[xsl] xsl:for-each , evaluate question

[Jitu <jibhatia at andiamo dot com>]

> Hi
>
> I am trying to write xsl:for-each loop as follows :
>
> <xsl:for-each  select="report/row[col='some value']">
> This works fine.
>
> But my select part has to be dynamic, as the filter condition will 
> change each time. Therefore i tried this :
>
> <xsl:param name="filterCond" />
> <xsl:variable name="completeFilterCond" select="concat('/report/row[' 
> , $filterCond,  ']' )" />
> <xsl:for-each select="$completeFilterCond">
>
> Where the filter condition gets passed as a parameter to the XSL file.
>
> In this case i get the following error :
>
> Can not convert #STRING to a NodeList!


I have been told that i can use xalan:evaluate function, but i cannot 
get it working. I am using xalan. I got the following error :

processor.javax.xml.transform.TransformerException: Prefix must resolve 
to a namespace: 00:00

I did declare the namespace as follows :
<xsl:stylesheet version="1.0" xmlns:xsl= 
"http://www.w3.org/1999/XSL/Transform"; 
<http://www.w3.org/1999/XSL/Transform> 
<http://www.w3.org/1999/XSL/Transform> xmlns:xalan= 
"http://xml.apache.org/xalan"; <http://xml.apache.org/xalan> 
<http://xml.apache.org/xalan> exclude-result-prefixes="xalan">

> Would appreciate if someone can help me solve this problem. 
> thanks
> Jitender.

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