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From Lucas Cotta <lucco...@gmail.com>
Subject Re: How to implement a custom boost function
Date Tue, 04 Oct 2016 05:28:44 GMT
Hi Walter, unfortunately I use pagination so that would not be possible..

Thanks

2016-10-04 0:51 GMT-03:00 Walter Underwood <wunder@wunderwood.org>:

> How about sorting them after you get them back from Solr?
>
> wunder
> Walter Underwood
> wunder@wunderwood.org
> http://observer.wunderwood.org/  (my blog)
>
>
> > On Oct 3, 2016, at 6:45 PM, Lucas Cotta <luccotta@gmail.com> wrote:
> >
> > I actually could also use a custom similarity class that always returns
> 1.0
> > then I could use small boost factors such as ^1, ^2, ^3, etc.
> >
> > But I want to do this only in some specific queries (that may contain
> other
> > fields besides studentId)
> >
> > How could I do this, use the custom similarity class only for some
> queries?
> > Is it possible?
> >
> > Thanks!
> >
> > 2016-10-03 19:49 GMT-03:00 Lucas Cotta <luccotta@gmail.com>:
> >
> >> Hello,
> >>
> >> I'm new in Solr (4.7.2) and I was given the following requirement:
> >>
> >> Given a query such as:
> >>
> >> studentId:(875141 OR 873071 OR 875198 OR 108142 OR 918841 OR 870688 OR
> >> 107920 OR 870637 OR 870636 OR 870635 OR 918792 OR 107721 OR 875078 OR
> >> 875166 OR 875151 OR 918829 OR 918808)
> >>
> >> I want the results to be ordered by the same order the elements were
> >> informed in the query. This would be similar to MySQL's ORDER BY
> >> FIELD(id, 3,2,5,7,8,1).
> >>
> >> I have tried to use term boosting
> >> <https://wiki.apache.org/solr/SolrRelevancyCookbook#
> Boosting_Ranking_Terms>
> >> in the query but that only works when I use big factors like this:
> 875078^100000
> >> OR 875166^10000 OR 875151^1000 OR 918829^100OR 918808^10
> >>
> >> But that would cause the query to be too big in case I have 200 ids for
> >> instance.
> >>
> >> So it seems I need to implement a custom FunctionQuery.
> >> I'm a little lost on how to do that. Could someone please give me an
> idea?
> >> Which classes should my custom class extend from? Where should I place
> this
> >> class? Should I add to Solr project it self and regenerate the JAR?
> >>
> >> Thanks
> >>
>
>

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