Re: [basex-talk] searching for the nearest ancestor

26 May 2016

      Hi Christian,

I've been thinking about that solution too. 

Thanx for your reply,
Rob

-----Oorspronkelijk bericht-----
Van: Christian Grün [mailto:christian.gruen@gmail.com] 
Verzonden: woensdag 25 mei 2016 16:40
Aan: Rob Stapper
CC: BaseX
Onderwerp: Re: [basex-talk] searching for the nearest ancestor

Hi Rob,
...
I found this solution [1] but I was wondering if also a solution is 
possible that makes use of the ancestor being a reverse-axis[ 2].
[ 1] ( $element/ancestor::*/child::*[ @ID = $refID] ) [ last()]

You probably need two id tests:

  $element/ancestor::*[*/@ID = $refID][1]/*[@ID = $refID]

I guess it depends mostly on the input if the first or second alternative will be faster.

Hope this helps,
Christian