org.cdlib.xtf.textIndexer
Class PluralFoldingFilter

Object
  TokenStream
      TokenFilter
          PluralFoldingFilter

public class PluralFoldingFilter
extends TokenFilter

Improves query results by converting plural words to their singular forms.

Author:

Martin Haye

Field Summary

private WordMap

pluralMap Set of words to de-pluralize

Fields inherited from class TokenFilter

input

Constructor Summary

PluralFoldingFilter(TokenStream input, WordMap pluralMap)
Construct a token stream to convert plural words to singular.

Method Summary

Token

next() Retrieve the next token in the stream.

Methods inherited from class TokenFilter

close

Methods inherited from class Object

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

Field Detail

pluralMap

private WordMap pluralMap

Set of words to de-pluralize

Constructor Detail

PluralFoldingFilter

public PluralFoldingFilter(TokenStream input,
                           WordMap pluralMap)

Construct a token stream to convert plural words to singular.

Parameters:

input - Input stream of tokens to process

pluralMap - Mapping of plural words to their singular equivalents.

Method Detail

next

public Token next()
           throws IOException

Retrieve the next token in the stream.

Specified by:

next in class TokenStream

Throws:

IOException