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Hi,
[^N].* should work. It works for me with Xerces-J (2.4.0 and 2.2.1).
[.-[NaN]]* doesn't work because "." is just a normal character inside square
brackets.
Hope that helps,
Priscilla
> -----Original Message-----
> From: Max Chappell [mailto:max@maxxml.co.uk]
> Sent: Wednesday, February 04, 2004 10:13 AM
> To: 'xml-dev@lists.xml.org'
> Subject: [xml-dev] Fun with regular expressions
>
> Hi,
>
> 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:
> "[+\-]?(\d+(\.\d*)?([eE][+\-]?\d+)?)|([+\-]?INF)"
>
> 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?
>
> Thanks
>
> Max
>
>
>
>
>
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