Re: [xsl] [XSLT 2.0] Checking that an element's value has the desired datatype?

[Abel Braaksma <abel.online@xxxxxxxxx>]

Costello, Roger L. wrote:
> > > Can you think of a value for the Altitude 
> > > element that the XSLT template would reject, but a schema 
> > > validator would accept?
>
> > Yes. "   23   "
>
> Good catch!  The XSLT expression should be: 
>
>       matches(flt:Aircraft/flt:Altitude, '^\s*[+\-]?[0-9]+\s$')
You do not need the backslash for the minus sign (end/beginning char 
class), and I am sure you would want to allow for no spaces at the end. 
Perhaps this is a little easier to read:

'^\s*[+-]?\d+\s*$'


What about numeric values expressed in exponentional notation? These are 
(with a side step to xs:double) easily castable as integer. Of course, 
that should only apply to values that have no decimals (not sure of 
reqs). If you need it, you can expand your expression so:

matches(flt:Aircraft/flt:Altitude, '^\s*[+-]?\d+([eE]+?\d+)?\s*$')

-- Abel Braaksma