| Paquete | mx.messaging |
| Clase | public class MultiTopicConsumer |
| Herencia | MultiTopicConsumer  AbstractConsumer MessageAgent EventDispatcher Object |
| Versión del lenguaje: | ActionScript 3.0 |
| Versiones de producto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Like the regular Consumer, the MultiTopicConsumer sends subscribe and unsubscribe messages which generate a MessageAckEvent or MessageFaultEvent depending upon whether the operation was successful or not. Once subscribed, a MultiTopicConsumer dispatches a MessageEvent for each message it receives.
Sintaxis MXML
Mostrar sintaxis MXML
Ocultar sintaxis MXMLThe <mx:MultiTopicConsumer> tag has these properties:
<mx:Consumer
Properties
subscriptions=""an empty ArrayCollection of SubscriptionInfo objects"
resubscribeAttempts="5"
resubscribeInterval="5000"
timestamp="No default."
/>
| Propiedad | Definido por | ||
|---|---|---|---|
 | authenticated : Boolean [solo lectura]
Indicates if this MessageAgent is using an authenticated connection to
its destination. | MessageAgent | |
| channelSet : ChannelSet
Provides access to the ChannelSet used by the MessageAgent. | MessageAgent | |
| clientId : String [solo lectura]
Provides access to the client id for the MessageAgent. | MessageAgent | |
| connected : Boolean [solo lectura]
Indicates whether this MessageAgent is currently connected to its
destination via its ChannelSet. | MessageAgent | |
| constructor : Object
Una referencia a la clase de objeto o función constructora para una instancia de objeto determinada. | Object | |
| destination : String
Provides access to the destination for the MessageAgent. | MessageAgent | |
| maxFrequency : uint
Determines the maximum number of messages per second the Consumer wants
to receive. | AbstractConsumer | |
| requestTimeout : int
Provides access to the request timeout in seconds for sent messages. | MessageAgent | |
| resubscribeAttempts : int
The number of resubscribe attempts that the Consumer makes in the event
that the destination is unavailable or the connection to the destination fails. | AbstractConsumer | |
| resubscribeInterval : int
The number of milliseconds between resubscribe attempts. | AbstractConsumer | |
| subscribed : Boolean [solo lectura]
Indicates whether the Consumer is currently subscribed. | AbstractConsumer | |
| subscriptions : ArrayCollection
Stores an Array of SubscriptionInfo objects. | MultiTopicConsumer | ||
| timestamp : Number
Contains the timestamp of the most recent message this Consumer
has received. | AbstractConsumer | |
| Método | Definido por | ||
|---|---|---|---|
Constructor. | MultiTopicConsumer | ||
|
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
Registra un objeto de detector de eventos con un objeto EventDispatcher, de modo que el detector reciba la notificación de un evento. | EventDispatcher | |
This is a convenience method for adding a new subscription. | MultiTopicConsumer | ||
|
Handles a CONNECT ChannelEvent. | MessageAgent | |
|
Handles a DISCONNECT ChannelEvent. | MessageAgent | |
|
Handles a ChannelFaultEvent. | MessageAgent | |
| [override]
Disconnects the Consumer from its remote destination. | AbstractConsumer | |
|
Distribuye un evento en el flujo del evento. | EventDispatcher | |
|
Invoked by a MessageResponder upon receiving a fault for a sent message. | MessageAgent | |
|
Comprueba si el objeto EventDispatcher tiene detectores registrados para un tipo concreto de evento. | EventDispatcher | |
|
Indica si un objeto tiene definida una propiedad especificada. | Object | |
|
Returns true if there are any pending requests for the passed in message. | MessageAgent | |
|
Called after the implementing object has been created
and all properties specified on the tag have been assigned. | MessageAgent | |
|
Indica si hay una instancia de la clase Object en la cadena de prototipo del objeto especificado como parámetro. | Object | |
|
Logs the MessageAgent out from its remote destination. | MessageAgent | |
|
Indica si existe la propiedad especificada y si es enumerable. | Object | |
|
Requests any messages that are queued for this Consumer on the server. | AbstractConsumer | |
|
Elimina un detector del objeto EventDispatcher. | EventDispatcher | |
This method removes the subscription specified by the subtopic
and selector. | MultiTopicConsumer | ||
|
Sets the credentials that the MessageAgent uses to authenticate to
destinations. | MessageAgent | |
|
Establece la disponibilidad de una propiedad dinámica para operaciones de bucle. | Object | |
|
Sets the remote credentials that will be passed through to the remote destination
for authenticating to secondary systems. | MessageAgent | |
|
Subscribes to the remote destination. | AbstractConsumer | |
|
Devuelve la representación de cadena de este objeto, con formato según las convenciones específicas de configuración regional. | Object | |
|
Devuelve la representación de cadena del objeto especificado. | Object | |
|
Unsubscribes from the remote destination. | AbstractConsumer | |
|
Devuelve el valor simple del objeto especificado. | Object | |
|
Comprueba si hay registrado un detector de eventos con este objeto EventDispatcher o con cualquiera de sus ascendientes para el tipo de evento concreto. | EventDispatcher | |
| Método | Definido por | ||
|---|---|---|---|
[override]
Returns a subscribe message. | MultiTopicConsumer | ||
[override]
Returns an unsubscribe mesage. | MultiTopicConsumer | ||
|
Handles the authentication fault on the server. | MessageAgent | |
|
Used to automatically initialize the channelSet property for the
MessageAgent before it connects for the first time. | MessageAgent | |
|
Sends a Message from the MessageAgent to its destination using the
agent's ChannelSet. | MessageAgent | |
|
This function should be overriden by sublasses to implement reauthentication due to
server session time-out behavior specific to them. | MessageAgent | |
| Evento | Resumen | Definido por | ||
|---|---|---|---|---|
| Dispatched when an acknowledge message is received for a sent message. | MessageAgent | ||
| [evento broadcast] Se distribuye cuando Flash Player o AIR pasan a estar activos. | EventDispatcher | ||
| Dispatched when the underlying Channel the MessageAgent is using connects. | MessageAgent | ||
| Dispatched when the underlying Channel the MessageAgent is using disconnects. | MessageAgent | ||
| Dispatched when the underlying Channel the MessageAgent is using faults. | MessageAgent | ||
| [evento broadcast] Se distribuye cuando Flash Player o de AIR pasan a estar inactivos. | EventDispatcher | ||
| Dispatched when a message fault occurs. | MessageAgent | ||
| Dispatched when a message is received by the Consumer. | MultiTopicConsumer | |||
| Dispatched when the connected property of the MessageAgent changes. | MessageAgent | ||
subscriptions | propiedad |
subscriptions:ArrayCollection| Versión del lenguaje: | ActionScript 3.0 |
| Versiones de producto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Stores an Array of SubscriptionInfo objects. Each subscription contains a subtopic and a selector each of which can be null. A subscription with a non-null subtopic restricts the subscription to messages delivered with only that subtopic. If a subtopic is null, it uses the selector with no subtopic. If the selector and the subtopic is null, the subscription receives any messages targeted at the destination with no subtopic. The subtopic can contain a wildcard specification.
Before a call to the subscribe() method, this property
can be set with no side effects.
After the MultiTopicConsumer has subscribed to its destination, changing this
value has the side effect of updating the MultiTopicConsumer's subscription to
include any new subscriptions and remove any subscriptions you deleted from
the ArrayCollection.
The remote destination must understand the value of the selector expression.
Esta propiedad se puede utilizar como origen para la vinculación de datos. Cuando se modifica esta propiedad, distribuye el evento propertyChange .
Implementación
public function get subscriptions():ArrayCollection public function set subscriptions(value:ArrayCollection):voidMultiTopicConsumer | () | Información sobre |
public function MultiTopicConsumer()| Versión del lenguaje: | ActionScript 3.0 |
| Versiones de producto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Constructor.
Ejemplo ( Cómo utilizar este ejemplo )
function initConsumer():void
{
var consumer:Consumer = new MultiTopicConsumer();
consumer.destination = "NASDAQ";
consumer.addEventListener(MessageEvent.MESSAGE, messageHandler);
consumer.addSubscription("myStock1", "operation IN ('BID', 'Ask')");
consumer.addSubscription("myStock2", "operation IN ('BID', 'Ask')");
consumer.subscribe();
}
function messageHandler(event:MessageEvent):void
{
var msg:IMessage = event.message;
var info:Object = msg.body;
trace("-App recieved message: " + msg.toString());
}
addSubscription | () | método |
public function addSubscription(subtopic:String = null, selector:String = null, maxFrequency:uint = 0):void| Versión del lenguaje: | ActionScript 3.0 |
| Versiones de producto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
This is a convenience method for adding a new subscription. It just creates a new SubscriptionInfo object and adds it to the subscriptions property. To call this method, you provide the subtopic and selector string for the new subscription. If the subtopic is null, the subscription applies to messages which do not have a subtopic set in the producer. If the selector string is null, all messages sent which match the subtopic string are received by this consumer.
Parámetros
subtopic:String (default = null) | |
selector:String (default = null) | |
maxFrequency:uint (default = 0) |
buildSubscribeMessage | () | método |
override protected function buildSubscribeMessage():CommandMessage| Versión del lenguaje: | ActionScript 3.0 |
| Versiones de producto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Returns a subscribe message.
Valor devueltoCommandMessage — The subscribe CommandMessage.
|
buildUnsubscribeMessage | () | método |
override protected function buildUnsubscribeMessage(preserveDurable:Boolean):CommandMessage| Versión del lenguaje: | ActionScript 3.0 |
| Versiones de producto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Returns an unsubscribe mesage.
Parámetros
preserveDurable:Boolean — When true, durable JMS subscriptions are
not destroyed, allowing consumers to later resubscribe and
receive missed messages.
|
CommandMessage — The unsubscribe CommandMessage.
|
removeSubscription | () | método |
public function removeSubscription(subtopic:String = null, selector:String = null):void| Versión del lenguaje: | ActionScript 3.0 |
| Versiones de producto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
This method removes the subscription specified by the subtopic and selector.
Parámetros
subtopic:String (default = null) | |
selector:String (default = null) |
message | Evento |
mx.messaging.events.MessageEventpropiedad MessageEvent.type =
mx.messaging.events.MessageEvent.MESSAGE| Versión del lenguaje: | ActionScript 3.0 |
| Versiones de producto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versiones de motor de ejecución: | Flash Player 9, AIR 1.1 |
Dispatched when a message is received by the Consumer.
The MESSAGE event type; dispatched upon receipt of a message.The value of this constant is "message".
The properties of the event object have the following values:
| Property | Value |
|---|---|
bubbles | false |
cancelable | false |
currentTarget | The Object that defines the
event listener that handles the event. For example, if you use
myButton.addEventListener() to register an event listener,
myButton is the value of the currentTarget. |
message | The message associated with this event. |
target | The Object that dispatched the event;
it is not always the Object listening for the event.
Use the currentTarget property to always access the
Object listening for the event. |
Tue Jun 12 2018, 02:12 PM Z