RE: [xsl] XQuery 1.0 and XPath 2.0 Functions and Operators Versio n 1.0

Subject: RE: [xsl] XQuery 1.0 and XPath 2.0 Functions and Operators Versio n 1.0
From: DPawson@xxxxxxxxxxx
Date: Wed, 5 Sep 2001 10:39:51 +0100
DC wrote:
> XQuery 1.0 and XPath 2.0 Functions and Operators Version 1.0
> W3C Working Draft 27 August 2001

Couple of funnies in there David,
for example, 
3.3.3 xf:token (string)
  is this expected to 'tokenise' a string as per
saxon:tokenize(string-1, string-2?) which it appears not to follow,
or is it seperate? Not very well explained and no examples.
why else would you want a token, other than in generating element names?
 I would have preferred something equivalent to saxon:tokenize(str, str)

3.3.4 xf:language (string)
  Is this pure magic? Or will xpath2 contain all the dictionaries of the
  xf:language ('le weekend')  is that french or English? Signature
xf:ENTITY(string $srcval) => ENTITY 

I thought that entities were expanded prior to a parse, hence would not
be available to the xslt/xpath environment?

3.5 Functions on String Values
    A case insensitive version of each of many of these would be a useful
xf:contains Signature
xf:boolean-from-string(string $srcval) => boolean 
The effective value is the value returned by upper-case($srcval). 
?????? Is this not contr to xpath1? There's nothing intuitive 
about it. And why upper case?

10.2.8 xf:copy Signature
xf:copy(node $srcval) => node 

xf:shallow exists, yet this is xf:copy?
  Irregular, why not xf:deep-copy and xf:shallow-copy
to make it explicit what's happening.

11.4 Functions on Sequences
  No clear definition of what type of sequence is being
discussed. Sequence of nodes? Integers? anytype?

11.4.9 xf:sort Signature
xf:sort(anyType* $srcval, anyURI $collation) => anyType* 

For this and reverse-sort I would like to see a 
case-insensitive sort capability. Signature
xf:intersect(anyType* $parameter1, anyType* $parameter2) => anyType* 

Glad to see this one included!

11.5 I don't see a 'member' type of function.
  To answer the question is nodeX a member of node-setY ?

  Similarly a 'unique' type of function is commonly asked for,
   Return all unique members of this set, second param is
   the definition of 'unique' e.g. unique by element content
   or unique by attribute content.

Issue 67, Should duplicates be eliminated for count() and sum()?
  yes, very clearly IMHO.

Regards DaveP
************* snip here **************


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