Package org.apache.lucene.analysis.cjk
Class CJKTokenizer
- java.lang.Object
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- org.apache.lucene.util.AttributeSource
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- org.apache.lucene.analysis.TokenStream
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- org.apache.lucene.analysis.Tokenizer
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- org.apache.lucene.analysis.cjk.CJKTokenizer
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- All Implemented Interfaces:
Closeable
,AutoCloseable
@Deprecated public final class CJKTokenizer extends org.apache.lucene.analysis.Tokenizer
Deprecated.Use StandardTokenizer, CJKWidthFilter, CJKBigramFilter, and LowerCaseFilter instead.CJKTokenizer is designed for Chinese, Japanese, and Korean languages.The tokens returned are every two adjacent characters with overlap match.
Example: "java C1C2C3C4" will be segmented to: "java" "C1C2" "C2C3" "C3C4".
Additionally, the following is applied to Latin text (such as English):- Text is converted to lowercase.
- Numeric digits, '+', '#', and '_' are tokenized as letters.
- Full-width forms are converted to half-width forms.
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Constructor Summary
Constructors Constructor Description CJKTokenizer(Reader in)
Deprecated.Construct a token stream processing the given input.CJKTokenizer(org.apache.lucene.util.AttributeSource.AttributeFactory factory, Reader in)
Deprecated.CJKTokenizer(org.apache.lucene.util.AttributeSource source, Reader in)
Deprecated.
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description void
end()
Deprecated.boolean
incrementToken()
Deprecated.Returns true for the next token in the stream, or false at EOS.void
reset()
Deprecated.void
reset(Reader reader)
Deprecated.-
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
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Constructor Detail
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CJKTokenizer
public CJKTokenizer(Reader in)
Deprecated.Construct a token stream processing the given input.- Parameters:
in
- I/O reader
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CJKTokenizer
public CJKTokenizer(org.apache.lucene.util.AttributeSource source, Reader in)
Deprecated.
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CJKTokenizer
public CJKTokenizer(org.apache.lucene.util.AttributeSource.AttributeFactory factory, Reader in)
Deprecated.
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Method Detail
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incrementToken
public boolean incrementToken() throws IOException
Deprecated.Returns true for the next token in the stream, or false at EOS. See http://java.sun.com/j2se/1.3/docs/api/java/lang/Character.UnicodeBlock.html for detail.- Specified by:
incrementToken
in classorg.apache.lucene.analysis.TokenStream
- Returns:
- false for end of stream, true otherwise
- Throws:
IOException
- - throw IOException when read error
happened in the InputStream
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end
public final void end()
Deprecated.- Overrides:
end
in classorg.apache.lucene.analysis.TokenStream
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reset
public void reset() throws IOException
Deprecated.- Overrides:
reset
in classorg.apache.lucene.analysis.TokenStream
- Throws:
IOException
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reset
public void reset(Reader reader) throws IOException
Deprecated.- Overrides:
reset
in classorg.apache.lucene.analysis.Tokenizer
- Throws:
IOException
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