Hi,

Just add a BoostQuery  with a boost factor of 0.5 around the 
ConstantScoreQuery. It's just one line more in your code. I don't understand 
why we would need separate query classes for this.

Uwe

-----
Uwe Schindler
Achterdiek 19, D-28357 Bremen
https://www.thetaphi.de
eMail: u...@thetaphi.de

> -----Original Message-----
> From: Stamatis Zampetakis <zabe...@gmail.com>
> Sent: Monday, December 9, 2019 10:42 AM
> To: java-user@lucene.apache.org
> Subject: Re: Use custom score in ConstantScoreQuery
> 
> Thanks for you reply Adrien!
> Can you clarify what is the second way?
> At the moment I haven't found a way (apart from creating my own Query
> classes) to say that a query will always return a score of 0.5 for each
> document.
> 
> On Mon, Dec 9, 2019 at 8:16 AM Adrien Grand <jpou...@gmail.com> wrote:
> 
> > Hi Stamatis,
> >
> > I personally like the current way things work. If we added the ability
> > to set a custom score on ConstantScoreQuery, then we'd end up with two
> > ways to do the same thing, which I like to avoid whenever possible.
> >
> > On Sun, Dec 8, 2019 at 10:07 PM Stamatis Zampetakis
> <zabe...@gmail.com>
> > wrote:
> > >
> > > Small reminder. Any input on this?
> > >
> > > Thanks,
> > > Stamatis
> > >
> > > On Mon, Dec 2, 2019 at 12:10 PM Stamatis Zampetakis
> <zabe...@gmail.com>
> > > wrote:
> > >
> > > > Hi all,
> > > >
> > > > Currently ConstantScoreQuery [1] returns a constant score equal to 1
> > for
> > > > every document that matches the query.
> > > >
> > > > I would like to use the ConstantScoreQuery but with a different score
> > > > value that I can pass explicitly (via the constructor for instance).
> > > >
> > > > This change may also benefit some other parts of Lucene where a
> > > > ConstantScoreQuery is wrapped around a BoostQuery simply for
> returning
> > a
> > > > score of zero [2][3].
> > > >
> > > > Does this change make sense? Shall I create a JIRA for it?
> > > >
> > > > Best,
> > > > Stamatis
> > > >
> > > > [1]
> > > >
> > https://github.com/apache/lucene-
> solr/blob/master/lucene/core/src/java/org/apache/lucene/search/Constant
> ScoreQuery.java
> > > > [2]
> > > >
> > https://github.com/apache/lucene-
> solr/blob/1d238c844e45f088a942aec14750c186c7a66d92/lucene/core/src/ja
> va/org/apache/lucene/search/BooleanQuery.java#L253
> > > > [3]
> > > >
> > https://github.com/apache/lucene-
> solr/blob/1d238c844e45f088a942aec14750c186c7a66d92/lucene/core/src/ja
> va/org/apache/lucene/search/BoostQuery.java#L97
> > > >
> >
> >
> >
> > --
> > Adrien
> >
> > ---------------------------------------------------------------------
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> > For additional commands, e-mail: java-user-h...@lucene.apache.org
> >
> >


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