CODEWITHSUNDEEP
actionscript-3apache-flexactionscript
Mr.Chao
Mr.Chao

Reputation: 1

How to create Synchronous Function Flex

I have created a swf project with flex and i have some checkboxes on it and whenever the checkbox seleced it will call the checkbox handler:

function checkBoxHandler() {
   //call resultHandling
   var obj:myObjectType = new myObjectType();
   resultHandling(obj)
}

function resultHandling(myObject:myObjectType) {
   //implementation code to send a request to server side
}

is it possible to make the "resultHandling(...)" to be a synchronized function? So there will be a que whenever we make a call to that function especially when there are multiple function calls

Upvotes: 0

Views: 1069

Answers (3)

artema
artema

Reputation: 131

Most Flash I/O is asynchronous and there is no way to change that. Consider using inline nested handlers

function checkBoxHandler() {
    var obj:myObjectType = new myObjectType();

    var resultHandling:Function = function():void {
        //you can just reference obj here

        var resultHandling2:Function = function():void {
        };
    };

    //implementation code to send a request to server side
}

or use a task scheduler such as the Parsley Command Framework.

Upvotes: 0

Christofer Dutz
Christofer Dutz

Reputation: 2365

As Flex is Flash the limitations to Flash apply to Flex too. One of these is (Actually in newer Flash versions this no longer is 100% valid) that Flash has only one thread. This thread does everything from updating/drawing the ui, processing the application logic, handling IO, etc. Therefore a synchronous call would be a blocking call and in Client-Server communication this block can be quite long. Therefore Flash doesn't support blocking calls to a server and you won't be able to find a solution for this ... unfortunately.

But be assured, actually you will start creating more robust applications this way. I have noticed creating more and more asynchronous solutions even in places I could use synchronous calls :-)

Upvotes: 2

Akash Bhardwaj
Akash Bhardwaj

Reputation: 61

you can create an arraycollection and store all your myObjectType objects in it. Then do something like-

   var arr:ArrayCollection = new ArrayCollection(); 
   function checkBoxHandler() {
   //call resultHandling
   var obj:myObjectType = new myObjectType();
   arr.addItem(obj);
   }

   function resultHandling(myObject:myObjectType) {
   //implementation code to send a request to server side
   }

   function webServiceResponseHandler(){
   //receive the response from server
   sendWSRequest();
   }

   function sendWSRequest(){
       if(arr.length > 0)
       {
           resultHandling(arr.getItemAt(0));
           arr.removeItemAt(0);
       }
   }

Upvotes: 0

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