Re: [xsl] Sequence count vs. context position

["Michael Mueller-Hillebrand michael.mueller-hillebrand@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Hi Gerrit & Mike,

wouldn't this short form work:

key('keyName', $keyValue)[.[1]]

My bottom line: You have to be careful with position predicates.

Thanks,
Michael


-----Original Message-----
From: Imsieke, Gerrit, le-tex gerrit.imsieke@xxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Friday, October 4, 2024 9:59 AM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] Sequence count vs. context position

Maybe something like

key('keyNameC"BB, $keyValue)/../*[maybe another predicate such as a name
test][1]

On 04.10.2024 09:52, Michael Mueller-Hillebrand
michael.mueller-hillebrand@xxxxxxxxx wrote:
> Dear colleagues,
>
> I am somewhat puzzled by this situation:
>
> key('keyNameC"BB, $keyValue)[1]
>
>  From an example in Michael KayC"BBs XSLT 2.0 bible and the description of
position(), I learn that this form selects the first item in the sequence of
nodes returned by key().
>
> How would I have to write the expression, if I wanted to filter only those
nodes, which are at position 1 in their respective document context? I know I
can have predicates which consider the context of all returned nodes, looking
at ancestors etc. But somehow position() seems to be special.
>
> Thanks a lot,
>
> Michael
>
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