Comments on: PureMVC Tutorial - Flex, PureMVC, Jabber and XIFF 3: Part 2 - Directory structure http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/ Professional and reliable UK based Actionscript development Tue, 09 Mar 2010 21:43:04 +0000 http://wordpress.org/?v=2.5.1 By: devdave http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-372 devdave Thu, 07 Jan 2010 08:17:10 +0000 http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-372 Hi Maruish, Officially speaking you are quite right - AS3 events are only used for communication between the view and mediator so they do belong in the view folder. However, have a quick read of the end of part 7 of the tutorial. After lots of development with PureMVC I have found that it is very often the case that the parameters I need to pass to a command are exactly the same as the attributes within the event that triggered it. For example, clicking 'Login' in the login page dispatches an event LoginViewEvent.LOGIN with attributes 'username' and 'password'. This gets picked up by the associated mediator which then dispatches a ApplicationFacade.LOGIN notification which triggers LoginCommand. And what parameters does LoginCommand need? 'username' and 'password', of course; exactly the parameters within the event. Therefore rather than creating untyped objects or extra value objects I opt for reusing the event class for the commands themselves, and this is the reason why the events folder is at the top level rather than in view. I am fully aware that it can be argued that this breaks encapsulation, but I've never really seen a practical downside to this approach (so far!) and I think the benefits far outweigh the extra hassle of creating redundant objects to pass to commands. Hope that makes sense! Dave Hi Maruish,

Officially speaking you are quite right - AS3 events are only used for communication between the view and mediator so they do belong in the view folder.

However, have a quick read of the end of part 7 of the tutorial. After lots of development with PureMVC I have found that it is very often the case that the parameters I need to pass to a command are exactly the same as the attributes within the event that triggered it.

For example, clicking ‘Login’ in the login page dispatches an event LoginViewEvent.LOGIN with attributes ‘username’ and ‘password’. This gets picked up by the associated mediator which then dispatches a ApplicationFacade.LOGIN notification which triggers LoginCommand. And what parameters does LoginCommand need? ‘username’ and ‘password’, of course; exactly the parameters within the event. Therefore rather than creating untyped objects or extra value objects I opt for reusing the event class for the commands themselves, and this is the reason why the events folder is at the top level rather than in view.

I am fully aware that it can be argued that this breaks encapsulation, but I’ve never really seen a practical downside to this approach (so far!) and I think the benefits far outweigh the extra hassle of creating redundant objects to pass to commands.

Hope that makes sense!

Dave

]]> By: Mariush T. http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-369 Mariush T. Fri, 01 Jan 2010 23:57:29 +0000 http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-369 Hi Dave, AS3 events are related to the View tier so I would put 'events' folder into a 'view' folder. -org --davekeen ---xiffer ----controller ----model -----vo -----enum ----view -----components -----events <a href="http://www.mariusht.com/blog/" rel="nofollow">Mariush T.</a> Freelance Flex Developer Hi Dave,

AS3 events are related to the View tier so I would put ‘events’ folder into a ‘view’ folder.

-org
–davekeen
—xiffer
—-controller
—-model
—–vo
—–enum
—-view
—–components
—–events

Mariush T.
Freelance Flex Developer

]]> By: sankar http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-367 sankar Mon, 28 Dec 2009 10:50:10 +0000 http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-367 hi man great tutorial .but i need one more help.Now i am searching for pure MVC framework used on flash as3.if u have any application like that please send to my id sankar.niit@yahoo.co.in.Thanks in advance .please urgent hi man great tutorial .but i need one more help.Now i am searching for pure MVC framework used on flash as3.if u have any application like that please send to my id sankar.niit@yahoo.co.in.Thanks in advance .please urgent

]]> By: devdave http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-309 devdave Sun, 20 Sep 2009 01:39:25 +0000 http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-309 High praise indeed! And extra fun because I managed to take a month to reply :) High praise indeed! And extra fun because I managed to take a month to reply :)

]]> By: mapDev http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-297 mapDev Thu, 13 Aug 2009 03:15:18 +0000 http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-297 Hi Dave, The tutorial is great. Thanks! I just happened across this while looking for info on purmvc. More than you're tutorial, I love how you interact with people who comment. Every question has a response... that's frickin' crazy. You make me want to re-read every Dale Carnegie and John Maxwell book. You truly are contemporarily-charismatic (creative commons mapDev). Cheers. You've got me hooked. Hi Dave,

The tutorial is great. Thanks! I just happened across this while looking for info on purmvc. More than you’re tutorial, I love how you interact with people who comment. Every question has a response… that’s frickin’ crazy. You make me want to re-read every Dale Carnegie and John Maxwell book. You truly are contemporarily-charismatic (creative commons mapDev). Cheers. You’ve got me hooked.

]]> By: Ramesh http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-245 Ramesh Sun, 29 Mar 2009 06:23:45 +0000 http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-245 Very nice tutorial about MVC Framework. Thanks alot. Very nice tutorial about MVC Framework. Thanks alot.

]]> By: devdave http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-191 devdave Thu, 08 Jan 2009 09:26:00 +0000 http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-191 Hey Azziel, You are 100% correct :) Well spotted. I've updated that in the tutorial. Cheers, Dave Hey Azziel,

You are 100% correct :) Well spotted. I’ve updated that in the tutorial.

Cheers,

Dave

]]> By: Azziel http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-187 Azziel Thu, 08 Jan 2009 09:19:37 +0000 http://www.actionscriptdeveloper.co.uk/puremvc-tutorial-flex-puremvc-jabber-and-xiff-3-part-2-directory-structure/#comment-187 hi dave just want to clear some thing ( "right click on XIFFer and create org" ) if i follow this start i well and up w/ this -Xiffer -lib -src -org --davekeen ---xiff ----cotroler ----evets ----model ----view w/ is wrong.. right? because this should be like this -Xiffer -lib -src --org ---davekeen ----xiff -----cotroler -----evets -----model -----view org should be inside src folder right? hi dave

just want to clear some thing ( “right click on XIFFer and create org” ) if i follow this start i well and up w/ this

-Xiffer
-lib
-src
-org
–davekeen
—xiff
—-cotroler
—-evets
—-model
—-view

w/ is wrong.. right? because this should be like this

-Xiffer
-lib
-src
–org
—davekeen
—-xiff
—–cotroler
—–evets
—–model
—–view

org should be inside src folder right?

]]>