com.wcohen.secondstring.tokens
Class NGramTokenizer

java.lang.Object
  |
  +--com.wcohen.secondstring.tokens.NGramTokenizer

All Implemented Interfaces:

Tokenizer

public class NGramTokenizer

extends java.lang.Object

implements Tokenizer

Wraps another tokenizer, and adds all computes all ngrams of characters from a single token produced by the inner tokenizer.

Field Summary

static NGramTokenizer

DEFAULT_TOKENIZER

Constructor Summary

NGramTokenizer(int minNGramSize, int maxNGramSize, boolean keepOldTokens, Tokenizer innerTokenizer)

Method Summary

Token	intern(java.lang.String s) Convert a given string into a token
static void	main(java.lang.String[] argv) Test routine
Token[]	tokenize(java.lang.String input) Return tokenized version of a string.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_TOKENIZER

public static NGramTokenizer DEFAULT_TOKENIZER

Constructor Detail

NGramTokenizer

public NGramTokenizer(int minNGramSize,
                      int maxNGramSize,
                      boolean keepOldTokens,
                      Tokenizer innerTokenizer)

Method Detail

tokenize

public Token[] tokenize(java.lang.String input)

Return tokenized version of a string. Tokens are sequences of alphanumerics, or any single punctuation character.

Specified by:

tokenize in interface Tokenizer

intern

public Token intern(java.lang.String s)

Description copied from interface: Tokenizer

Convert a given string into a token

Specified by:

intern in interface Tokenizer

main

public static void main(java.lang.String[] argv)

Test routine