org.jboss.weld.bootstrap.api

Interface Singleton<T>

public interface Singleton<T>

Holds a reference to an application singleton. This singleton is used internally by Weld to store various application scoped objects. This allows Weld to operate as a shared library. In a shared mode, the same instance of Weld implementation is used by all the applications in a server environment. In the exclusive mode, each application loads a separate copy of Weld implementation at the application level. Alternative implementations of Singleton can be used as required

Author:

Sanjeeb.Sahoo@Sun.COM, Pete Muir

See Also:

SingletonProvider

Method Summary

Modifier and Type	Method and Description
void	clear() Clear the singleton
T	get() Access the singleton
boolean	isSet() Check if the singleton is set
void	set(T object) Store a singleton

Method Detail

get

T get()

Access the singleton

Returns:

a singleton object

Throws:

IllegalStateException - if the singleton is not set

isSet

boolean isSet()

Check if the singleton is set

Returns:

true if the singleton is set

set

void set(T object)

Store a singleton

Parameters:

object - the object to store

clear

void clear()

Clear the singleton