org.apache.lucene.analysis.de

Class 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 150998 2004-08-16 20:30:46Z dnaber $
Author:
Gerhard Schwarz

Field Summary

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

input

Constructor Summary

GermanStemFilter(TokenStream in)
GermanStemFilter(TokenStream in, Hashtable exclusiontable)
Deprecated. Use GermanStemFilter(org.apache.lucene.analysis.TokenStream, java.util.Set) instead.
GermanStemFilter(TokenStream in, Set exclusionSet)
Builds a GermanStemFilter that uses an exclusiontable.

Method Summary

Token
next()
void
setExclusionSet(Set exclusionSet)
Set an alternative exclusion list for this filter.
void
setExclusionTable(Hashtable exclusiontable)
Deprecated. Use setExclusionSet(java.util.Set) instead.
void
setStemmer(GermanStemmer stemmer)
Set a alternative/custom GermanStemmer for this filter.

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

close

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

close, next

Constructor Details

GermanStemFilter

public GermanStemFilter(TokenStream in)

GermanStemFilter

public GermanStemFilter(TokenStream in,
                        Hashtable exclusiontable)

Deprecated. Use GermanStemFilter(org.apache.lucene.analysis.TokenStream, java.util.Set) instead.

Builds a GermanStemFilter that uses an exclusiontable.

GermanStemFilter

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

Method Details

next

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

setExclusionSet

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

setExclusionTable

public void setExclusionTable(Hashtable exclusiontable)

Deprecated. Use setExclusionSet(java.util.Set) instead.

Set an alternative exclusion list for this filter.

setStemmer

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

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