xalan:evaluate execution context

4 Apr 2003 18:56:06 -0000 

Attached are ec_test.xml ec_test.xsl and ec_test.err. The point of them is to 
test use of variables in xpath expressions that will be dynamically evaluated 
(i.e. xpath expressions with variables from the source xml are evaluated 
dynamically by the stylesheet.) The variable $sibList is global in the 
stylesheet and selects a RTF from the source xml. There are then calls 
xalan:execute on string values in the source document that are XPath 
expressions containing $sibList. I have a few debugging messages in there 
because I wanted to see what was going on. The problem seems to be that 
dynamically evaluated xpath expressions aren't finding global variables.

Is this actually an error in Xalan-C++ (using 1.4) or am I misusing 
xalan:evaluate? The XPathExecutionContext seems to include variables (as there 
is a getVariable method), so it doesn't seem like it is that. Also, I assume 
that Xalan-C++ is trying to follow the conventions for EXSLT's dyn:evaluate I 
have searched bugzilla and the mailing list with no results. 

I have also tested this against Saxon (changing xalan namespace to saxon and 
using saxon:evaluate instead) and I get the expected result (i.e. it finds the 
variables correctly). But then my expected result might not be the correct 
result. :)

I am going to try getting the latest 1.5 RC and see if the issue exists in it.

Rachael

Attachment: ec_test.err
Description: ec_test.err

<?xml version="1.0"?>

<root>
	<xpath>exslt-common:object-type($sibList)</xpath>
	<xpath>string($sibList)</xpath>
	<sibling-list>
		<sibling>a</sibling>
		<sibling>b</sibling>
	</sibling-list>
	<kid id="a" xpath="$sibList/sibling[1]/text()"/>
	<kid id="b" xpath="$sibList/sibling[2]/text()"/>
</root>

Attachment: ec_test.xsl
Description: ec_test.xsl

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