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

[Spencer Tickner <spencertickner@xxxxxxxxx>]

Hi List, thanks in advance for any help.

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? 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:choose>
			<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>
	
	<xsl:template match="*" mode="test">
		<xsl:copy>
			<xsl:copy-of select="@*"/>
			<xsl:apply-templates mode="test"/>
		</xsl:copy>
	</xsl:template>

	<xsl:template match="text()" mode="test">
		<xsl:call-template name="doStuff">
			<xsl:with-param name="n" select="."/>
		</xsl:call-template>
	</xsl:template>

	<xsl:template name="doStuff">
		<xsl:param name="n"/>
		Stuff was done <xsl:value-of select="$n"/>
	</xsl:template>
		

<xsl:template match="/">
	
	<xsl:variable name="elemTest"><p>Element</p></xsl:variable>
	<xsl:variable name="attText"><p a="attribute"/></xsl:variable>
	<xsl:variable name="text">Text</xsl:variable>
	<xsl:variable name="notWorking"><xsl:value-of
select="$elemTest"/></xsl:variable>

	<xsl:sequence select="qp:test($elemTest)"/>
	<xsl:sequence select="qp:test($attText)"/>
	<xsl:sequence select="qp:test($text)"/>
	<xsl:sequence select="qp:test(upper-case($notWorking/text()))"/>
		
</xsl:template>

</xsl:stylesheet>

Thanks,

Spencer