I'm no expert, but one of the neat things about RankQuery is that you can implement your own collector, and spit out documents that are *not* in score order. One use case I came across for which we used this was "do not display items from the same supplier within 4 results of each other". This would have been impossible (or very hard indeed) to implement using a pure scoring algorithm.
Upayavira On Wed, Sep 16, 2015, at 12:21 PM, Parvesh Garg wrote: > Hi All, > > I wanted to understand the difference between CustomScoreQuery and > RankQuery. From the outside, it seems they do the same thing with > RankQuery > having more functionality. > > Am I missing something? > > > Parvesh Garg
