org.apache.lucene.analysis.util
Class StemmerUtil

java.lang.Object
  org.apache.lucene.analysis.util.StemmerUtil

public class StemmerUtil
extends Object

Some commonly-used stemming functions

Constructor Summary

StemmerUtil()

Method Summary

static int	delete(char[] s, int pos, int len) Delete a character in-place
static int	deleteN(char[] s, int pos, int len, int nChars) Delete n characters in-place
static boolean	endsWith(char[] s, int len, char[] suffix) Returns true if the character array ends with the suffix.
static boolean	endsWith(char[] s, int len, String suffix) Returns true if the character array ends with the suffix.
static boolean	startsWith(char[] s, int len, String prefix) Returns true if the character array starts with the suffix.

Methods inherited from class java.lang.Object

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

Constructor Detail

StemmerUtil

public StemmerUtil()

Method Detail

startsWith

public static boolean startsWith(char[] s,
                                 int len,
                                 String prefix)

Returns true if the character array starts with the suffix.

Parameters:

s - Input Buffer

len - length of input buffer

prefix - Prefix string to test

Returns:

true if s starts with prefix

endsWith

public static boolean endsWith(char[] s,
                               int len,
                               String suffix)

Returns true if the character array ends with the suffix.

Parameters:

s - Input Buffer

len - length of input buffer

suffix - Suffix string to test

Returns:

true if s ends with suffix

endsWith

public static boolean endsWith(char[] s,
                               int len,
                               char[] suffix)

Returns true if the character array ends with the suffix.

Parameters:

s - Input Buffer

len - length of input buffer

suffix - Suffix string to test

Returns:

true if s ends with suffix

delete

public static 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

deleteN

public static int deleteN(char[] s,
                          int pos,
                          int len,
                          int nChars)

Delete n characters in-place

Parameters:

s - Input Buffer

pos - Position of character to delete

len - Length of input buffer

nChars - number of characters to delete

Returns:

length of input buffer after deletion