org.apache.lucene.analysis.snowball
Class SnowballFilter
java.lang.Object
org.apache.lucene.util.AttributeSource
org.apache.lucene.analysis.TokenStream
org.apache.lucene.analysis.TokenFilter
org.apache.lucene.analysis.snowball.SnowballFilter
- All Implemented Interfaces:
- Closeable
public final class SnowballFilter
- extends TokenFilter
A filter that stems words using a Snowball-generated stemmer.
Available stemmers are listed in org.tartarus.snowball.ext.
NOTE: SnowballFilter expects lowercased text.
|
Method Summary |
boolean |
incrementToken()
Returns the next input Token, after being stemmed |
| Methods inherited from class org.apache.lucene.util.AttributeSource |
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString |
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
incrementToken
public final boolean incrementToken()
throws IOException
- Returns the next input Token, after being stemmed
- Specified by:
incrementToken in class TokenStream
- Returns:
- false for end of stream; true otherwise
- Throws:
IOException