Book Image

Developing Web Applications with Oracle ADF Essentials

Book Image

Developing Web Applications with Oracle ADF Essentials

Overview of this book

With ADF, Oracle gives you the chance to use the powerful tool used by Oracle's own developers. Modern enterprise applications must be user-friendly, visually attractive, and fast performing. Oracle Fusion Applications are just that; but to get the desired output you need proven methods to use this powerful and flexible tool to achieve success in developing your enterprise applications. "Developing Web Applications with Oracle ADF Essentials" explains all you need to know in order to build good-looking, user-friendly applications on a completely free technology stack. It explains the highly productive, declarative development approach that will literally have your application running within a few hours, as well as how to use Java to add business logic. "Developing Web Applications with Oracle ADF Essentials" tells you how to develop and deploy web application applications based on the highly productive and free Oracle ADF Essentials framework. You will first learn how to build business services on top of database tables, and then how to easily build a web application using these services. You will see how to visually design the flow through your application with ADF task flows, and how to use Java programming to implement business logic. Using this book, you can start building and deploying advanced web applications on a robust, free platform quickly. Towards the end, you will be ready to build real-world ADF Essentials applications and will be able to consider yourself an ADF Essentials journeyman.
Table of Contents (16 chapters)
Developing Web Applications with Oracle ADF Essentials
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 4. Adding Business Logic

So far, we have only been using the declarative power of JDeveloper and the ADF framework. The application you saw running in the last chapter did not contain a single line of hand-written code. Of course, declarative features can only get you so far –– once you need to add the real-life business rules that are specific to your application, you will have to start writing Java code.

This chapter will give you some examples of this — many other examples are available on the Internet. At the end of the chapter, we will see how to implement the business logic necessary for the DVD rental application.

Tip

If you are using Google to search for code snippets, always start by searching only for results from within the past year (navigate to Search Tools and change the Any time default setting to Past year). A search without a date range is likely to show up old solutions, and a lot of things have got easier in the later versions of JDeveloper.