Re: XPath 2.0 function polymorphism

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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