Comments on: PureMVC actors and their responsibilities

By: Arno

Arno — Wed, 24 Jun 2009 06:59:58 +0000

Thanks for the example and explanation. It is much clearer now

By: Mariush T.

Mariush T. — Tue, 23 Jun 2009 22:28:38 +0000

There are two ways of getting this data in Command:
1.You can retrieve proxy and get the data
var usersProxy:UsersProxy = facade.retrieveProxy( UsersProxy.NAME ) as UsersProxy;
var users:ArrayCollection = usersProxy.users;
2.Proxy can send data together within Notification, Command gets data from the body of Notification
var users:ArrayCollection = notification.getBody() as ArrayCollection;

DeleteUserCommand

Yes, You’re right. Proxy sends Notification, interested mediators receive notification or commands are triggered. Commands are not allow to receive notification, they are instantiated and executed by the Controller. In order to trigger command, you need to register Command. registerCommand(CategoriesProxy.CATEGORIES_RECEIVED, ManipulateDataCommand).
public class ManipulateDataCommand extends SimpleCommand
{
override public function execute(notification:INotification):void
{
var categories:ArrayCollection = notification.getBody() as ArrayCollection;
.. manipulate data
}
}
To better understand Commands, think about Commands as an object with only 1 second lifecycle, they are instantiated, executed and gone. There is no time for them to listen for notification in such a short period of life

By: Arno

Arno — Tue, 23 Jun 2009 15:00:10 +0000

If the command’s function is to manipulate data before display how does he get this data? When you receive the data in the proxy you send a notification that you receive in the mediator. Or do i get something wrong? Or are you allowed to receive notifications in the command?

thank you in advance

By: Tom

Tom — Fri, 29 May 2009 10:07:03 +0000

Well done

By: Cliff Hall

Cliff Hall — Thu, 28 May 2009 23:24:58 +0000

Excellent examples and presentation here, Mariush. The CarOwnersProxy is particularly well conceived.

-=Cliff>