RE: [xsl] xsl:if syntax problem

Subject: RE: [xsl] xsl:if syntax problem
From: "Michael Kay" <michael.h.kay@xxxxxxxxxxxx>
Date: Wed, 20 Mar 2002 14:01:47 -0000
> I want to run a simple xsl:if statement testing an elements
> tag for null
> value.

Start by defining exactly what you mean. There is no such thing as a null
value in the XPath data model.

If you want to test whether the context node has a child element called X,
use test="X". If you want to test whether it has a child called X that has
non-empty content, use test="X!=''"

Michael Kay
Software AG
home: Michael.H.Kay@xxxxxxxxxxxx
work: Michael.Kay@xxxxxxxxxxxxxx


 We have so far ....
>
> <xsl:template match="entity">
>   <xsl:if test="onClick='' or not(onClick='')">
>     do processing
>   </xsl:if>
>
> However, this xsl does not appear to work. The xsl will run
> on the following
> xml code.
>
>   <entity id="e1">
>     <description>Customers</description>
>     <oncontextmenu></oncontextmenu>
>     <image>images/book.gif</image>
>     <imageOpen>images/bookOpen.gif</imageOpen>
>     <onClick>http://www.google.com</onClick>
>
> Any help, tips, links will be much appreciated,
> Brian.
>
>
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