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Oracle ADF 11gR2 Development Beginner's Guide

Chapter 2. Getting Started with ADF

Application Development Framework (ADF) is a JEE development framework that helps a developer to minimize the effort required for developing robust applications for web, desktop, and mobile devices. With the help of ADF's declarative approach, a developer can visualize the data model and proceed with the development of an application rapidly instead of spending time on writing the code.

The benefits you get from using ADF include a rich user interface, components usage, task flow support, declarative development, drag-and-drop binding, a productive environment, security, and customization.

Application Development Framework (ADF) is based on the Model-View-Controller (MVC) architecture and exposes its data model as a business service. The ADF model abstracts the business service layer through metadata, thereby providing a consistent set of APIs for developers to work with, independent of the business service implementation technology.

In this chapter...

Key benefits

Implement a web-based application using the powerful ADF development framework from Oracle

Experience the fun of building a simple web application with practical examples and step-by-step instructions

Understand the power of Oracle ADF 11gR2 and develop any complex application with confidence

Description

Oracle ADF is an end-to-end framework which makes application development simple by providing infrastructure services as well as visual and declarative development right away. "Oracle ADF 11gR2 Development Beginner's Guide" guides any user with programming skills to be able to quickly learn the options and ways to develop rich Internet applications using ADF 11gR2. Containing all the skills that a new user has to use to build an application in ADF 11gR2, this book is designed in such a way so that it enhances the practical feel of developing applications in ADF 11gR2. Starting with the installation and configuration of Oracle ADF 11g RD we will then work through topics such as working with the Model Layer and Model Data followed by displaying and binding the data. Later we will look at Navigations and Flows within applications as well as their layout, look, and feel. "Oracle ADF 11g R2 Development Beginner's Guide" will conclude with us looking at the security and deployment of the applications which have been created.

What you will learn

Explore the installation procedure and the configurations needed to work with Jdeveloper

Familiarize yourself with the ADF Model Layer and work with the Business Components

Identify the components and mplement the validations for the Business Rules

Bind the model data and expose it to the user interface using the data control

Learn to display and arrange the layouts in the View Layer using ADF Faces components

Understand the navigation flows and find out how to pass information between pages

Discover the significance of the Skin Editor to style the pages using CSS styles and themes

Implement the security for your pages and learn how to deploy the application

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Developing Web Applications with Oracle ADF Essentials

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Alexis Lopez Jun 24, 2013

Although this book covers the 11.1.2.3.0 version the concepts are the same as of the latest version (11.1.2.4.0 released on May 2013), it is a great book to get you started with Oracle ADF.I enjoyed the way the chapters are written: first, they introduces you to the concepts that are going to be explained. Then, they have this "Time for Action" section, where you are asked to follow a set of steps in order to better understand a concept. There is another section called "What just Happened" where the author explains what you just did in the "Time for Action" section. At the end of each chapter, there are key questions regarding to the content of the chapter (answers are found at the end of the book). I think this is a good way for learning.Following is described what you will find on each chapter:Chapter 1, Installing and Configuring JDeveloper IDE, shows the steps you should follow in order to start working and get familiar with JDeveloper which is the official IDE for Oracle ADF applications.Chapter 2, Getting Started with ADF, introduces you to the key concepts behind Oracle ADF applications development such as: MVC, Entity Objects, View Objects and Applications Modules. There's also a sample application which guides you to the steps needed in order to develop a simple application.Chapter 3, Understanding the Model Layer, explains deeply what the model layer of an Oracle ADF application looks like and their relationships. It explains the meaning of every option for the Entity Objects and View Objects.Chapter 4, Validating and Using the Model Data, shows the different validations that can be configured in the model layer. Explains the declarative validation mode and how to validate data using Groovy expressions.Chapter 5, Binding the Data, this chapter explains how we can bind the model and view layers of an Oracle ADF application. Key concepts are Data controls and Page Definitions.Chapter 6, Displaying the Data, talks about the development of the Web pages. It explains the concept of Page Template which is an important concept when developing Web applications with many Web pages. Then, you are presented with some of the most important ADF components for building your Web pages.Chapter 7, Working with Navigation Flows, presents the concept of a Task flow and the different types of task flows that ADF offers. It also describes the different components that conform a task flow. An important chapter, since the ADF lifecycle is described here.Chapter 8, Layout with Look and Feel, since Oracle ADF supports skinning, this chapter explains what skinning is, the concepts behind ADF Skinning and how you can create and deploy skins for your application.Chapter 9, Implementing Security, is about roles, permissions, and other security concepts related to Oracle ADF security. It also provides a step by step guide to configure and deploy security for your applications.Chapter 10, Deploying the ADF Application, presents the configurations needed in order to deploy your Oracle ADF application to an application server, which in this case is Weblogic Server. It also explains the structure of the deployment files and deployment descriptors. Shows the steps needed to deploy an Oracle ADF application to a standalone Weblogic server.Chapter 11, Advanced Features of ADF, this chapter is all about advance configurations including: tuning Entity Objects, tuning View Objects, debugging ADF applications, among others.

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San Jun 06, 2013

Being a testing professional it is always helpful to know the basics of all the technologies. This book was of great help to a beginner like me. This book is in simple language and due to the examples and try out sections it keeps the starters interested in the technology and helps them understand it better.

Alejandro Meza Aragon Jul 12, 2013

This book it's good for beginners but also good as a reference guide. I've been developing enterprise applications for more than 10 years and have experienced Java evolution using JDeveloper since its 9.0.2 version. ADF is a very powerful framework to develop rich Internet applications and the way that the author takes you into the journey of learning ADF is a very good start, it covers all the basic functionality of the framework and gives you valuable tips to learn on an easy basis all ADF Framework principles and JDeveloper UI.This book is now for reference in my company and is used for developers newly hired.

Alexander Hansal May 21, 2013

After a thorough first chapter on installing JDeveloper and taking first steps in the IDE, Vinod lays out the concepts of ADF. The book facilitates learning by encouraging the reader to take action and become a true hero by taking their own steps.Naturally, the book contains detailed instructions to create a sample ADF application. Once the sample application is up and running, Vinod takes us into a deeper dive on the ADF components such as Entity Objects, View Objects and Application Modules.In chapter 4, while discussing validation, we are exposed to the first piece of (generated) Java code and the APIs of the ADF components. This is followed by solid chapters on data binding and user interface design with ADF pages.A chapter on navigation flows is next, discussing ADF Task Flows in great depth.The "skinning" chapter is most welcome, introducing the ADF skin editor.Application security is also covered in a separate chapter, adding much value to the information provided so far.The book's closing chapters are on deploying ADF applications and advanced features.All in all, it's a solid and actionable book, with its content assured by reviewers Frank Nimphius and Sten E. Vesterli, most distinguished ADF experts in the community. If you want to ensure that your ADF knowledge is built on a solid foundation, this book is for you.

Serafeim Karapatis May 31, 2013

My last review about a book on ADF was almost six months ago. Looking back in time, it seems that about every six months, for the past 3 years we have a new title release on ADF, which is a crystal clear sign of its maturity and adoption. However, while there are few titles focused on advanced topics or methodologies, there is also a need for helping out those who make or attempt their baby steps on the framework, since the official documentation of Oracle (developer's guide) probably is not too friendly at the first sight. Certainly there is a need for books to explain in simple words and by examples the ADF, so "rookies" can in short time can orientate themselves on the framework. A relevant book, and very good for introduction to programming in the ADF is the " Quick Start Guide to Oracle Fusion Development: Oracle JDeveloper and Oracle ADF (Oracle Press) " of Grant Ronald.In such sense, the "Oracle ADF 11gR2 Development Beginner's Guide", authored by Vinod Krishnan, comes in the right time. It aims at technicians who make their first acquaintance with the ADF, without requiring any special knowledge beyond basic programming in Java. The pace is good, the book is rich in examples and screenshots, but there are also times that deals with technical details that may become overwhelming for a beginners title. The structure of the book is as follows: it includes eleven chapters. The topics developed in the form of: a description of the issue, performance of the execution ("time for action"), an explanation of how the solution works ("what just happened?") followed by a challenge to the reader to further explore things in the section "Have a go hero". Finally, each chapter ends with a summary in the form of questions (quiz) Let's look into it in more detail.The first chapter ("Installing and Configuring JDeveloper IDE") is devoted to the installation and operation of JDeveloper, menus, windows, editors available and the general "philosophy" of it. It's really very informative and useful for someone who comes from another IDE (eg Eclipse or Oracle Forms) so that he/she would feel early comfortable and become productive, something that naturally wants its time. The second chapter ("Getting Started with ADF") explains in basic terms the architecture of ADF and analyze, end-to-end, an example of developing a small application in ADF, with very detailed steps and screenshots. Chapter three ("Understanding the Model Layer") focuses on the ADF Business Components (entities, view objects, application modules) and has a very detailed guide on the declarative options of ADF BC. The next chapter ("Validating and Using the Model Data") gives business validations examples, using declarative features and Groovy expressions. In the second half of it, we learn how to customize the framework's behavior using Java and the handling of transactions. All in all, tt is a very important chapter, and some simplification of it, from the beginner's perspective, would help.Chapter five ("Binding the Data") is really a wonderful chapter which explains precisely and in detail the mechanism of data bindings that is among the strangest things for a newcomer to the world of ADF. The next chapter introduces us to web programming with ADF Faces using templates and gives a brief summary of the user interface components and their properties. Next, chapter seven ("Working with navigation flows") shows us the ADF Controller and its implementation in the form of the ADF task flows. There is also a brief reference to the ADF regions and lifecycle. Moving into chapter eight ("Layout with Look and Feel") there is a breakdown of how the web user interface can be customized using ADF skins. Immediately after comes the "Implementing Security" where one will find simple examples of integrating security into ADF applications. After that, the "Deploying the ADF application" chapter is very useful because it describes the structure of the ADF distributables, how-to exploit the ADF libraries, the MDS and the configuration of the embedded Weblogic Server. The last chapter ("Advanced features of ADF") discusses some of the more advanced topics such as optimizations for ADF BC, contextual events, MDS customization, JDeveloper extensions, etc that are rarely found together in one book.My general opinion is that pretty positive about this title. The Oracle ADF 11gR2 Development Beginner's Guide is a useful book to someone who wants to learn quickly and in a simple way the basics of ADF. The detailed examples of each chapter are accompanied by the online code appendix which also helps to try the solutions directly in JDeveloper. On the other hand, some additions would have made it an ever better title: coverage of some fundamental cases such as creating search forms and criteria, joined view objects, basic programming in JSF and access bindings layer etc or analogies with other Java / .NET or Oracle Forms frameworks...

Oracle ADF 11gR2 Development Beginner's Guide: Oracle ADF is one of the easiest ways to develop rich internet applications. All you need is a little Java to get the most from this book as it takes you step-by-step from installation, to development, to implementation.

What do you get with Print?

Oracle ADF 11gR2 Development Beginner's Guide

Chapter 2. Getting Started with ADF

Model-View-Controller

Creating a simple application in ADF

ADF development practice

Time for action – creating the application workspace

Time for action – setting up the database tables

What just happened?

Note

Time for action – creating a database connection

Have a go hero – run some queries

Build business services

Time for action – creating the business components

Note

Time for action – bind data to the UI components

Time for action – running the application

Tip

What just happened?

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