| Paket | mx.messaging |
| Klass | public class MultiTopicConsumer |
| Arv | MultiTopicConsumer  AbstractConsumer MessageAgent EventDispatcher Object |
| Språkversion: | ActionScript 3.0 |
| Produktversioner: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Körningsmiljöversioner: | 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.
MXML-syntax
Visa MXML-syntax
Dölj MXML-syntaxThe <mx:MultiTopicConsumer> tag has these properties:
<mx:Consumer
Properties
subscriptions=""an empty ArrayCollection of SubscriptionInfo objects"
resubscribeAttempts="5"
resubscribeInterval="5000"
timestamp="No default."
/>
| Egenskap | Definieras med | ||
|---|---|---|---|
 | authenticated : Boolean [skrivskyddad]
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 [skrivskyddad]
Provides access to the client id for the MessageAgent. | MessageAgent | |
| connected : Boolean [skrivskyddad]
Indicates whether this MessageAgent is currently connected to its
destination via its ChannelSet. | MessageAgent | |
| constructor : Object
En referens till klassobjektet eller konstruktorfunktionen för en given objektinstans. | 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 [skrivskyddad]
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 | |
| Metod | Definieras med | ||
|---|---|---|---|
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
Registrerar ett händelseavlyssnarobjekt för ett EventDispatcher-objekt så att avlyssnaren får meddelanden om händelser. | 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 | |
| [åsidosätt]
Disconnects the Consumer from its remote destination. | AbstractConsumer | |
|
Skickar en händelse till händelseflödet. | EventDispatcher | |
|
Invoked by a MessageResponder upon receiving a fault for a sent message. | MessageAgent | |
|
Kontrollerar om EventDispatcher-objektet har några avlyssnare registrerade för en viss typ av händelse. | EventDispatcher | |
|
Anger om det finns en egenskap angiven för ett objekt. | 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 | |
|
Anger om en instans av klassen Object finns i prototypkedjan för objektet som anges som parameter. | Object | |
|
Logs the MessageAgent out from its remote destination. | MessageAgent | |
|
Anger om den angivna egenskapen finns och är uppräkningsbar. | Object | |
|
Requests any messages that are queued for this Consumer on the server. | AbstractConsumer | |
|
Tar bort en avlyssnare från EventDispatcher-objektet. | 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 | |
|
Anger tillgänglighet för en dynamisk egenskap för slingåtgärder. | 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 | |
|
Returnerar det här objektets strängrepresentation, formaterad i enlighet med språkspecifika konventioner. | Object | |
|
Returnerar det angivna objektets strängbeteckning. | Object | |
|
Unsubscribes from the remote destination. | AbstractConsumer | |
|
Returnerar det angivna objektets primitiva värde. | Object | |
|
Kontrollerar om en händelseavlyssnare är registrerad för det här EventDispatcher-objektet eller något av dess överordnade objekt för den angivna händelsetypen. | EventDispatcher | |
| Metod | Definieras med | ||
|---|---|---|---|
[åsidosätt]
Returns a subscribe message. | MultiTopicConsumer | ||
[åsidosätt]
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 | |
| Händelse | Sammanfattning | Definieras med | ||
|---|---|---|---|---|
| Dispatched when an acknowledge message is received for a sent message. | MessageAgent | ||
| [utsändningshändelse] Skickas när Flash Player eller AIR får operativsystemfokus och blir aktivt. | 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 | ||
| [utsändningshändelse] Skickas när Flash Player eller AIR förlorar operativsystemfokus och blir inaktivt. | 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 | egenskap |
subscriptions:ArrayCollection| Språkversion: | ActionScript 3.0 |
| Produktversioner: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Körningsmiljöversioner: | 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.
Den här egenskapen kan användas som källan för databindning. När den här egenskapen ändras, skickas händelsen propertyChange .
Implementering
public function get subscriptions():ArrayCollection public function set subscriptions(value:ArrayCollection):voidMultiTopicConsumer | () | Konstruktor |
public function MultiTopicConsumer()| Språkversion: | ActionScript 3.0 |
| Produktversioner: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Constructor.
Exempel ( Så här använder du exemplet )
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 | () | metod |
public function addSubscription(subtopic:String = null, selector:String = null, maxFrequency:uint = 0):void| Språkversion: | ActionScript 3.0 |
| Produktversioner: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Körningsmiljöversioner: | 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.
Parametrar
subtopic:String (default = null) | |
selector:String (default = null) | |
maxFrequency:uint (default = 0) |
buildSubscribeMessage | () | metod |
override protected function buildSubscribeMessage():CommandMessage| Språkversion: | ActionScript 3.0 |
| Produktversioner: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Returns a subscribe message.
ReturnerarCommandMessage — The subscribe CommandMessage.
|
buildUnsubscribeMessage | () | metod |
override protected function buildUnsubscribeMessage(preserveDurable:Boolean):CommandMessage| Språkversion: | ActionScript 3.0 |
| Produktversioner: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Returns an unsubscribe mesage.
Parametrar
preserveDurable:Boolean — When true, durable JMS subscriptions are
not destroyed, allowing consumers to later resubscribe and
receive missed messages.
|
CommandMessage — The unsubscribe CommandMessage.
|
removeSubscription | () | metod |
public function removeSubscription(subtopic:String = null, selector:String = null):void| Språkversion: | ActionScript 3.0 |
| Produktversioner: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
This method removes the subscription specified by the subtopic and selector.
Parametrar
subtopic:String (default = null) | |
selector:String (default = null) |
message | Händelse |
mx.messaging.events.MessageEventegenskap MessageEvent.type =
mx.messaging.events.MessageEvent.MESSAGE| Språkversion: | ActionScript 3.0 |
| Produktversioner: | BlazeDS 4, Adobe Digital Enterprise Platform Data Services for Java EE 3 |
| Körningsmiljöversioner: | 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, 01:40 PM Z