Hi,
Thanks, that seems to be the quickest way. But I did not get the part with
building a DisjunctionMaxQuery from the clauses. I would need to keep it as a
BooleanQuery, wouldn't I, and compare the weights from each clause and nullify
all but the max weight clause?
--
Jan Høydahl, search solution architect
Cominvent AS - www.cominvent.com
Solr Training - www.solrtraining.com
25. feb. 2013 kl. 21:05 skrev Mikhail Khludnev <mkhlud...@griddynamics.com>:
> Jan,
>
> I think it's worth to start from extending LuceneQParser. Then after
> parent's parse() returns a query instance. It can be cast to BooleanQuery,
> after that it's possible to check that all clauses have SHOULD occur, and
> to create an instance of DisjunctionMaxQuery() from the given clauses.
> Am I missing something?
>
>
> On Mon, Feb 25, 2013 at 6:32 PM, Jan Høydahl <jan....@cominvent.com> wrote:
>
>> Hi,
>>
>> A customer sends large, deeply nested boolean queries to Solr using the
>> default (lucene) parser.
>> The default scoring is summing up all the scores. For parts of this query
>> they would like
>> to use the Max score instead of the sum, e.g. for q=+A +B +(C D E) we want
>> the max
>> of C,D,E. I was thinking about writing a MaxScoreQParserPlugin returning
>> the max of any of its clauses,
>> so you could express the business requirement as this query: q=+A +B
>> +_query_:"{!maxscore}C D E",
>> where C D E could in turn be nested boolean expressions.
>>
>> I cannot use DisMax, cause it only returns max across multiple fields, not
>> across multiple clauses.
>>
>> Perhaps something like this exists somewhere? If not, any pointers for
>> where to start, since I'm not
>> intimately familiar with the Scorer/Weight APIs?
>>
>> --
>> Jan Høydahl, search solution architect
>> Cominvent AS - www.cominvent.com
>> Solr Training - www.solrtraining.com
>>
>>
>
>
> --
> Sincerely yours
> Mikhail Khludnev
> Principal Engineer,
> Grid Dynamics
>
> <http://www.griddynamics.com>
> <mkhlud...@griddynamics.com>
