RE: [xsl] error in XSL file when using JAXP

["Michael Kay" <mike@xxxxxxxxxxxx>]

test="distinct-values($aVal[for $a in .
return normalize-space($oVal)[contains(lower-case(.),lower-case($a))]])

I think you're trying to test whether at least one of the values in $aVal
satisfies some condition.

Firstly, I can't see why you're removing duplicates. If some $x in
distinct-values(X) satisfies a condition, then some $x in X must satisfy the
condition, so removing duplicates is unnecessary work.

So this reduces to 

test="exists($aVal[for $a in .
return normalize-space($oVal)[contains(lower-case(.),lower-case($a))]])

But this is still fishy. normalize-space() returns either a string or
nothing (an empty sequence). So it's an odd thing to apply a predicate to. I
think this reduces to

test="exists($aVal[contains(lower-case(normalize-space(.)),
lower-case($a))])"

or if you prefer

test="some $v in $aVal satisfies contains(lower-case(normalize-space($v)),
lower-case($a))"

This isn't precisely equivalent to the meaning of your expression under the
earlier version of the spec, but I suspect it's what you intended. For
example if distinct-values returns a single zero-length string then the EBV
is false, but exists() return true.

Michael Kay
http://www.saxonica.com/

> -----Original Message-----
> From: Rahil Qamar [mailto:qamar_rahil@xxxxxxxxxxx] 
> Sent: 28 July 2005 11:56
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [xsl] error in XSL file when using JAXP
> 
> Thanks David and Michael
> 
> Okay at least I think I know where the problem is
> arising now.
> 
> I have a section of code soon after the for-each loop
> which tests for the common values present in both the
> XML files imported at the start of the XSL.
> 
> The lines are:
> -----------
> <xsl:choose>
>    <xsl:when test="distinct-values($aVal[for $a in .
> return
> normalize-space($oVal)[contains(lower-case(.),lower-case($a))]])">
> 
> 	<xsl:variable name="matchingVals"
> select="distinct-values($aVal[for $a in . return
> normalize-space($oVal)[contains(lower-case(.),lower-case($a))]])"/>
> 					
> 	<xsl:if test="not(empty($matchingVals))">
> ----------
> Now the variable $matchingVals does not contain nodes
> but common atomic values.
> 
> Is there any other way of writing out this test case
> so that I can deal with the new version processor
> requirements?
> 
> Note: $aVal and $oVal are -
> ----------
> ////$arch = File1.xml
> ////$ont = File2.xml
> <xsl:variable name="aVal"
> select="$arch/SubConcepts/SubConcept/Value"/>
> 		
> <xsl:for-each select="$ont/SubConcepts/SubConcept">
>      <xsl:variable name="oVal" select="."/>
> 
> ---------
> 
> Thanks
> Rahil
> 
> --- David Carlisle <davidc@xxxxxxxxx> wrote:
> 
> > 
> > > Line 162 in the said file is :
> > 
> > That is not the line with generating the error
> > though. (Line numbering
> > can easily be out due to vagaries in dos/unix line
> > ends etc.
> > 
> > The error means that you have something like
> > 
> > test="zzzz"  or  ... [zzzzz]  and zzz evaluates to a
> > sequence whose
> > first item is not a node but is a number or a string
> > or some other
> > atomic value.  If the sequence doesn't consist of
> > nodes then to use it
> > as a boolean in a test it has to consist of a single
> > item, which is a
> > boolean value either true or false. If the sequence
> > is a sequence of
> > nodes then, as in xpath1 it will count as false if
> > it is empty and true
> > otherwise.
> > 
> > David
> > 
> > 
> >
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