org.apache.lucene.analysis.fr
Class FrenchAnalyzer

java.lang.Object
  extended byorg.apache.lucene.analysis.Analyzer
      extended byorg.apache.lucene.analysis.fr.FrenchAnalyzer

public final class FrenchAnalyzer
extends Analyzer

Analyzer for French language. Supports an external list of stopwords (words that will not be indexed at all) and an external list of exclusions (word that will not be stemmed, but indexed). A default set of stopwords is used unless an alternative list is specified, the exclusion list is empty by default.

Version:
$Id: FrenchAnalyzer.java 178832 2005-05-27 23:00:49Z dnaber $
Author:
Patrick Talbot (based on Gerhard Schwarz's work for German)

Field Summary
static String[] FRENCH_STOP_WORDS
          Extended list of typical French stopwords.
 
Constructor Summary
FrenchAnalyzer()
          Builds an analyzer with the default stop words (FRENCH_STOP_WORDS).
FrenchAnalyzer(File stopwords)
          Builds an analyzer with the given stop words.
FrenchAnalyzer(Hashtable stopwords)
          Deprecated.  
FrenchAnalyzer(String[] stopwords)
          Builds an analyzer with the given stop words.
 
Method Summary
 void setStemExclusionTable(File exclusionlist)
          Builds an exclusionlist from the words contained in the given file.
 void setStemExclusionTable(Hashtable exclusionlist)
          Builds an exclusionlist from a Hashtable.
 void setStemExclusionTable(String[] exclusionlist)
          Builds an exclusionlist from an array of Strings.
 TokenStream tokenStream(String fieldName, Reader reader)
          Creates a TokenStream which tokenizes all the text in the provided Reader.
 
Methods inherited from class org.apache.lucene.analysis.Analyzer
getPositionIncrementGap, tokenStream
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

FRENCH_STOP_WORDS

public static final String[] FRENCH_STOP_WORDS
Extended list of typical French stopwords.

Constructor Detail

FrenchAnalyzer

public FrenchAnalyzer()
Builds an analyzer with the default stop words (FRENCH_STOP_WORDS).


FrenchAnalyzer

public FrenchAnalyzer(String[] stopwords)
Builds an analyzer with the given stop words.


FrenchAnalyzer

public FrenchAnalyzer(Hashtable stopwords)
Deprecated.  

Builds an analyzer with the given stop words.


FrenchAnalyzer

public FrenchAnalyzer(File stopwords)
               throws IOException
Builds an analyzer with the given stop words.

Throws:
IOException
Method Detail

setStemExclusionTable

public void setStemExclusionTable(String[] exclusionlist)
Builds an exclusionlist from an array of Strings.


setStemExclusionTable

public void setStemExclusionTable(Hashtable exclusionlist)
Builds an exclusionlist from a Hashtable.


setStemExclusionTable

public void setStemExclusionTable(File exclusionlist)
                           throws IOException
Builds an exclusionlist from the words contained in the given file.

Throws:
IOException

tokenStream

public final TokenStream tokenStream(String fieldName,
                                     Reader reader)
Creates a TokenStream which tokenizes all the text in the provided Reader.

Overrides:
tokenStream in class Analyzer
Returns:
A TokenStream build from a StandardTokenizer filtered with StandardFilter, StopFilter, FrenchStemFilter and LowerCaseFilter


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