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Re: [xsl] an error I do not understand

2011-09-30 03:47:53
On 30/09/2011 01:07, Graydon wrote:
So I've got a recurrent issue with taking big (~.5 Mlines, ~15 MiB)
files of metadata and merging them, or updating them.

(this happens in an XSLT 2.0 environment.)

Below is the minimal case of the error I do not understand:


     <xsl:for-each select="$areaNames">
       <!-- F [Saxon-PE 9.3.0.5] Leading '/' cannot select the root node of the 
tree containing the context item: the context item is an atomic value -->
       <xsl:sequence select="key('name2Area',current())"/>


There's an implicit third argument to key(), telling it which document to search. The default value is effectively "/" - that is, the document containing the context node. If there isn't a context, node, using "/" fails.

I must see if I can improve the error message (the problem is that Saxon expands the call at an early stage to use "/" explicitly, so the error message reflects the query as Saxon rewrote it, not the original as you wrote it.)

Michael Kay
Saxonica

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