I have a variable initialized at runtime with the path to some element
(something like this /elem1/elem2/elem3). Can I use this variable to
navigate to the elem3 in another variable that is initialized with the
document like this:
<xsl:variable name="doc" select="document('./somedocument.xml')"/>
A number of products including Saxon support an xx:evaluate() extension
which allows you to evaluate an XPath expression that's held in a string (or
in a node in a source document), but it's not part of the standard XSLT 1.0
or 2.0 language. It's a very useful extension though!
You have to be careful with the context for the expression: both the static
context (in-scope variables, namespaces) and the dynamic context (context
item and position). You'll almost certainly find that different products
handle these questions differently.
Michael Kay
http://www.saxonica.com/
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