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Posted to dev@lucene.apache.org by "Alan Woodward (JIRA)" <ji...@apache.org> on 2017/11/13 10:58:00 UTC
[jira] [Updated] (LUCENE-6278) Remove Scorer.freq()
[ https://issues.apache.org/jira/browse/LUCENE-6278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alan Woodward updated LUCENE-6278:
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Summary: Remove Scorer.freq() (was: Rationalise Scorer.freq())
> Remove Scorer.freq()
> --------------------
>
> Key: LUCENE-6278
> URL: https://issues.apache.org/jira/browse/LUCENE-6278
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Alan Woodward
> Priority: Minor
> Attachments: LUCENE-6278.patch, LUCENE-6278.patch
>
>
> At the moment, Scorer.freq() does different things depending on the Scorer implementation:
> * TermScorer and the phrase scorers return the frequency of that term or phrase in the current document. TermScorer.freq() is not actually called anywhere (apart from in a couple of tests), and XPhraseScorer.freq() is only called in PhraseWeight.explain()
> * The various Boolean scorers return the number of matching subscorers, and are used for coord calculations.
> I think this is confusing. I propose that we instead add a new coord() method to Scorer that by default returns 1, and that is overridden by the boolean scorers; and that we just remove freq() entirely. PhraseWeight.explain() can call a package-private method on XPhraseScorer.
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