mx.messaging.Producer (Flex™ 2 Language Reference)

(Adobe^® Flex™ Data Services 2 only)

Package	mx.messaging
Class	public class Producer
Inheritance	Producer MessageAgent EventDispatcher Object
Subclasses	AsyncRequest

A Producer sends messages to a destination. Producers dispatch a MessageAckEvent or MessageFaultEvent for each message they send depending upon whether the outbound message was sent and processed successfully or not.

MXML Syntax expanded

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The <mx:Producer> tag inherits all the tag attributes of its superclass, and adds the following tag attributes:

   <mx:Producer
    Properties
    defaultHeaders="No default."
  />

Public Properties

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	Property		Defined by
		channelSet : ChannelSet Provides access to the ChannelSet used by the MessageAgent.	MessageAgent
		clientId : String Provides access to the client id for the MessageAgent.	MessageAgent
		connected : Boolean 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.	Producer
		destination : String Provides access to the destination for the MessageAgent.	MessageAgent
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object
		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.	MessageAgent

Public Methods

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	Method		Defined by
		Producer() Constructs a Producer.	Producer
		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
		disconnect():void Disconnects the MessageAgent's network connection.	MessageAgent
		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
		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
		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.	Producer
		setCredentials(username:String, password:String):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):void Sets the remote credentials that will be passed through to the remote destination for authenticating to secondary systems.	MessageAgent
		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):void Sends a Message from the MessageAgent to its destination using the agent's ChannelSet.	MessageAgent

Events

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	Summary	Defined by
acknowledge	Dispatched when an acknowledge message is received for a sent message.	MessageAgent
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
fault	Dispatched when a message fault occurs.	MessageAgent
propertyChange	Dispatched when the `connected` property of the MessageAgent changes.	MessageAgent

Property detail

defaultHeaders

property

defaultHeaders:Object [read-write]

The default headers to apply to messages sent by the Producer. Any default headers that do not exist in the message will be created. If the message already contains a matching header, the value in the message takes precedence and the default header value is ignored.

Implementation
public function get defaultHeaders():Object
public function set defaultHeaders(value:Object):void

Constructor detail

Producer

()

constructor

public function Producer()

Constructs a Producer.

Example

       function sendMessage():void
       {
           var producer:Producer = new Producer();
           producer.destination = "NASDAQ";
           var msg:AsyncMessage = new AsyncMessage();
           msg.headers.operation = "UPDATE";
           msg.body = {"SYMBOL":50.00};
           producer.send(msg);
       }

Method detail

send

()

method

public function send(message:IMessage):void

Sends the specified message to its destination. If the producer is being used for publish/subscribe messaging, only messages of type AsyncMessage should be sent unless a custom message type is being used and the message destination on the server has been configured to process the custom message type.

Parameters

message:IMessage — The Message to send.

Throws

InvalidDestinationError — If no destination is set.

Example

         var producer:Producer = new Producer();
         producer.destination = "TestTopic";
         var msg:AsyncMessage = new AsyncMessage();
         msg.body = "test message";
         producer.send(msg);

Current page: http://livedocs.adobe.com/flex/2/langref/mx/messaging/Producer.html

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