MVCRouteEventsMetaDataProcessor problem with non-Flex project

[marcaia]

Hi,
i tried to develop a simple application using MVC micro-framework in pure as3 project.

The most important question is...
Can i use MVC micro-framework in a pure as3 Project?

if no...DOH ,else

I've some troubles when i use [RouteMVCEvents] metatag.
in my case,
when MVCRouteEventsMetaDataProcessor.rerouteToEventBus( ) method is called, the owner variable is null


This is what happens:

compiler arguments i used are:

-keep-as3-metadata+=Autowired
-keep-as3-metadata+=EventHandler
-keep-as3-metadata+=RouteEvents

I tried 2 different kind of DefaultAutowiringStageProcessor definition

The first one is:

<object id="autowiringStageProcessor" class="org.springextensions.actionscript.stage.DefaultAutowiringStageProcessor"/>

Main.as

[RouteMVCEvents]
[Event(name="startupEvent",type="command.control.StartupEvent")]
public class Main extends Sprite {
	private var context : XMLApplicationContext;
	{		
        StartupCommand;
        MVCControllerObjectFactoryPostProcessor;
	DefaultAutowiringStageProcessor;		
	FlexStageDefaultObjectSelector;

	}
	public function Main() {
		FlashStageProcessorRegistry.getInstance().stage = stage;
		context = new XMLApplicationContext("application-context.xml");
		context.addEventListener(Event.COMPLETE, handleComplete_CONTEXT);
		context.load();
			
	}

	private function handleComplete_CONTEXT(ev : Event) : void {
		context.removeEventListener(Event.COMPLETE, handleComplete_CONTEXT);
		var cgEvent : StartupEvent = new StartupEvent();
		dispatchEvent(cgEvent);
	}
}

I omited the StartupCommand, but there is [Command(eventType="startupEvent")] metatag

Result: the Dispatched Event do nothing and in log1.txt is the log

The second one is:

 <object id="autowiringStageProcessor"
        class="org.springextensions.actionscript.stage.DefaultAutowiringStageProcessor">
        <property name="objectSelector">
            <object class="stage.CustomObjectSelector"/>
        </property>

and in the Main.as i added

{
	StartupCommand;	
	MVCControllerObjectFactoryPostProcessor;
	DefaultAutowiringStageProcessor;
	CustomObjectSelector;
	FlexStageDefaultObjectSelector;
	
}

Results:
the owner variable in MVCRouteEventsMetaDataProcessor/rerouteToEventBus() is null and so when it try to create a new MVCEvent, the required parameter is null and throw an error.

Thanks a lot
Marco

[666shooter]

Hey there,

are you using the 1.1 drop? If so, can you try compiling from the SVN trunk? I seem to recall fixing a bug concerning the owner property just last week.
If you have problems creating your own build drop me a PM and I'll email you a swc.
If you are using Maven then simply add a dependency to the 1.2-SNAPSHOT and you should have the latest build.

cheers,

Roland

[marcaia]

Hi,
as you said in SAS 1.1 owner variable is null and so throw an error.

My bad solution is to dispatch MVCEvent directly

EventBus.dispatchEvent(new MVCEvent(null, cgEvent));

I know it's not a solution but a trick, but my goal was to understand


About SAS 1.2 (i think) i used svn source but i'm not sure i did the right workflow,because i need to add

as3commons-eventbus-1.1.1 to import IEventBusAware interface

and

as3commons Collections 1.1 to import WeakLinkedList class


well...

i tried to compile SWC with FDT 4, flex Hero SDK

but i don't know all the metatags that I need to "keep"

reading this post I found a list of metatags, that I CUT&PASTE, but nothing happens :P

Is there a little tutorial on which METATAGS are necessary or how to compile SAS SWC?, so that any updates on svn source can be accessible


Thanks a lot.

P.S.
I love this framework. i'm self-taught developer and when i read about this project i learned a lot of new concepts...
GREAT PROJECT

[marcaia]

Hi,
I used Intellij IDEA Maven plugin to build SAS 1.2.
This was my first time so i think i forget some metatag somewhere

The good news is that SAS 1.2 wraps Event in MVCEvent in non-Flex project.



this is the piece of LOG trace

21:35:8.896 DEBUG - FlashStageProcessorRegistry - Stage processing completed
21:35:8.896 DEBUG - FlashStageProcessorRegistry - FlashStageProcessorRegistry was initialized
21:35:8.898 DEBUG - EventBus - Notified eventbus listener [object EventBusAdapter] of event [MVCEvent(document=[null], event=[Event type="startupEvent" bubbles=false cancelable=false eventPhase=2], bubbles=false, cancelable=false)]
21:35:8.898 DEBUG - EventBus - Notified eventbus listener [object AS3CommonsEventBusListener] of event [MVCEvent(document=[null], event=[Event type="startupEvent" bubbles=false cancelable=false eventPhase=2], bubbles=false, cancelable=false)] for topic null

Next step is to understand why StartupCommand can't handle the event.
I can bet on a Metatag missing

I think so, because when i compile my example with MXML, FlexXMLApplicationContext and SAS 1.1 everythings works fine, but when I compile my example with MXML, FlexXMLApplicationContext and SAS 1.2, the "trace" is not shown.



Main.as

[RouteMVCEvents]
[Event(name="startupEvent",type="command.control.StartupEvent")]

StartupCommand.as

[Command(eventType="startupEvent")]
	public class StartupCommand {
		public function execute(event : StartupEvent) : void {
			trace("startupCommand.execute");
			
		}
	}

and application-context.xml

<?xml version="1.0" encoding="utf-8"?>
<objects xmlns="http://www.springactionscript.org/schema/objects"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springactionscript.org/schema/objects
					http://www.springactionscript.org/schema/objects/spring-actionscript-objects-1.0.xsd">

	<object id="eventhandlerProcessor"
		class="org.springextensions.actionscript.ioc.factory.config.EventHandlerMetadataProcessor" />
	<object id="autowiringStageProcessor"
		class="org.springextensions.actionscript.stage.DefaultAutowiringStageProcessor">
		<property name="objectSelector">
			<object class="stage.CustomObjectSelector" />
		</property>
	</object>

	<object id="mvcFactory"
		class="org.springextensions.actionscript.core.mvc.MVCControllerObjectFactoryPostProcessor" />

	<object id="startupCommand" class="command.StartupCommand"
		scope="prototype" />
</objects>

[prof]

Hi,
...
I've some troubles when i use [RouteMVCEvents] metatag.
...
-keep-as3-metadata+=RouteEvents
...
Main.as

[RouteMVCEvents]
[Event(name="startupEvent",type="command.control.StartupEvent")]
public class Main extends Sprite {
...

RouteEvents != RouteMVCEvents

[marcaia]

probably my bad English doesn't help


Looking around, i read that SWC keep METADATA.
in SAS 1.1 a list of metatags to keep is defined in pom.xml.

i found this

 <keepAs3Metadatas>
<param>Autowired</param>
                        <param>Inject</param>
			<param>Command</param>
			<param>Component</param>
			<param>Constructor</param>
			<param>Event</param>
			<param>EventHandler</param>
			<param>Property</param>
			<param>Invoke</param>
			<param>PostConstruct</param>
			<param>PreDestroy</param>
			<param>Required</param>
			<param>RouteEvents</param>
			<param>RouteMVCEvents</param>
</keepAs3Metadatas>

so these metatags are included. In fact I delete compiler arguments "-keep-as3-metadata" and the MVC example works fine.

At the moment, my troubles is listen to dispatched event with SAS 1.2

I built spring-actionscript-core-1.2-SNAPSHOT.swc with Maven plugin in Intellij IDEA

metadata [RouteMVCEvents] is registered

18:27:29.301 DEBUG - MetadataProcessorObjectPostProcessor - Registered metadata '[RouteMVCEvents]' with processor '[object MVCRouteEventsMetaDataProcessor]'

Singleton StartupCommand is registered for event

18:27:29.355 DEBUG - Controller - command startupCommand registered for event type startupEvent with execute method execute and priority 0

metadata [Event] found for event

18:27:29.605 DEBUG - MVCRouteEventsMetaDataProcessor - Found [Event] metadata for event startupEvent
18:27:29.611 DEBUG - MVCRouteEventsMetaDataProcessor - added listener for event type 'startupEvent' on [object Main]

event is dispatched

18:31:53.865 DEBUG - EventBus - Notified eventbus listener [object AS3CommonsEventBusListener] of event [MVCEvent(document=[null], event=[Event type="startupEvent" bubbles=false cancelable=false eventPhase=2], bubbles=false, cancelable=false)] for topic null
18:31:53.865 DEBUG - EventBus - Notified eventbus listener [object EventBusAdapter] of event [MVCEvent(document=[null], event=[Event type="startupEvent" bubbles=false cancelable=false eventPhase=2], bubbles=false, cancelable=false)]

but trace in StartupCommand execute method is not shown...

[666shooter]

Hey there,

I'm sorry to hear you're still having issues with the MVC system. I do believe you're very close to having things working though. This might be a last bug in SpringAS.
Therefore I'd like to ask you if it might be possible for you to post a small sample application here that demonstrates your problem. In that case I can investigate a little easier what's going wrong and might be able to fix the problem.

Thank you very much in advance,

cheers,

Roland

[marcaia]

Hi Roland,

I did a sample with SAS 1.1 and SAS 1.2 .
I omited SWCS for file-size reasons. There is a screenshot too

n.b.
Spring Actionscript - Framework Source.swc is the SAS 1.2 built with FDT

thanks for your availability
Marco

I was reading the code, is it possible that eventBus is not assigned to Controller? and when framework checks if dispatching through eventbus it skips?or it's a nonsense

in MVCControllerObjectFactoryPostProcessor class i added this line and it works, but I'm not sure it is just a trick

public function addMVControllerInstance(objectFactory:IConfigurableListableObjectFactory):IController {
			Assert.notNull(objectFactory, "the objectFactory argument must not be null");
			var names:Array = objectFactory.getObjectNamesForType(IController);
			if (names.length < 1) {
				var controller:Controller = objectFactory.createInstance(Controller);
				controller.eventBus=objectFactory.eventBus;
				objectFactory.registerSingleton(CONTROLLER_OBJECT_NAME, controller);
				return controller;
			} else {
				return objectFactory.getObject(String(names[0]));
			}
		}

[666shooter]

Hey Marco,

I think you are right actually, the eventbus doesn't get assigned automatically yet to the controller. This is something I need to build into the spring container still. Your fix is indeed valid, good catch!

cheers,

Roland