CharSequenceUtils

java.lang.Object

org.apache.lucene.analysis.ja.completion.CharSequenceUtils

public class CharSequenceUtils extends Object

Utility functions for JapaneseCompletionFilter

Constructor Summary

Constructors

Modifier

Constructor

Description

private

CharSequenceUtils()
Method Summary

Modifier and Type

Method

Description

static boolean

isFullWidthLowercaseAlphabet(char ch)

Checks if a char is a full-width lowercase alphabet

private static boolean

isHalfWidthLowercaseAlphabet(char ch)

Checks if a char is a half-width lowercase alphabet

private static boolean

isHiragana(char ch)

Checks if a char is a Hiragana

static boolean

isKana(CharSequence s)

Checks if a char sequence is composed only of Katakana or hiragana

private static boolean

isKatakana(char ch)

Checks if a char is a Katakana

static boolean

isKatakanaOrHWAlphabets(CharSequence ref)

Checks if a char sequence is composed only of Katakana or lowercase alphabets

static boolean

isLowercaseAlphabets(CharSequence s)

Checks if a char sequence is composed only of lowercase alphabets

static String

toKatakana(CharSequence s)

Convert all hiragana in a string into kanataka

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- CharSequenceUtils
  
  private CharSequenceUtils()
Method Details
- isLowercaseAlphabets
  
  public static boolean isLowercaseAlphabets(CharSequence s)
  
  Checks if a char sequence is composed only of lowercase alphabets
- isKana
  
  public static boolean isKana(CharSequence s)
  
  Checks if a char sequence is composed only of Katakana or hiragana
- isKatakanaOrHWAlphabets
  
  public static boolean isKatakanaOrHWAlphabets(CharSequence ref)
  
  Checks if a char sequence is composed only of Katakana or lowercase alphabets
- isHiragana
  
  private static boolean isHiragana(char ch)
  
  Checks if a char is a Hiragana
- isKatakana
  
  private static boolean isKatakana(char ch)
  
  Checks if a char is a Katakana
- isHalfWidthLowercaseAlphabet
  
  private static boolean isHalfWidthLowercaseAlphabet(char ch)
  
  Checks if a char is a half-width lowercase alphabet
- isFullWidthLowercaseAlphabet
  
  public static boolean isFullWidthLowercaseAlphabet(char ch)
  
  Checks if a char is a full-width lowercase alphabet
- toKatakana
  
  public static String toKatakana(CharSequence s)
  
  Convert all hiragana in a string into kanataka