RE: [xml-dev] RE: Word of the day: upconversion

From
Michael Kay <>
To
"'Costello, Roger L.'" <>,
Date
2009-08-21T19:49:23Z
ID
<A4D80881D60D45DDBBB0B5CBD8232460@Sealion>
Thread
RE: [xml-dev] RE: Word of the day: upconversion
> 
> If you're doing upconversion, would you upconvert this XML:
> 
>     <enumeration value="red" />
>     <enumeration value="green" />
>     <enumeration value="blue" />
> 
> to this XPath:
> 
>     (. eq 'red') or (. eq 'green') or (. eq 'blue')
> 
> or vice versa?
> 
> Is the XML richer in structure and information or is the XPath?
> 

Neither. One format is more convenient for some consumers, the other for
other consumers.

This isn't what upconversion is about. The following would be an
upconversion:

a+b*c  =>  a+(b*c)

because it has replaced external knowledge of the rules governing the
structure (that is, operator precedences) by explicit representation of the
structure.

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay