Class FunctionQuery

Returns a score for each document based on a ValueSource, often some function of the value of a field.

Note: This API is experimental and may change in non backward-compatible ways in the future

Inheritance
System.Object
Lucene.Net.Search.Query
FunctionQuery
Inherited Members
Lucene.Net.Search.Query.Boost
Lucene.Net.Search.Query.ToString()
Lucene.Net.Search.Query.Clone()
System.Object.Equals(System.Object, System.Object)
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: Lucene.Net.Queries.Function
Assembly: Lucene.Net.Queries.dll
Syntax
public class FunctionQuery : Query

Constructors

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FunctionQuery(ValueSource)

Declaration
public FunctionQuery(ValueSource func)
Parameters
Type Name Description
ValueSource func

defines the function to be used for scoring

Properties

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ValueSource

Declaration
public virtual ValueSource ValueSource { get; }
Property Value
Type Description
ValueSource

The associated ValueSource

Methods

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CreateWeight(IndexSearcher)

Declaration
public override Weight CreateWeight(IndexSearcher searcher)
Parameters
Type Name Description
Lucene.Net.Search.IndexSearcher searcher
Returns
Type Description
Lucene.Net.Search.Weight
Overrides
Lucene.Net.Search.Query.CreateWeight(Lucene.Net.Search.IndexSearcher)
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Equals(Object)

Returns true if o is equal to this.

Declaration
public override bool Equals(object o)
Parameters
Type Name Description
System.Object o
Returns
Type Description
System.Boolean
Overrides
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ExtractTerms(ISet<Term>)

Declaration
public override void ExtractTerms(ISet<Term> terms)
Parameters
Type Name Description
System.Collections.Generic.ISet<Lucene.Net.Index.Term> terms
Overrides
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GetHashCode()

Returns a hash code value for this object.

Declaration
public override int GetHashCode()
Returns
Type Description
System.Int32
Overrides
Lucene.Net.Search.Query.GetHashCode()
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Rewrite(IndexReader)

Declaration
public override Query Rewrite(IndexReader reader)
Parameters
Type Name Description
Lucene.Net.Index.IndexReader reader
Returns
Type Description
Lucene.Net.Search.Query
Overrides
Lucene.Net.Search.Query.Rewrite(Lucene.Net.Index.IndexReader)
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ToString(String)

Prints a user-readable version of this query.

Declaration
public override string ToString(string field)
Parameters
Type Name Description
System.String field
Returns
Type Description
System.String
Overrides