The Microsoft schema processor (from my observations) allows very many
regular expressions that are not permitted by the XML schema =
specification.
In fact, I believe it just uses the .NET regex parser unchanged.
 
There's a long and tortuous history of errors, errata, corrections to
errata, and withdrawn errata in the area of hyphens within square =
brackets.
It's my belief that the current intent of the spec is to permit [+-], =
though
there's still a contradiction between the grammar and the text; given =
the
history, it's not at all surprising if you find products that don't =
permit
it.
 
So:
 
 (a) the fact that Microsoft accept it proves nothing, 
 
 (b) [+-] should be OK, 
 
 (c) it's not surprising if some (especially older) products reject it 
 
 (d) [+\-] should be safe.
 
Michael Kay
http://www.saxonica.com/


  _____  

From: xmlschema-dev-request@w... [mailto:xmlschema-dev-request@w...] =
On
Behalf Of Rao,Dr.,R.,SNL IT Filialen,4110,DA
Sent: 05 June 2007 11:50
To: xmlschema-dev@w...
Subject: RegEx [+\-] or [+-]?



The regEx below make restrictions on the UTC-Offset in the datetime data
type.

We found out that the expression 1 makes no problem with the Microsoft
parser (.net 2.0).

A third party which receives data from us, uses Java and have problems =
with
1. They would like the expression 2.

 

1: <xs:pattern
value="\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d([+-](0[0-9]|1[0-2]):00|[+-](03|09=
):30|
[+](13|14):00|[+](04|05|06|10|11):30|[-]08:30)"/>

2: <xs:pattern
value="\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d([+\-](0[0-9]|1[0-2]):00|[+\-](03|=
09):3
0|[+](13|14):00|[+](04|05|06|10|11):30|[\-]08:30)"/>

 

 

Which is the recommended expression?

 

Thanks,  Roberto

 

Dr. Roberto Rao 
Deutsche Post AG 

SNL IT FILIALEN
4110-5 / Architektur 
Poststra=DFe 4-6, Raum B 03a
64293 Darmstadt 

 

Tel: (0 61 51) 9 07 31 18 

Fax: (0 61 51) 3 90 94 10 01 
Mobil: (0170) 9 27 06 87 
E-Mail:  <mailto:R.Rao@D...> mailto:R.Rao@D...

 

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