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

Fields

Modifier and Type	Field and Description
private WordMap	pluralMap Set of words to de-pluralize

Fields inherited from class TokenFilter

input

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
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