For the love of GOD, don’t use Cairngorm (2) as a framework. Use either RobotLegs or Parsley. Both of which has awesome documentation. These explain the Cairngorm Architecture, which is our preferred way to structure Flex applications. Below the introductory material can be found more detailed. In recent years, the Flex technology has been widely used. Adobe Flex application framework designed to start introduction of the Cairngorm framework.
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The role im the View layer in a Cairngorm application is to throw events and bind to data stored in the Model. The command folder is for Command classes; control is for events and FrontController ; the ModelLocator is located in the model folder; and the view folder has visual components as shown in Figures through The Command class updates the model.
We prefer working with frameworks that offer enhanced Flex components rather than just separation of work among team members. If your project will start growing, the ModelLocator may not scale well. The loadEmployeesService class reads Employees.
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Flex – Cairngorm Architecture Overview
framewkrk This leads to the need for additional coding to convert the data to appropriate types. The complete frontend-logic of the RIA is encapsulated within the commands.
The IResponder interface, which is also implemented by the Command class, includes onResult and onFault methods to handle responses returned from the invoked remote service. It offers a number of classes implementing Model, View, and Controller tiers, and interaction between them.
flex – How cairngorm framework works internally – Stack Overflow
The free, open source framework was originally implemented in the ActionScript 3 language for use with Adobe FlexFlash and AIRand it has since been ported to nearly all the major web development platforms. The View portion of the employee list gets updated automatically as a result of data binding. Cairngorm has been around longer than any other Flex framework. Views dispatch events handled by the controller.
IResponder; private var service: With a remoting technology like BlazeDS it is even possible to pass back value objects witch are transformed to their corresponding ActionScript objects in the application, so it can interact with them as if they are created by script. Notify me of new posts via email. Fairngorm a View component fires an franework, FrontController finds the Framewotk class that was registered with this event and calls its method execute.
Get unlimited access to videos, live online training, learning paths, books, tutorials, and more. In Cairngorm everything should be mapped to an event. Explore the Flex Cairngorm framework and improvements: Read Chapters 2and 6and then decide whether you prefer working with the components described there or one of the architectural MVC frameworks.
Unlike the other elemente in the Cairngorm architecture, it does not extend a class or implement an interface, but it need to follow some guidelines: It directly may set values of the model and should only deal with strongly typed value objects. By continuing to use this website, you agree to their use.
The Controller tier is responsible for invoking appropriate code containing the business logic of your application, which is implemented by using global FrontController and ServiceLocator classes as well as additional Command and Delegate classes.
In application, it strives to construct a user-centered, independent, open and rich user experience mobile learning information system. For example, you have to create additional event and command classes for every event that can be dispatched in your application.
In recent years, the Flex technology has been widely used. The Command class then processes the event by running the Command class’ execute method, which is an ICommand interface method.
Most of them also have a central EventDispatcher that allows the views and business logic to communicate without knowing about each other.
Fflex managers who have to work with distributed teams of beginner or mid-level Flex developers and need a safety net to split the project work into smaller controllable tasks e.
The Controller is the most sophisticated part of the Cairngorm architecture. The revcieved event is a generic CairngormEvent and must be casted to the appropriate custom event first.
It also implements the interface IResponderwhich requires you to add the result and fault methods.