mx.rpc.AbstractOperation - Adobe® Flex® 4 Language Reference (Flex 4)

Package	mx.rpc
Class	public class AbstractOperation
Inheritance	AbstractOperation AbstractInvoker EventDispatcher Object
Subclasses	AbstractOperation, Operation, Operation

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

The AbstractOperation class represents an individual method on a service. An Operation can be called either by invoking the function of the same name on the service or by accessing the Operation as a property on the service and calling the send() method.

Public Properties

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	Property		Defined By
		arguments : Object The arguments to pass to the Operation when it is invoked.	AbstractOperation
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		lastResult : Object [read-only] The result of the last invocation.	AbstractInvoker
		makeObjectsBindable : Boolean When this value is true, anonymous objects returned are forced to bindable objects.	AbstractInvoker
		name : String The name of this Operation.	AbstractOperation
		operationManager : Function This property is set usually by framework code which wants to modify the behavior of a service invocation without modifying the way in which the service is called externally.	AbstractInvoker
		properties : Object This is a hook primarily for framework developers to register additional user specified properties for your operation.	AbstractOperation
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object
		resultElementType : Class Like resultType, used to define the ActionScript class used by a given operation though this property only applies to operations which return a multi-valued result (e.g.	AbstractInvoker
		resultType : Class Specifies an optional return type for the operation.	AbstractInvoker
		service : AbstractService [read-only] Provides convenient access to the service on which the Operation is being invoked.	AbstractOperation

Public Methods

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	Method		Defined By
		AbstractOperation(service:AbstractService = null, name:String = null) Creates a new Operation.	AbstractOperation
		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
		cancel(id:String = null):mx.rpc:AsyncToken Cancels the last service invocation or an invokation with the specified ID.	AbstractInvoker
		clearResult(fireBindingEvent:Boolean = true):void Sets the result property of the invoker to null.	AbstractInvoker
		dispatchEvent(event:Event):Boolean Dispatches an event into the event flow.	EventDispatcher
		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
		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
		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(... args):mx.rpc:AsyncToken Executes the method.	AbstractOperation
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		setResult(result:Object):void This hook is exposed to update the lastResult property.	AbstractInvoker
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		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

Events

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	Summary	Defined By
activate	[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.	EventDispatcher
deactivate	[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.	EventDispatcher
fault	Dispatched when an Operation call fails.	AbstractOperation
result	Dispatched when an Operation invocation successfully returns.	AbstractOperation

Property Detail

arguments

property

public var arguments:Object

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

The arguments to pass to the Operation when it is invoked. If you call the send() method with no parameters, an array based on this object is sent. If you call the send() method with parameters (or call the function directly on the service) those parameters are used instead of whatever is stored in this property. For RemoteObject Operations the associated argumentNames array determines the order of the arguments passed.

name

property

name:String

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

The name of this Operation. This is how the Operation is accessed off the service. It can only be set once.

Implementation
public function get name():String
public function set name(value:String):void

properties

property

public var properties:Object

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

This is a hook primarily for framework developers to register additional user specified properties for your operation.

service

property

service:AbstractService [read-only]

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Provides convenient access to the service on which the Operation is being invoked. Note that the service cannot be changed after the Operation is constructed.

Implementation
public function get service():AbstractService

Constructor Detail

AbstractOperation

()

Constructor

public function AbstractOperation(service:AbstractService = null, name:String = null)

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Creates a new Operation. This is usually done directly by the MXML compiler or automatically by the service when an unknown Operation has been accessed. It is not recommended that a developer use this constructor directly.

Parameters

	`service:AbstractService` (default = `null`) — The service on which the Operation is being invoked.

	`name:String` (default = `null`) — The name of the new Operation.

Method Detail

send

()

method

public function send(... args):mx.rpc:AsyncToken

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Executes the method. Any arguments passed in are passed along as part of the method call. If there are no arguments passed, the arguments object is used as the source of parameters.

Parameters

... args — Optional arguments passed in as part of the method call. If there are no arguments passed, the arguments object is used as the source of parameters.

Returns

mx.rpc:AsyncToken — AsyncToken object. The same object is available in the result and fault events from the token property.

Event Detail

fault

Event

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

Property	Value
`bubbles`	false
`cancelable`	true, calling preventDefault() from the associated token's responder.fault method will prevent the service or operation from dispatching this event
`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`.
`fault`	The Fault object that contains the details of what caused this event.
`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.
`token`	The token that represents the call to the method. Used in the asynchronous completion token pattern.

result

Event

Event Object Type: mx.rpc.events.ResultEvent
property ResultEvent.type = 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:

Property	Value
`bubbles`	false
`cancelable`	true, preventDefault() from the associated token's responder.result method will prevent the service or operation from dispatching this event
`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.
`result`	Result that the RPC call returns.
`token`	The token that represents the indiviudal call to the method. Used in the asynchronous completion token pattern.