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SnowballAnalyzer.javaAPI DocApache Lucene 1.92086Mon Feb 20 09:17:50 GMT 2006org.apache.lucene.analysis.snowball

SnowballAnalyzer

public class SnowballAnalyzer extends Analyzer
Filters {@link StandardTokenizer} with {@link StandardFilter}, {@link LowerCaseFilter}, {@link StopFilter} and {@link SnowballFilter}. Available stemmers are listed in {@link net.sf.snowball.ext}. The name of a stemmer is the part of the class name before "Stemmer", e.g., the stemmer in {@link EnglishStemmer} is named "English".

Fields Summary
private String
name
private Set
stopSet
Constructors Summary
public SnowballAnalyzer(String name)
Builds the named analyzer with no stop words.

    this.name = name;
public SnowballAnalyzer(String name, String[] stopWords)
Builds the named analyzer with the given stop words.

    this(name);
    stopSet = StopFilter.makeStopSet(stopWords);
Methods Summary
public org.apache.lucene.analysis.TokenStreamtokenStream(java.lang.String fieldName, java.io.Reader reader)
Constructs a {@link StandardTokenizer} filtered by a {@link StandardFilter}, a {@link LowerCaseFilter} and a {@link StopFilter}.

    TokenStream result = new StandardTokenizer(reader);
    result = new StandardFilter(result);
    result = new LowerCaseFilter(result);
    if (stopSet != null)
      result = new StopFilter(result, stopSet);
    result = new SnowballFilter(result, name);
    return result;