org.apache.log4j.spi
Interface LoggerEventListener

public interface LoggerEventListener

Interface used to listen for Logger related events such as add/remove appender or changing levels. Clients register an instance of the interface and the instance is called back when the various events occur. LoggerRepository provides methods for adding and removing LoggerEventListener instances. When implementing the methods of this interface, it is useful to remember that the Logger can access the repository using its getRepository() method.

Author:

Ceki Gülcü, Mark Womack

Method Summary

void	appenderAddedEvent(org.apache.log4j.Logger logger, org.apache.log4j.Appender appender) Called when an appender is added to the logger.
void	appenderRemovedEvent(org.apache.log4j.Logger logger, org.apache.log4j.Appender appender) Called when an appender is removed from the logger.
void	levelChangedEvent(org.apache.log4j.Logger logger) Called when level changed on the logger.

Method Detail

appenderAddedEvent

void appenderAddedEvent(org.apache.log4j.Logger logger,
                        org.apache.log4j.Appender appender)

Called when an appender is added to the logger.

Parameters:

logger - The logger to which the appender was added.

appender - The appender added to the logger.

appenderRemovedEvent

void appenderRemovedEvent(org.apache.log4j.Logger logger,
                          org.apache.log4j.Appender appender)

Called when an appender is removed from the logger.

Parameters:

logger - The logger from which the appender was removed.

appender - The appender removed from the logger.

levelChangedEvent

void levelChangedEvent(org.apache.log4j.Logger logger)

Called when level changed on the logger.

Parameters:

logger - The logger that changed levels.