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Re: [xsl] Processing based on number - alternatives to recursion?

2008-03-04 09:14:33
xslt 2.0

<xsl:for-each select="1 to .">
...
</xsl:for-each>

On Tue, Mar 4, 2008 at 7:10 PM, Michael Ludwig <mlu(_at_)as-guides(_dot_)com> 
wrote:
I have a numeric value in my XML and want to use it to control
 some processing, say counting up until the number is reached, and
 outputting a line in the process.

 $ cat xtimes.xml
 <Urmel>10</Urmel>

 I use recursion and everything works fine. Is recursion the
 preferred way to use a number to steer processing in XSL 1.0?

 $ cat xtimes.xsl
 <xsl:transform version="1.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
   <xsl:output method="text"/>
   <xsl:template match="Urmel"><!-- match element -->
     <xsl:call-template name="rec">
       <xsl:with-param name="iter" select="1"/>
     </xsl:call-template>
   </xsl:template>
   <xsl:template name="rec"><!-- recursive template -->
     <xsl:param name="iter"/>
     <xsl:if test="not( $iter &gt; . )"><!-- Greater than me? -->
       <xsl:value-of select="concat( $iter, '&#10;' )"/>
       <xsl:call-template name="rec"><!-- Then recurse. -->
         <xsl:with-param name="iter" select="$iter + 1"/>
       </xsl:call-template>
     </xsl:if>
   </xsl:template>
 </xsl:transform>

 In order to use xsl:for-each, I'd have to dispose of something
 generating a node-set based on my number, wouldn't I?

 Is there anything like that in XSL 1.0 or 2.0?

 Would that somehow be better?

 Or is this misguided optimization thinking in thinking that lots of
 template invocations are bad?

 Michael

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