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Chris HollySubject: Using the key function on an imported document
Author: Chris Holly
Date: 11 Apr 2005 10:12 AM

I'm importing an XML document to cross-reference in an XSLT, by
using the document( filename ) function, and storing it as a
variable which I can then run queries on.

However, I can't seem to create a key on the file, as when I use:

<xsl:key name="KeyName" match="$File/Node" use="Element"/>

I get an error saying it is an "Invalid XPath expression".

When I first started working on this I created a lot of the XSLT working on the
XML document and did not treat it as a variable, but I now can't get any of it
work using a variable.

Please help!

(Deleted User) Subject: Using the key function on an imported document
Author: (Deleted User)
Date: 11 Apr 2005 10:46 AM
You can't use document function(or through variable) in key definition.

You need to define the key without reference to particular document and use it in the
right context, xslt processor will take care of it.

in your case, you probably need to do like:
<xsl:key name="KeyName" match="Node" use="Element">

then use it in the right context
<xsl:for-each select="document('xxx.xml')">
<xsl:value-of select="key('KeyName', $keyValue)" />

Hope this helps.


Chris HollySubject: Using the key function on an imported document
Author: Chris Holly
Date: 12 Apr 2005 10:56 AM
Thanks for the help!

You're right, I was trying to be explicit when it works it out itself.

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