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recursive recursion

• To: "'xml-dev@l...'" <xml-dev@l...>
• Subject: recursive recursion
• From: Ronald Kent Gibson <Kent.Gibson@i...>
• Date: Fri, 25 Apr 2003 16:30:27 +0200

Dear All,

I suspect that this is a really easy problem, but I am having a problem
getting my head around the problem.

I have two attributes each with multiple values like x;y;z and a;b.

I want to output every possible permutation of each of these attributes, for
example xa,ya,za,xb,yb,zb

So I need to recurse within the recursive algorithmn, but almost every thing
I try doesn't work.

Does anyone clever with recursion have some advice.

thanks

kent

Here is some code I tried.

		<xsl:call-template name="returnStringBeforeX">

			
			<xsl:with-param name="myStringA" select="x;y;z"/>

			<xsl:with-param name="myStringB" select="a;b"/>	
				
	</xsl:call-template>		

	<xsl:template name="returnStringBeforeX">		
	
		<xsl:param name="myStringA"/>		
		<xsl:param name="myStringB"/>		

		<xsl:choose>			
			<!-- This rule fires when threre is something after
;, what is on the left is ready so we output this result -->

			<xsl:when test="substring-after($myStringA, ';')
!='' ">				

			<xsl:value-of select="substring-before($myStringA,
';')"/>	
			<xsl:value-of select="substring-before($myStringB,
';')"/>	
		
				<!-- We have not finished recursing so we
call the funktion again -->				
				<xsl:call-template
name="returnStringBeforeX">					
					<xsl:with-param name="myStringA"
select="substring-after($myStringA, ';')"/>				
					<xsl:with-param name="myStringB"
select="substring-after($myStringB, ';')"/>	
				</xsl:call-template>			
			</xsl:when>			
			<xsl:otherwise>				
			
			<!-- We have finished recursing so we output what is
ready -->				

			<xsl:value-of select="$myStringA"/>
			<xsl:value-of select="$myStringB"/>

			</xsl:otherwise>		
		</xsl:choose>	
</xsl:template>	

• Follow-Ups:
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    • From: "Dimitre Novatchev" <dnovatchev@y...>
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    • From: Ray Tayek <rtayek@a...>

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