org.apache.log4j.varia

Class FallbackErrorHandler

Implemented Interfaces:
ErrorHandler, OptionHandler

public class FallbackErrorHandler
extends Object
implements ErrorHandler

The FallbackErrorHandler implements the ErrorHandler interface such that a secondary appender may be specified. This secondary appender takes over if the primary appender fails for whatever reason.

The error message is printed on System.err, and logged in the new secondary appender.

Author:
Ceki Gücü

Constructor Summary

FallbackErrorHandler()

Method Summary

void
activateOptions()
No options to activate.
void
error(String message)
Print a the error message passed as parameter on System.err.
void
error(String message, Exception e, int errorCode)
Prints the message and the stack trace of the exception on System.err.
void
error(String message, Exception e, int errorCode, LoggingEvent event)
Prints the message and the stack trace of the exception on System.err.
void
setAppender(Appender primary)
The appender to which this error handler is attached.
void
setBackupAppender(Appender backup)
Set the backup appender.
void
setLogger(Logger logger)
Adds the logger passed as parameter to the list of loggers that we need to search for in case of appender failure.

Constructor Details

FallbackErrorHandler

public FallbackErrorHandler()

Method Details

activateOptions

public void activateOptions()
No options to activate.
Specified by:
activateOptions in interface OptionHandler

error

public void error(String message)
Print a the error message passed as parameter on System.err.
Specified by:
error in interface ErrorHandler

error

public void error(String message,
                  Exception e,
                  int errorCode)
Prints the message and the stack trace of the exception on System.err.
Specified by:
error in interface ErrorHandler

error

public void error(String message,
                  Exception e,
                  int errorCode,
                  LoggingEvent event)
Prints the message and the stack trace of the exception on System.err.
Specified by:
error in interface ErrorHandler

setAppender

public void setAppender(Appender primary)
The appender to which this error handler is attached.
Specified by:
setAppender in interface ErrorHandler

setBackupAppender

public void setBackupAppender(Appender backup)
Set the backup appender.
Specified by:
setBackupAppender in interface ErrorHandler

setLogger

public void setLogger(Logger logger)
Adds the logger passed as parameter to the list of loggers that we need to search for in case of appender failure.
Specified by:
setLogger in interface ErrorHandler

Copyright 2000-2005 Apache Software Foundation.