org.apache.lucene.analysis.de
Class GermanStemFilter

java.lang.Object
  extended by org.apache.lucene.analysis.TokenStream
      extended by org.apache.lucene.analysis.TokenFilter
          extended by org.apache.lucene.analysis.de.GermanStemFilter

public final class GermanStemFilter
extends TokenFilter

A filter that stems German words. It supports a table of words that should not be stemmed at all. The stemmer used can be changed at runtime after the filter object is created (as long as it is a GermanStemmer).

Version:
$Id: GermanStemFilter.java 687357 2008-08-20 14:38:07Z mikemccand $

Field Summary
 
Fields inherited from class org.apache.lucene.analysis.TokenFilter
input
 
Constructor Summary
GermanStemFilter(TokenStream in)
           
GermanStemFilter(TokenStream in, Set exclusionSet)
          Builds a GermanStemFilter that uses an exclusion table.
 
Method Summary
 Token next(Token reusableToken)
           
 void setExclusionSet(Set exclusionSet)
          Set an alternative exclusion list for this filter.
 void setStemmer(GermanStemmer stemmer)
          Set a alternative/custom GermanStemmer for this filter.
 
Methods inherited from class org.apache.lucene.analysis.TokenFilter
close, reset
 
Methods inherited from class org.apache.lucene.analysis.TokenStream
next
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

GermanStemFilter

public GermanStemFilter(TokenStream in)

GermanStemFilter

public GermanStemFilter(TokenStream in,
                        Set exclusionSet)
Builds a GermanStemFilter that uses an exclusion table.

Method Detail

next

public final Token next(Token reusableToken)
                 throws IOException
Overrides:
next in class TokenStream
Returns:
Returns the next token in the stream, or null at EOS
Throws:
IOException

setStemmer

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


setExclusionSet

public void setExclusionSet(Set exclusionSet)
Set an alternative exclusion list for this filter.



Copyright © 2000-2012 Apache Software Foundation. All Rights Reserved.