Class RussianStemFilter

  extended by org.apache.lucene.util.AttributeSource
      extended by org.apache.lucene.analysis.TokenStream
          extended by org.apache.lucene.analysis.TokenFilter
              extended by

public final class RussianStemFilter
extends TokenFilter

A TokenFilter that stems Russian words.

The implementation was inspired by GermanStemFilter. The input should be filtered by RussianLowerCaseFilter before passing it to RussianStemFilter , because RussianStemFilter only works with lowercase part of any "russian" charset.

$Id: 808427 2009-08-27 14:28:22Z hossman $

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
Constructor Summary
RussianStemFilter(TokenStream in)
RussianStemFilter(TokenStream in, char[] charset)
          Deprecated. Use RussianStemFilter(TokenStream) instead.
Method Summary
 boolean incrementToken()
          Returns the next token in the stream, or null at EOS
 void setStemmer( 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.analysis.TokenStream
getOnlyUseNewAPI, next, next, setOnlyUseNewAPI
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


public RussianStemFilter(TokenStream in,
                         char[] charset)
Deprecated. Use RussianStemFilter(TokenStream) instead.


public RussianStemFilter(TokenStream in)
Method Detail


public final boolean incrementToken()
                             throws IOException
Returns the next token in the stream, or null at EOS

incrementToken in class TokenStream
false for end of stream; true otherwise

Note that this method will be defined abstract in Lucene 3.0.



public void setStemmer( stemmer)
Set a alternative/custom RussianStemmer for this filter.

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