Converter (Logback-Parent 1.5.34 API)

java.lang.Object
- ch.qos.logback.core.pattern.Converter<E>

Type Parameters:

E - The type of the event object

Direct Known Subclasses:

FormattingConverter, LiteralConverter
```
public abstract class Converter<E>
extends Object
```
A minimal converter which sets up the general interface for derived classes. It also implements the functionality to chain converters in a linked list.

Author:

ceki

Constructor Summary

Constructors
Constructor Description

Converter()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract String`	`convert(E event)`	The convert method is responsible for extracting data from the event and returning a formatted string representation.
`Converter<E>`	`getNext()`	Gets the next converter in the chain.
`void`	`setNext(Converter<E> next)`	Sets the next converter in the chain.
`void`	`write(StringBuilder buf, E event)`	Formats the event by calling convert() and appends the resulting string to the provided buffer.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Converter
```
public Converter()
```
- Method Detail
  - convert
```
public abstract String convert(E event)
```
    The convert method is responsible for extracting data from the event and returning a formatted string representation.
    
    Parameters:
    
    event - the event to convert
    
    Returns:
    
    the formatted string representation
  - write
```
public void write(StringBuilder buf,
                  E event)
```
    Formats the event by calling convert() and appends the resulting string to the provided buffer.
    
    Parameters:
    
    buf - The input buffer where data is appended
    
    event - The event from where data is extracted
  - setNext
```
public final void setNext(Converter<E> next)
```
    Sets the next converter in the chain. This method can only be called once per converter instance.
    
    Parameters:
    
    next - the next converter to chain
    
    Throws:
    
    IllegalStateException - if next has already been set
  - getNext
```
public final Converter<E> getNext()
```
    Gets the next converter in the chain.
    
    Returns:
    
    the next converter, or null if not set