Passing args to a constructor through ClassFactory.newInstance?

Question

I know how I can create a new instance of a class using getDefinitionByName and using ClassFactory.newInstance, and I know I can also add properties to be set by adding them to the classFactory properties field. However, what I do not know how to do is how do I make sure a constructor is called with certain arguments?
In my case I'm creating an instance of classes (by a string name) that all have a constructor signature like the following (just as an example):
public function Foo(boo:String) {
    this.boo = boo;
    init();
Do I need to extend ClassFactory and override newInstance() and handle it there somehow?
Thanks

Answer 1

You'd need to write a custom IFactory--I don't think ClassFactory can do what you want. That said, this shouldn't be hard:
public class ConstructorFactory implements IFactory {
  private var _class:Class;
  public var properties:Object;
  public var constructorArgs:Array;
  public function newInstance():* {
    var result:*;
    // Unfortunatley, there's no such thing as apply for a constructor, so you have to resort to this ugly hack:
    switch (constructorArgs.length) {
      case 0: result = new _class(); break;
      case 1: result = new _class(constructorArgs[0]); break;
      case 2: result = new _class(constructorArgs[0], constructorArgs[1]); break;
    for (var key:String in properties) {
      result[key] = properties[key];  
    return result;