com.vaadin.util
Class CurrentInstance

java.lang.Object
  com.vaadin.util.CurrentInstance

public class CurrentInstance
extends java.lang.Object

Keeps track of various thread local instances used by the framework.

Since:

7.0.0

Version:

@VERSION@

Author:

Vaadin Ltd

Method Summary

static void	clearAll() Clears all current instances.
static <T> T	get(java.lang.Class<T> type) Gets the current instance of a specific type if available.
static <T> void	set(java.lang.Class<T> type, T instance) Sets the current instance of the given type.
static <T> void	setInheritable(java.lang.Class<T> type, T instance) Sets the current inheritable instance of the given type.

Methods inherited from class java.lang.Object

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

Method Detail

get

public static <T> T get(java.lang.Class<T> type)

Gets the current instance of a specific type if available.

Parameters:

type - the class to get an instance of

Returns:

the current instance or the provided type, or null if there is no current instance.

set

public static <T> void set(java.lang.Class<T> type,
                           T instance)

Sets the current instance of the given type.

Parameters:

type - the class that should be used when getting the current instance back

instance - the actual instance

See Also:

setInheritable(Class, Object), ThreadLocal

setInheritable

public static <T> void setInheritable(java.lang.Class<T> type,
                                      T instance)

Sets the current inheritable instance of the given type. A current instance that is inheritable will be available for child threads.

Parameters:

type - the class that should be used when getting the current instance back

instance - the actual instance

See Also:

set(Class, Object), InheritableThreadLocal

clearAll

public static void clearAll()

Clears all current instances.