org.elasticsearch.common.lucene.search.function

Class ScoreFunction

java.lang.Object

org.elasticsearch.common.lucene.search.function.ScoreFunction

Direct Known Subclasses:

BoostScoreFunction, DecayFunctionParser.AbstractDistanceScoreFunction, FieldValueFactorFunction, RandomScoreFunction, ScriptScoreFunction, WeightFactorFunction

public abstract class ScoreFunction
extends Object

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ScoreFunction(CombineFunction scoreCombiner)

Method Summary

Methods

Modifier and Type	Method and Description
CombineFunction	getDefaultScoreCombiner()
abstract LeafScoreFunction	getLeafScoreFunction(org.apache.lucene.index.LeafReaderContext ctx)
abstract boolean	needsScores() Indicates if document scores are needed by this function.

Methods inherited from class java.lang.Object

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

Constructor Detail

ScoreFunction

protected ScoreFunction(CombineFunction scoreCombiner)

Method Detail

getDefaultScoreCombiner

public CombineFunction getDefaultScoreCombiner()

getLeafScoreFunction

public abstract LeafScoreFunction getLeafScoreFunction(org.apache.lucene.index.LeafReaderContext ctx)
                                                throws IOException

Throws:

IOException

needsScores

public abstract boolean needsScores()

Indicates if document scores are needed by this function.

Returns:

true if scores are needed.