how can i build up a string iteratively in xslt

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manwood 87 posts 109 karma points

Mar 31, 2010 @ 10:53

0

How can I build up a string iteratively in XSLT?

Hi

I want to do a for-each over a series of nodes, extract some detail from each node, append the detail onto a string, then finally display the composite string result. Is there an easy way to do this in XSLT?

Thanks

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Tommy Poulsen 514 posts 708 karma points

Mar 31, 2010 @ 11:03

Hi manwood

You would probably want to call templates recursively to build up your string, as you cannot re-assign values to a variable.

Here is an example of a call-template structure

<!-- Using call-template -->
  <table><tr><td>
  <xsl:call-template name="Fibonacci">
    <xsl:with-param name="prev" select="1" />
    <xsl:with-param name="next" select="1" />
    <xsl:with-param name="itemsLeft" select="10" />
  </xsl:call-template>
  </td></tr></table>
</xsl:template>

<xsl:template name="Fibonacci">
  <xsl:param name="prev"/>
  <xsl:param name="next"/>
  <xsl:param name="itemsLeft"/>
 
  <xsl:value-of select="$prev"/><br/>

  <xsl:if test="$itemsLeft &gt; 0">
    <xsl:call-template name="Fibonacci">
      <xsl:with-param name="prev" select="$next" />
      <xsl:with-param name="next" select="$prev+$next" />
      <xsl:with-param name="itemsLeft" select="$itemsLeft - 1" />
    </xsl:call-template>
  </xsl:if>
</xsl:template>

To build up your string you could keep passing on the current string as a parameter in the recursion

>Tommy

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How can I build up a string iteratively in XSLT?