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Re: ClassCastException

Subject: Re: ClassCastException
From: David Carlisle <davidc@xxxxxxxxx>
Date: Fri, 12 Dec 2003 23:32:05 GMT
xslt classcastexception
> Is there somewhere I can find an example of the difference between a node
> set and a result tree fragment?

archives of this list, xslt spec.

> Is a node set just a "path",
No a path is an expression (think x + 3 in C or fortran etc)
a node set is a value (think 5 in c or fortran)
in common with most other languages variables in xslt can only hold
values not expressions.

A result tree fragment could have been the same as a node set (and is in
xslt2 drafts) but in xslt 1 there is a restriction that stops you
making queries, further transforms on the result of a transformation.
If you use a variable binding element (xsl:variable xsl:param or
xsl:with-param with content rather than a select expression
teh result of executing the content is stored in the variable as a
result tree fragment, the only thing you can do with that is copy it to
the final result using xsl:copy-of or convert it to a string (just about
any other operation on it) in partiular you can not use an Xpath / step
to go $x/a/b/c to extract the element nodes out of the variable.

> Is a node set just a "path", or set of nodes with only one
"destination"
a node set is a set of nodes, I'm not sure what you mean by destination.

David

-- 
http://www.dcarlisle.demon.co.uk/matthew

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list


Current Thread
  • RE: ClassCastException, (continued)
    • Michael Kay - Fri, 12 Dec 2003 06:27:20 -0500 (EST)
    • alana - Fri, 12 Dec 2003 00:41:15 -0500 (EST)
      • David Carlisle - Fri, 12 Dec 2003 17:01:35 -0500 (EST)
        • JCS - Fri, 12 Dec 2003 17:34:34 -0500 (EST)
        • David Carlisle - Fri, 12 Dec 2003 18:32:23 -0500 (EST) <=
        • J.Pietschmann - Fri, 12 Dec 2003 19:23:46 -0500 (EST)

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