org.apache.logging.log4j.spi
Class DefaultThreadContextMap

java.lang.Object
  org.apache.logging.log4j.spi.DefaultThreadContextMap

All Implemented Interfaces:

ThreadContextMap

public class DefaultThreadContextMap
extends Object
implements ThreadContextMap

The actual ThreadContext Map. A new ThreadContext Map is created each time it is updated and the Map stored is always immutable. This means the Map can be passed to other threads without concern that it will be updated. Since it is expected that the Map will be passed to many more log events than the number of keys it contains the performance should be much better than if the Map was copied for each event.

Field Summary

static String

INHERITABLE_MAP Property name ("isThreadContextMapInheritable") for selecting InheritableThreadLocal (value "true") or plain ThreadLocal (value is not "true") in the implementation.

Constructor Summary

DefaultThreadContextMap(boolean useMap)

Method Summary

void	clear() Clear the context.
boolean	containsKey(String key) Determine if the key is in the context.
boolean	equals(Object obj)
String	get(String key) Get the context identified by the key parameter.
Map<String,String>	getCopy() Get a non-null mutable copy of current thread's context Map.
Map<String,String>	getImmutableMapOrNull() Return an immutable view on the context Map or null if the context map is empty.
int	hashCode()
boolean	isEmpty() Returns true if the Map is empty.
void	put(String key, String value) Put a context value (the o parameter) as identified with the key parameter into the current thread's context map.
void	remove(String key) Remove the the context identified by the key parameter.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

INHERITABLE_MAP

public static final String INHERITABLE_MAP

Property name ("isThreadContextMapInheritable") for selecting InheritableThreadLocal (value "true") or plain ThreadLocal (value is not "true") in the implementation.

See Also:

Constant Field Values

Constructor Detail

DefaultThreadContextMap

public DefaultThreadContextMap(boolean useMap)

Method Detail

put

public void put(String key,
                String value)

Description copied from interface: ThreadContextMap

Put a context value (the o parameter) as identified with the key parameter into the current thread's context map.

If the current thread does not have a context map it is created as a side effect.

Specified by:

put in interface ThreadContextMap

Parameters:

key - The key name.

value - The key value.

get

public String get(String key)

Description copied from interface: ThreadContextMap

Get the context identified by the key parameter.

This method has no side effects.

Specified by:

get in interface ThreadContextMap

Parameters:

key - The key to locate.

Returns:

The value associated with the key or null.

remove

public void remove(String key)

Description copied from interface: ThreadContextMap

Remove the the context identified by the key parameter.

Specified by:

remove in interface ThreadContextMap

Parameters:

key - The key to remove.

clear

public void clear()

Description copied from interface: ThreadContextMap

Clear the context.

Specified by:

clear in interface ThreadContextMap

containsKey

public boolean containsKey(String key)

Description copied from interface: ThreadContextMap

Determine if the key is in the context.

Specified by:

containsKey in interface ThreadContextMap

Parameters:

key - The key to locate.

Returns:

True if the key is in the context, false otherwise.

getCopy

public Map<String,String> getCopy()

Description copied from interface: ThreadContextMap

Get a non-null mutable copy of current thread's context Map.

Specified by:

getCopy in interface ThreadContextMap

Returns:

a mutable copy of the context.

getImmutableMapOrNull

public Map<String,String> getImmutableMapOrNull()

Description copied from interface: ThreadContextMap

Return an immutable view on the context Map or null if the context map is empty.

Specified by:

getImmutableMapOrNull in interface ThreadContextMap

Returns:

an immutable context Map or null.

isEmpty

public boolean isEmpty()

Description copied from interface: ThreadContextMap

Returns true if the Map is empty.

Specified by:

isEmpty in interface ThreadContextMap

Returns:

true if the Map is empty, false otherwise.

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object