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 13:52 -0800, Spencer Tickner wrote:
> Ok, then if I make the template more generic.. ie:

In my response I made it generic by declaring the type of the 
parameter as an item:

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

>        <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?

Sure:

  <xsl:when test="$n instance of xsd:string">

... but because your second <xsl:when> relies on $n being a node, I 
thought it safest to catch all atomic values by testing that the 
argument isn't a node.  I tell my students to write their 
transformations defensively so as to catch unexpected inputs.  I 
don't think it is safe to simply check only for a string because the 
next test is going to choke on atomic values of other types.

I hope this helps.

. . . . . . . . . . . . Ken


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