Re: [xsl] xsl 2.0 recursive functions and return value

Subject: Re: [xsl] xsl 2.0 recursive functions and return value
From: Joern Nettingsmeier <nettings@xxxxxxxxxxxxxxxxxxxxxx>
Date: Sun, 26 Feb 2006 19:09:06 +0100
replying to myself here...

Joern Nettingsmeier wrote:
hi everyone!

i'm trying to write a branching recursive function, but i have a problem with the "xsl:sequence" being non-terminating.

how can i get the following to work:

i could think of this solution:

<xsl:function name="r2c:__hasTextContent" as="xs:boolean?"> <xsl:param name="node"/> <xsl:for-each select="$node/*"> <xsl:choose> <xsl:when test="r2c:isOutputNode(.)"/> <xsl:when test="r2c:isLeafNode(.)"> <xsl:sequence select="true()"/> </xsl:when> <xsl:otherwise> <xsl:sequence select="r2c:hasTextContent(.)"/> </xsl:otherwise> </xsl:choose> </xsl:for-each> </xsl:function>

<xsl:function name="r2c:hasTextContent" as="xs:boolean">
  <xsl:param name="node"/>
    <xsl:when test="r2c:__hasTextContent($node)">
      <xsl:sequence select="true()"/>
      <xsl:sequence select="false()"/>

but at a time where i'm still dancing in the courtyard chanting "no more ugliness in the world" after having discovered xsl 2.0, this one is a bit of a spoil. :(

is there a solution which, in addition to working, is actually beautiful?
(i know i could easily get rid of the wrapper in this case since the empty set evaluates to "false", but i'm looking for a general solution that will also apply to non-boolean functions.)



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