Module org.apache.lucene.core

Package org.apache.lucene.search

Class ScorerUtil

java.lang.Object

org.apache.lucene.search.ScorerUtil

class ScorerUtil
extends Object

Util class for Scorer related methods

Field Summary

Fields

Modifier and Type	Field	Description
private static final Class<?>	DEFAULT_IMPACTS_ENUM_CLASS

Constructor Summary

Constructors

Constructor	Description
ScorerUtil()

Method Summary

Modifier and Type	Method	Description
(package private) static long	costWithMinShouldMatch(LongStream costs, int numScorers, int minShouldMatch)
(package private) static DocIdSetIterator	likelyImpactsEnum(DocIdSetIterator it)	Optimize a DocIdSetIterator for the case when it is likely implemented via an ImpactsEnum.
(package private) static Scorable	likelyTermScorer(Scorable scorable)	Optimize a Scorable for the case when it is likely implemented via a TermScorer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DEFAULT_IMPACTS_ENUM_CLASS

private static final Class<?> DEFAULT_IMPACTS_ENUM_CLASS

Constructor Details

ScorerUtil

ScorerUtil()

Method Details

costWithMinShouldMatch

static long costWithMinShouldMatch(LongStream costs,
 int numScorers,
 int minShouldMatch)

likelyImpactsEnum

static DocIdSetIterator likelyImpactsEnum(DocIdSetIterator it)

Optimize a DocIdSetIterator for the case when it is likely implemented via an ImpactsEnum. This return method only has 2 possible return types, which helps make sure that calls to DocIdSetIterator.nextDoc() and DocIdSetIterator.advance(int) are bimorphic at most and candidate for inlining.

likelyTermScorer

static Scorable likelyTermScorer(Scorable scorable)

Optimize a Scorable for the case when it is likely implemented via a TermScorer. This return method only has 2 possible return types, which helps make sure that calls to Scorable.score() are bimorphic at most and candidate for inlining.