Re: Comparing possibly empty string sequences
Thanks Ken & Martin! I'm still digging into XPath & XSLT 2.0 :) On Tue, Mar 23, 2010 at 3:57 PM, G. Ken Holman <gkholman@xxxxxxxxxxxxxxxxxxxx> wrote: > Ouch! Of course I should have written: > > as="xsd:string*" > > and not select= as I was thinking about the constraints but typing out of > habit. Too distracted today. > > . . . . . . . . . . Ken > > At 2010-03-23 15:51 +0100, G. Ken Holman wrote: >> >> At 2010-03-23 15:47 +0100, Martynas Jusevicius wrote: >>> >>> a question somewhat related to my previous one. >>> Say I have $classes, a sequence of classnames (strings), possibly empty. >> >> Fine ... cardinality 0 to many. >> >>> Now I want to select elements which @class attribute contains any of >>> the classnames from $class: >>> h:*[@class/tokenize(., '\s+') = $break-classes)] >>> >>> In other words, select elements where tokenized @class intersects with >>> $class. >>> >>> It works fine unless $classes is an empty sequence, in which case I >>> get an error: >>> "XTTE0570: An empty sequence is not allowed as the value of variable >>> $classes" >> >> That is a declaration problem, not an executon problem. You don't show >> your declaration for $classes, but I'm assuming the declaration does not >> accommodate a cardinality of zero. >> >> If it is: >> >> <xsl:variable name="classes" select="xsd:string+"... >> >> ... then change it to: >> >> <xsl:variable name="classes" select="xsd:string*"... >> >> I hope this helps. >> >> . . . . . . . . . Ken > > > -- > XSLT/XQuery training: San Carlos, California 2010-04-26/30 > Principles of XSLT for XQuery Writers: San Francisco,CA 2010-05-03 > XSLT/XQuery training: Ottawa, Canada 2010-05-10/14 > XSLT/XQuery/UBL/Code List training: Trondheim,Norway 2010-06-02/11 > Vote for your XML training: http://www.CraneSoftwrights.com/s/i/ > Crane Softwrights Ltd. http://www.CraneSoftwrights.com/s/ > G. Ken Holman mailto:gkholman@xxxxxxxxxxxxxxxxxxxx > Male Cancer Awareness Nov'07 http://www.CraneSoftwrights.com/s/bc > Legal business disclaimers: http://www.CraneSoftwrights.com/legal
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