RE: Restricting attribute content to not include a specific string

The ^ character can only be used in a context where a single character is
being matched, for example [^0-9] matches any character that isn't an ASCII
digit.

I'm willing to be corrected, but I think that this can't be done.

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

> -----Original Message-----
> From: xmlschema-dev-request@w3.org 
> [mailto:xmlschema-dev-request@w3.org] On Behalf Of Huditsch, 
> Roman (LNG-VIE)
> Sent: 20 April 2006 07:59
> To: xmlschema-dev@w3.org
> Subject: Restricting attribute content to not include a 
> specific string
> 
> 
> Hi,
> 
> I need to restrict attribute values in my Schema to not be 
> the string "unknown".
> So I declared a simple type as follows:
> 
> 	<xs:simpleType name="attrValue">
> 		<xs:restriction base="xs:string">
> 			<xs:pattern value="^(unknown)"/>
> 		</xs:restriction>
> 	</xs:simpleType>
> 
> Since I am not experienced with regular expressions I am kind 
> of stuck on the pattern value.
> Do you have any idea, how to make that restriction in the 
> most simple way?
> Thank you very much for your help.
> 
> best regards,
> Roman
>  
>