Package org.apache.lucene.analysis.cjk

Class CJKWidthCharFilter

java.lang.Object

java.io.Reader

org.apache.lucene.analysis.CharFilter

org.apache.lucene.analysis.charfilter.BaseCharFilter

org.apache.lucene.analysis.cjk.CJKWidthCharFilter

All Implemented Interfaces:

Closeable, AutoCloseable, Readable

public class CJKWidthCharFilter
extends BaseCharFilter

A CharFilter that normalizes CJK width differences:

• Folds fullwidth ASCII variants into the equivalent basic latin
• Folds halfwidth Katakana variants into the equivalent kana

NOTE: this char filter is the exact counterpart of CJKWidthFilter.

Field Summary

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

input

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor	Description
CJKWidthCharFilter(Reader in)	Default constructor that takes a Reader.

Method Summary

Modifier and Type	Method	Description
int	read()
int	read(char[] cbuf, int off, int len)

Methods inherited from class org.apache.lucene.analysis.charfilter.BaseCharFilter

addOffCorrectMap, correct, getLastCumulativeDiff

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

close, correctOffset

Methods inherited from class java.io.Reader

mark, markSupported, nullReader, read, read, ready, reset, skip, transferTo

Methods inherited from class java.lang.Object

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

Constructor Details

CJKWidthCharFilter

public CJKWidthCharFilter(Reader in)

Default constructor that takes a Reader.

Method Details

read

public int read()
         throws IOException

Overrides:

read in class Reader

Throws:

IOException

read

public int read(char[] cbuf,
 int off,
 int len)
         throws IOException

Specified by:

read in class Reader

Throws:

IOException