Module org.apache.lucene.core

Package org.apache.lucene.search

Class SynonymQuery.SynonymScorer

java.lang.Object

org.apache.lucene.search.Scorable

org.apache.lucene.search.Scorer

org.apache.lucene.search.SynonymQuery.SynonymScorer

Enclosing class:

SynonymQuery

private static class SynonymQuery.SynonymScorer
extends Scorer

Nested Class Summary

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

Scorable.ChildScorable

Field Summary

Fields

Modifier and Type	Field	Description
private final ImpactsDISI	impactsDisi
private final DocIdSetIterator	iterator
private final MaxScoreCache	maxScoreCache
private final DisiPriorityQueue	queue
private final LeafSimScorer	simScorer

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

weight

Constructor Summary

Constructors

Constructor	Description
SynonymScorer(Weight weight, DisiPriorityQueue queue, DocIdSetIterator iterator, ImpactsDISI impactsDisi, LeafSimScorer simScorer)

Method Summary

Modifier and Type	Method	Description
int	advanceShallow(int target)	Advance to the block of documents that contains target in order to get scoring information about this block.
int	docID()	Returns the doc ID that is currently being scored.
(package private) float	freq()
float	getMaxScore(int upTo)	Return the maximum score that documents between the last target that this iterator was shallow-advanced to included and upTo included.
DocIdSetIterator	iterator()	Return a DocIdSetIterator over matching documents.
float	score()	Returns the score of the current document matching the query.
void	setMinCompetitiveScore(float minScore)	Optional method: Tell the scorer that its iterator may safely ignore all documents whose score is less than the given minScore.

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

getWeight, twoPhaseIterator

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

getChildren, smoothingScore

Methods inherited from class java.lang.Object

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

Field Details

queue

private final DisiPriorityQueue queue

iterator

private final DocIdSetIterator iterator

maxScoreCache

private final MaxScoreCache maxScoreCache

impactsDisi

private final ImpactsDISI impactsDisi

simScorer

private final LeafSimScorer simScorer

Constructor Details

SynonymScorer

SynonymScorer(Weight weight,
 DisiPriorityQueue queue,
 DocIdSetIterator iterator,
 ImpactsDISI impactsDisi,
 LeafSimScorer simScorer)

Method Details

docID

public int docID()

Description copied from class: Scorable

Returns the doc ID that is currently being scored.

Specified by:

docID in class Scorable

freq

float freq()
    throws IOException

Throws:

IOException

score

public float score()
            throws IOException

Description copied from class: Scorable

Returns the score of the current document matching the query.

Specified by:

score in class Scorable

Throws:

IOException

iterator

public DocIdSetIterator iterator()

Description copied from class: Scorer

Return a DocIdSetIterator over matching documents.

The returned iterator will either be positioned on -1 if no documents have been scored yet, DocIdSetIterator.NO_MORE_DOCS if all documents have been scored already, or the last document id that has been scored otherwise.

The returned iterator is a view: calling this method several times will return iterators that have the same state.

Specified by:

iterator in class Scorer

getMaxScore

public float getMaxScore(int upTo)
                  throws IOException

Description copied from class: Scorer

Return the maximum score that documents between the last target that this iterator was shallow-advanced to included and upTo included.

Specified by:

getMaxScore in class Scorer

Throws:

IOException

advanceShallow

public int advanceShallow(int target)
                   throws IOException

Description copied from class: Scorer

Advance to the block of documents that contains target in order to get scoring information about this block. This method is implicitly called by DocIdSetIterator.advance(int) and DocIdSetIterator.nextDoc() on the returned doc ID. Calling this method doesn't modify the current DocIdSetIterator.docID(). It returns a number that is greater than or equal to all documents contained in the current block, but less than any doc IDS of the next block. target must be >= Scorable.docID() as well as all targets that have been passed to Scorer.advanceShallow(int) so far.

Overrides:

advanceShallow in class Scorer

Throws:

IOException

setMinCompetitiveScore

public void setMinCompetitiveScore(float minScore)

Description copied from class: Scorable

Optional method: Tell the scorer that its iterator may safely ignore all documents whose score is less than the given minScore. This is a no-op by default.

This method may only be called from collectors that use ScoreMode.TOP_SCORES, and successive calls may only set increasing values of minScore.

Overrides:

setMinCompetitiveScore in class Scorable