Re: [xsl] Handling position in non-atomic sequences

["Imsieke, Gerrit, le-tex gerrit.imsieke@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

You can keep the variable as a sequence of elements and declare a 
function like this:

  <xsl:function name="my:index-of" as="xs:integer*">
    <xsl:param name="seq" as="node()*"/>
    <xsl:param name="nodes-in-question" as="node()*"/>
    <xsl:sequence select="index-of(
                            for $s in $seq
                              return generate-id($s),
                            for $n in $nodes-in-question
                              return generate-id($n)
                          )"/>
  </xsl:function>

If youbre using XSLT 3 you can use $seq ! generate-id() etc. for brevity.

Then my:index-of($headings, .) will give you the position of the context 
node within the sequence of headings.

Gerrit

On 02.05.2020 12:52, Michael MC<ller-Hillebrand mmh@xxxxxxxxx wrote:
> Hi folks,
>
> if a sequence stored in a variable consists of elements, we can not use the nice function index-of().
>
> Also, if the variable is typed as="element()*" I cannot use the axes preceding-sibling or following-sibling. I can solve that by not typing the variable or use  as="document-node()" after adding <xsl:document> to the variable's sequence constructor.
>
> My current solution finding the position of the first <h1> in a sequence would be something like:
>
> count($seq/h1[1]/preceding-sibling::*) + 1
>
> with $seq being a sequence typed as document-node().
>
> Are there better methods to get the position of a certain element in the sequence?
>
> In my scenario I collect a certain set of elements using xsl:copy-of and want to process them in the context of that sequence (regarding position) and not in the context of their original document location.
>
> Thanks a lot for any pointers,
>
> - Michael