Re: [xsl] [Xslt 3 Start] Use case for Function Call Invocation

["Dimitre Novatchev dnovatchev@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

On Thu, Feb 4, 2021 at 12:24 AM Martin Honnen martin.honnen@xxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

>
> If you have a module/a function library you can use a function of it with
> e.g.
>
> let $xslt := <xsl:package xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> <http://www.w3.org/1999/XSL/Transform> version="3.0">
> <xsl:import href="http://www.xsltfunctions.com/xsl/functx-1.0.1-nodoc.xsl";
> <http://www.xsltfunctions.com/xsl/functx-1.0.1-nodoc.xsl>/>
> <xsl:expose component="function" names="*" visibility="public"/>
> </xsl:package>
> return
> transform(
>     map {
>         'stylesheet-node' : $xslt,
>         'initial-function' : QName('http://www.functx.com',
> 'repeat-string'),
>         'function-params' : ['x', 5]
>     }
> )?output
>
> The XQuery part to first construct an XSLT 3 package importing the XSLT 2
> functx library is only necessary as the XSLT 2 functions are otherwise not
> public. If you had an XSLT 3 version of functx with public functions you
> would just use the module with e.g. the transform function.
>

Contrast this with a simple XPath-function-library loader (the transform()
function isn't used at all):

<xsl:stylesheet version="3.0" xmlns:xsl="
http://www.w3.org/1999/XSL/Transform";
  xmlns:xs="http://www.w3.org/2001/XMLSchema";
  xmlns:map="http://www.w3.org/2005/xpath-functions/map";
  xmlns:f="http://www.fxpath.org";>

  <xsl:variable name="vBaseFXpathUri"
    select="(environment-variable('FXpathDir')[normalize-space()],
'..')[1]"/>

  <xsl:function name="f:loadFunctionLibraries" as="map(*)"
visibility="public">
    <xsl:param name="pLibrariesUris" as="xs:string+"/>

    <xsl:variable name="vAllText" as="xs:string+" select=
      "string-join(
                  (for $p in $pLibrariesUris
                    return unparsed-text($p)
                  ),
                  ',&#xA;'
                 )"/>

    <xsl:evaluate xpath="'map:merge((' || $vAllText || '))'">
      <xsl:with-param name="pBaseFXpathUri" select="$vBaseFXpathUri"/>
    </xsl:evaluate>
  </xsl:function>
</xsl:stylesheet>


-- 
Cheers,
Dimitre Novatchev
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