Create generic HTTPService class

Question

I am trying to create a generic HTTPService class. I am using
this code as my starting point:
import mx.controls.Alert;
import mx.rpc.http.HTTPService;
import mx.rpc.events.ResultEvent;
import mx.rpc.events.FaultEvent;
private var service:HTTPService
public function useHttpService(parameters:Object):void {
service = new HTTPService();
service.destination = "sampleDestination";
service.method = "POST";
service.addEventListener("result", httpResult);
service.addEventListener("fault", httpFault);
service.send(parameters);
public function httpResult(event:ResultEvent):void {
var result:Object = event.result;
//Do something with the result.
?? How to run my function here if I dont know a name of it
public function httpFault(event:FaultEvent):void {
var faultstring:String = event.fault.faultString;
Alert.show(faultstring);
httpResult should be able to fire different functions that a
service requester will provide. How can I send a function name or
something else for the httpResult to fire when data has arrived?
Thanks

Answer 1

There are several options. First look into the AsyncToken. It
allows you to associate a dynamic "token" object with a given
request and result. properties of this object can be almos anyting,
including strings, if you want to use a switch statement to direct
the results to the desited handler, and even functions, if you want
to specify a callback function.
Additionally, bracket notation will resolve a function name
expressed as a string, and let you call that. So if you pass in a
reference to the scope of the handler, say "caller", and the
calling component has a public function processResult(), and you
pass the name of that function in via a var, say "handlerFunc",
then from wiithin your HTTP component you can do:
caller[handlerFunc](whatever)
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