Subject: Use of fictitious types in the F & O spec considered unsatisfactory
From: Dimitre Novatchev <dnovatchev@xxxxxxxxx>
Date: Sat, 15 Jan 2005 22:14:04 +1100
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The use of the so called "numeric" type in defining the op:numericXXX
operators in the Functions and Opertors spec results in unwanted
confusion and complexity of the document.
Firstly, it uses an undefined type.
Secondly, this results in a special rule that some "system" functions
and operators *only* can have overloads with the same number of
arguments.
The solution is obvious: define the type "numeric" and support it as a
builtin type. This is not unprecedented, as we already have such types
as xdt:anyAtomicType and xdt:untypedAtomic
I propose that there should be an xdt:numeric defined builtin type in
Xpath 2.0. This may also unify and make more simple or intuitive the
rules for conversion between different numeric types.
Cheers,
Dimitre Novatchev.
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