flash.net.ObjectEncoding (Flex 3)

Pacote	flash.net
Classe	public final class ObjectEncoding
Herança	ObjectEncoding Object

The ObjectEncoding class allows classes that serialize objects (such as FileStream, NetStream, NetConnection, SharedObject, and ByteArray) to work with prior versions of ActionScript.

Object encoding controls how objects are represented in Action Message Format (AMF). The Adobe Integrated Runtime and 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.

The Adobe Integrated Runtime 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. AMF3 supports sending int and uint objects as integers and supports data types that are available only in ActionScript 3.0, such as ByteArray, XML, and IExternalizable. It is available only in ActionScript 3.0 and with servers that use AMF3 encoding, such as Flex 2.

The ByteArray, FileStream, NetConnection, NetStream, SharedObject, 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.

	Propriedade	Definido por
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		dynamicPropertyWriter : IDynamicPropertyWriter [static] Allows greater control over the serialization of dynamic properties of dynamic objects.	ObjectEncoding
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object

Métodos Públicos

Esconder Métodos Públicos Herdados

Exibir Métodos Públicos Herdados

	Método		Definido por
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object

	Constante	Definido por
		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 player.	ObjectEncoding

Detalhes da propriedade

dynamicPropertyWriter

propriedade

dynamicPropertyWriter:IDynamicPropertyWriter [read-write]

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.

You can use this property to exclude properties of dynamic objects from serialization; to write values to properties of dynamic objects; or to create new properties for dynamic objects. To do so, set this property to an object that implements the IDynamicPropertyWriter interface. For more information, see the IDynamicPropertyWriter interface.

Implementação
public static function get dynamicPropertyWriter():IDynamicPropertyWriter
public function set dynamicPropertyWriter(value:IDynamicPropertyWriter):void

Veja também

IDynamicPropertyWriter

Detalhes da constante

AMF0

Constante

public static const AMF0:uint = 0

Specifies that objects are serialized using the Action Message Format for ActionScript 1.0 and 2.0.

AMF3

Constante

public static const AMF3:uint = 3

Specifies that objects are serialized using the Action Message Format for ActionScript 3.0.

DEFAULT

Constante

public static const DEFAULT:uint = 3

Specifies the default (latest) format for the current player. Because object encoding control is only available in Flash^® Player 9 and later and the Adobe^® Integrated Runtime (AIR™), the earliest format used will be the Action Message Format for ActionScript 3.0.

For exemplo, 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 the Adobe Integrated Runtime introduces a new AMF version and you republish your content, the player will use that new AMF version. You can use this constant only if you're not concerned at all about interoperability with previous versions.

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