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.

Note

This API is experimental and might change in incompatible ways in the next release.

Inheritance
System.Object
Similarity
PerFieldSimilarityWrapper
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
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
protected PerFieldSimilarityWrapper()

Methods

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ComputeNorm(FieldInvertState)

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