mx.rpc.AsyncRequest - Adobe® Flex® 4 Language Reference (Flex 4)

Package	mx.rpc
Class	public class AsyncRequest
Inheritance	AsyncRequest Producer AbstractProducer MessageAgent EventDispatcher 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

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	Property		Defined By
		authenticated : Boolean [read-only] Indicates if this MessageAgent is using an authenticated connection to its destination.	MessageAgent
		autoConnect : Boolean If true the Producer automatically connects to its destination the first time the send() method is called.	AbstractProducer
		channelSet : ChannelSet Provides access to the ChannelSet used by the MessageAgent.	MessageAgent
		clientId : String [read-only] Provides access to the client id for the MessageAgent.	MessageAgent
		connected : Boolean [read-only] Indicates whether this MessageAgent is currently connected to its destination via its ChannelSet.	MessageAgent
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		defaultHeaders : Object The default headers to apply to messages sent by the Producer.	AbstractProducer
		destination : String Provides access to the destination for the MessageAgent.	MessageAgent
		priority : int The default message priority for the messages sent by the Producer.	AbstractProducer
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object
		reconnectAttempts : 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
		reconnectInterval : int The number of milliseconds between reconnect attempts.	AbstractProducer
		requestTimeout : int Provides access to the request timeout in seconds for sent messages.	MessageAgent
		subtopic : String Provides access to the subtopic for the remote destination that the MessageAgent uses.	Producer

Public Methods

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	Method		Defined By
		AsyncRequest() Constructs a new asynchronous request.	AsyncRequest
		acknowledge(ackMsg:AcknowledgeMessage, msg:IMessage):void Invoked by a MessageResponder upon receiving a result for a sent message.	MessageAgent
		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
		channelConnectHandler(event:ChannelEvent):void Handles a CONNECT ChannelEvent.	MessageAgent
		channelDisconnectHandler(event:ChannelEvent):void Handles a DISCONNECT ChannelEvent.	MessageAgent
		channelFaultHandler(event:ChannelFaultEvent):void Handles a ChannelFaultEvent.	MessageAgent
		connect():void Connects the Producer to its target destination.	AbstractProducer
		disconnect():void [override] Disconnects the Producer from its remote destination.	AbstractProducer
		dispatchEvent(event:Event):Boolean Dispatches an event into the event flow.	EventDispatcher
		fault(errMsg:ErrorMessage, msg:IMessage):void Invoked by a MessageResponder upon receiving a fault for a sent message.	MessageAgent
		hasEventListener(type:String):Boolean Checks whether the EventDispatcher object has any listeners registered for a specific type of event.	EventDispatcher
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		hasPendingRequestForMessage(msg:IMessage):Boolean [override] Returns true if there are any pending requests for the passed in message.	AsyncRequest
		initialized(document:Object, id:String):void 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
		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
		logout():void Logs the MessageAgent out from its remote destination.	MessageAgent
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Removes a listener from the EventDispatcher object.	EventDispatcher
		send(message:IMessage):void Sends the specified message to its destination.	AbstractProducer
		setCredentials(username:String, password:String, charset:String = null):void Sets the credentials that the MessageAgent uses to authenticate to destinations.	MessageAgent
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		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
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object
		willTrigger(type:String):Boolean Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.	EventDispatcher

Protected Methods

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	Method		Defined By
		initChannelSet(message:IMessage):void Used to automatically initialize the channelSet property for the MessageAgent before it connects for the first time.	MessageAgent
		internalSend(message:IMessage, waitForClientId:Boolean = true):void Sends a Message from the MessageAgent to its destination using the agent's ChannelSet.	MessageAgent
		reAuthorize(msg:IMessage):void This function should be overriden by sublasses to implement re-authorization due to server session time-out behavior specific to them.	MessageAgent

Events

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	Summary	Defined By
acknowledge	Dispatched when an acknowledge message is received for a sent message.	MessageAgent
activate	[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.	EventDispatcher
channelConnect	Dispatched when the underlying Channel the MessageAgent is using connects.	MessageAgent
channelDisconnect	Dispatched when the underlying Channel the MessageAgent is using disconnects.	MessageAgent
channelFault	Dispatched when the underlying Channel the MessageAgent is using faults.	MessageAgent
deactivate	[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.	EventDispatcher
fault	Dispatched when a message fault occurs.	MessageAgent
propertyChange	Dispatched when the connected property of the MessageAgent changes.	MessageAgent

Public Constants

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	Constant		Defined By
		DEFAULT_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.