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 java.lang.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.

Field Summary

Fields

Modifier and Type	Field	Description
private static java.lang.String	DEFAULT_FACTORY_KEY
private LoggerRegistry.MapFactory<T>	factory
private java.util.Map<java.lang.String,java.util.Map<java.lang.String,T>>	map

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_FACTORY_KEY

private static final java.lang.String DEFAULT_FACTORY_KEY

factory

private final LoggerRegistry.MapFactory<T extends ExtendedLogger> factory

map

private final java.util.Map<java.lang.String,java.util.Map<java.lang.String,T extends ExtendedLogger>> map

Constructor Detail

LoggerRegistry

public LoggerRegistry()

LoggerRegistry

public LoggerRegistry(LoggerRegistry.MapFactory<T> factory)

Method Detail

factoryClassKey

private static java.lang.String factoryClassKey(java.lang.Class<? extends MessageFactory> messageFactoryClass)

factoryKey

private static java.lang.String factoryKey(MessageFactory messageFactory)

getLogger

public T getLogger(java.lang.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(java.lang.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 java.util.Collection<T> getLoggers()

getLoggers

public java.util.Collection<T> getLoggers(java.util.Collection<T> destination)

getOrCreateInnerMap

private java.util.Map<java.lang.String,T> getOrCreateInnerMap(java.lang.String factoryName)

hasLogger

public boolean hasLogger(java.lang.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(java.lang.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(java.lang.String name,
                         java.lang.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(java.lang.String name,
                        MessageFactory messageFactory,
                        T logger)