard, Claude L (Len)" <clbullar@i...>
• Date: Thu, 28 Aug 2003 09:11:13 -0500

Not exactly.   One has to decide when mapping out of an information system
of a different 
type using XML which properties one must preserve losslessly, and then the
choice of 
elements vs attributes is not arbitrary.  I gave an example of that in a
different email 
when comparing object oriented design where fields can have objects to XML
design 
where attributes cannot have elements.  At first, these appear to be
incompatible, then 
pushing the containment relationship of fields and objects to the elements
and the 
description up one metalevel,
<object><field><object></object></field></object>, 
one can make it work.  Going in the other direction and keeping the mapping 
of fields to elements introduces microparsing and hiding types inside the 
attribute values.  It is semantically messy, but that is the choice some
make 
to keep the XML encoding looking as much like the object oriented encoding 
as possible.
 
Loose, yes, but not arbitrary.  One does have to understand, for example,
the 
structural constraints of XML.
 
len

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