java.lang.Object
org.apache.lucene.search.ScorerSupplier
org.apache.lucene.search.BooleanScorerSupplier
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate long
private final int
private final int
private final ScoreMode
private final Map
<BooleanClause.Occur, Collection<ScorerSupplier>> private boolean
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Constructor Summary
ConstructorsConstructorDescriptionBooleanScorerSupplier
(Weight weight, Map<BooleanClause.Occur, Collection<ScorerSupplier>> subs, ScoreMode scoreMode, int minShouldMatch, int maxDoc) -
Method Summary
Modifier and TypeMethodDescription(package private) BulkScorer
Optional method: Get a scorer that is optimized for bulk-scoring.private long
long
cost()
Get an estimate of theScorer
that would be returned byScorerSupplier.get(long)
.(package private) static BulkScorer
disableScoring
(BulkScorer scorer) private Scorer
excl
(Scorer main, Collection<ScorerSupplier> prohibited, long leadCost) (package private) BulkScorer
get
(long leadCost) Get theScorer
.private Scorer
getInternal
(long leadCost) private Scorer
opt
(Collection<ScorerSupplier> optional, int minShouldMatch, ScoreMode scoreMode, long leadCost, boolean topLevelScoringClause) (package private) BulkScorer
private Scorer
req
(Collection<ScorerSupplier> requiredNoScoring, Collection<ScorerSupplier> requiredScoring, long leadCost, boolean topLevelScoringClause) Create a new scorer for the given required clauses.private BulkScorer
void
Inform thisScorerSupplier
that its returned scorers produce scores that get passed to the collector, as opposed to partial scores that then need to get combined (e.g.
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Field Details
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subs
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scoreMode
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minShouldMatch
private final int minShouldMatch -
maxDoc
private final int maxDoc -
cost
private long cost -
topLevelScoringClause
private boolean topLevelScoringClause
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Constructor Details
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BooleanScorerSupplier
BooleanScorerSupplier(Weight weight, Map<BooleanClause.Occur, Collection<ScorerSupplier>> subs, ScoreMode scoreMode, int minShouldMatch, int maxDoc)
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Method Details
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computeCost
private long computeCost() -
setTopLevelScoringClause
Description copied from class:ScorerSupplier
Inform thisScorerSupplier
that its returned scorers produce scores that get passed to the collector, as opposed to partial scores that then need to get combined (e.g. summed up). Note that this method also gets called if scores are not requested, e.g. because the score mode isScoreMode.COMPLETE_NO_SCORES
, so implementations should look at both the score mode and this boolean to know whether to prepare for reacting toScorable.setMinCompetitiveScore(float)
calls.- Overrides:
setTopLevelScoringClause
in classScorerSupplier
- Throws:
IOException
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cost
public long cost()Description copied from class:ScorerSupplier
Get an estimate of theScorer
that would be returned byScorerSupplier.get(long)
. This may be a costly operation, so it should only be called if necessary.- Specified by:
cost
in classScorerSupplier
- See Also:
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get
Description copied from class:ScorerSupplier
Get theScorer
. This may not returnnull
and must be called at most once.- Specified by:
get
in classScorerSupplier
- Parameters:
leadCost
- Cost of the scorer that will be used in order to lead iteration. This can be interpreted as an upper bound of the number of times thatDocIdSetIterator.nextDoc()
,DocIdSetIterator.advance(int)
andTwoPhaseIterator.matches()
will be called. Under doubt, passLong.MAX_VALUE
, which will produce aScorer
that has good iteration capabilities.- Throws:
IOException
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getInternal
- Throws:
IOException
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bulkScorer
Description copied from class:ScorerSupplier
Optional method: Get a scorer that is optimized for bulk-scoring. The default implementation iterates matches from theScorer
but some queries can have more efficient approaches for matching all hits.- Overrides:
bulkScorer
in classScorerSupplier
- Throws:
IOException
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booleanScorer
- Throws:
IOException
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disableScoring
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optionalBulkScorer
- Throws:
IOException
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filteredOptionalBulkScorer
- Throws:
IOException
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requiredBulkScorer
- Throws:
IOException
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req
private Scorer req(Collection<ScorerSupplier> requiredNoScoring, Collection<ScorerSupplier> requiredScoring, long leadCost, boolean topLevelScoringClause) throws IOException Create a new scorer for the given required clauses. Note thatrequiredScoring
is a subset ofrequired
containing required clauses that should participate in scoring.- Throws:
IOException
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excl
private Scorer excl(Scorer main, Collection<ScorerSupplier> prohibited, long leadCost) throws IOException - Throws:
IOException
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opt
private Scorer opt(Collection<ScorerSupplier> optional, int minShouldMatch, ScoreMode scoreMode, long leadCost, boolean topLevelScoringClause) throws IOException - Throws:
IOException
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