org.apache.lucene.analysis.charfilter

## Class MappingCharFilter

- java.lang.Object
- - java.io.Reader
  - - org.apache.lucene.analysis.CharFilter
    - - org.apache.lucene.analysis.charfilter.BaseCharFilter
      - - org.apache.lucene.analysis.charfilter.MappingCharFilter

All Implemented Interfaces:
  Closeable, AutoCloseable, Readable

    public class MappingCharFilter
    extends BaseCharFilter

Simplistic `CharFilter` that applies the mappings contained in a `NormalizeCharMap` to the character stream, and correcting the resulting changes to the offsets. Matching is greedy (longest pattern matching at a given point wins). Replacement is allowed to be the empty string.

### Field Summary

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

`input`

### Fields inherited from class java.io.Reader

`lock`

### Constructor Summary

Constructors
Constructor and Description
`MappingCharFilter(NormalizeCharMap normMap, Reader in)` Default constructor that takes a `Reader`.

### Method Summary

Methods
`int` `read()`
`int` `read(char[] cbuf, int off, int len)`
`void` `reset()`

### 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, read, read, ready, skip`

### Methods inherited from class java.lang.Object

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

### Constructor Detail

#### MappingCharFilter

    public MappingCharFilter(NormalizeCharMap normMap,
                     Reader in)

Default constructor that takes a `Reader`.

### Method Detail

#### reset

    public void reset()
               throws IOException

Overrides:
  `reset` in class `Reader`
Throws:
  `IOException`

#### 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`