AS3 DI Metadata Tags

Posted on 8 September, 2010 by shaun

Spring Actionscript, Dawn, SmartyPants-IOC, Swiz, Parsley and SwiftSuspenders (used by Robotlegs) perform Dependency Injection.

Moreover they can all perform automatic DI by parsing class metadata. It would be grand if the common DI related metadata tags could be standardised. That way we really could write code that is decoupled from any particular framework.

I’ve started a little document over at GitHub:

http://github.com/darscan/AS3-DI-Metadata

I don’t know the libraries well enough to fill in all the details, so if you could fork the repo and edit the doc that would be great! Also, the format/layout could be better, so if you have any ideas on that front.. edit away.

Posted in Banter, Robotlegs | Tagged , , | 4 Comments
  • Enrique

    What do you think about Funk AS3 IoC?
    http://code.google.com/p/funk-as3/wiki/IoC (is not metadata but they claims that is an advantage in performance…)

  • http://shaun.boyblack.co.za/blog/ shaun

    It’s cool, but it does not perform Dependency Injection (nor does it claim to), and does not enable one to “write code that is decoupled from any particular framework” – it uses the Service Locator pattern to “fetch” dependencies and is coupled to Funk-as3.

  • Johannes Hodde

    Hey,

    I am currently developing a project on top of RobotLegs.
    As much as I like the DI-solution via the [Inject] tags, I dislike the fact, that clients get mutable by having the injectable vars beeing public.
    Is there any way to use implicit setters?

  • http://shaun.boyblack.co.za/blog/ shaun

    Hello,

    Sure, just put [Inject] above your setter. Or, use constructor injection – posted some thoughts on that here: http://shaun.boyblack.co.za/blog/2009/05/01/constructor-injection-vs-setter-injection/