Flash Remoting: The Definitive Guide

Creating Responder Functions

You’ve seen different ways of creating a responder function for a remote service call. There are two broad categories of responder functions:

• The responder functions can be methods named onResult( ) and onStatus( ) (or, more accurately, they are functions assigned to the onResult and onStatus properties of a responder object).

• Responder functions can also be named functions, in which case the function name must match the name of the remote method followed by _Result or _Status, such as methodname _ Result( ) and methodname _ Status( ). This approach is used in some of the Macromedia documentation and in Example 3-8.

Now that you understand the basics, here is the twist. A responder object can be passed to getService( ), in which case the same responder object is used for all future method invocations on that service. Alternatively, a responder object can be passed separately each time a method is invoked on the service, in which case a responder object should not be passed in the initial call to getService( ).

Using onResult( ) and onStatus( ) Responder Functions

Let’s first look at passing a responder object to getService( ). Recall the syntax for calling the getService( ) method, where myConnection_conn is a NetConnection object returned by an earlier call to createGatewayConnection( ):

myService = myConnection_conn.getService(serviceName[, responderObject]);

The first parameter, serviceName, is a service name such as com.oreilly.frdg.HelloWorld. The ...