Package org.apache.lucene.search
Class ConstantScoreWeight
- java.lang.Object
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- org.apache.lucene.search.Weight
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- org.apache.lucene.search.ConstantScoreWeight
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- All Implemented Interfaces:
SegmentCacheable
public abstract class ConstantScoreWeight extends Weight
A Weight that has a constant score equal to the boost of the wrapped query. This is typically useful when building queries which do not produce meaningful scores and are mostly useful for filtering.- NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.search.Weight
Weight.DefaultBulkScorer
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Field Summary
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Fields inherited from class org.apache.lucene.search.Weight
parentQuery
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Constructor Summary
Constructors Modifier Constructor Description protectedConstantScoreWeight(Query query, float score)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Explanationexplain(LeafReaderContext context, int doc)An explanation of the score computation for the named document.protected floatscore()Return the score produced by thisWeight.-
Methods inherited from class org.apache.lucene.search.Weight
bulkScorer, count, getQuery, matches, scorer, scorerSupplier
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.lucene.search.SegmentCacheable
isCacheable
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Constructor Detail
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ConstantScoreWeight
protected ConstantScoreWeight(Query query, float score)
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Method Detail
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score
protected final float score()
Return the score produced by thisWeight.
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explain
public Explanation explain(LeafReaderContext context, int doc) throws IOException
Description copied from class:WeightAn explanation of the score computation for the named document.- Specified by:
explainin classWeight- Parameters:
context- the readers context to create theExplanationfor.doc- the document's id relative to the given context's reader- Returns:
- an Explanation for the score
- Throws:
IOException- if anIOExceptionoccurs
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