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:

java.io.Closeable, java.lang.AutoCloseable

Deprecated.

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

@Deprecated
public final class ChineseTokenizer
extends org.apache.lucene.analysis.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.

Version:

1.0

Nested Class Summary

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

org.apache.lucene.util.AttributeSource.AttributeFactory, org.apache.lucene.util.AttributeSource.State

Field Summary

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

input

Constructor Summary

Constructors

Constructor and Description
ChineseTokenizer(org.apache.lucene.util.AttributeSource.AttributeFactory factory, java.io.Reader in) Deprecated.
ChineseTokenizer(org.apache.lucene.util.AttributeSource source, java.io.Reader in) Deprecated.
ChineseTokenizer(java.io.Reader in) Deprecated.

Method Summary

Modifier and Type	Method and Description
void	end() Deprecated.
boolean	incrementToken() Deprecated.
void	reset() Deprecated.
void	reset(java.io.Reader input) Deprecated.

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

close, correctOffset

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(java.io.Reader in)

Deprecated.

ChineseTokenizer

public ChineseTokenizer(org.apache.lucene.util.AttributeSource source,
                        java.io.Reader in)

Deprecated.

ChineseTokenizer

public ChineseTokenizer(org.apache.lucene.util.AttributeSource.AttributeFactory factory,
                        java.io.Reader in)

Deprecated.

Method Detail

incrementToken

public boolean incrementToken()
                       throws java.io.IOException

Deprecated.

Specified by:

incrementToken in class org.apache.lucene.analysis.TokenStream

Throws:

java.io.IOException

end

public final void end()

Deprecated.

Overrides:

end in class org.apache.lucene.analysis.TokenStream

reset

public void reset()
           throws java.io.IOException

Deprecated.

Overrides:

reset in class org.apache.lucene.analysis.TokenStream

Throws:

java.io.IOException

reset

public void reset(java.io.Reader input)
           throws java.io.IOException

Deprecated.

Overrides:

reset in class org.apache.lucene.analysis.Tokenizer

Throws:

java.io.IOException