@Deprecated public final class Lucene43NGramTokenizer extends Tokenizer
NGramTokenizer
.AttributeSource.AttributeFactory, AttributeSource.State
Modifier and Type | Field and Description |
---|---|
static int |
DEFAULT_MAX_NGRAM_SIZE
Deprecated.
|
static int |
DEFAULT_MIN_NGRAM_SIZE
Deprecated.
|
Constructor and Description |
---|
Lucene43NGramTokenizer(AttributeSource.AttributeFactory factory,
Reader input,
int minGram,
int maxGram)
Deprecated.
Creates NGramTokenizer with given min and max n-grams.
|
Lucene43NGramTokenizer(Reader input)
Deprecated.
Creates NGramTokenizer with default min and max n-grams.
|
Lucene43NGramTokenizer(Reader input,
int minGram,
int maxGram)
Deprecated.
Creates NGramTokenizer with given min and max n-grams.
|
Modifier and Type | Method and Description |
---|---|
void |
end()
Deprecated.
This method is called by the consumer after the last token has been
consumed, after
TokenStream.incrementToken() returned false
(using the new TokenStream API). |
boolean |
incrementToken()
Deprecated.
Returns the next token in the stream, or null at EOS.
|
void |
reset()
Deprecated.
This method is called by a consumer before it begins consumption using
TokenStream.incrementToken() . |
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString
public static final int DEFAULT_MIN_NGRAM_SIZE
public static final int DEFAULT_MAX_NGRAM_SIZE
public Lucene43NGramTokenizer(Reader input, int minGram, int maxGram)
input
- Reader
holding the input to be tokenizedminGram
- the smallest n-gram to generatemaxGram
- the largest n-gram to generatepublic Lucene43NGramTokenizer(AttributeSource.AttributeFactory factory, Reader input, int minGram, int maxGram)
factory
- AttributeSource.AttributeFactory
to useinput
- Reader
holding the input to be tokenizedminGram
- the smallest n-gram to generatemaxGram
- the largest n-gram to generatepublic boolean incrementToken() throws IOException
incrementToken
in class TokenStream
IOException
public void end() throws IOException
TokenStream
TokenStream.incrementToken()
returned false
(using the new TokenStream
API). Streams implementing the old API
should upgrade to use this feature.
This method can be used to perform any end-of-stream operations, such as
setting the final offset of a stream. The final offset of a stream might
differ from the offset of the last token eg in case one or more whitespaces
followed after the last token, but a WhitespaceTokenizer was used.
Additionally any skipped positions (such as those removed by a stopfilter) can be applied to the position increment, or any adjustment of other attributes where the end-of-stream value may be important.
If you override this method, always call super.end()
.
end
in class TokenStream
IOException
- If an I/O error occurspublic void reset() throws IOException
TokenStream
TokenStream.incrementToken()
.
Resets this stream to a clean state. Stateful implementations must implement this method so that they can be reused, just as if they had been created fresh.
If you override this method, always call super.reset()
, otherwise
some internal state will not be correctly reset (e.g., Tokenizer
will
throw IllegalStateException
on further usage).
reset
in class Tokenizer
IOException
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