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Re: does xpath expressions/matches support variables?

From: Martin Honnen <mahotrash@-----.-->
To: NULL
Date: 6/4/2006 1:54:00 PM




stoj wrote:


> Eg. xsl snippet - intended to invoke execute-code block if the node exists.  
> It works perfectly if i replace "$var" with "/root/parent/child".
> 
> <xsl:variable name="var">/root/parent/child</xsl:variable>
> <xsl:if test="$var">
> ...execute-code
> </xsl:if>
> 
> 1. Observed behaviour is that the if statement always fires.  Presumably 
> because it is resolving to <xsl:if test="'/root/parent/child'">, which 
> resolves to true.  If this is true, how can i change this to <xsl:if 
> test="/root/parent/child">?  Is there a function availble to strip away the 
> extra quotations?


Some processors have extension functions for dynamic evaluation of a 
string as an XPath expression but usually within XSLT 1.0 there is no 
way to dynamically evaluate a string as an XPath expression.

-- 

	Martin Honnen --- MVP XML
	http://JavaScript.FAQTs.com/

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