Class JapaneseKatakanaStemFilter

A TokenFilter that normalizes common katakana spelling variations ending in a long sound character by removing this character (U+30FC). Only katakana words longer than a minimum length are stemmed (default is four).

Inheritance

System.Object

AttributeSource

TokenStream

TokenFilter

JapaneseKatakanaStemFilter

Implements

System.IDisposable

Inherited Members

TokenFilter.m_input

TokenFilter.End()

TokenFilter.Dispose(Boolean)

TokenFilter.Reset()

TokenStream.Dispose()

AttributeSource.GetAttributeFactory()

AttributeSource.GetAttributeClassesEnumerator()

AttributeSource.GetAttributeImplsEnumerator()

AttributeSource.AddAttributeImpl(Attribute)

AttributeSource.AddAttribute<T>()

AttributeSource.HasAttributes

AttributeSource.HasAttribute<T>()

AttributeSource.GetAttribute<T>()

AttributeSource.ClearAttributes()

AttributeSource.CaptureState()

AttributeSource.RestoreState(AttributeSource.State)

AttributeSource.GetHashCode()

AttributeSource.Equals(Object)

AttributeSource.ReflectAsString(Boolean)

AttributeSource.ReflectWith(IAttributeReflector)

AttributeSource.CloneAttributes()

AttributeSource.CopyTo(AttributeSource)

AttributeSource.ToString()

System.Object.Equals(System.Object, System.Object)

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

Namespace: Lucene.Net.Analysis.Ja

Assembly: Lucene.Net.Analysis.Kuromoji.dll

Syntax

public sealed class JapaneseKatakanaStemFilter : TokenFilter, IDisposable

Remarks

Note that only full-width katakana characters are supported. Please use a CJKWidthFilter to convert half-width katakana to full-width before using this filter.

In order to prevent terms from being stemmed, use an instance of SetKeywordMarkerFilter or a custom TokenFilter that sets the IKeywordAttribute before this TokenStream.

Constructors

JapaneseKatakanaStemFilter(TokenStream)

Declaration

public JapaneseKatakanaStemFilter(TokenStream input)

Parameters

Type	Name	Description
TokenStream	input

JapaneseKatakanaStemFilter(TokenStream, Int32)

Declaration

public JapaneseKatakanaStemFilter(TokenStream input, int minimumLength)

Parameters

Type	Name	Description
TokenStream	input
System.Int32	minimumLength

Fields

DEFAULT_MINIMUM_LENGTH

Declaration

public static readonly int DEFAULT_MINIMUM_LENGTH

Field Value

Type	Description
System.Int32

Methods

IncrementToken()

Declaration

public override bool IncrementToken()

Returns

Type	Description
System.Boolean

Overrides

TokenStream.IncrementToken()

Implements

System.IDisposable