There are two ways I can think of to do this. One would be to have
multiple factory functions, one for each type of object you want to
create. The other would be to create a simple class (FactoryParams or
something like that) which stores all the parameters. You pass that
as the parameter object, and you can have that parameter object be
strongly typed.
class FactoryParams {
public var firstParam:String;
public var secondParam:Number;
public var thirdParam:SomeComplexObject
}
By using a class instead of a generic object you can keep the type
information (and if you use getters/setters instead of public
variables then you can even do validation on the values if you want).
-Andy
On 5/1/07, Listas <[EMAIL PROTECTED]> wrote:
pedr, i would prefer to use the arguments array, instead of an object,
but i´m afraid this isn´t strong typed as you wish
private function createItem(key:String):Void{
switch(key){
case "item_1":
var wid_num:Number = arguments[1];
var y_num:Number = arguments[2];
myItem = new Item_1(wid_num, y_num);
break
case "item2":
var hei_num:Number = arguments[1];
var color_num:Number = arguments[2];
myItem = new Item_2(hei_num, color_num);
break
etc...
}
}
Ruy Adorno
> Hi,
>
> A have a Factory that needs to instanciate Objects with differing
> numbers of
> parameters (1-4). Is there any way to deal with this situation and
> maintain
> strong typing.
>
> private function createItem(param_ob:Object, key:String):Void{
> switch(key){
> case "item_1":
> myItem = new Item_1(param_ob.width, param_ob.y);
> break
> case "item2":
> myItem = new Item_2(param_ob.height, param_ob.color);
> break
> etc...
> }
> }
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