org.apache.lucene.queries

Class CustomScoreQuery.CustomScorer

java.lang.Object

org.apache.lucene.search.Scorer

org.apache.lucene.search.FilterScorer

org.apache.lucene.queries.CustomScoreQuery.CustomScorer

Enclosing class:

CustomScoreQuery

private class CustomScoreQuery.CustomScorer
extends FilterScorer

A scorer that applies a (callback) function on scores of the subQuery.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.search.Scorer

Scorer.ChildScorer

Field Summary

Fields

Modifier and Type	Field and Description
private CustomScoreProvider	provider
private float	qWeight
private Scorer	subQueryScorer
private int	valSrcDocID
private Scorer[]	valSrcScorers
private float[]	vScores

Fields inherited from class org.apache.lucene.search.FilterScorer

in

Fields inherited from class org.apache.lucene.search.Scorer

weight

Constructor Summary

Constructors

Modifier	Constructor and Description
private	CustomScorer(CustomScoreProvider provider, CustomScoreQuery.CustomWeight w, float qWeight, Scorer subQueryScorer, Scorer[] valSrcScorers)

Method Summary

Modifier and Type	Method and Description
java.util.Collection<Scorer.ChildScorer>	getChildren() Returns child sub-scorers
float	score() Returns the score of the current document matching the query.

Methods inherited from class org.apache.lucene.search.FilterScorer

docID, freq, iterator, twoPhaseIterator

Methods inherited from class org.apache.lucene.search.Scorer

getWeight

Methods inherited from class java.lang.Object

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

Field Detail

qWeight

private final float qWeight

subQueryScorer

private final Scorer subQueryScorer

valSrcScorers

private final Scorer[] valSrcScorers

provider

private final CustomScoreProvider provider

vScores

private final float[] vScores

valSrcDocID

private int valSrcDocID

Constructor Detail

CustomScorer

private CustomScorer(CustomScoreProvider provider,
                     CustomScoreQuery.CustomWeight w,
                     float qWeight,
                     Scorer subQueryScorer,
                     Scorer[] valSrcScorers)

Method Detail

score

public float score()
            throws java.io.IOException

Description copied from class: Scorer

Returns the score of the current document matching the query. Initially invalid, until DocIdSetIterator.nextDoc() or DocIdSetIterator.advance(int) is called on the Scorer.iterator() the first time, or when called from within LeafCollector.collect(int).

Overrides:

score in class FilterScorer

Throws:

java.io.IOException

getChildren

public java.util.Collection<Scorer.ChildScorer> getChildren()

Description copied from class: Scorer

Returns child sub-scorers

Overrides:

getChildren in class Scorer