Module org.apache.lucene.core
Package org.apache.lucene.search
Class AbstractMultiTermQueryConstantScoreWrapper.RewritingWeight
java.lang.Object
org.apache.lucene.search.Weight
org.apache.lucene.search.ConstantScoreWeight
org.apache.lucene.search.AbstractMultiTermQueryConstantScoreWrapper.RewritingWeight
- All Implemented Interfaces:
SegmentCacheable
- Enclosing class:
AbstractMultiTermQueryConstantScoreWrapper<Q extends MultiTermQuery>
protected abstract static class AbstractMultiTermQueryConstantScoreWrapper.RewritingWeight
extends ConstantScoreWeight
-
Nested Class Summary
Nested classes/interfaces inherited from class org.apache.lucene.search.Weight
Weight.DefaultBulkScorer
-
Field Summary
FieldsModifier and TypeFieldDescriptionprivate final MultiTermQuery
private final ScoreMode
private final IndexSearcher
Fields inherited from class org.apache.lucene.search.Weight
parentQuery
-
Constructor Summary
ConstructorsModifierConstructorDescriptionprotected
RewritingWeight
(MultiTermQuery q, float boost, ScoreMode scoreMode, IndexSearcher searcher) -
Method Summary
Modifier and TypeMethodDescriptionbulkScorer
(LeafReaderContext context) Optional method, to return aBulkScorer
to score the query and send hits to aCollector
.private boolean
collectTerms
(int fieldDocCount, TermsEnum termsEnum, List<AbstractMultiTermQueryConstantScoreWrapper.TermAndState> terms) private static long
estimateCost
(Terms terms, long queryTermsCount) boolean
matches
(LeafReaderContext context, int doc) ReturnsMatches
for a specific document, ornull
if the document does not match the parent queryrewriteAsBooleanQuery
(LeafReaderContext context, List<AbstractMultiTermQueryConstantScoreWrapper.TermAndState> collectedTerms) protected abstract AbstractMultiTermQueryConstantScoreWrapper.WeightOrDocIdSetIterator
rewriteInner
(LeafReaderContext context, int fieldDocCount, Terms terms, TermsEnum termsEnum, List<AbstractMultiTermQueryConstantScoreWrapper.TermAndState> collectedTerms) Rewrite the query as either aWeight
or aDocIdSetIterator
wrapped in aAbstractMultiTermQueryConstantScoreWrapper.WeightOrDocIdSetIterator
.scorer
(LeafReaderContext context) Returns aScorer
which can iterate in order over all matching documents and assign them a score.private Scorer
scorerForIterator
(DocIdSetIterator iterator) scorerSupplier
(LeafReaderContext context) Optional method.Methods inherited from class org.apache.lucene.search.ConstantScoreWeight
explain, score
-
Field Details
-
q
-
scoreMode
-
searcher
-
-
Constructor Details
-
RewritingWeight
protected RewritingWeight(MultiTermQuery q, float boost, ScoreMode scoreMode, IndexSearcher searcher)
-
-
Method Details
-
rewriteInner
protected abstract AbstractMultiTermQueryConstantScoreWrapper.WeightOrDocIdSetIterator rewriteInner(LeafReaderContext context, int fieldDocCount, Terms terms, TermsEnum termsEnum, List<AbstractMultiTermQueryConstantScoreWrapper.TermAndState> collectedTerms) throws IOException Rewrite the query as either aWeight
or aDocIdSetIterator
wrapped in aAbstractMultiTermQueryConstantScoreWrapper.WeightOrDocIdSetIterator
. Before this is called, the weight will attempt to "collect" found terms up to a threshold. If fewer terms than the threshold are found, the query will simply be rewritten into aBooleanQuery
and this method will not be called. This will only be called if it is determined there are more found terms. At the point this method is invoked,termsEnum
will be positioned on the next "uncollected" term. The terms that were already collected will be incollectedTerms
.- Throws:
IOException
-
rewriteAsBooleanQuery
private AbstractMultiTermQueryConstantScoreWrapper.WeightOrDocIdSetIterator rewriteAsBooleanQuery(LeafReaderContext context, List<AbstractMultiTermQueryConstantScoreWrapper.TermAndState> collectedTerms) throws IOException - Throws:
IOException
-
collectTerms
private boolean collectTerms(int fieldDocCount, TermsEnum termsEnum, List<AbstractMultiTermQueryConstantScoreWrapper.TermAndState> terms) throws IOException - Throws:
IOException
-
scorerForIterator
-
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
-
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.- Specified by:
scorer
in classWeight
- 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
-
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 classWeight
- Parameters:
context
- the reader's context to create theMatches
fordoc
- the document's id relative to the given context's reader- Throws:
IOException
-
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:
-
estimateCost
- Throws:
IOException
-
isCacheable
- Returns:
true
if the object can be cached against a given leaf
-