Class ToParentBlockJoinQuery.BlockJoinScorer
- Enclosing class:
- ToParentBlockJoinQuery
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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 TypeFieldDescriptionprivate final DocIdSetIterator
private final Scorer
private final TwoPhaseIterator
private final ToParentBlockJoinQuery.ParentApproximation
private final BitSet
private final ToParentBlockJoinQuery.ParentTwoPhase
private float
private final ScoreMode
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Constructor Summary
ConstructorsConstructorDescriptionBlockJoinScorer
(Weight weight, Scorer childScorer, BitSet parentBits, ScoreMode scoreMode) -
Method Summary
Modifier and TypeMethodDescriptionint
docID()
Returns the doc ID that is currently being scored.explain
(LeafReaderContext context, Weight childWeight, ScoreMode scoreMode) private String
formatScoreExplanation
(int matches, int start, int end, ScoreMode scoreMode) Returns child sub-scorers positioned on the current documentfloat
getMaxScore
(int upTo) Return the maximum score that documents between the lasttarget
that this iterator wasshallow-advanced
to included andupTo
included.iterator()
Return aDocIdSetIterator
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 givenminScore
.private void
Optional 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
smoothingScore
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Field Details
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childScorer
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parentBits
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scoreMode
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childApproximation
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childTwoPhase
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parentApproximation
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parentTwoPhase
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score
private float score
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Constructor Details
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BlockJoinScorer
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Method Details
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getChildren
Description copied from class:Scorable
Returns child sub-scorers positioned on the current document- Overrides:
getChildren
in classScorable
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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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docID
public int docID()Description copied from class:Scorable
Returns the doc ID that is currently being scored. -
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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setMinCompetitiveScore
Description copied from class:Scorable
Optional method: Tell the scorer that its iterator may safely ignore all documents whose score is less than the givenminScore
. 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 ofminScore
.- Overrides:
setMinCompetitiveScore
in classScorable
- Throws:
IOException
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setScoreAndFreq
- Throws:
IOException
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explain
public Explanation explain(LeafReaderContext context, Weight childWeight, ScoreMode scoreMode) throws IOException - Throws:
IOException
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formatScoreExplanation
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