Hi Nicola, if you sort it elsewhere, why do you care about sort order then? What you see as result is simple: As there is nothing available for scoring a constant score query returns the results in index order. That's wanted. There is no way to change this "default" order for a TermInSetQuery because it's missing information.
Uwe ----- Uwe Schindler Achterdiek 19, D-28357 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: Nicola Buso <nb...@ebi.ac.uk> > Sent: Monday, June 25, 2018 5:09 PM > To: Uwe Schindler <u...@thetaphi.de>; java-user@lucene.apache.org > Subject: Re: TermInSetQuery keep terms order in results > > Hi Uwe, > > thanks for the reply. TermInSetQuery cover most of my use case: > - thousands of term values (also 100,000) > - no need for scoring, because it's calculated elsewhere > - intersect with normal full text query for further filtering > > Using a TermQuery do I risk to hit the BooleanQuery.getMaxClauseCount() > limit? > > Cheers, > > > Nicola > > > > On Mon, 2018-06-25 at 16:52 +0200, Uwe Schindler wrote: > > Hi, > > > > the TermInSetQuery is a so-called Constant Score Query. It is more > > meant as a filter, so you would need some "real" fulltext query in > > parallel. See the term-in-set query more like the SQL "IN" operator. > > It can be used to pass lots of identifiers to filter results (e.g. > > when you apply access rights or group policies for filtering users to > > your main query as a filter). > > > > As it is a "set", which is by default unordered, the order of terms > > in the set is undefined. Internally TermInSetQuery reorders the terms > > to improve processing speed. > > > > If you need scoring, use TermQuery wrapped by a BooleanQuery. Then > > you can apply some boosts to some terms to improve order (e.g. boost > > term queries coming first) and apply on a field without norms. > > > > TermInSetQuery is fast because it neglects scoring and is just good > > at intersecting the terms dict with the given terms set. > > > > Uwe > > > > ----- > > Uwe Schindler > > Achterdiek 19, D-28357 Bremen > > http://www.thetaphi.de > > eMail: u...@thetaphi.de > > > > > -----Original Message----- > > > From: Nicola Buso <nb...@ebi.ac.uk> > > > Sent: Monday, June 25, 2018 1:23 PM > > > To: java-user@lucene.apache.org > > > Subject: TermInSetQuery keep terms order in results > > > > > > Hi, > > > > > > I need to use the TermInSetQuery, but I would like to keep the > > > sorting > > > of the results based on the term set order provided. Currently > > > seems > > > using a index documents insertion order in the results. > > > > > > Is this already implemented somewhere or do I need to implement a > > > CustomScoreQuery to calculate this score? > > > > > > Cheers, > > > > > > > > > Nicola > > > > > > > > > -- > > > Nicola Buso <nb...@ebi.ac.uk> > > > EMBL-EBI > > > > > > ----------------------------------------------------------------- > > > ---- > > > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
