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RE: [xsl] how to workaround restriction of overloading functions


Subject: RE: [xsl] how to workaround restriction of overloading functions
From: Robby Pelssers <Robby.Pelssers@xxxxxxx>
Date: Tue, 17 Jul 2012 17:32:10 +0200

Damn...

I was already thinking along those lines but I wasn't sure if such approach
would work.


So let's assume I needed an uber-function that would return a sequence of
URI's, would sth  like this work?

I want a list of all URI's stored in a variable uniqueURIs.  Since I can't use
mode in a select statement like
<xsl:variable name="uniqueURIs" select="/maximo:*" mode="getURI"/>

I will probably need to call a function?
<xsl:variable name="uniqueURIs" select="znapz:getUniqueURIs(/maximo:*)"/>

<xsl:function name="znapz:getUniqueURIs">
  <xsl:param name="elements" as="element(maximo:*)*"/>
  <!-- should I apply-templates here now?  This was the part which gets me
confused and I was thinking this might not work -->
  <xsl:apply-templates select="$elements" mode="getURI"/>
</xsl:function>


<xsl:template match="maximo:crontask" mode="getURI" as="xs:anyURI">
  <xsl:sequence select="'someURI_1'"/>
</xsl:template>

<xsl:template match="maximo:table" mode="getURI" as="xs:anyURI">
  <xsl:sequence select="'someURI_2'"/>
</xsl:template>



-----Original Message-----
From: Andrew Welch [mailto:andrew.j.welch@xxxxxxxxx]
Sent: Tuesday, July 17, 2012 5:18 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] how to workaround restriction of overloading functions

> Just double checking if there is a better way.
...
> <xsl:function name="znapz:getURI" as="xs:anyURI">
>   <xsl:param name="element" as="element(maximo:SCRIPTLAUNCHPOINT)"/>
>   <xsl:sequence
>     select="{concat($destinationFolder, '/'SCRIPTLAUNCHPOINT/',
$element/maximo:AUTOSCRIPT, '.xml')}"/>
> </xsl:function>
>
> <xsl:function name="znapz:getURI" as="xs:anyURI">
>   <xsl:param name="element" as="element(maximo:SECURITYRESTRICT)"/>
>   <xsl:sequence
>      select="{concat($destinationFolder, '/SECURITYRESTRICT/',
$element/maximo:APP, '.xml')}"/>
> </xsl:function>

The 'better way' is to use templates instead of functions here.  Where
you currently call znaps:getURI() passing in the element,
apply-templates to it instead (in a mode) and let the template
matching mechanism take care of it.


--
Andrew Welch
http://andrewjwelch.com


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