Class Utility

SmartChineseAnalyzer utility constants and methods

This is a Lucene.NET EXPERIMENTAL API, use at your own risk
Inheritance
System.Object
Utility
Namespace: Lucene.Net.Analysis.Cn.Smart
Assembly: Lucene.Net.Analysis.SmartCn.dll
Syntax
public class Utility : object

Fields

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COMMON_DELIMITER

Delimiters will be filtered to this character by SegTokenFilter

Declaration
public static readonly char[] COMMON_DELIMITER
Field Value
Type Description
System.Char[]
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END_CHAR_ARRAY

Declaration
public static readonly char[] END_CHAR_ARRAY
Field Value
Type Description
System.Char[]
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MAX_FREQUENCE

Maximum bigram frequency (used in the smoothing function).

Declaration
public static readonly int MAX_FREQUENCE
Field Value
Type Description
System.Int32
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NUMBER_CHAR_ARRAY

Declaration
public static readonly char[] NUMBER_CHAR_ARRAY
Field Value
Type Description
System.Char[]
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SPACES

Space-like characters that need to be skipped: such as space, tab, newline, carriage return.

Declaration
public static readonly string SPACES
Field Value
Type Description
System.String
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START_CHAR_ARRAY

Declaration
public static readonly char[] START_CHAR_ARRAY
Field Value
Type Description
System.Char[]
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STRING_CHAR_ARRAY

Declaration
public static readonly char[] STRING_CHAR_ARRAY
Field Value
Type Description
System.Char[]

Methods

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CompareArray(Char[], Int32, Char[], Int32)

Compare two arrays starting at the specified offsets.

Declaration
public static int CompareArray(char[] larray, int lstartIndex, char[] rarray, int rstartIndex)
Parameters
Type Name Description
System.Char[] larray

left array
System.Int32 lstartIndex

start offset into larray
System.Char[] rarray

right array
System.Int32 rstartIndex

start offset into rarray
Returns
Type Description
System.Int32

0 if the arrays are equal，1 if larray > rarray, -1 if larray < rarray
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CompareArrayByPrefix(Char[], Int32, Char[], Int32)

Compare two arrays, starting at the specified offsets, but treating shortArray as a prefix to longArray. As long as shortArray is a prefix of longArray, return 0. Otherwise, behave as CompareArray(Char[], Int32, Char[], Int32).

Declaration
public static int CompareArrayByPrefix(char[] shortArray, int shortIndex, char[] longArray, int longIndex)
Parameters
Type Name Description
System.Char[] shortArray

prefix array
System.Int32 shortIndex

offset into shortArray
System.Char[] longArray

long array (word)
System.Int32 longIndex

offset into longArray
Returns
Type Description
System.Int32

0 if shortArray is a prefix of longArray, otherwise act as CompareArray(Char[], Int32, Char[], Int32).
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GetCharType(Char)

Return the internal CharType constant of a given character.

Declaration
public static CharType GetCharType(char ch)
Parameters
Type Name Description
System.Char ch

input character
Returns
Type Description
CharType

Constant from CharType describing the character type.
See Also