SWX: SWF Data Format

Ideally, you should not have to manually create movie clips and work with low-level native constructs like loadMovie() when working with SWX RPC on a daily basis. The SWX ActionScript Library gives you an abstract, high-level interface for working with SWX RPC.

To use this high-level interface, you need to instantiate the SWX class.

Modify the code listing so that it matches the one below:

import org.swxformat.SWX;
 
var swx:SWX = new SWX();
swx.gateway = "http://localhost:8888/php/swx.php";
swx.encoding = "GET";
swx.debug = true;
 
var callParameters:Object =
{
    serviceClass: "Calculator",
    method: "addNumbers",
    args: [35, 7],
    result: [this, resultHandler]
}
 
swx.call(callParameters);
 
function resultHandler(event:Object)
{
    status.text = event.result;
}

When you run the above example, you should again see 42 in the status text field. Let's look at what has changed.

The biggest change is that you are actually instantiating the SWX class and setting certain properties there (such as the gateway URL, encoding method and whether you want debug information for calls).

Instead of putting call-related parameters directly into a movie clip (you can delete the dataHolder movie clip now as you aren't using it any more), you create a callParameters object and specify the serviceClass, method, and args properties there. But you can do more, you can also specify a result handler that will get called once the data has loaded.

The result handler receives an event object as an argument. That event object has a result property that points to the loaded data.