org.apache.lucene.analysis.icu.segmentation

Class ICUTokenizer

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.Tokenizer

org.apache.lucene.analysis.icu.segmentation.ICUTokenizer

All Implemented Interfaces:

Closeable

public final class ICUTokenizer
extends Tokenizer

Breaks text into words according to UAX #29: Unicode Text Segmentation (http://www.unicode.org/reports/tr29/)

Words are broken across script boundaries, then segmented according to the BreakIterator and typing provided by the ICUTokenizerConfig

See Also:

ICUTokenizerConfig

WARNING: This API is experimental and might change in incompatible ways in the next release.

Nested Class Summary

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

AttributeSource.AttributeFactory, AttributeSource.State

Field Summary

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

input

Constructor Summary

Constructors

Constructor and Description
ICUTokenizer(AttributeSource.AttributeFactory factory, Reader input, ICUTokenizerConfig config) Construct a new ICUTokenizer that breaks text into words from the given Reader, using a tailored BreakIterator configuration.
ICUTokenizer(Reader input) Construct a new ICUTokenizer that breaks text into words from the given Reader.
ICUTokenizer(Reader input, ICUTokenizerConfig config) Construct a new ICUTokenizer that breaks text into words from the given Reader, using a tailored BreakIterator configuration.

Method Summary

Methods

Modifier and Type	Method and Description
void	end()
boolean	incrementToken()
void	reset()

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

close, correctOffset, setReader

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ICUTokenizer

public ICUTokenizer(Reader input)

Construct a new ICUTokenizer that breaks text into words from the given Reader.

The default script-specific handling is used.

The default attribute factory is used.

Parameters:

input - Reader containing text to tokenize.

See Also:

DefaultICUTokenizerConfig

ICUTokenizer

public ICUTokenizer(Reader input,
            ICUTokenizerConfig config)

Construct a new ICUTokenizer that breaks text into words from the given Reader, using a tailored BreakIterator configuration.

The default attribute factory is used.

Parameters:

input - Reader containing text to tokenize.

config - Tailored BreakIterator configuration

ICUTokenizer

public ICUTokenizer(AttributeSource.AttributeFactory factory,
            Reader input,
            ICUTokenizerConfig config)

Construct a new ICUTokenizer that breaks text into words from the given Reader, using a tailored BreakIterator configuration.

Parameters:

factory - AttributeFactory to use

input - Reader containing text to tokenize.

config - Tailored BreakIterator configuration

Method Detail

incrementToken

public boolean incrementToken()
                       throws IOException

Specified by:

incrementToken in class TokenStream

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class Tokenizer

Throws:

IOException

end

public void end()
         throws IOException

Overrides:

end in class TokenStream

Throws:

IOException