Adobe® Flex® 4 Language Reference
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mx.rpc 
AsyncRequest 
Packagemx.rpc
Classpublic class AsyncRequest
InheritanceAsyncRequest Inheritance Producer Inheritance AbstractProducer Inheritance MessageAgent Inheritance EventDispatcher Inheritance Object

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The AsyncRequest class provides an abstraction of messaging for RPC call invocation. An AsyncRequest allows multiple requests to be made on a remote destination and will call back to the responder specified within the request when the remote request is completed.



Public Properties
 PropertyDefined By
 Inheritedauthenticated : Boolean
[read-only] Indicates if this MessageAgent is using an authenticated connection to its destination.
MessageAgent
 InheritedautoConnect : Boolean
If true the Producer automatically connects to its destination the first time the send() method is called.
AbstractProducer
 InheritedchannelSet : ChannelSet
Provides access to the ChannelSet used by the MessageAgent.
MessageAgent
 InheritedclientId : String
[read-only] Provides access to the client id for the MessageAgent.
MessageAgent
 Inheritedconnected : Boolean
[read-only] Indicates whether this MessageAgent is currently connected to its destination via its ChannelSet.
MessageAgent
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
 InheriteddefaultHeaders : Object
The default headers to apply to messages sent by the Producer.
AbstractProducer
 Inheriteddestination : String
Provides access to the destination for the MessageAgent.
MessageAgent
 Inheritedpriority : int
The default message priority for the messages sent by the Producer.
AbstractProducer
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
 InheritedreconnectAttempts : int
The number of reconnect attempts that the Producer makes in the event that the destination is unavailable or the connection to the destination closes.
AbstractProducer
 InheritedreconnectInterval : int
The number of milliseconds between reconnect attempts.
AbstractProducer
 InheritedrequestTimeout : int
Provides access to the request timeout in seconds for sent messages.
MessageAgent
 Inheritedsubtopic : String
Provides access to the subtopic for the remote destination that the MessageAgent uses.
Producer
Public Methods
 MethodDefined By
  
Constructs a new asynchronous request.
AsyncRequest
 Inherited
Invoked by a MessageResponder upon receiving a result for a sent message.
MessageAgent
 Inherited
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener receives notification of an event.
EventDispatcher
 Inherited
Handles a CONNECT ChannelEvent.
MessageAgent
 Inherited
Handles a DISCONNECT ChannelEvent.
MessageAgent
 Inherited
Handles a ChannelFaultEvent.
MessageAgent
 Inherited
Connects the Producer to its target destination.
AbstractProducer
 Inherited
[override] Disconnects the Producer from its remote destination.
AbstractProducer
 Inherited
Dispatches an event into the event flow.
EventDispatcher
 Inherited
Invoked by a MessageResponder upon receiving a fault for a sent message.
MessageAgent
 Inherited
Checks whether the EventDispatcher object has any listeners registered for a specific type of event.
EventDispatcher
 Inherited
Indicates whether an object has a specified property defined.
Object
  
[override] Returns true if there are any pending requests for the passed in message.
AsyncRequest
 Inherited
Called after the implementing object has been created and all properties specified on the tag have been assigned.
MessageAgent
  
invoke(msg:IMessage, responder:IResponder):void
Dispatches the asynchronous request and stores the responder to call later.
AsyncRequest
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Logs the MessageAgent out from its remote destination.
MessageAgent
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void
Removes a listener from the EventDispatcher object.
EventDispatcher
 Inherited
send(message:IMessage):void
Sends the specified message to its destination.
AbstractProducer
 Inherited
setCredentials(username:String, password:String, charset:String = null):void
Sets the credentials that the MessageAgent uses to authenticate to destinations.
MessageAgent
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
setRemoteCredentials(username:String, password:String, charset:String = null):void
Sets the remote credentials that will be passed through to the remote destination for authenticating to secondary systems.
MessageAgent
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
Returns the string representation of the specified object.
Object
 Inherited
Returns the primitive value of the specified object.
Object
 Inherited
Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.
EventDispatcher
Protected Methods
 MethodDefined By
 Inherited
Used to automatically initialize the channelSet property for the MessageAgent before it connects for the first time.
MessageAgent
 Inherited
internalSend(message:IMessage, waitForClientId:Boolean = true):void
Sends a Message from the MessageAgent to its destination using the agent's ChannelSet.
MessageAgent
 Inherited
This function should be overriden by sublasses to implement re-authorization due to server session time-out behavior specific to them.
MessageAgent
Events
 Event Summary Defined By
 InheritedDispatched when an acknowledge message is received for a sent message.MessageAgent
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.EventDispatcher
 InheritedDispatched when the underlying Channel the MessageAgent is using connects.MessageAgent
 InheritedDispatched when the underlying Channel the MessageAgent is using disconnects.MessageAgent
 InheritedDispatched when the underlying Channel the MessageAgent is using faults.MessageAgent
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.EventDispatcher
 InheritedDispatched when a message fault occurs.MessageAgent
 InheritedDispatched when the connected property of the MessageAgent changes.MessageAgent
Public Constants
 ConstantDefined By
 InheritedDEFAULT_PRIORITY : int = 4
[static] The default message priority.
Producer
Constructor Detail

AsyncRequest

()Constructor
public function AsyncRequest()

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Constructs a new asynchronous request.

Method Detail

hasPendingRequestForMessage

()method
override public function hasPendingRequestForMessage(msg:IMessage):Boolean

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Returns true if there are any pending requests for the passed in message.

Parameters

msg:IMessage — The message for which the existence of pending requests is checked.

Returns
Boolean — Returns true if there are any pending requests for the passed in message; otherwise, returns false.

invoke

()method 
public function invoke(msg:IMessage, responder:IResponder):void

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Dispatches the asynchronous request and stores the responder to call later.

Parameters

msg:IMessage — The message to be sent asynchronously.
 
responder:IResponder — The responder to be called later.