additional duration types

The XSL and XML Query WGs have asked me to obtain feedback from the
XForms WG (and other WGs) on a possible technical change to the XQuery
1.0 and XPath 2.0 Functions and Operators Last Call Working Draft [1].

 

This possible change is outlined in the Status section of the Last Call
WD.  I repeat the text here:

"A proposal related to the two totally ordered subtypes of xs:duration,
xdt:yearMonthDuration and xs:dayTimeDuration has been received. See
http://lists.w3.org/Archives/Public/public-qt-comments/2003Sep/0114.html
.

This proposal argues that since the value space for these datatypes is
integer months and decimal seconds respectively, these datatypes should
be removed and functions that work with these datatypes should be
removed and replaced by functions on numeric types. An alternative is to
retain the datatypes but remove the functions and provide casting
facilities for these datatypes to and from numbers.

This is a far-reaching proposal and the Working Groups felt that its
consideration should be postponed until after this document was
published. This note is to alert readers that such a change may appear
in future versions of this document."

Given that the XForms Recommendation [2] defines its own types similar
to the yearMonthDuration and dayTimeDuration,  we are interested in your
views on the proposal in [3].  

You can supply this feedback by replying to this message or to [3] in
the public QT comments list.  Please note that the Last Call period ends
on Feb 15, 2004.

/paulc

Chair, XML Query WG

 

[1] http://www.w3.org/TR/2003/WD-xpath-functions-20031112/ 

[2]
<http://www.w3.org/TR/2003/REC-xforms-20031014/slice5.html#datatypes-sch
ema>
http://www.w3.org/TR/2003/REC-xforms-20031014/slice5.html#datatypes-sche
ma 

[3]
<http://lists.w3.org/Archives/Public/public-qt-comments/2003Sep/0114.htm
l>
http://lists.w3.org/Archives/Public/public-qt-comments/2003Sep/0114.html
.

 

 

Paul Cotton, Microsoft Canada 

17 Eleanor Drive, Nepean, Ontario K2E 6A3 

Tel: (613) 225-5445 Fax: (425) 936-7329 

mailto:pcotton@microsoft.com