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From "Ryan Aylward" <>
Subject RE: Help Overriding behavior in BooleanQuery scorer
Date Tue, 07 Dec 2010 21:23:55 GMT
Thanks very much for the response, Erick.

I think one of my co-workers tried to use it and seemed to think it
didn't meet our needs but I'll give it a shot.

In the meantime, I'm curious to see if anyone else has modified
BooleanQuery to modify how calculates the score. Is the only way to do
that to make a copy of the classes?

-----Original Message-----
From: Erick Erickson [] 
Sent: Tuesday, December 07, 2010 4:57 AM
Subject: Re: Help Overriding behavior in BooleanQuery scorer

I haven't a clue about the package protected thing, but
you may not need to go there. This sounds a lot like
DisjunctionMaxQuery, have you looked at it?


On Tue, Dec 7, 2010 at 1:09 AM, Ryan Aylward <> wrote:

> I would like to customize the scoring of the BooleanQuery. The scoring
> for Boolean queries sums together each clause. Rather than summing
> together each clause, I would like to take the max score of any of the
> clauses.
> Ideally, I would like to inherit from BooleanScorer and BooleanScorer2
> and make a couple of very minor changes to it. Unfortunately, both
> classes are package protected and declared as final. This prevents me
> from being able to modify them at all. It seems the only way I can
> change this is to basically create a copy of a bunch of classes
> (BooleanQuery, BooleanWeight, BooleanScorer, BooleanScorer2,
> DisjunctionSumScorer, ConjunctionScorer, etc).
> Does anyone know why many of those classes are package protected and
> final? Any suggestions for how to customize this part of the scoring
> algorithm without having to copy all of these classes?
> Thanks,
> Ryan Aylward

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