Class IntervalScorer
- java.lang.Object
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- org.apache.lucene.search.Scorable
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- org.apache.lucene.search.Scorer
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- org.apache.lucene.queries.intervals.IntervalScorer
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class IntervalScorer extends Scorer
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.search.Scorable
Scorable.ChildScorable
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Field Summary
Fields Modifier and Type Field Description private float
boost
private float
freq
private IntervalIterator
intervals
private int
lastScoredDoc
private int
minExtent
private Similarity.SimScorer
simScorer
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Constructor Summary
Constructors Constructor Description IntervalScorer(Weight weight, IntervalIterator intervals, int minExtent, float boost, IntervalScoreFunction scoreFunction)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
docID()
Returns the doc ID that is currently being scored.private void
ensureFreq()
(package private) float
freq()
float
getMaxScore(int upTo)
Return the maximum score that documents between the lasttarget
that this iterator wasshallow-advanced
to included andupTo
included.DocIdSetIterator
iterator()
Return aDocIdSetIterator
over matching documents.float
score()
Returns the score of the current document matching the query.TwoPhaseIterator
twoPhaseIterator()
Optional method: Return aTwoPhaseIterator
view of thisScorer
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Methods inherited from class org.apache.lucene.search.Scorer
advanceShallow, getWeight
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Methods inherited from class org.apache.lucene.search.Scorable
getChildren, setMinCompetitiveScore, smoothingScore
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Field Detail
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intervals
private final IntervalIterator intervals
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simScorer
private final Similarity.SimScorer simScorer
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boost
private final float boost
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minExtent
private final int minExtent
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freq
private float freq
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lastScoredDoc
private int lastScoredDoc
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Constructor Detail
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IntervalScorer
IntervalScorer(Weight weight, IntervalIterator intervals, int minExtent, float boost, IntervalScoreFunction scoreFunction)
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Method Detail
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docID
public int docID()
Description copied from class:Scorable
Returns the doc ID that is currently being scored.
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score
public float score() throws java.io.IOException
Description copied from class:Scorable
Returns the score of the current document matching the query.
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freq
float freq() throws java.io.IOException
- Throws:
java.io.IOException
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ensureFreq
private void ensureFreq() throws java.io.IOException
- Throws:
java.io.IOException
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iterator
public DocIdSetIterator 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
public TwoPhaseIterator 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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getMaxScore
public float getMaxScore(int upTo)
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
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