Re: [xsl] Required item type of first argument of <function> is node(); supplied value has item type xs:string

["G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>]

At 2010-02-19 13:30 -0800, Spencer Tickner wrote:
> I'm creating a function (so using 2.0), and this function should be
> generic enough to handle pretty much anything I throw at it, so I set
> the param type as node(). Trouble pops up though when I call a
> function such as the upper-case() xslt function on the parameter being
> passed in, as it's a string now, not a node.
>
> How can you convert a string to a text node?

You cannot ... you can build a text node context free or in a 
temporary tree from a string, but it will not have any ancestors or 
descendants (actually, in a temporary tree you could build ancestors 
.. but there is no relationship to the source node that was converted 
to upper case.

> I put together an example of the problem I'm having below:
>
> <?xml version='1.0'?>
> <xsl:stylesheet version="2.0"
>         xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
>         xmlns:xsd="http://www.w3.org/2001/XMLSchema";
>         xmlns:qp="http://www.qplegaleze.ca";
>         exclude-result-prefixes="qp xsd">
>
>         <xsl:function name="qp:test" as="item()*"
> xmlns:functx="http://www.qplegaleze.ca";>
>                 <xsl:param name="n" as="node()"/>

<xsl:pram name="n" as="item()"/>

>                 <xsl:choose>

<xsl:when test="not($n instance of node())">
 <xsl:call-template name="doStuff">
   <xsl:with-param name="n" select="$n"/>
 </xsl:call-template>
</xsl:when>

or, if you really need a node:

<xsl:when test="not($n instance of node())">
 <xsl:variable name="node">
   <xsl:value-of select="$n"/>
 </xsl:variable>
 <xsl:call-template name="doStuff">
   <xsl:with-param name="n" select="$node/text()"/>
 </xsl:call-template>
</xsl:when>

>                         <xsl:when test="$n/descendant-or-self::*">
>                                 <xsl:apply-templates select="$n" 
> mode="test"/>
>                         </xsl:when>
>                         <xsl:otherwise>
>                                 <xsl:call-template name="doStuff">
>                                         <xsl:with-param name="n" 
> select="$n"/>
>                                 </xsl:call-template>
>                         </xsl:otherwise>
>                 </xsl:choose>
>         </xsl:function>

I hope this helps.

. . . . . . . . . . Ken

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