## org.apache.lucene.analysis.ar
Class ArabicNormalizer

    java.lang.Object
      org.apache.lucene.analysis.ar.ArabicNormalizer

    public class ArabicNormalizer

extends java.lang.Object

Normalizer for Arabic.

Normalization is done in-place for efficiency, operating on a termbuffer.

Normalization is defined as:

- Normalization of hamza with alef seat to a bare alef.
- Normalization of teh marbuta to heh
- Normalization of dotless yeh (alef maksura) to yeh.
- Removal of Arabic diacritics (the harakat)
- Removal of tatweel (stretching character).

Field Summary
`static char` `ALEF`
`static char` `ALEF_HAMZA_ABOVE`
`static char` `ALEF_HAMZA_BELOW`
`static char` `ALEF_MADDA`
`static char` `DAMMA`
`static char` `DAMMATAN`
`static char` `DOTLESS_YEH`
`static char` `FATHA`
`static char` `FATHATAN`
`static char` `HEH`
`static char` `KASRA`
`static char` `KASRATAN`
`static char` `SHADDA`
`static char` `SUKUN`
`static char` `TATWEEL`
`static char` `TEH_MARBUTA`
`static char` `YEH`

Constructor Summary
`ArabicNormalizer()`

Method Summary
`protected int` `delete(char[] s, int pos, int len)` Delete a character in-place
`int` `normalize(char[] s, int len)` Normalize an input buffer of Arabic text

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

Field Detail

### ALEF

    public static final char ALEF

See Also:
  Constant Field Values

### ALEF_MADDA

    public static final char ALEF_MADDA

See Also:
  Constant Field Values

### ALEF_HAMZA_ABOVE

    public static final char ALEF_HAMZA_ABOVE

See Also:
  Constant Field Values

### ALEF_HAMZA_BELOW

    public static final char ALEF_HAMZA_BELOW

See Also:
  Constant Field Values

### YEH

    public static final char YEH

See Also:
  Constant Field Values

### DOTLESS_YEH

    public static final char DOTLESS_YEH

See Also:
  Constant Field Values

### TEH_MARBUTA

    public static final char TEH_MARBUTA

See Also:
  Constant Field Values

### HEH

    public static final char HEH

See Also:
  Constant Field Values

### TATWEEL

    public static final char TATWEEL

See Also:
  Constant Field Values

### FATHATAN

    public static final char FATHATAN

See Also:
  Constant Field Values

### DAMMATAN

    public static final char DAMMATAN

See Also:
  Constant Field Values

### KASRATAN

    public static final char KASRATAN

See Also:
  Constant Field Values

### FATHA

    public static final char FATHA

See Also:
  Constant Field Values

### DAMMA

    public static final char DAMMA

See Also:
  Constant Field Values

### KASRA

    public static final char KASRA

See Also:
  Constant Field Values

### SHADDA

    public static final char SHADDA

See Also:
  Constant Field Values

### SUKUN

    public static final char SUKUN

See Also:
  Constant Field Values

Constructor Detail

### ArabicNormalizer

    public ArabicNormalizer()

Method Detail

### normalize

    public int normalize(char[] s,
                         int len)

  Normalize an input buffer of Arabic text

  Parameters:
    `s` - input buffer
    `len` - length of input buffer
  Returns:
    length of input buffer after normalization

### delete

    protected int delete(char[] s,
                         int pos,
                         int len)

  Delete a character in-place

  Parameters:
    `s` - Input Buffer
    `pos` - Position of character to delete
    `len` - length of input buffer
  Returns:
    length of input buffer after deletion

Copyright © 2000-2011 Apache Software Foundation. All Rights Reserved.