org.apache.lucene.analysis.cn

Class ChineseTokenizer

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.Tokenizer

org.apache.lucene.analysis.cn.ChineseTokenizer

All Implemented Interfaces:

Closeable

Deprecated.

(3.1) Use StandardTokenizer instead, which has the same functionality. This filter will be removed in Lucene 5.0

@Deprecated
public final class ChineseTokenizer
extends Tokenizer

Tokenize Chinese text as individual chinese characters.

The difference between ChineseTokenizer and CJKTokenizer is that they have different token parsing logic.

For example, if the Chinese text "C1C2C3C4" is to be indexed:

• The tokens returned from ChineseTokenizer are C1, C2, C3, C4.
• The tokens returned from the CJKTokenizer are C1C2, C2C3, C3C4.

Therefore the index created by CJKTokenizer is much larger.

The problem is that when searching for C1, C1C2, C1C3, C4C2, C1C2C3 ... the ChineseTokenizer works, but the CJKTokenizer will not work.

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
ChineseTokenizer(AttributeSource.AttributeFactory factory, Reader in) Deprecated.
ChineseTokenizer(Reader in) Deprecated.

Method Summary

Methods

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

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

ChineseTokenizer

public ChineseTokenizer(Reader in)

Deprecated.

ChineseTokenizer

public ChineseTokenizer(AttributeSource.AttributeFactory factory,
                Reader in)

Deprecated.

Method Detail

incrementToken

public boolean incrementToken()
                       throws IOException

Deprecated.

Specified by:

incrementToken in class TokenStream

Throws:

IOException

end

public final void end()
               throws IOException

Deprecated.

Overrides:

end in class TokenStream

Throws:

IOException

reset

public void reset()
           throws IOException

Deprecated.

Overrides:

reset in class Tokenizer

Throws:

IOException