Module org.apache.lucene.join
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 TypeMethodDescriptionbulkScorer
(LeafReaderContext context) Optional method, to return aBulkScorer
to score the query and send hits to aCollector
.explain
(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
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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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bulkScorer
Description copied from class:Weight
Optional method, to return aBulkScorer
to score the query and send hits to aCollector
. Only queries that have a different top-level approach need to override this; the default implementation pulls a normalScorer
and iterates and collects the resulting hits which are not marked as deleted.- Overrides:
bulkScorer
in classWeight
- Parameters:
context
- theLeafReaderContext
for which to return theScorer
.- Returns:
- a
BulkScorer
which scores documents and passes them to a collector. - Throws:
IOException
- if there is a low-level I/O error
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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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