Package org.apache.lucene.analysis.ru

Class RussianStemFilter

  • All Implemented Interfaces:
    Closeable, AutoCloseable
    @Deprecated
public final class RussianStemFilter
extends org.apache.lucene.analysis.TokenFilter
    Deprecated.
    Use SnowballFilter with RussianStemmer instead, which has the same functionality. This filter will be removed in Lucene 4.0
    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.

    To prevent terms from being stemmed use an instance of KeywordMarkerFilter or a custom TokenFilter that sets the KeywordAttribute before this TokenStream.

    See Also:
    KeywordMarkerFilter

    • Nested Class Summary

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

        org.apache.lucene.util.AttributeSource.AttributeFactory, org.apache.lucene.util.AttributeSource.State

    • Field Summary

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

        input

    • Constructor Summary

      Constructors 
      Constructor Description
      RussianStemFilter​(org.apache.lucene.analysis.TokenStream in)
      Deprecated.
       

    • Method Summary

      All Methods Instance Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      boolean incrementToken()
      Deprecated.
      Returns the next token in the stream, or null at EOS
      void setStemmer​(org.apache.lucene.analysis.ru.RussianStemmer stemmer)
      Deprecated.
      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, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString

    • Constructor Detail

      • RussianStemFilter

        public RussianStemFilter​(org.apache.lucene.analysis.TokenStream in)
        Deprecated.

    • Method Detail

      • incrementToken

        public final boolean incrementToken()
                             throws IOException
        Deprecated.
        Returns the next token in the stream, or null at EOS
        Specified by:
        incrementToken in class org.apache.lucene.analysis.TokenStream
        Throws:
        IOException

      • setStemmer

        public void setStemmer​(org.apache.lucene.analysis.ru.RussianStemmer stemmer)
        Deprecated.
        Set a alternative/custom RussianStemmer for this filter.