Package org.apache.lucene.search
Class MultiTermQueryConstantScoreWrapper<Q extends MultiTermQuery>
java.lang.Object
org.apache.lucene.search.Query
org.apache.lucene.search.MultiTermQueryConstantScoreWrapper<Q>
- All Implemented Interfaces:
Accountable
final class MultiTermQueryConstantScoreWrapper<Q extends MultiTermQuery>
extends Query
implements Accountable
This class also provides the functionality behind
MultiTermQuery.CONSTANT_SCORE_REWRITE
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It tries to rewrite per-segment as a boolean query that returns a constant score and otherwise
fills a bit set with matches and builds a Scorer on top of this bit set.-
Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionprivate static class
private static class
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Field Summary
FieldsFields inherited from interface org.apache.lucene.util.Accountable
NULL_ACCOUNTABLE
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptioncreateWeight
(IndexSearcher searcher, ScoreMode scoreMode, float boost) Expert: Constructs an appropriate Weight implementation for this query.final boolean
Override and implement query instance equivalence properly in a subclass.final String
getField()
Returns the field name for this querygetQuery()
Returns the encapsulated queryfinal int
hashCode()
Override and implement query hash code properly in a subclass.long
Return the memory usage of this object in bytes.Prints a query to a string, withfield
assumed to be the default field and omitted.void
visit
(QueryVisitor visitor) Recurse through the query tree, visiting any child queriesMethods inherited from class org.apache.lucene.search.Query
classHash, rewrite, sameClassAs, toString
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface org.apache.lucene.util.Accountable
getChildResources
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Field Details
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BOOLEAN_REWRITE_TERM_COUNT_THRESHOLD
private static final int BOOLEAN_REWRITE_TERM_COUNT_THRESHOLD- See Also:
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query
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Constructor Details
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MultiTermQueryConstantScoreWrapper
Wrap aMultiTermQuery
as a Filter.
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Method Details
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ramBytesUsed
public long ramBytesUsed()Description copied from interface:Accountable
Return the memory usage of this object in bytes. Negative values are illegal.- Specified by:
ramBytesUsed
in interfaceAccountable
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toString
Description copied from class:Query
Prints a query to a string, withfield
assumed to be the default field and omitted. -
equals
Description copied from class:Query
Override and implement query instance equivalence properly in a subclass. This is required so thatQueryCache
works properly.Typically a query will be equal to another only if it's an instance of the same class and its document-filtering properties are identical that other instance. Utility methods are provided for certain repetitive code.
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hashCode
public final int hashCode()Description copied from class:Query
Override and implement query hash code properly in a subclass. This is required so thatQueryCache
works properly. -
getQuery
Returns the encapsulated query -
getField
Returns the field name for this query -
createWeight
public Weight createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost) throws IOException Description copied from class:Query
Expert: Constructs an appropriate Weight implementation for this query.Only implemented by primitive queries, which re-write to themselves.
- Overrides:
createWeight
in classQuery
scoreMode
- How the produced scorers will be consumed.boost
- The boost that is propagated by the parent queries.- Throws:
IOException
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visit
Description copied from class:Query
Recurse through the query tree, visiting any child queries
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