org.exoplatform.container.context
Class ContextManagerImpl

java.lang.Object
  org.exoplatform.container.context.ContextManagerImpl

All Implemented Interfaces:

ThreadContextHolder, ContextManager

public class ContextManagerImpl
extends Object
implements ContextManager, ThreadContextHolder

The basic implementation of a ContextManager based on a ConcurrentHashMap that is filled thanks to a component plugins.

Version:

$Id$

Author:

Nicolas Filotto

Field Summary

Fields inherited from interface org.exoplatform.container.component.ThreadContextHolder

MANAGE_THREAD_LOCAL

Constructor Summary

ContextManagerImpl()

Method Summary

<K> void	addContext(AdvancedContext<K> ctx) Registers a context
void	addContexts(ContextPlugin plugin) Adds all the contexts defined in the given plugin
<K> AdvancedContext<K>	getContext(Class<? extends Annotation> scope) Gives the context corresponding to the given scope
ThreadContext	getThreadContext() Gives the value corresponding to the context of the thread
boolean	hasContext(Class<? extends Annotation> scope) Indicates whether or not a context has a been registered for the given scope

Methods inherited from class java.lang.Object

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

Constructor Detail

ContextManagerImpl

public ContextManagerImpl()

Method Detail

getContext

public <K> AdvancedContext<K> getContext(Class<? extends Annotation> scope)
                              throws IllegalStateException

Gives the context corresponding to the given scope

Specified by:

getContext in interface ContextManager

Parameters:

scope - the annotation class corresponding to the scope

Returns:

the Context corresponding to the given scope

Throws:

IllegalStateException

hasContext

public boolean hasContext(Class<? extends Annotation> scope)

Indicates whether or not a context has a been registered for the given scope

Specified by:

hasContext in interface ContextManager

Parameters:

scope - the scope of the context

Returns:

true if it exists a context for the given scope, false otherwise

addContext

public <K> void addContext(AdvancedContext<K> ctx)

Registers a context

Specified by:

addContext in interface ContextManager

Parameters:

ctx - the Context to register

addContexts

public void addContexts(ContextPlugin plugin)

Adds all the contexts defined in the given plugin

getThreadContext

public ThreadContext getThreadContext()

Gives the value corresponding to the context of the thread

Specified by:

getThreadContext in interface ThreadContextHolder

Returns:

a new instance of ThreadContext if there are some valuable ThreadLocal variables to share otherwise null is expected