Brian Riley
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brianr@webappsolution.com
AIM/GIM/MSN/YIM/Twitter/Skype: wasibrianr

Tim McGee
508-566-6711
tim@webappsolution.com
AIM/GIM/YIM/MSN cheftimbob
Skype wasitim

Joe Seiter
201.981.2347
joes@webappsolution.com
YIM: seiter
AIM/GIM/Skype: wasijoes

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One of the things you have to keep in mind though is that since the class is dynamic, the compiler can’t provide the linkage for you to do something like:

var someValue:SomeClass = someObject as SomeDynamicClass;

The compiler won’t complain, but, you will as you scratch your head trying to understand why someValue == null all the time. The lack of information at compile time is the obvious culprit.

But, I have found a decent workaround. Provide a constructor for the dynamic class that takes and Object as an optional parameter. If you pass in a parameter, call the helper function to populate the object. Here I’m using a form of reflection to do this dynamically so I don’t have to hand write all the properties.

dynamic public class SomeDynamicClass

public function SomeDynamicClass(obj:Object=null)
{
if ( obj )
this.populateMe(obj);
}

private function populateMe(source:Object):void
{

var destinationList:XML = describeType(this);

for each ( var propName:XML in destinationList..variable )
{
if ( source.hasOwnProperty( propName.@name ) )
{
var cls:Class = getDefinitionByName(propName.@type) as Class;
this[propName.@name] = source[propName.@name] as cls;
}
}
}

Later on, when you get some generic Object, like from ArrayCollection.getItem, you don’t do the normal cast but instead create a new instance passing in the Object.

var someValue:SomeClass = new SomeDynamicClass(someObject);

Hope that helps.

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See you there!

…from Ted’s Blog

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1195 Attempted access of inaccessible method <methodName> through a reference with static type <fullQualifiedClass>.

…maybe you did what I did and changed a public function to a public set function, but forgot to change the implementation where you used it…so my interface was originally:

public function bar(str:String):void;

and then I changed the bar method to a setter method like this:

public function set bar(str:String):void;

so I also needed to change my implementation of that method from:

foo.bar("str");

to

foo.bar = "str";

…a simple mistake that led me to a slightly convoluted error that I hope helps someone else.

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