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Created two instance use mapSingleton

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wersling

18 Jun, 2010 01:44 AM

Hi All,

I updated RL to 1.1.1, i find a bug:

1.in StartupCommand.as class, i maped a singleton class:HttpService and maped a Event class, like this:

injector.mapSingleton(HttpService); commandMap.mapEvent(ContextEvent.STARTUP_COMPLETE, InitHttpServiceCommand);

2.in InitHttpServiceCommand.as, i inject HttpService. like this:

[Inject] public var httpService:HttpService;

3.when i startup complete, in Flash Player 10.0.2.54, the RL created 2 instance. in Flash Player 10.1.50.4304 no bug.

4.i used describeType function to check HttpService.as, i find the 2 version flash player got different xml:

in Flash Player 10.0.2.54:
<constructor> <parametar index="1" type="*" optional="true"/> </constructor>

in Flash Player 10.1.50.4304:
<constructor> <parametar index="1" type="String" optional="true"/> </constructor>

I guess this is the bug origin?

Who can help me fix the bug or give me some suggestion? thanks!

1. 1 Posted by wersling on 18 Jun, 2010 02:23 AM

   

   additional: the HttpService have a param:

   public function HttpService(path:String = null)
   {

   this.path = path;
   

   }

   • Edit

2. Support Staff 2 Posted by Till Schneidere... on 18 Jun, 2010 08:32 AM

   

   This is a known problem in earlier versions of the Flash Player.
   Specifically, the bug causes describeType to return incomplete
   information about constructor parameters until the class has been
   instantiated at least once.

   As you have already found out, the bug is fixed in Flash Player 10.1.
   As SwiftSuspenders (the dependency injection solution used in
   Robotlegs) automatically detects if a dummy instance has to be
   instantiated based on the information it gets from describeType, it
   doesn't create the dummy instance in the newest Flash Player versions
   anymore.

   For more information, please see the section "Problems with
   constructor injection" in the SwiftSuspenders readme at
   http://github.com/tschneidereit/SwiftSuspenders/#readme

   • Edit

3. Shaun Smith closed this discussion on 20 Jun, 2010 04:19 PM.