CAIRNGORM ARCHITECTURE IN FLEX PDF

Cairngorm is based on Model View Controller (MVC) framework, specifically designed to facilitate complex state and data synchronization. Over the past few years, Cairngorm architecture has been hugely embraced for developing enterprise Flex applications. While there are a lot of. For the love of GOD, don’t use Cairngorm (2) as a framework. Use either RobotLegs or Parsley. Both of which has awesome documentation.

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While generating this project, CDB has added a library, clear. For some pieces of property, the builder has already erected the frames for certain house models, but other pieces of property have only piles of construction materials guarded by specially trained dogs. The main application, or loader, can dynamically cairnform other modules that it requires, when it needs them.

The execute method can update the central Model, as well as invoke a Service class which typically involves communication with a remote server. To make some of the columns editable, change the editable attribute of these DataGridColumn s to true.

The author of PureMVC wanted to create a framework xrchitecture could have been ported to fldx programming languages, and this approach inadvertently delivers a product that underutilizes benefits offered by language-specific constructs.

Business Delegates form an abstraction layer between the server-side services and the main frontend application. PureMVC is a framework for creating applications based upon the well-established model—view—controller design pattern. In Mate, as opposed to Cairngorm, an application developer can configure multiple handlers for each event and specify the sequence in which they should be invoked by assigning priorities in the event handler.

Cairngorm separates business- and UI-related work into different layers, which means that the work of the project team can be split between developers responsible for the visual portion and those who are coding just the business logic of the application.

Some people prefer working with frameworks that are based on the Model-View-Controller pattern; others like dealing with libraries of components.

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The Model tier is represented by the class ModelLocatorwhich stores the application-specific data these are often collections of value objectsa.

The application developers are not forced to do all of their plumbing exclusively via Mate and are free to use standard Flex event processing along with the EventMap object offered by Mate. I am happy to report that one of my favorite Java bugs ever is still on the web, after more than 21 years!

The other benefit is reusability of the modules.

Enterprise Development with Flex by Yakov Fain, Anatole Tartakovsky, Victor Rasputnis

Event is not leveraged by the PureMVC framework, the Notification class has the property called body typed as Objectwhich is a place for storing application-specific data that may need to be carried by a notification object.

Create a common ancestor to all your commands and define the fault method there to avoid repeating the same code in each command class. Clear Toolkit is a collection of code generators, methodologies, and smart components. Pictorial description of Cairngorm Architecture: The Controller layer is implemented as a singleton Front Controller. Flex framework features to support large apps. This class creates an event with an ID AppController.

Flex Tutorials – Selecting the Right Flex Application Framework | Flexshishak’s Blog

architwcture EmployeeProxy; private var userProxy: For some reason, the author of this code decided not to use EmployeeVO here and stores each Employee attribute separately in SaveEmployeeEvent.

It includes a number of handy components that enhance the standard controls of the Flex framework and a number of classes simplifying communication with the database layer. Your team is working on a flex project that is part of the bigger picture a baseline Flex Application.

The architectural framework Cairngorm was created cairngogm Alistair McLeod and Steven Webster while they were working at the company iteration:: A static reference to the ModelLocator singleton instance is used by the View layers to locate the required data. In this case, the parser could have injected the data directly to the View without even performing this loop converting XML into an array.

How long has this framework been around? Start Free Trial No credit card required. On the other hand, it will create more parts in your application that require maintenance and testing.

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Although keeping all application events in one place simplifies their maintenance, it leads to tighter coupling of the application components. Your reuse is governed by the Creative Commons Attribution 3. Using the Flash Builder 4 data-centric features with Parsley and other frameworks. In general, if you are going with caairngorm, you need a multilayered framework and intelligent registration services that are written specifically for the task. The locate the required service in the Service Locator, call the given method on it and route the response back to a responder object.

All destinations pertaining to the application as well as the module level remote objects should be declared here:. See its methods setCredentials and setRemoteCredentials for details. We prefer working with frameworks that offer enhanced Flex components rather than just separation of work among team members.

Because this application does not save modified data anywhere other than in memory, no other fled calls are made to pass the changed data to the server side for persistence. The command folder is for Command classes; control is for events and FrontController ; the Arcchitecture is located in the model folder; and the view folder has visual components as shown in Figures through Cairngorm was designed to ensure that UI components do not need to know where data is located.

Flex architecture

The fact that all services are located in a central place allows us to quickly reconfigure the data sources, i. These objects are included in the main application as follows:. Switching to a real data model is just a matter of changing a couple of properties in this injector. This project will contain both Flex and Java code.