Book Image

Enterprise Application Development with Ext JS and Spring

By : Gerald Gierer
Book Image

Enterprise Application Development with Ext JS and Spring

By: Gerald Gierer

Overview of this book

Spring and Ext JS are cutting edge frameworks that allow us to build high performance web applications for modern devices, that are now consuming data at a faster rate than ever before. It is the appropriate time for you to understand how to best leverage these technologies when architecting, designing, and developing large scale web development projects. This practical guide condenses an approach to web development that was gained from real world projects, and outlines a simple, practical approach to developing high performance, and enterprise grade web applications. Starting with configuring Java, NetBeans, and MySQL to prepare your development environment, you will then learn how to connect your NetBeans IDE to the MySQL database server. We will then explore the Task Time Tracker (3T) project database structure and populate these tables with test data. Following on from this, we will examine core JPA concepts after reverse engineering the domain layer with NetBeans. Leveraging the Data Access Object design pattern, you will learn how to build the Java DAO implementation layer assisted by generics in base classes, followed by a Data Transfer Object enabled service layer to encapsulate the business logic of your 3T application. The final chapters that focus on Java explore how to implement the request handling layer using Spring annotated controllers, and deploy the 3T application to the GlassFish server. We will then configure the Ext JS 4 development environment and introduce key Ext JS 4 concepts, including MVC and practical design conventions. Covering a variety of important Ext JS 4 strategies and concepts, you will be fully-equipped to implement a variety of different user interfaces using the Ext JS MVC design pattern. Your journey ends by exploring the production build and deployment process using Maven, Sencha Cmd and GlassFish.
Table of Contents (22 chapters)
Enterprise Application Development with Ext JS and Spring
About the Author
About the Reviewers
Introducing Spring Data JPA

Layouts, screens, and workflows

The application starts by displaying the logon window. Without a successful logon you will be unable to reach the main application viewport. The logon window has a very simple design as shown in the following screenshot:

A successful logon will be displayed on the welcome screen as shown in the following screenshot:

The welcome screen has a number of buttons in the header dependent on your permissions. A normal user will only see the Task Logs button and the Logoff button. An admin user will see the additional 3T Admin and Users buttons. We will leave the 3T Admin and Task Log modules for the subsequent chapters.

The user administration interface is based on the most common design pattern in modern enterprise applications. This layout displays a list of users in the left-hand side panel and the user details in the right-hand side panel:

Each of these screen designs has icons and a logo that are not part of the Ext JS framework. The code in the following sections...