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

2010-02-19 15:54:00
Ok, then if I make the template more generic.. ie:

       <xsl:function name="qp:test" as="item()*"
xmlns:functx="http://www.qplegaleze.ca";>
               <xsl:param name="n"/>

Is there a way to test if $n is a String?

Thanks,

Spencer

On Fri, Feb 19, 2010 at 1:39 PM, G. Ken Holman
<gkholman(_at_)cranesoftwrights(_dot_)com> wrote:
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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