org.apache.lucene.analysis.stempel
Class StempelStemmer

java.lang.Object
  extended by org.apache.lucene.analysis.stempel.StempelStemmer

public class StempelStemmer
extends Object

Stemmer class is a convenient facade for other stemmer-related classes. The core stemming algorithm and its implementation is taken verbatim from the Egothor project ( www.egothor.org ).

Even though the stemmer tables supplied in the distribution package are built for Polish language, there is nothing language-specific here.


Constructor Summary
StempelStemmer(InputStream stemmerTable)
          Create a Stemmer using selected stemmer table
StempelStemmer(Trie stemmer)
          Create a Stemmer using pre-loaded stemmer table
 
Method Summary
static Trie load(InputStream stemmerTable)
          Load a stemmer table from an inputstream.
 StringBuilder stem(CharSequence word)
          Stem a word.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

StempelStemmer

public StempelStemmer(InputStream stemmerTable)
               throws IOException
Create a Stemmer using selected stemmer table

Parameters:
stemmerTable - stemmer table.
Throws:
IOException

StempelStemmer

public StempelStemmer(Trie stemmer)
Create a Stemmer using pre-loaded stemmer table

Parameters:
stemmer - pre-loaded stemmer table
Method Detail

load

public static Trie load(InputStream stemmerTable)
                 throws IOException
Load a stemmer table from an inputstream.

Throws:
IOException

stem

public StringBuilder stem(CharSequence word)
Stem a word.

Parameters:
word - input word to be stemmed.
Returns:
stemmed word, or null if the stem could not be generated.


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