找出在Parsley動態命令中發送請求的消息類型

Question

我正在使用動態命令的parsley框架中開發一個應用程序。

下面是示例代碼

public class MyCommand extends EventDispatcher 
{ 
    [Inject] 
    public var service:IService; 

    [Inject(id="model")] 
    public var model:TestModel; 

    public function execute(message:TestMessage):AsyncToken 
    {   
     return service.getResponse(message.requestObject); 
    } 

    public function result(data:Object):void 
    { 

      //Here i want to find out the response is for message type1 or message type2, that called the service. 
     var result:ByteArray=data as ByteArray; 

     var response:ArrayCollection=result.readObject() as ArrayCollection; 

     model.data=response; 

    } 

    //faultCode, faultDetail, faultString, rootCause 
    public function error(info:Object):void 
    {      
     dispatchEvent(new AlertEvent(AlertEvent.SHOW_ALERT,"Service Loading Error", 
      "There was an error in the application")); 
    }   
} 

郵件類

public class TestMessage 
{ 

    public static const Type1:int=0; 
    public static const Type2:int=1; 

    private var _type:int; 

    private var _requestObject:RequestObjectHelper; 

    [Selector] 
    public function get type():int 
    { 
     return _type; 
    } 

    public function set requestObject(value:RequestObjectHelper):void 
    { 
     _requestObject = value; 
    } 

    public function get requestObject():RequestObjectHelper 
    { 
     return _requestObject; 
    } 

    public function TestMessage(type:int) 
    { 
     _type=type; 
    } 
} 

RequestObject類

public class RequestObjectHelper 
    { 
      private var _url:String; 
      private var _resultFormat:String; 
      private var _noCacheParam:Object; 

//getters and setters 
    } 

消息調度代碼

public function handleViewInitialized():void 
{   
    var requestObject:RequestObjectHelper; 
    var message:TestMessage; 

    //msg1 
    requestObject=new RequestObjectHelper(); 

    requestObject.url="url1"; 

    requestObject.resultFormat="amf"; 

    message=new TestMessage(TestMessage.Type1); 

    message.requestObject=requestObject; 

    dispatcher(message); 

    //msg2  
    requestObject=new RequestObjectHelper(); 

    requestObject.url="url2"; 

    requestObject.resultFormat="amf"; 

    message=new TestMessage(TestMessage.Type2); 

    message.requestObject=requestObject; 

    dispatcher(message);    
} 

我希望上面的代碼很容易理解。我儘量保持簡單。 我想從這段代碼中得到什麼如何從服務響應到達時MyCommand類的result方法中調用服務的結果方法來識別哪種類型的消息。

Answer 1

你可以讓你的命令記住它被調用的類型。

private var msgType:String; 

public function execute(message:TestMessage):AsyncToken 
{ 
    msgType = message.type; 
    return service.getResponse(message.requestObject); 
} 

public function result(data:Object):void 
{ 
    //Here i want to find out the response is for message type1 or message type2, that called the service. 
    if(msgType==TestMessage.Type1) 
     trace("Type1"); 
    else if(msgType==TestMessage.Type2) 
     trace("Type2"); 
    else 
     trace(msgType); 
}