Class QueryTermScorer

IScorer implementation which scores text fragments by the number of unique query terms found. This class uses the QueryTermExtractor class to process determine the query terms and their boosts to be used.

Inheritance

System.Object

QueryTermScorer

Implements

IScorer

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.Highlight

Assembly: Lucene.Net.Highlighter.dll

Syntax

public class QueryTermScorer : IScorer

Constructors

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QueryTermScorer(WeightedTerm[])

Declaration

public QueryTermScorer(WeightedTerm[] weightedTerms)

Parameters

Type	Name	Description
WeightedTerm[]	weightedTerms

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QueryTermScorer(Query)

Declaration

public QueryTermScorer(Query query)

Parameters

Type	Name	Description
Query	query	a Lucene query (ideally rewritten using Rewrite(IndexReader) before being passed to this class and the searcher)

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QueryTermScorer(Query, IndexReader, String)

Declaration

public QueryTermScorer(Query query, IndexReader reader, string fieldName)

Parameters

Type	Name	Description
Query	query	a Lucene query (ideally rewritten using Rewrite(IndexReader) before being passed to this class and the searcher)
IndexReader	reader	used to compute IDF which can be used to a) score selected fragments better b) use graded highlights eg set font color intensity
System.String	fieldName	the field on which Inverse Document Frequency (IDF) calculations are based

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QueryTermScorer(Query, String)

Declaration

public QueryTermScorer(Query query, string fieldName)

Parameters

Type	Name	Description
Query	query	a Lucene query (ideally rewritten using Rewrite(IndexReader) before being passed to this class and the searcher)
System.String	fieldName	the Field name which is used to match Query terms

Properties

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FragmentScore

Declaration

public virtual float FragmentScore { get; }

Property Value

Type	Description
System.Single

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MaxTermWeight

The highest weighted term (useful for passing to GradientFormatter to set top end of coloring scale.

Declaration

public virtual float MaxTermWeight { get; }

Property Value

Type	Description
System.Single

Methods

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AllFragmentsProcessed()

Declaration

public virtual void AllFragmentsProcessed()

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GetTokenScore()

Declaration

public virtual float GetTokenScore()

Returns

Type	Description
System.Single

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Init(TokenStream)

Declaration

public virtual TokenStream Init(TokenStream tokenStream)

Parameters

Type	Name	Description
TokenStream	tokenStream

Returns

Type	Description
TokenStream

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StartFragment(TextFragment)

Declaration

public virtual void StartFragment(TextFragment newFragment)

Parameters

Type	Name	Description
TextFragment	newFragment

Implements

IScorer