Package org.apache.log4j.spi

Contains part of the System Programming Interface (SPI) needed to extend log4j.

See:
Description

Interface Summary

AppenderAttachable	Interface for attaching appenders to objects.
Configurator	Implemented by classes capable of configuring log4j using a URL.
ErrorCode	This interface defines commonly encoutered error codes.
ErrorHandler	Appenders may delegate their error handling to ErrorHandlers.
HierarchyEventListener	Listen to events occuring within a Hierarchy.
LoggerFactory	Implement this interface to create new instances of Logger or a sub-class of Logger.
LoggerRepository	A LoggerRepository is used to create and retrieve Loggers.
OptionHandler	A string based interface to configure package components.
RendererSupport
RepositorySelector	The LogManager uses one (and only one) RepositorySelector implementation to select the LoggerRepository for a particular application context.
TriggeringEventEvaluator	Implementions of this interface allow certain appenders to decide when to perform an appender specific action.

Class Summary

DefaultRepositorySelector
Filter	Users should extend this class to implement customized logging event filtering.
LocationInfo	The internal representation of caller location information.
LoggingEvent	The internal representation of logging events.
RootCategory	Deprecated. Replaced by RootLogger.
RootLogger	RootLogger sits at the top of the logger hierachy.
ThrowableInformation	ThrowableInformation is log4j's internal representation of throwables.

Package org.apache.log4j.spi Description

Contains part of the System Programming Interface (SPI) needed to extend log4j.