| window.runtime property | window.runtime.flash.net.ObjectEncoding |
| Runtime Versions: | 1.0 |
Object encoding controls how objects are represented in Action Message Format (AMF). Flash Player uses AMF to enable efficient communication between an application and a remote server. AMF encodes remote procedure calls into a compact binary representation that can be transferred over HTTP/HTTPS or the RTMP/RTMPS protocol used by Flash Media Server. Objects and data values are serialized into this binary format, which is generally more compact than other representations, such as XML.
Adobe AIR and Flash Player 9 can serialize in two different formats: AMF3 and AMF0. AMF3, the default serialization developed for ActionScript 3.0, provides various advantages over AMF0, which is used for ActionScript 1.0 and 2.0. AMF3 sends data over the network more efficiently than AMF0.
The ByteArray, FileStream, NetConnection, NetStream,
Socket, and URLStream classes contain an objectEncoding property that is assigned
a constant from the ObjectEncoding class.
The behavior of the objectEncoding property differs depending
on the object; each class's objectEncoding property
description explains the behavior more thoroughly.
| Property | Defined By | ||
|---|---|---|---|
| dynamicPropertyWriter : IDynamicPropertyWriter [static]
Allows greater control over the serialization of dynamic properties of dynamic objects. | ObjectEncoding | ||
| Constant | Defined By | ||
|---|---|---|---|
| AMF0 : uint = 0 [static]
Specifies that objects are serialized using the Action Message Format for ActionScript 1.0 and 2.0. | ObjectEncoding | ||
| AMF3 : uint = 3 [static]
Specifies that objects are serialized using the Action Message Format for ActionScript 3.0. | ObjectEncoding | ||
| DEFAULT : uint = 3 [static]
Specifies the default (latest) format for the current runtime (either Flash®
Player or Adobe® AIR®). | ObjectEncoding | ||
| dynamicPropertyWriter | property |
dynamicPropertyWriter:IDynamicPropertyWriter| Runtime Versions: | 1.0 |
Allows greater control over the serialization of dynamic properties of dynamic objects.
When this property is set to null,
the default value, dynamic properties are serialized using native code, which writes
all dynamic properties excluding those whose value is a function.
This value is called only for properties of a dynamic object (objects declared
within a dynamic class) or for objects declared using the
new operator.
| AMF0 | Constant |
static const AMF0:uint = 0| Runtime Versions: | 1.0 |
Specifies that objects are serialized using the Action Message Format for ActionScript 1.0 and 2.0.
| AMF3 | Constant |
static const AMF3:uint = 3| Runtime Versions: | 1.0 |
Specifies that objects are serialized using the Action Message Format for ActionScript 3.0.
| DEFAULT | Constant |
static const DEFAULT:uint = 3| Runtime Versions: | 1.0 |
Specifies the default (latest) format for the current runtime (either Flash® Player or Adobe® AIR®). Because object encoding control is only available in Flash Player 9 and later and Adobe AIR, the earliest format used will be the Action Message Format for ActionScript 3.0.
For example, if an object has the objectEncoding property set to
ObjectEncoding.DEFAULT, AMF3 encoding is used.
If, in the future, a later version of Flash Player or Adobe AIR introduces a new AMF version
and you republish your content, the application will use that new AMF version.
You can use this constant only if you're not concerned at all about interoperability
with previous versions.
