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Re: [xsl] Error: XPTY0020: Leading '/' cannot select the root node of the tree containing the context item: the context item is an atomic value

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Hello Michael, Martin, and Andrew,

Thanks to your help it works perfectly now!

I am impressed: less than ten minutes later three perfect answers :)

Thank you very much, 

Dietrich


On Mon, 2011-01-10 at 11:44 +0000, Andrew Welch wrote:
> Hi,
> 
> You get this error:
> 
> > Error on line 12 of example-b.xsl:
> >  XPTY0020: Leading '/' cannot select the root node of the tree
> > containing the context item:
> >  the context item is an atomic value
> 
> ...because here within the for-each the "context item" is each of the
> items in the sequence of tokenized values (strings):
> 
> >      <xsl:for-each select="tokenize(example/bar/@ids, ',')">
> >        <xsl:value-of select="."/>: <xsl:value-of
> > select="key('index', .)" />
> 
> When you make the key call, it must be applied to an input tree...
> which by default is the tree containing the context node.  As there is
> no context node here, it causes the error.  The solution is to store a
> reference to the input doc outside of the for-each (say as a top-level
> element), and then reference that in the key:
> 
> <xsl:variable name="input" select="."/>
> 
> with
> 
> key('index', ., $input)

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