Visitor – You prefer to use another framework, but maybe Cairngorm 3 has For example, the Command pattern is still recommended for encapsulating the. Cairngorm is based on Model View Controller (MVC) framework, specifically designed to facilitate complex state and data synchronization. The Current State of Flex Frameworks In this tutorial you will learn a few “best- practices” for Cairngorm projects as well as an extension to the.

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For some reason, the author of this code decided not to use EmployeeVO here and stores each Employee attribute separately in SaveEmployeeEvent.

IResponder; private var service: However, these videos were created by me over two years ago almost to the day.

It is specifically designed to facilitate complex state and data synchronization between the client and the server, while fraamework the programming of the View layer detached from the data implementation.

Adobe Flash Media Ffamework. Regardless of what framework you are going to use, separating various application components in project subfolders helps make the project more organized.

Using Cairngorm with Adobe Flex – Part1 |

At most of the conferences I attend — people come up to me tuyorial discuss Cairngorm. Flex frameworks are software libraries that assist developers in building rich internet applications on the Apache Flex platform. You can download the source code of this application at http: In Part 4 you saw the full Service to Worker pattern demonstrated. If your project will start growing, the ModelLocator may not scale well.


Although keeping all application events in one place simplifies their maintenance, it leads to tighter coupling of the application components. I spoke about Cairngorm 2. Now that you have isolated two specific elements of the Cairngorm Micro-Architecture, you will now create a more complete Cairngorm application.

Introducing Cairngorm

The architectural framework Cairngorm was created by Alistair McLeod and Steven Webster while they were working at the company iteration:: This page was last edited on 25 Decemberat The Front Controller object serves as a central registry of all Cairngorm events.

The AppController implementation package com. 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. This site is no longer being maintained and commenting is disabled.

Apache Flex – A Practical Guide: Introduction to MVC Architecture of Cairngorm

On the same note, changes in the UI are propagated to the server side through this business layer. In the example code, CairngormEventDispatcher dispatches the cgEvent: 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. Many people have asked that I make the Cairngorm Series downloadable the video portions.

ServiceLocator can be used not only as a repository of all services, but also as an authorization mechanism that restricts access to certain application services based on specified credentials. The Command class then processes the event by running the Command class’ execute method, which frameworo an ICommand interface method.


To learn the expanded Cairngorm Flow, you will need to learn a few new Cairngorm elements. On the application startup, the code dispatches LoadEmployeesEvent and, as if by magic, the EmployeeList gets populated from Employees.

Many of them have learned from my tutorials.

Because this application does not save modified data anywhere other than in memory, no other ser vice calls are made to pass the changed data dramework the server side for persistence. Cairngorm cramework one of the primary open-source software frameworks for application architecture in Adobe Flex. 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.

A static reference to the ModelLocator singleton instance is used by the View layers to locate the required data. You will need an FLV player to view them.

The Service to Worker pattern that was discussed in the previous tutorial is essential to this process. It was developed by iteration:: However, before you can properly implement this design pattern you need to learn about the organization of a Cairngorm project. Read about it here and download it here.