Hi, I am trying to understand how to influence scoring via RankQuery in solr >= 4.9. My requirements are two fold:
1) Use a custom collector 2) Change scoring of docs As far as i could understand, if we just want to change the scoring, we can write a QueryParserPlugin and extend CustomScoreQuery to introduce a CustomScoreProvider and modify the customScore method so that whenever we call scorer.score(), this new custom scorer would be used. This works perfectly in isolation (not using RankQuery). However, i want to use a custom scorer in my query object extending RankQuery (where i am setting a custom collector). One way to do this is to override the setScorer method and initialise an object of the new scorer here. The problem i'm experiencing here is that to modify the scoring explanation, i would need to rewrite the weight class which is one complexity i am trying to avoid. I would need the same scorer in a post-filter i wrote, and going by this method, i would need to set the scorer even in the post-filter. Is there another way to change scoring of docs while also using RankQuery API, which lets us change the explanation in an easier way? Regards, Ankit Singh
