org.apache.lucene.analysis.snowball
Class SnowballFilter
java.lang.Object
org.apache.lucene.analysis.TokenStream
org.apache.lucene.analysis.TokenFilter
org.apache.lucene.analysis.snowball.SnowballFilter
public class SnowballFilter
- extends TokenFilter
A filter that stems words using a Snowball-generated stemmer.
Available stemmers are listed in org.tartarus.snowball.ext
.
Method Summary |
Token |
next(Token reusableToken)
Returns the next input Token, after being stemmed |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
SnowballFilter
public SnowballFilter(TokenStream input,
SnowballProgram stemmer)
SnowballFilter
public SnowballFilter(TokenStream in,
String name)
- Construct the named stemming filter.
Available stemmers are listed in
org.tartarus.snowball.ext
.
The name of a stemmer is the part of the class name before "Stemmer",
e.g., the stemmer in EnglishStemmer
is named "English".
- Parameters:
in
- the input tokens to stemname
- the name of a stemmer
next
public final Token next(Token reusableToken)
throws IOException
- Returns the next input Token, after being stemmed
- Overrides:
next
in class TokenStream
- Parameters:
reusableToken
- a Token that may or may not be used to
return; this parameter should never be null (the callee
is not required to check for null before using it, but it is a
good idea to assert that it is not null.)
- Returns:
- next token in the stream or null if end-of-stream was hit
- Throws:
IOException
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