| Pacote | mx.messaging |
| Classe | public class MultiTopicConsumer |
| Herança | MultiTopicConsumer  AbstractConsumer MessageAgent EventDispatcher Object |
| Versão da linguagem: | ActionScript 3.0 |
| Versões de produto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versões de runtime: | 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.
Sintaxe MXML
Mostrar sintaxe MXML
Ocultar sintaxe MXMLThe <mx:MultiTopicConsumer> tag has these properties:
<mx:Consumer
Properties
subscriptions=""an empty ArrayCollection of SubscriptionInfo objects"
resubscribeAttempts="5"
resubscribeInterval="5000"
timestamp="No default."
/>
| Propriedade | Definido por | ||
|---|---|---|---|
 | authenticated : Boolean [somente leitura]
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 [somente leitura]
Provides access to the client id for the MessageAgent. | MessageAgent | |
| connected : Boolean [somente leitura]
Indicates whether this MessageAgent is currently connected to its
destination via its ChannelSet. | MessageAgent | |
| constructor : Object
Uma referência ao objeto de classe ou à função de construtor de uma determinada ocorrência de objeto. | 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 [somente leitura]
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 um objeto de ouvinte de evento em um objeto EventDispatcher, de forma que o ouvinte receba a notificação de um 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 | |
| [substituir]
Disconnects the Consumer from its remote destination. | AbstractConsumer | |
|
Envia um evento para o fluxo de eventos. | EventDispatcher | |
|
Invoked by a MessageResponder upon receiving a fault for a sent message. | MessageAgent | |
|
Verifica se o objeto EventDispatcher tem ouvintes registrados para um tipo específico de evento. | EventDispatcher | |
|
Indica se um objeto tem uma propriedade especificada definida. | 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 se uma ocorrência da classe Object está na cadeia de protótipos do objeto especificado como o parâmetro. | Object | |
|
Logs the MessageAgent out from its remote destination. | MessageAgent | |
|
Indica se a propriedade especificada existe e é enumerável. | Object | |
|
Requests any messages that are queued for this Consumer on the server. | AbstractConsumer | |
|
Remove um ouvinte do 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 | |
|
Define a disponibilidade de uma propriedade dinâmica para operações de repetição. | 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 | |
|
Retorna a representação da string deste objeto, formatado segundo as convenções específicas para a localidade. | Object | |
|
Retorna a representação de string do objeto especificado. | Object | |
|
Unsubscribes from the remote destination. | AbstractConsumer | |
|
Retorna o valor primitivo do objeto especificado. | Object | |
|
Verifica se um ouvinte de evento está registrado nesse objeto EventDispatcher ou em qualquer um de seus ancestrais para o tipo de evento especificado. | EventDispatcher | |
| Método | Definido por | ||
|---|---|---|---|
[substituir]
Returns a subscribe message. | MultiTopicConsumer | ||
[substituir]
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 | Resumo | Definido por | ||
|---|---|---|---|---|
| Dispatched when an acknowledge message is received for a sent message. | MessageAgent | ||
| [transmissão de evento] Despachado quando o Flash Player ou o aplicativo do AIR ganha o foco do sistema operacional e está se tornando inativo. | 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 | ||
| [transmissão de evento] Despachado quando o Flash Player ou o aplicativo do AIR perde o foco do sistema operacional e está se tornando inativo. | 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 | propriedade |
subscriptions:ArrayCollection| Versão da linguagem: | ActionScript 3.0 |
| Versões de produto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versões de runtime: | 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.
Essa propriedade pode ser usada como a origem para o vínculo de dados. Quando essa propriedade é modificada, ela despacha o evento propertyChange .
Implementação
public function get subscriptions():ArrayCollection public function set subscriptions(value:ArrayCollection):voidMultiTopicConsumer | () | Construtor |
public function MultiTopicConsumer()| Versão da linguagem: | ActionScript 3.0 |
| Versões de produto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versões de runtime: | Flash Player 9, AIR 1.1 |
Constructor.
Exemplo ( Como usar este exemplo )
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| Versão da linguagem: | ActionScript 3.0 |
| Versões de produto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versões de runtime: | 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.
Parâmetros
subtopic:String (default = null) | |
selector:String (default = null) | |
maxFrequency:uint (default = 0) |
buildSubscribeMessage | () | método |
override protected function buildSubscribeMessage():CommandMessage| Versão da linguagem: | ActionScript 3.0 |
| Versões de produto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versões de runtime: | Flash Player 9, AIR 1.1 |
Returns a subscribe message.
RetornaCommandMessage — The subscribe CommandMessage.
|
buildUnsubscribeMessage | () | método |
override protected function buildUnsubscribeMessage(preserveDurable:Boolean):CommandMessage| Versão da linguagem: | ActionScript 3.0 |
| Versões de produto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versões de runtime: | Flash Player 9, AIR 1.1 |
Returns an unsubscribe mesage.
Parâmetros
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| Versão da linguagem: | ActionScript 3.0 |
| Versões de produto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versões de runtime: | Flash Player 9, AIR 1.1 |
This method removes the subscription specified by the subtopic and selector.
Parâmetros
subtopic:String (default = null) | |
selector:String (default = null) |
message | Evento |
mx.messaging.events.MessageEventpropriedade MessageEvent.type =
mx.messaging.events.MessageEvent.MESSAGE| Versão da linguagem: | ActionScript 3.0 |
| Versões de produto: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Versões de runtime: | 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. |
Wed Jun 13 2018, 11:10 AM Z