Good suggestion. That would work for simple queries, but won't work in this
case, because the score is deep down a complex query tree and should not always
be applied on root level, only if other boolean conditions nearby match.
--
Jan Høydahl, search solution architect
Cominvent AS - www.cominvent.com
Solr Training - www.solrtraining.com
25. feb. 2013 kl. 23:57 skrev Jack Krupansky <j...@basetechnology.com>:
> Bite the bullet and use a function query for the boost:
> &bf=max(query({!v='field:C'}),query({!v='field:D'}),query({!v='field:E'}))
>
> -- Jack Krupansky
>
> -----Original Message----- From: Jan Høydahl
> Sent: Monday, February 25, 2013 6:32 AM
> To: solr-user@lucene.apache.org
> Subject: Max Score Query parser?
>
> 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
