org.getopt.stempel.lucene
Class StempelFilter

java.lang.Object
  org.apache.lucene.analysis.TokenStream
      org.apache.lucene.analysis.TokenFilter
          org.getopt.stempel.lucene.StempelFilter

public class StempelFilter

extends org.apache.lucene.analysis.TokenFilter

Transforms the token stream as per the stemming algorithm. Note: the input to the stemming filter must already be in lower case, so you will need to use LowerCaseFilter or LowerCaseTokenizer farther down the Tokenizer chain in order for this to work properly!

Author:

Andrzej Bialecki <ab@getopt.org>

Field Summary

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

input

Constructor Summary

StempelFilter(Stemmer stemmer, org.apache.lucene.analysis.TokenStream in)
Create filter using the supplied stemming table.

StempelFilter(org.apache.lucene.analysis.TokenStream in)
Create filter using the default stemming table.

Method Summary

org.apache.lucene.analysis.Token

next() Returns the next input Token, after being stemmed

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

close

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StempelFilter

public StempelFilter(org.apache.lucene.analysis.TokenStream in)

Create filter using the default stemming table.

Parameters:

in - input token stream

StempelFilter

public StempelFilter(Stemmer stemmer,
                     org.apache.lucene.analysis.TokenStream in)

Create filter using the supplied stemming table.

Parameters:

stemmer - stemmer

in - input token stream

Method Detail

next

public final org.apache.lucene.analysis.Token next()
                                            throws java.io.IOException

Returns the next input Token, after being stemmed

Throws:

java.io.IOException