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Posted to dev@lucene.apache.org by "David Smiley (JIRA)" <ji...@apache.org> on 2017/12/18 21:45:02 UTC
[jira] [Commented] (LUCENE-8103) QueryValueSource should use
TwoPhaseIterator
[ https://issues.apache.org/jira/browse/LUCENE-8103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16295721#comment-16295721 ]
David Smiley commented on LUCENE-8103:
--------------------------------------
Ditto for org.apache.lucene.search.DoubleValuesSource.WeightDoubleValuesSource (the newer replacement of QueryValueSource) and the code looks simpler there.
> QueryValueSource should use TwoPhaseIterator
> --------------------------------------------
>
> Key: LUCENE-8103
> URL: https://issues.apache.org/jira/browse/LUCENE-8103
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/other
> Reporter: David Smiley
> Priority: Minor
>
> QueryValueSource (in "queries" module) is a ValueSource representation of a Query; the score is the value. It ought to try to use a TwoPhaseIterator from the query if it can be offered. This will prevent possibly expensive advancing beyond documents that we aren't interested in.
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