Book Image

Oracle ADF Real World Developer's Guide

By : Jobinesh Purushothaman
Book Image

Oracle ADF Real World Developer's Guide

By: Jobinesh Purushothaman

Overview of this book

Oracle ADF in combination with JDeveloper IDE offers visual and declarative approaches to enterprise application development. This book will teach you to build scalable rich enterprise applications using the ADF Framework, with the help of many real world examples. Oracle ADF is a powerful application framework for building next generation enterprise applications. The book is a practical guide for the ADF framework and discusses how to use Oracle ADF for building rich enterprise applications. "Oracle ADF Real World Developer's Guide" discusses ADF framework in detail. This book contains a lot of real life examples which will help developers to design and develop successful enterprise applications. This book starts off by introducing the development environment and JDeveloper design time features. As you read forward, you will learn to build a full stack enterprise application using ADF. You will learn how to build business services using ADF, enable validation for the data model, declaratively build user interfaces for business service and enable security across application layers.
Table of Contents (20 chapters)
Oracle ADF Real World Developer's Guide
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Business service layer


Business logic for an application resides in the area between the UI layer and datasource, fulfilling the requests from the client by interacting with the datasource or other third-party services. A well designed application may have multiple layered structures for business service implementation, where each layer plays a unique role by improving the extensibility of the entire architecture. Let us take a quick look at the various layers found in a multilayered business service implementation:

  • Service layer : This layer defines the service contracts to be used by a client. The Service layer receives the message sent from the client and delegates it to the appropriate business logic implementation for further processing. The advantage of having a service layer is that it decouples the implementation of services from the service contract, which makes an application more flexible and extensible.

  • Business logic layer : This layer defines the business logic that is required...