Class MDC

java.lang.Object

org.jboss.logging.MDC

public final class MDC
extends Object

Mapped diagnostic context. Each log provider implementation may behave different.

Method Summary

Modifier and Type	Method	Description
static void	clear()	Clears the message diagnostics context.
static Object	get(String key)	Returns the value for the key or null if no value was found.
static Map<String,Object>	getMap()	Returns the map from the context.
static Object	put(String key, Object val)	Puts the value onto the context.
static void	remove(String key)	Removes the value from the context.

Methods inherited from class Object

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

Method Details

put

public static Object put(String key,
 Object val)

Puts the value onto the context.

Parameters:

key - the key for the value

val - the value

Returns:

the previous value set or null if no value was set

get

public static Object get(String key)

Returns the value for the key or null if no value was found.

Parameters:

key - the key to lookup the value for

Returns:

the value or null if not found

remove

public static void remove(String key)

Removes the value from the context.

Parameters:

key - the key of the value to remove

getMap

public static Map<String,Object> getMap()

Returns the map from the context.

Note that in most implementations this is an expensive operation and should be used sparingly.

Returns:

the map from the context or an empty map if the context is null

clear

public static void clear()

Clears the message diagnostics context.