CAIRNGORM FRAMEWORK IN FLEX PDF

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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For web services, call the method getWebService.

Introducing Cairngorm

It offers a number of classes implementing Model, View, and Controller tiers, and interaction between them. The method execute must have an argument—the instance of the CairngormEvent object that may or may not encapsulate some application data for example, some value object that is not used in our scenario. Responders implement the mx.

Cairngorm Framework for Flex Developers p. It is specifically designed to facilitate complex state and data synchronization between the client and the server, while keeping the programming of the View layer detached from the data ftamework. Cairngorm follows the principle of separating the view and business logic which is known as the Model-View-Controller pattern MVC. Cairngorm was designed to ensure that UI components do not need to know where data is located. It also implements the interface IResponderwhich requires you to add the result and fault methods.

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. The role of the View layer in a Cairngorm application is to throw events and bind to data stored in the Model.

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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 fact that all services are located in a central place allows us to quickly reconfigure the data sources, i.

Cairngorm – Agile Enterprise Application Development with Flex [Book]

The value objects of the application have been placed in the folder called vo. Retrieved from ” https: Business Delegates form an abstraction layer between the server-side services and the main frontend application. Even though data binding can help in writing less code, because Cairngorm enforces data binding as the only mechanism of updating the views, it makes them nonreusable.

Post as a cairnggorm Name.

List of Flex frameworks

A collaboration of recognized design patterns, Cairngorm exemplifies and encourages best-practices for RIA development advocated by Adobe Consulting, encourages best-practice leverage of the underlying Flex framework, while making it easier for medium to large teams of software engineers deliver medium to large scale, caiengorm Rich Internet Applications.

It’s extensions for Parsley.

Implemented as a singleton, it contains references to all services an application will use. By using these callbacks the delegate will return to the command class the result or error information of the execution of the command in question.

The business layer retrieves data from the servers and stores it in the memory objects that represent the data model, which use binding to notify the UI components about data arrival or changes.

List of Flex frameworks – Wikipedia

Please note the use of four global objects: Views dispatch events handled by the controller. Research on the Structure Design of Operating Systems p.

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This paper researches the methods of design and developing the information system, which is based on E-learning2. IResponder; private var service: Adobe Flex Master Lu. Notify me of new comments via email. Applied Mechanics and Materials Volumes When a View component fires an event, FrontController finds the Command class that was registered with this event and calls its method execute.

Both of which has awesome documentation and a very active community. The execute method can update the central Model, as well as invoke a Service class which typically involves communication with a remote server. It allows only one-to-one mapping between events and commands.

Therefore it has two methods: How did it happen? Cairngorm is one of the primary open-source software frameworks for application architecture in Adobe Flex. The revcieved event is a generic CairngormEvent and must be casted to the appropriate custom event first.

It manages the view an is declared as [Bindable] to use all variables for data binding in the view. Each cainrgorm must implement the Cairngorm ICommand interface and its execute function.

The class LoadEmployeesEvent package com. To eliminate the need to import CairngormEventDispatcher in every view, starting from Cairngorm 2. The SaveEmployeeEditsEvent event is dispatched: The Controller layer is implemented as a singleton FrontController. For example, employee startDate will be stored as a string and will require code to convert it to Date if any date manipulations will be needed.