CAIRNGORM FRAMEWORK TUTORIAL FLEX PDF
This document is from the authorized Flex curriculum written by learn the basics of building Flex applications using the Cairngorm framework. Flex frameworks are software libraries that assist developers in building rich internet Cairngorm is one of the primary open-source software frameworks for application Hello World Example using Cairngorm · Official Adobe Cairngorm Site. I have just constructed my first Cairngorm application: an Adobe Flex application that uses the Cairngorm application framework, implementing (For example, a user types their username and password into a login box, this.
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Management will also be more comfortable with an Adobe-backed framework.
Cairngorm – Agile Enterprise Application Development with Flex [Book]
The fact that Cairngorm is built around a Command pattern with a centrally located command repository can be very convenient for some projects that require audit or undo functionality. The execute method of SaveEmployeeEditsCommand does not use any delegates, as it just needs to add a newly inserted Employee to the model.
Modularizing Flex applications is one of the major ways of minimizing the size of the downloadable Shockwave Flash SWF files.
When front famework handles the event, it instantiates a new ConnectionCommand and invokes method execute. Now go into the source mode and add the script content as shown below: Even in a midsize application this can translate to a hundred or more additional Cairngorm-specific classes.
Cairngorm was designed to ensure that UI components do not need to know where data is located.
The Delegate implementation package com. Please note that as ActionScript 3 does not support private constructors, the public constructor of this class throws an error if someone tries to improperly instantiate it i. The View portion contains visual components required by your application, value objects, and Cairngorm-specific event classes used for communication with the Model and Controller tiers.
Now your flex application using Cairngorm framework is ready! Meanwhile, keep these observations about Cairngorm in mind:.
If you have to develop a project without experienced Flex developers on your team, however, Cairngorm can give your project a structure that will prevent it from failing. This object is very simple right now and it is not in scope of this tutorial to perform any other development. Open Welcome view in design mode and create a button and associate function onConnect to the onClick event as show below: In this article I would like to give you a tutorial in order to invoke SAP web services with Flex using Cairngorm framework.
I just posted a post with an example. It follows the Model-View-Controller model and could be schematized with: The next point of interest is the class LoadEmployeesCommand.
The Command class just needs to be modified a bit to read these parameters. This post explains how you pass parameters to a Cairngorm command at runtime, via a Cairngorm Event. The SaveEmployeeEditsEvent event is dispatched: For some reason, the author of this code decided not to use EmployeeVO here and stores each Employee attribute separately in SaveEmployeeEvent. The List component the View knows about its model and is bound to it directly via its dataProvider property.
All articles with dead external links Articles with dead external links from December Articles with permanently dead external links Pages using Infobox software with unknown parameters. It allows only one-to-one mapping between events and commands. The problem with this approach is in the global nature of such an event handler.
Agile Enterprise Application Development with Flex by Tony Hillerson
We may again face issues, trying to obtain the result of the command in the class that dispatched the event. Flex frameworks are software libraries that assist developers in building rich internet applications on the Apache Flex platform. Its main differentiator from Cairngorm is that it uses dependency injection to hook the event handlers to controller entities and turorial properties to the data model via injectors.
Have you noticed that the Command class has also reached for the AppModelLocator to be able to update the model? Notify me of new comments via email.
Invoke SAP web services with flex using Cairngorm framework. Stay ahead with the world’s most comprehensive technology and business learning platform.