Package org.apache.lucene.search.join
Class ToParentBlockJoinQuery.BlockJoinWeight
- java.lang.Object
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- org.apache.lucene.search.Weight
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- org.apache.lucene.search.FilterWeight
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- org.apache.lucene.search.join.ToParentBlockJoinQuery.BlockJoinWeight
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- All Implemented Interfaces:
SegmentCacheable
- Enclosing class:
- ToParentBlockJoinQuery
private static class ToParentBlockJoinQuery.BlockJoinWeight extends FilterWeight
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.search.Weight
Weight.DefaultBulkScorer, Weight.StartDISIWrapper
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Field Summary
Fields Modifier and Type Field Description private BitSetProducer
parentsFilter
private ScoreMode
scoreMode
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Fields inherited from class org.apache.lucene.search.FilterWeight
in
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Fields inherited from class org.apache.lucene.search.Weight
parentQuery
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Constructor Summary
Constructors Constructor Description BlockJoinWeight(Query joinQuery, Weight childWeight, BitSetProducer parentsFilter, ScoreMode scoreMode)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Explanation
explain(LeafReaderContext context, int doc)
An explanation of the score computation for the named document.Matches
matches(LeafReaderContext context, int doc)
ReturnsMatches
for a specific document, ornull
if the document does not match the parent query A query match that contains no position information (for example, a Point or DocValues query) will returnMatchesUtils.MATCH_WITH_NO_TERMS
Scorer
scorer(LeafReaderContext context)
Returns aScorer
which can iterate in order over all matching documents and assign them a score.ScorerSupplier
scorerSupplier(LeafReaderContext context)
Optional method.-
Methods inherited from class org.apache.lucene.search.FilterWeight
extractTerms, isCacheable
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Methods inherited from class org.apache.lucene.search.Weight
bulkScorer, getQuery
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Field Detail
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parentsFilter
private final BitSetProducer parentsFilter
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scoreMode
private final ScoreMode scoreMode
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Constructor Detail
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BlockJoinWeight
public BlockJoinWeight(Query joinQuery, Weight childWeight, BitSetProducer parentsFilter, ScoreMode scoreMode)
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Method Detail
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scorer
public Scorer scorer(LeafReaderContext context) throws java.io.IOException
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:
java.io.IOException
- if there is a low-level I/O error
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scorerSupplier
public ScorerSupplier scorerSupplier(LeafReaderContext context) throws java.io.IOException
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:
java.io.IOException
- See Also:
Weight.scorer(org.apache.lucene.index.LeafReaderContext)
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explain
public Explanation explain(LeafReaderContext context, int doc) throws java.io.IOException
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:
java.io.IOException
- if anIOException
occurs
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matches
public Matches matches(LeafReaderContext context, int doc) throws java.io.IOException
Description copied from class:Weight
ReturnsMatches
for a specific document, ornull
if the document does not match the parent query A query match that contains no position information (for example, a Point or DocValues query) will returnMatchesUtils.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:
java.io.IOException
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