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Class Summary |
| Analyzer |
An Analyzer builds TokenStreams, which analyze text. |
| LetterTokenizer |
A LetterTokenizer is a tokenizer that divides text at non-letters. |
| LowerCaseFilter |
Normalizes token text to lower case. |
| LowerCaseTokenizer |
LowerCaseTokenizer performs the function of LetterTokenizer
and LowerCaseFilter together. |
| PorterStemFilter |
Transforms the token stream as per the Porter stemming algorithm. |
| PorterStemmer |
Stemmer, implementing the Porter Stemming Algorithm
The Stemmer class transforms a word into its root form. |
| SimpleAnalyzer |
An Analyzer that filters LetterTokenizer with LowerCaseFilter. |
| StopAnalyzer |
Filters LetterTokenizer with LowerCaseFilter and StopFilter. |
| StopFilter |
Removes stop words from a token stream. |
| Token |
A Token is an occurence of a term from the text of a field. |
| TokenFilter |
A TokenFilter is a TokenStream whose input is another token stream. |
| Tokenizer |
A Tokenizer is a TokenStream whose input is a Reader. |
| TokenStream |
A TokenStream enumerates the sequence of tokens, either from
fields of a document or from query text. |