Package org.apache.lucene.search.join
Class ToParentBlockJoinQuery.BlockJoinWeight
java.lang.Object
org.apache.lucene.search.Weight
org.apache.lucene.search.FilterWeight
org.apache.lucene.search.join.ToParentBlockJoinQuery.BlockJoinWeight
- All Implemented Interfaces:
SegmentCacheable
- Enclosing class:
- ToParentBlockJoinQuery
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Nested Class Summary
Nested classes/interfaces inherited from class org.apache.lucene.search.Weight
Weight.DefaultBulkScorer
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Field Summary
FieldsFields inherited from class org.apache.lucene.search.FilterWeight
in
Fields inherited from class org.apache.lucene.search.Weight
parentQuery
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Constructor Summary
ConstructorsConstructorDescriptionBlockJoinWeight
(Query joinQuery, Weight childWeight, BitSetProducer parentsFilter, ScoreMode scoreMode) -
Method Summary
Modifier and TypeMethodDescriptionexplain
(LeafReaderContext context, int doc) An explanation of the score computation for the named document.matches
(LeafReaderContext context, int doc) ReturnsMatches
for a specific document, ornull
if the document does not match the parent queryscorer
(LeafReaderContext context) Returns aScorer
which can iterate in order over all matching documents and assign them a score.scorerSupplier
(LeafReaderContext context) Optional method.Methods inherited from class org.apache.lucene.search.FilterWeight
isCacheable
Methods inherited from class org.apache.lucene.search.Weight
bulkScorer, count, getQuery
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Field Details
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parentsFilter
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scoreMode
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Constructor Details
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BlockJoinWeight
public BlockJoinWeight(Query joinQuery, Weight childWeight, BitSetProducer parentsFilter, ScoreMode scoreMode)
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Method Details
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scorer
Description copied from class:Weight
Returns aScorer
which can iterate in order over all matching documents and assign them a score.NOTE: null can be returned if no documents will be scored by this query.
NOTE: The returned
Scorer
does not haveLeafReader.getLiveDocs()
applied, they need to be checked on top.- Overrides:
scorer
in classFilterWeight
- Parameters:
context
- theLeafReaderContext
for which to return theScorer
.- Returns:
- a
Scorer
which scores documents in/out-of order. - Throws:
IOException
- if there is a low-level I/O error
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scorerSupplier
Description copied from class:Weight
Optional method. Get aScorerSupplier
, which allows to know the cost of theScorer
before building it. The default implementation callsWeight.scorer(org.apache.lucene.index.LeafReaderContext)
and builds aScorerSupplier
wrapper around it.- Overrides:
scorerSupplier
in classWeight
- Throws:
IOException
- See Also:
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explain
Description copied from class:Weight
An explanation of the score computation for the named document.- Overrides:
explain
in classFilterWeight
- Parameters:
context
- the readers context to create theExplanation
for.doc
- the document's id relative to the given context's reader- Returns:
- an Explanation for the score
- Throws:
IOException
- if anIOException
occurs
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matches
Description copied from class:Weight
ReturnsMatches
for a specific document, ornull
if the document does not match the parent queryA query match that contains no position information (for example, a Point or DocValues query) will return
MatchesUtils.MATCH_WITH_NO_TERMS
- Overrides:
matches
in classFilterWeight
- Parameters:
context
- the reader's context to create theMatches
fordoc
- the document's id relative to the given context's reader- Throws:
IOException
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