org.apache.solr.ltr.feature

Class Feature.FeatureWeight.FeatureScorer

java.lang.Object

org.apache.lucene.search.Scorer

org.apache.solr.ltr.feature.Feature.FeatureWeight.FeatureScorer

Direct Known Subclasses:

Feature.FeatureWeight.ValueFeatureScorer, FieldLengthFeature.FieldLengthFeatureWeight.FieldLengthFeatureScorer, FieldValueFeature.FieldValueFeatureWeight.FieldValueFeatureScorer, OriginalScoreFeature.OriginalScoreWeight.OriginalScoreScorer, SolrFeature.SolrFeatureWeight.SolrFeatureScorer

Enclosing class:

Feature.FeatureWeight

public abstract class Feature.FeatureWeight.FeatureScorer
extends Scorer

A 'recipe' for computing a feature

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
protected DocIdSetIterator	itr
protected String	name

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

weight

Constructor Summary

Constructors

Constructor and Description
FeatureScorer(Feature.FeatureWeight weight, DocIdSetIterator itr)

Method Summary

Modifier and Type	Method and Description
int	docID()
DocInfo	getDocInfo()
DocIdSetIterator	iterator()
abstract float	score()
void	setDocInfo(DocInfo docInfo) Used to provide context from initial score steps to later reranking steps.

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

getChildren, getWeight, twoPhaseIterator

Methods inherited from class java.lang.Object

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

Field Detail

name

protected final String name

itr

protected final DocIdSetIterator itr

Constructor Detail

FeatureScorer

public FeatureScorer(Feature.FeatureWeight weight,
                     DocIdSetIterator itr)

Method Detail

score

public abstract float score()
                     throws IOException

Specified by:

score in class Scorer

Throws:

IOException

setDocInfo

public void setDocInfo(DocInfo docInfo)

Used to provide context from initial score steps to later reranking steps.

getDocInfo

public DocInfo getDocInfo()

docID

public int docID()

Specified by:

docID in class Scorer

iterator

public DocIdSetIterator iterator()

Specified by:

iterator in class Scorer