org.apache.lucene.analysis.fa

Class PersianNormalizer

java.lang.Object

org.apache.lucene.analysis.fa.PersianNormalizer

public class PersianNormalizer
extends Object

Normalizer for Persian.

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

Normalization is defined as:

• Normalization of various heh + hamza forms and heh goal to heh.
• Normalization of farsi yeh and yeh barree to arabic yeh
• Normalization of persian keheh to arabic kaf

Field Summary

Fields

Modifier and Type	Field and Description
static char	FARSI_YEH
static char	HAMZA_ABOVE
static char	HEH
static char	HEH_GOAL
static char	HEH_YEH
static char	KAF
static char	KEHEH
static char	YEH
static char	YEH_BARREE

Constructor Summary

Constructors

Constructor and Description
PersianNormalizer()

Method Summary

Modifier and Type	Method and Description
int	normalize(char[] s, int len) Normalize an input buffer of Persian text

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

YEH

public static final char YEH

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Constant Field Values

FARSI_YEH

public static final char FARSI_YEH

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Constant Field Values

YEH_BARREE

public static final char YEH_BARREE

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Constant Field Values

KEHEH

public static final char KEHEH

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Constant Field Values

KAF

public static final char KAF

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Constant Field Values

HAMZA_ABOVE

public static final char HAMZA_ABOVE

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Constant Field Values

HEH_YEH

public static final char HEH_YEH

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Constant Field Values

HEH_GOAL

public static final char HEH_GOAL

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Constant Field Values

HEH

public static final char HEH

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Constant Field Values

Constructor Detail

PersianNormalizer

public PersianNormalizer()

Method Detail

normalize

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

Normalize an input buffer of Persian text

Parameters:

s - input buffer

len - length of input buffer

Returns:

length of input buffer after normalization