Re: [xsl] Capturing result of <xsl:apply-templates/> in a variable

[David Sewell <dsewell@xxxxxxxxxxxx>]

Right... in the example I gave, the template will always return at least an 
element, but I should have generalized for null results.

On Tue, 6 Dec 2011, David Carlisle wrote:

> On 06/12/2011 19:52, David Sewell wrote:
> > Just now when writing a transform, for temporary diagnostic purposes I
> > needed to produce messages showing (1) the initial string value of an
> > input element before template application, and (2) the output string
> > value after template application. Oddly enough I have never before
> > wanted to do precisely that task.
> >
> > A moment's reflection suggested that I could capture the result of
> > <xsl:apply-templates/> and use it as a variable, thus (given XSLT 2.0):
> >
> > <xsl:template match="INPUT">
> > <xsl:variable name="appliedTemplates" as="item()+">
> > <xsl:apply-templates/>
> > </xsl:variable>
> the + there means this will generate an error if the apply-templates 
> generates no output, whereas the original version would just silently produce 
> nothing. a * would allow this empty result.
>
> David

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