Re: Xpath try catch not allowed in XSLT?

Ah hah. Cheers.
The snippet won't work for me but there are other ways of doing what I
need.

On Sun, Sep 13, 2020 at 2:22 PM Martin Honnen <[email protected]> wrote:

> On 13.09.2020 20:09, Ihe Onwuka wrote:
> > Error near {... (try {key} at char 73 in xsl:element/@namespace on line
> > 98 column 55 of translator.xsl:
> >    XPST0003  try/catch expressions are not allowed in XPath
> >
> > I am running Saxon 10.2
> >
> > My use case was wanting to use the zero-or-one XPath function which does
> > exactly what I want but returns an error where I want an empty () node
> > returned.
> >
> > hence
> >
> >   try {zero-or-one($someSequence)}
> >          catch * {()}
>
> XSLT and XQuery have try/catch, XPath not; XQuery has it as an
> expression, XSLT as element instructions. I think you get that
> particular error from Saxon as it supports try/catch expressions in
> XQuery.  In XSLT you need to use the xsl:try/xsl:catch element
> instructions https://www.w3.org/TR/xslt-30/#try-catch e.g.
>
>     <xsl:try select="zero-or-one($someSequence)">
>       <xsl:catch errors="*" select="()"/>
>     </xsl:try>
>
>
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