Book Image

Spring Essentials

Book Image

Spring Essentials

Overview of this book

Spring is an open source Java application development framework to build and deploy systems and applications that run on the JVM. It is the industry standard and the most popular framework among Java developers with over two-thirds of developers using it. Spring Essentials makes learning Spring so much quicker and easier with the help of illustrations and practical examples. Starting from the core concepts of features such as inversion of Control Container and BeanFactory, we move on to a detailed look at aspect-oriented programming. We cover the breadth and depth of Spring MVC, the WebSocket technology, Spring Data, and Spring Security with various authentication and authorization mechanisms. Packed with real-world examples, you’ll get an insight into utilizing the power of Spring Expression Language in your applications for higher maintainability. You’ll also develop full-duplex real-time communication channels using WebSocket and integrate Spring with web technologies such as JSF, Struts 2, and Tapestry. At the tail end, you will build a modern SPA using EmberJS at the front end and a Spring MVC-based API at the back end.By the end of the book, you will be able to develop your own dull-fledged applications with Spring.
Table of Contents (14 chapters)
Spring Essentials
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Understanding the Ember object model


Ember comes with a rich API out-of-the-box, extending vanilla JavaScript classes and introducing new structures, providing enhanced capabilities such as two-way data binding, property observation, and so on. It provides smarter replacements for most of the common JavaScript constructs such as objects and arrays.

Ember.Object is the main base class of all Ember objects. It provides a class system with advanced features such as mixins and constructor methods. Ember.Object provides many special features, such as computed properties, data binding, and property-value change observers.

Declaring types (classes) and instances

You can inherit all the features of Ember.Object in your objects; just extend it in a purely object-oriented fashion, as given in the following code:

var User = Ember.Object.extend({
   ...
});

The preceding snippet is just a declaration of the User type. Now, you need to instantiate this class structure in order to use it in your program,...