OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help



   Fun with regular expressions

[ Lists Home | Date Index | Thread Index ]


I need to restrict xs:double to any allowable double value - with the 
exception of NaN.

Having looked further into regular expressions for XML Schema - there 
seems to be contradictory advice around.

Following one set of advice would allow us to use ^ at the start of the 
reg exp to exclude NaN:
"[^N].*"  - this doesn't work with either Xerces or XML Spy.
I find the relevant section of the W3C spec somewhat difficult to 
decipher. However, I get the impression that ^ is simply a normal 
character in xsd land..

Another piece of advice is to use nested brackets such as: 
"[a-zA-Z-[ABC]]" (Use any letters except AB or C).
Along these lines I've tried:
"[.-[NaN]]*" - far from working...
and "[.*-[NaN]]*" - ditto... 

So then, the next option is to define a larger regular expression such as:

This does not allow .00009 for example, so we'll have to make the reg 
exp even more complicated.

My question is:
Does anyone know of a simpler way of doing this?




News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 2001 XML.org. This site is hosted by OASIS