Packagemx.rpc
Classpublic class CallResponder
InheritanceCallResponder Inheritance flash.events.EventDispatcher
Implements IResponder

Language Version : ActionScript 3.0
Product Version : Flex 3
Runtime Versions : Flash Player 9, AIR 1.1

This component helps you manage the results for asynchronous calls made from RPC based services, typically from MXML components. While each individual service and operation dispatches result and fault events, it is common to need to use the same operation in different parts of your application. Using one event listener or lastResult value across the entire application can be awkward. Rather than creating two service components which refer to the same service, you can use a simple lightweight CallResponder to manage the event listeners and lastResult value for a specific invocation of a service.

You set the token property of this component to the AsyncToken returned by the service. You can then add event listeners on this component instead of having to add them to each AsyncToken returned. This component also maintains the lastResult property which is a copy of the value returned by the last successful result event dispatched by a token monitored by this service. Though you can bind to either the callResponder.token.result or callResponder.lastResult, the latter will be preserved while a second call to the same service is in progress while the former will be reset as soon as a new service invocation is started.



Public Properties
 PropertyDefined By
  lastResult : *
This property stores the result property of the token each time it delivers a successful result.
CallResponder
  token : AsyncToken
Each CallResponder dispatches result and fault events received from a single token.
CallResponder
Public Methods
 MethodDefined By
  
fault(data:Object):void
This method is called by the AsyncToken when it wants to deliver a FaultEvent to the CallResponder.
CallResponder
  
result(data:Object):void
This method is called by the AsyncToken when it wants to deliver a ResultEvent to the CallResponder.
CallResponder
Events
 Event Summary Defined By
  Dispatched when an Operation call fails.CallResponder
  Dispatched when an Operation invocation successfully returns.CallResponder
Property Detail
lastResultproperty
lastResult:*

Language Version : ActionScript 3.0
Product Version : Flex 3
Runtime Versions : Flash Player 9, AIR 1.1

This property stores the result property of the token each time it delivers a successful result. You can bind to or access this property instead of the token.result property to keep your code from seeing that value cleared out on the second and subsequent call to a particular service method. Additionally, if a fault occurs this value will still be set to the last successful result returned by a token monitored by this CallResponder.

This property can be used as the source for data binding.


Implementation
    public function get lastResult():*
    public function set lastResult(value:any):void
tokenproperty 
token:AsyncToken

Language Version : ActionScript 3.0
Product Version : Flex 3
Runtime Versions : Flash Player 9, AIR 1.1

Each CallResponder dispatches result and fault events received from a single token. This property value specifies that token. You typically set this property to the AsyncToken object returned by the service.

This property can be used as the source for data binding.


Implementation
    public function get token():AsyncToken
    public function set token(value:AsyncToken):void
Method Detail
fault()method
public function fault(data:Object):void

Language Version : ActionScript 3.0
Product Version : Flex 3
Runtime Versions : Flash Player 9, AIR 1.1

This method is called by the AsyncToken when it wants to deliver a FaultEvent to the CallResponder. You do not call this method directly.

Parameters

data:Object — The FaultEvent delivered by the AsyncToken

result()method 
public function result(data:Object):void

Language Version : ActionScript 3.0
Product Version : Flex 3
Runtime Versions : Flash Player 9, AIR 1.1

This method is called by the AsyncToken when it wants to deliver a ResultEvent to the CallResponder. You do not call this method directly.

Parameters

data:Object — The ResultEvent delivered by the AsyncToken

Event Detail
fault Event
Event Object Type: mx.rpc.events.FaultEvent
FaultEvent.type property = mx.rpc.events.FaultEvent.FAULT

Language Version : ActionScript 3.0
Product Version : Flex 3
Runtime Versions : Flash Player 9, AIR 1.1

Dispatched when an Operation call fails.

The FAULT event type.

The properties of the event object have the following values:

PropertyValue
bubblesfalse
cancelabletrue, calling preventDefault() from the associated token's responder.fault method will prevent the service or operation from dispatching this event
currentTargetThe 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.
faultThe Fault object that contains the details of what caused this event.
messageThe Message associated with this event.
targetThe 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.
tokenThe token that represents the call to the method. Used in the asynchronous completion token pattern.
result Event  
Event Object Type: mx.rpc.events.ResultEvent
ResultEvent.type property = mx.rpc.events.ResultEvent.RESULT

Language Version : ActionScript 3.0
Product Version : Flex 3
Runtime Versions : Flash Player 9, AIR 1.1

Dispatched when an Operation invocation successfully returns.

The RESULT event type.

The properties of the event object have the following values:

PropertyValue
bubblesfalse
cancelabletrue, preventDefault() from the associated token's responder.result method will prevent the service or operation from dispatching this event
currentTargetThe 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.
targetThe 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.
resultResult that the RPC call returns.
tokenThe token that represents the indiviudal call to the method. Used in the asynchronous completion token pattern.