net.customware.gwt.dispatch.server
Class LazyActionHandlerRegistry

java.lang.Object
  net.customware.gwt.dispatch.server.LazyActionHandlerRegistry

All Implemented Interfaces:

ActionHandlerRegistry, ClassActionHandlerRegistry

Direct Known Subclasses:

GuiceLazyActionHandlerRegistry

public class LazyActionHandlerRegistry
extends Object
implements ClassActionHandlerRegistry

This is a lazy-loading implementation of the registry. It will only create action handlers when they are first used. All ActionHandler implementations must have a public, default constructor.

Author:

David Peterson

Constructor Summary

LazyActionHandlerRegistry()

Method Summary

<A extends Action<R>,R extends Result> void	addHandlerClass(Class<A> actionClass, Class<? extends ActionHandler<A,R>> handlerClass) Registers the specified ActionHandler class with the registry.
void	clearHandlers() Clears all registered handlers from the registry.
protected ActionHandler<?,?>	createInstance(Class<? extends ActionHandler<?,?>> handlerClass)
<A extends Action<R>,R extends Result> ActionHandler<A,R>	findHandler(A action) Searches the registry and returns the first handler which supports the specied action, or null if none is available.
<A extends Action<R>,R extends Result> void	removeHandlerClass(Class<A> actionClass, Class<? extends ActionHandler<A,R>> handlerClass) Removes any registration of the specified class, as well as any instances which have been created.

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyActionHandlerRegistry

public LazyActionHandlerRegistry()

Method Detail

addHandlerClass

public <A extends Action<R>,R extends Result> void addHandlerClass(Class<A> actionClass,
                                                                   Class<? extends ActionHandler<A,R>> handlerClass)

Description copied from interface: ClassActionHandlerRegistry

Registers the specified ActionHandler class with the registry. The class will only

Specified by:

addHandlerClass in interface ClassActionHandlerRegistry

Parameters:

actionClass - The action class the handler handles.

handlerClass - The handler class.

removeHandlerClass

public <A extends Action<R>,R extends Result> void removeHandlerClass(Class<A> actionClass,
                                                                      Class<? extends ActionHandler<A,R>> handlerClass)

Description copied from interface: ClassActionHandlerRegistry

Removes any registration of the specified class, as well as any instances which have been created.

Specified by:

removeHandlerClass in interface ClassActionHandlerRegistry

findHandler

public <A extends Action<R>,R extends Result> ActionHandler<A,R> findHandler(A action)

Description copied from interface: ActionHandlerRegistry

Searches the registry and returns the first handler which supports the specied action, or null if none is available.

Specified by:

findHandler in interface ActionHandlerRegistry

Parameters:

action - The action.

Returns:

The handler.

createInstance

protected ActionHandler<?,?> createInstance(Class<? extends ActionHandler<?,?>> handlerClass)

clearHandlers

public void clearHandlers()

Description copied from interface: ActionHandlerRegistry

Clears all registered handlers from the registry.

Specified by:

clearHandlers in interface ActionHandlerRegistry