[jira] [Created] (LUCENE-5487) Can we separate "top scorer" from "sub scorer"?

["Michael McCandless (JIRA)" <ji...@apache.org>]

Michael McCandless created LUCENE-5487:
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             Summary: Can we separate "top scorer" from "sub scorer"?
                 Key: LUCENE-5487
                 URL: https://issues.apache.org/jira/browse/LUCENE-5487
             Project: Lucene - Core
          Issue Type: Improvement
          Components: core/search
            Reporter: Michael McCandless
            Assignee: Michael McCandless


This is just an exploratory patch ... still many nocommits, but I
think it may be promising.

I find the two booleans we pass to Weight.scorer confusing, because
they really only apply to whoever will call score(Collector) (just
IndexSearcher and BooleanScorer).

The params are pointless for the vast majority of scorers, because
very, very few query scorers really need to change how top-scoring is
done, and those scorers can *only* score top-level (throw throw UOE
from nextDoc/advance).  It seems like these two types of scorers
should be separately typed.




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