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Re: XPath 2.0 function polymorphism

2005-12-20 06:50:16
David Carlisle wrote:

You should look at Dimitre's FXSL library; he has elevated
using elements to act as proxies for functions into an art
form:-)

  It's on my todo-list.  When I'll have free time.  You know
the song (I'm not sure this French expression exists in
English, but it could be understandable :-p).

For literals, since there are not so any base types
(although there could be a lot less) you can probably just
use xsl:choose, something like:

    <xsl:function name="ns:func">
      <xsl:param name="arg" as="node()"/>
      <xsl:choose>
       <xsl:when test="$arg instance of xs:integer">
         <xsl:sequence select="ns:func-integer($arg)"/>
       </xsl:when>
       <xsl:when test="$arg instance of xs:string">
         <xsl:sequence select="ns:func-string($arg)"/>
       </xsl:when>
          ...
       <xsl:otherwise>
      <xsl:apply-templates select="$arg" mode="ns:func"/>
      </xsl:otherwise>
     </xsl:choose>
    </xsl:function>

  Yes, it's what I'm using now.

  Thanks for the pointer,

--drkm

















        

        
                
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