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

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

ChineseTokenizer(AttributeSource source, Reader in)
Deprecated.

ChineseTokenizer(Reader in)
Deprecated.

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ChineseTokenizer

public ChineseTokenizer(Reader in)

Deprecated.

ChineseTokenizer

public ChineseTokenizer(AttributeSource source,
                        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()

Deprecated.

Overrides:

end in class TokenStream

reset

public void reset()
           throws IOException

Deprecated.

Overrides:

reset in class TokenStream

Throws:

IOException