Package 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
  Description
  `MappingCharFilter(NormalizeCharMap normMap, 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)`
  `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, nullReader, read, read, ready, skip, transferTo`

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

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

- ## Constructor Details

  - ### MappingCharFilter

    public MappingCharFilter(NormalizeCharMap normMap, Reader in)
    Default constructor that takes a `Reader`.

- ## Method Details

  - ### 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`