Package org.apache.lucene.analysis.opennlp

Class OpenNLPTokenizer

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.Tokenizer

org.apache.lucene.analysis.util.SegmentingTokenizerBase

org.apache.lucene.analysis.opennlp.OpenNLPTokenizer

All Implemented Interfaces:

Closeable, AutoCloseable

public final class OpenNLPTokenizer
extends SegmentingTokenizerBase

Run OpenNLP SentenceDetector and Tokenizer. The last token in each sentence is marked by setting the EOS_FLAG_BIT in the FlagsAttribute; following filters can use this information to apply operations to tokens one sentence at a time.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource

AttributeSource.State

Field Summary

Fields

Modifier and Type	Field	Description
static int	EOS_FLAG_BIT

Fields inherited from class org.apache.lucene.analysis.util.SegmentingTokenizerBase

buffer, BUFFERMAX, offset

Fields inherited from class org.apache.lucene.analysis.Tokenizer

input

Fields inherited from class org.apache.lucene.analysis.TokenStream

DEFAULT_TOKEN_ATTRIBUTE_FACTORY

Constructor Summary

Constructors

Constructor	Description
OpenNLPTokenizer(AttributeFactory factory, NLPSentenceDetectorOp sentenceOp, NLPTokenizerOp tokenizerOp)

Method Summary

Modifier and Type	Method	Description
void	close()
protected boolean	incrementWord()
void	reset()
protected void	setNextSentence(int sentenceStart, int sentenceEnd)

Methods inherited from class org.apache.lucene.analysis.util.SegmentingTokenizerBase

end, incrementToken, isSafeEnd

Methods inherited from class org.apache.lucene.analysis.Tokenizer

correctOffset, setReader

Methods inherited from class org.apache.lucene.util.AttributeSource

addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, endAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, removeAllAttributes, restoreState, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

EOS_FLAG_BIT

public static int EOS_FLAG_BIT

Constructor Detail

OpenNLPTokenizer

public OpenNLPTokenizer(AttributeFactory factory,
                        NLPSentenceDetectorOp sentenceOp,
                        NLPTokenizerOp tokenizerOp)
                 throws IOException

Throws:

IOException

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class Tokenizer

Throws:

IOException

setNextSentence

protected void setNextSentence(int sentenceStart,
                               int sentenceEnd)

Specified by:

setNextSentence in class SegmentingTokenizerBase

incrementWord

protected boolean incrementWord()

Specified by:

incrementWord in class SegmentingTokenizerBase

reset

public void reset()
           throws IOException

Overrides:

reset in class SegmentingTokenizerBase

Throws:

IOException