org.apache.lucene.analysis.ru
Class RussianStemFilter

java.lang.Object
  org.apache.lucene.util.AttributeSource
      org.apache.lucene.analysis.TokenStream
          org.apache.lucene.analysis.TokenFilter
              org.apache.lucene.analysis.ru.RussianStemFilter

All Implemented Interfaces:

Closeable

public final class RussianStemFilter
extends TokenFilter

A TokenFilter that stems Russian words.

The implementation was inspired by GermanStemFilter. The input should be filtered by LowerCaseFilter before passing it to RussianStemFilter , because RussianStemFilter only works with lowercase characters.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource

AttributeSource.AttributeFactory, AttributeSource.State

Field Summary

Fields inherited from class org.apache.lucene.analysis.TokenFilter

input

Constructor Summary

RussianStemFilter(TokenStream in)

Method Summary

boolean	incrementToken() Returns the next token in the stream, or null at EOS
void	setStemmer(org.apache.lucene.analysis.ru.RussianStemmer stemmer) Set a alternative/custom RussianStemmer for this filter.

Methods inherited from class org.apache.lucene.analysis.TokenFilter

close, end, reset

Methods inherited from class org.apache.lucene.util.AttributeSource

addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, restoreState, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RussianStemFilter

public RussianStemFilter(TokenStream in)

Method Detail

incrementToken

public final boolean incrementToken()
                             throws IOException

Returns the next token in the stream, or null at EOS

Specified by:

incrementToken in class TokenStream

Returns:

false for end of stream; true otherwise

Throws:

IOException

setStemmer

public void setStemmer(org.apache.lucene.analysis.ru.RussianStemmer stemmer)

Set a alternative/custom RussianStemmer for this filter.