Re: [xsl] Error trapping in xsl

Subject: Re: [xsl] Error trapping in xsl
From: "dante" <dante@xxxxxxxxxxxxx>
Date: Thu, 12 Jul 2001 16:43:32 +0800
To clarify - the XML would look like either:

        <image_link>marker.gif</image_link>                 <!--CONTAINS


        <image_link />


----- Original Message -----
From: "Michael Kay" <mhkay@xxxxxxxxxxxx>
To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Thursday, July 12, 2001 4:27 PM
Subject: RE: [xsl] Error trapping in xsl

> > I'm trying to error trap for empty elements in the xml document
> > using xsl:choose & I can't work out the syntax.
> First thing is to decide what you mean by "empty" (e.g. is an element
> if it contains only a comment? Only whitespace text?) A typical meaning is
> "has no child nodes", and you can test for that as <xsl:when
> test="not(child::node())">.
> > Is there a way of error trapping for empty elements globally
> > using xsl?
> Yes, write a high-priority template rule for them:
> <xsl:template match="*[not(child::node())]" priority="10">
>   <xsl:message terminate="yes">Element is empty</xsl:message>
> </xsl:template>
> Of course this will only match an element if it is processed using
> <xsl:apply-templates/>
> Mike Kay
> Software AG
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