org.apache.lucene.analysis.snowball
public class SnowballFilter extends TokenFilter
org.tartarus.snowball.ext
.AttributeSource.AttributeFactory, AttributeSource.State
input
Constructor and Description |
---|
SnowballFilter(TokenStream input,
SnowballProgram stemmer) |
SnowballFilter(TokenStream in,
java.lang.String name)
Construct the named stemming filter.
|
Modifier and Type | Method and Description |
---|---|
boolean |
incrementToken()
Returns the next input Token, after being stemmed
|
Token |
next()
Deprecated.
Will be removed in Lucene 3.0. This method is final, as it should
not be overridden. Delegates to the backwards compatibility layer.
|
Token |
next(Token reusableToken)
Deprecated.
Will be removed in Lucene 3.0. This method is final, as it should
not be overridden. Delegates to the backwards compatibility layer.
|
close, end, reset
getOnlyUseNewAPI, setOnlyUseNewAPI
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, restoreState, toString
public SnowballFilter(TokenStream input, SnowballProgram stemmer)
public SnowballFilter(TokenStream in, java.lang.String name)
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".in
- the input tokens to stemname
- the name of a stemmerpublic final boolean incrementToken() throws java.io.IOException
incrementToken
in class TokenStream
Note that this method will be defined abstract in Lucene 3.0.
java.io.IOException
public final Token next(Token reusableToken) throws java.io.IOException
TokenStream
This implicitly defines a "contract" between consumers (callers of this method) and producers (implementations of this method that are the source for tokens):
Token
before calling this method again.Token.clear()
before setting the fields in
it and returning itToken
after it
has been returned: the caller may arbitrarily change it. If the producer
needs to hold onto the Token
for subsequent calls, it must clone()
it before storing it. Note that a TokenFilter
is considered a
consumer.next
in class TokenStream
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.)Token
in the stream or null if end-of-stream was hitjava.io.IOException
public final Token next() throws java.io.IOException
TokenStream
Token
in the stream, or null at EOS.next
in class TokenStream
java.io.IOException
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