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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2015/12/03 16:46:11 UTC
[jira] [Resolved] (LUCENE-6889) BooleanQuery.rewrite could easily
optimize some simple cases
[ https://issues.apache.org/jira/browse/LUCENE-6889?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adrien Grand resolved LUCENE-6889.
----------------------------------
Resolution: Fixed
Fix Version/s: 5.5
Trunk
> BooleanQuery.rewrite could easily optimize some simple cases
> ------------------------------------------------------------
>
> Key: LUCENE-6889
> URL: https://issues.apache.org/jira/browse/LUCENE-6889
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: Trunk, 5.5
>
> Attachments: LUCENE-6889.patch, LUCENE-6889.patch
>
>
> Follow-up of SOLR-8251: APIs and user interfaces sometimes encourage to write BooleanQuery instances that are not optimal, for instance a typical case that happens often with Solr/Elasticsearch is to send a request that has a MatchAllDocsQuery as a query and some filter, which could be executed more efficiently by directly wrapping the filter into a ConstantScoreQuery.
> Here are some ideas of rewrite operations that BooleanQuery could perform:
> - remove FILTER clauses when they are also a MUST clause
> - rewrite queries of the form "+*:* #filter" to a ConstantScoreQuery(filter)
> - rewrite to a MatchNoDocsQuery when a clause that is a MUST or FILTER clause is also a MUST_NOT clause
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