org.apache.lucene.analysis.snowball: public class: SnowballAnalyzer

org.apache.lucene.analysis.snowball
public class: SnowballAnalyzer [javadoc | source]

java.lang.Object
   org.apache.lucene.analysis.Analyzer
      org.apache.lucene.analysis.snowball.SnowballAnalyzer

Filters StandardTokenizer with StandardFilter , LowerCaseFilter , StopFilter and SnowballFilter . Available stemmers are listed in net.sf.snowball.ext . The name of a stemmer is the part of the class name before "Stemmer", e.g., the stemmer in org.tartarus.snowball.ext.EnglishStemmer is named "English".

Constructor:
public SnowballAnalyzer(String name) { this.name = name; } Builds the named analyzer with no stop words.
public SnowballAnalyzer(String name, String[] stopWords) { this(name); stopSet = StopFilter.makeStopSet(stopWords); } Builds the named analyzer with the given stop words.

Constructor:

 public SnowballAnalyzer(String name) {
    this.name = name;
}

Builds the named analyzer with no stop words.

 public SnowballAnalyzer(String name,
    String[] stopWords) {
    this(name);
    stopSet = StopFilter.makeStopSet(stopWords);
}

Builds the named analyzer with the given stop words.

Method from org.apache.lucene.analysis.snowball.SnowballAnalyzer Summary:
tokenStream

Methods from org.apache.lucene.analysis.Analyzer:
close, getPositionIncrementGap, getPreviousTokenStream, reusableTokenStream, setPreviousTokenStream, tokenStream

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.lucene.analysis.snowball.SnowballAnalyzer Detail:
public TokenStream tokenStream(String fieldName, Reader reader) { 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; } Constructs a StandardTokenizer filtered by a StandardFilter , a LowerCaseFilter and a StopFilter .

Method from org.apache.lucene.analysis.snowball.SnowballAnalyzer Detail:

 public TokenStream tokenStream(String fieldName,
    Reader reader) {
    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;
}