MACROMEDIA FLASH MEDIA SERVER 2-SERVER MANAGEMENT ACTIONSCRIPT LANGUAGE Manuale Utente Scaricare il pdf (Pagina 29)

ADOBE FLASH MEDIA INTERACTIVE SERVER

Server-Side ActionScript Language Reference

if (redirectURI.charCodeAt(redirectURI.length-1) == 13){

redirectURI = redirectURI.slice(0,(redirectURI.length-1));

}

makeConnection2(redirectURI);

}

init();

application.registerClass()

application.registerClass(className, constructor)

Registers a constructor function that is used when deserializing an object of a certain class type. If the constructor

for a class is not registered, you cannot call the deserialized object’s methods. This method is also used to unregister

the constructor for a class. This is an advanced use of the server and is necessary only when sending ActionScript

objects between a client and a server.

The client and the server communicate over a network connection. Therefore, if you use typed objects, each side

must have the prototype of the same objects they both use. In other words, both the client-side and Server-Side

ActionScript must define and declare the types of data they share so that there is a clear, reciprocal relationship

between an object, method, or property on the client and the corresponding element on the server. You can call

application.registerClass() to register the object’s class type on the server side so that you can use the

methods defined in the class.

Constructor functions should be used to initialize properties and methods; they should not be used for executing

server code. Constructor functions are called automatically when messages are received from the client and need to

be “safe” in case they are executed by a malicious client. You shouldn’t define procedures that could result in negative

situations, such as filling up the hard disk or consuming the processor.

The constructor function is called before the object’s properties are set. A class can define an

onInitialize()

method, which is called after the object has been initialized with all its properties. You can use this method to process

data after an object is deserialized.

If you register a class that has its prototype set to another class, you must set the prototype constructor back to the

original class after setting the prototype. The second example below illustrates this point.

Note: Client-side classes must be defined as

function function_name(){}, as shown in the following examples. If

not defined in the correct way,

application.registerClass() does not identify the class when its instance passes

from the client to the server, and an error is returned.

Availability

Flash Communication Server 1

Parameters

className A string indicating the name of an ActionScript class.

constructor A constructor function used to create an object of a specific class type during object deserialization.

The name of the constructor function must be the same as

className. During object serialization, the name of the

constructor function is serialized as the object’s type. To unregister the class, pass the value

null as the constructor

parameter. Serialization is the process of turning an object into something that you can send to another computer

over the network.

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MACROMEDIA FLASH MEDIA SERVER 2-SERVER MANAGEMENT ACTIONSCRIPT LANGUAGE Manuale Utente Pagina 29

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