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
All Implemented Interfaces:

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
Constructor Summary
RussianStemFilter(TokenStream in)
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.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)
Method Detail


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

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


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

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