Package org.apache.logging.log4j.spi

Class LoggerRegistry<T extends ExtendedLogger>

java.lang.Object

org.apache.logging.log4j.spi.LoggerRegistry<T>

public class LoggerRegistry<T extends ExtendedLogger>
extends Object

Convenience class to be used by LoggerContext implementations.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LoggerRegistry.ConcurrentMapFactory<T extends ExtendedLogger>	Generates ConcurrentHashMaps for use by the registry to store the Loggers.
static interface	LoggerRegistry.MapFactory<T extends ExtendedLogger>	Interface to control the data structure used by the registry to store the Loggers.
static class	LoggerRegistry.WeakMapFactory<T extends ExtendedLogger>	Generates WeakHashMaps for use by the registry to store the Loggers.

Constructor Summary

Constructors

Constructor	Description
LoggerRegistry()
LoggerRegistry(LoggerRegistry.MapFactory<T> factory)

Method Summary

Modifier and Type	Method	Description
T	getLogger(String name)	Returns an ExtendedLogger.
T	getLogger(String name, MessageFactory messageFactory)	Returns an ExtendedLogger.
Collection<T>	getLoggers()
Collection<T>	getLoggers(Collection<T> destination)
boolean	hasLogger(String name)	Detects if a Logger with the specified name exists.
boolean	hasLogger(String name, Class<? extends MessageFactory> messageFactoryClass)	Detects if a Logger with the specified name and MessageFactory type exists.
boolean	hasLogger(String name, MessageFactory messageFactory)	Detects if a Logger with the specified name and MessageFactory exists.
void	putIfAbsent(String name, MessageFactory messageFactory, T logger)

Methods inherited from class java.lang.Object

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

Constructor Details

LoggerRegistry

public LoggerRegistry()

LoggerRegistry

public LoggerRegistry(LoggerRegistry.MapFactory<T> factory)

Method Details

getLogger

public T getLogger(String name)

Returns an ExtendedLogger.

Parameters:

name - The name of the Logger to return.

Returns:

The logger with the specified name.

getLogger

public T getLogger(String name,
 MessageFactory messageFactory)

Returns an ExtendedLogger.

Parameters:

name - The name of the Logger to return.

messageFactory - The message factory is used only when creating a logger, subsequent use does not change the logger but will log a warning if mismatched.

Returns:

The logger with the specified name.

getLoggers

public Collection<T> getLoggers()

getLoggers

public Collection<T> getLoggers(Collection<T> destination)

hasLogger

public boolean hasLogger(String name)

Detects if a Logger with the specified name exists.

Parameters:

name - The Logger name to search for.

Returns:

true if the Logger exists, false otherwise.

hasLogger

public boolean hasLogger(String name,
 MessageFactory messageFactory)

Detects if a Logger with the specified name and MessageFactory exists.

Parameters:

name - The Logger name to search for.

messageFactory - The message factory to search for.

Returns:

true if the Logger exists, false otherwise.

Since:

2.5

hasLogger

public boolean hasLogger(String name,
 Class<? extends MessageFactory> messageFactoryClass)

Detects if a Logger with the specified name and MessageFactory type exists.

Parameters:

name - The Logger name to search for.

messageFactoryClass - The message factory class to search for.

Returns:

true if the Logger exists, false otherwise.

Since:

2.5

putIfAbsent

public void putIfAbsent(String name,
 MessageFactory messageFactory,
 T logger)