John.Frazzini@g... wrote:
> Please excuse the noob kind of question. I've been trying to select a
> node into a variable, but I want to change the value of one of the
> attributes somewhere within the node. For example, if I have the
> following node:
> 
> <P id="3">
>   <As>
>      <a value="4" />
>    </As>
>   <N value="1">
>     <S>
>        <sA name="foo" />
>     </S>
>    <T value="X." />
>  </N>
> </P>
> 
> I'm trying to copy P as-is except I want to change the value attribute
> of T to a substring (e.g., substring-before(.,'.')).

Start with the identity transformation template, then add a template for 
T/@value. The following sample then also creates a variable of the 
transformed P element as you seemed to want to do that too:

<xsl:stylesheet
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   version="1.0">

   <xsl:template match="@* | node()">
     <xsl:copy>
       <xsl:apply-templates select="@* | node()"/>
     </xsl:copy>
   </xsl:template>

   <xsl:template match="T/@value">
     <xsl:attribute name="{name()}">
       <xsl:value-of select="substring-before(., '.')"/>
     </xsl:attribute>
   </xsl:template>

   <xsl:template match="/">
     <xsl:variable name="foo">
       <xsl:apply-templates select="P"/>
     </xsl:variable>
     <xsl:copy-of select="$foo"/>
   </xsl:template>

</xsl:stylesheet>

-- 

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