Class IDFValueSource

Function that returns Idf(long, long) for every document.

Note that the configured Similarity for the field must be a subclass of Lucene.Net.Search.Similarities.TFIDFSimilarity

Note

This API is for internal purposes only and might change in incompatible ways in the next release.

Inheritance

object

ValueSource

DocFreqValueSource

IDFValueSource

Inherited Members

DocFreqValueSource.m_field

DocFreqValueSource.m_indexedField

DocFreqValueSource.m_val

DocFreqValueSource.m_indexedBytes

DocFreqValueSource.GetDescription()

DocFreqValueSource.CreateWeight(IDictionary, IndexSearcher)

DocFreqValueSource.GetHashCode()

DocFreqValueSource.Equals(object)

ValueSource.ToString()

ValueSource.NewContext(IndexSearcher)

ValueSource.GetSortField(bool)

object.Equals(object, object)

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

Namespace: Lucene.Net.Queries.Function.ValueSources

Assembly: Lucene.Net.Queries.dll

Syntax

public class IDFValueSource : DocFreqValueSource

Constructors

IDFValueSource(string, string, string, BytesRef)

Function that returns Idf(long, long) for every document.

Note that the configured Similarity for the field must be a subclass of Lucene.Net.Search.Similarities.TFIDFSimilarity

Note

This API is for internal purposes only and might change in incompatible ways in the next release.

Declaration

public IDFValueSource(string field, string val, string indexedField, BytesRef indexedBytes)

Parameters

Type	Name	Description
string	field
string	val
string	indexedField
BytesRef	indexedBytes

Properties

Name

Function that returns Idf(long, long) for every document.

Note that the configured Similarity for the field must be a subclass of Lucene.Net.Search.Similarities.TFIDFSimilarity

Note

This API is for internal purposes only and might change in incompatible ways in the next release.

Declaration

public override string Name { get; }

Property Value

Type	Description
string

Overrides

DocFreqValueSource.Name

Methods

GetValues(IDictionary, AtomicReaderContext)

Gets the values for this reader and the context that was previously passed to CreateWeight(IDictionary, IndexSearcher)

Declaration

public override FunctionValues GetValues(IDictionary context, AtomicReaderContext readerContext)

Parameters

Type	Name	Description
IDictionary	context
AtomicReaderContext	readerContext

Returns

Type	Description
FunctionValues

Overrides

DocFreqValueSource.GetValues(IDictionary, AtomicReaderContext)