It's not possible in JSON Facet API now.
It reminds me http://shaierera.blogspot.com/2013/01/facet-associations.html
and https://issues.apache.org/jira/browse/SOLR-9480.
On Thu, May 24, 2018 at 11:31 AM, Tobias Kässmann
wrote:
> Hey,
> I’m just playing around with the new payload feature in Solr and try to
> use it within the facet component.
>
> In my documents I have a field called "keywords" and indexed there some
> keywords for a document with a score as payload for each. Now I want to ask
> a question like: "Which are the most relevant keywords for this query?“.
> The keywords should be sorted by the summed score of each keyword in a doc.
>
> To do this, I’ve tried to use the JSON Facet API to sort by the sum of all
> keyword payloads. But I couldn’t find a way to use the payload function
> within the facet sorting.
>
> Do I miss something or is there so far no solution to sort the facets by
> payload?
>
> Greetings,
> Tobias
--
Sincerely yours
Mikhail Khludnev