Class PerFieldSimilarityWrapper

Provides the ability to use a different Similarity for different fields.

Subclasses should implement Get(String) to return an appropriate Similarity (for example, using field-specific parameter values) for the field.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk
Inheritance
System.Object
Similarity
PerFieldSimilarityWrapper
Inherited Members
Namespace: Lucene.Net.Search.Similarities
Assembly: Lucene.Net.dll
Syntax
public abstract class PerFieldSimilarityWrapper : Similarity

Constructors

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PerFieldSimilarityWrapper()

Sole constructor. (For invocation by subclass constructors, typically implicit.)

Declaration
public PerFieldSimilarityWrapper()

Methods

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ComputeNorm(FieldInvertState)

Declaration
public override sealed long ComputeNorm(FieldInvertState state)
Parameters
Type Name Description
FieldInvertState state
Returns
Type Description
System.Int64
Overrides
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ComputeWeight(Single, CollectionStatistics, TermStatistics[])

Declaration
public override sealed Similarity.SimWeight ComputeWeight(float queryBoost, CollectionStatistics collectionStats, params TermStatistics[] termStats)
Parameters
Type Name Description
System.Single queryBoost
CollectionStatistics collectionStats
TermStatistics[] termStats
Returns
Type Description
Similarity.SimWeight
Overrides
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Get(String)

Returns a Similarity for scoring a field.

Declaration
public abstract Similarity Get(string name)
Parameters
Type Name Description
System.String name
Returns
Type Description
Similarity
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GetSimScorer(Similarity.SimWeight, AtomicReaderContext)

Declaration
public override sealed Similarity.SimScorer GetSimScorer(Similarity.SimWeight weight, AtomicReaderContext context)
Parameters
Type Name Description
Similarity.SimWeight weight
AtomicReaderContext context
Returns
Type Description
Similarity.SimScorer
Overrides