java.lang.Object
org.apache.lucene.search.Scorable
org.apache.lucene.search.Scorer
org.apache.lucene.queries.spans.SpanScorer
- Direct Known Subclasses:
PayloadScoreQuery.PayloadSpanScorer
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Nested Class Summary
Nested classes/interfaces inherited from class org.apache.lucene.search.Scorable
Scorable.ChildScorable
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Field Summary
FieldsModifier and TypeFieldDescriptionprotected final LeafSimScorer
private float
accumulated sloppy freq (computed in setFreqCurrentDoc)private int
protected final Spans
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Constructor Summary
ConstructorsConstructorDescriptionSpanScorer
(SpanWeight weight, Spans spans, LeafSimScorer docScorer) Sole constructor. -
Method Summary
Modifier and TypeMethodDescriptionint
docID()
Returns the doc ID that is currently being scored.private void
Ensure setFreqCurrentDoc is called, if not already called for the current doc.float
getMaxScore
(int upTo) Return the maximum score that documents between the lasttarget
that this iterator wasshallow-advanced
to included andupTo
included.getSpans()
return the Spans for this Scorer *iterator()
Return aDocIdSetIterator
over matching documents.final float
score()
Returns the score of the current document matching the query.protected float
Score the current doc.protected final void
Setsfreq
for the current document.(package private) final float
Returns the intermediate "sloppy freq" adjusted for edit distanceOptional method: Return aTwoPhaseIterator
view of thisScorer
.Methods inherited from class org.apache.lucene.search.Scorer
advanceShallow, getWeight
Methods inherited from class org.apache.lucene.search.Scorable
getChildren, setMinCompetitiveScore, smoothingScore
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Field Details
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spans
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docScorer
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freq
private float freqaccumulated sloppy freq (computed in setFreqCurrentDoc) -
lastScoredDoc
private int lastScoredDoc
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Constructor Details
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SpanScorer
Sole constructor.
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Method Details
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getSpans
return the Spans for this Scorer * -
docID
public int docID()Description copied from class:Scorable
Returns the doc ID that is currently being scored. -
iterator
Description copied from class:Scorer
Return aDocIdSetIterator
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.
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twoPhaseIterator
Description copied from class:Scorer
Optional method: Return aTwoPhaseIterator
view of thisScorer
. A return value ofnull
indicates that two-phase iteration is not supported.Note that the returned
TwoPhaseIterator
'sapproximation
must advance synchronously with theScorer.iterator()
: advancing the approximation must advance the iterator and vice-versa.Implementing this method is typically useful on
Scorer
s that have a high per-document overhead in order to confirm matches.The default implementation returns
null
.- Overrides:
twoPhaseIterator
in classScorer
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scoreCurrentDoc
Score the current doc. The default implementation scores the doc with the similarity using the slop-adjustedfreq
.- Throws:
IOException
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setFreqCurrentDoc
Setsfreq
for the current document.This will be called at most once per document.
- Throws:
IOException
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ensureFreq
Ensure setFreqCurrentDoc is called, if not already called for the current doc.- Throws:
IOException
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score
Description copied from class:Scorable
Returns the score of the current document matching the query.- Specified by:
score
in classScorable
- Throws:
IOException
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getMaxScore
Description copied from class:Scorer
Return the maximum score that documents between the lasttarget
that this iterator wasshallow-advanced
to included andupTo
included.- Specified by:
getMaxScore
in classScorer
- Throws:
IOException
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sloppyFreq
Returns the intermediate "sloppy freq" adjusted for edit distance- Throws:
IOException
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