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Re: [xsl] XPath expression for checking that an xs:duration value is not negative?

2011-04-23 12:31:54
On 23/04/2011 18:11, David Carlisle wrote:
On 23/04/2011 15:49, Brandon Ibach wrote:
 wouldn't it be sufficient to just
check for the leading minus sign?

yes thought about that afterwords, although hadn't checked if multiple - were allowed. You might need to remove white space first eg with normalize-space)


I think checking for a leading "-" sign (after removing leading whitespace) should do the job. But it's safest to cast explicitly to a string first, since we aren't told whether the <duration> element is typed or untyped.

Michael Kay
Saxonica



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