Oracle ADF Introduction
implements the application’s infrastructure allowing the developers to focus on the
features of the actual application.
Oracle ADF provides these infrastructure implementations as part of the framework. To
recognize a set of runtime services is not enough, Oracle ADF is also focused on the
development experience to provide a visual and declarative approach to Java EE
development through the Oracle JDeveloper development tool.
Oracle ADF implements the Model-View-Controller design pattern and offers an integrated
solution that covers all the layers of this architecture with solution to such areas as:
Object/Relational mapping, data persistence, reusable controller layer, rich Web user
interface framework, data binding to UI, security and customization.
Extending beyond the core Web based MVC approach, ADF also integrates with the Oracle
SOA and WebCenter Portal frameworks simplifying the creation of complete composite
applications
Architecture:
Oracle ADF is based on the Model-View-Controller (MVC) design pattern.
An MVC application is separated into:
1) A model layer that handles interaction with data-sources and runs the business logic
2) A view layer that handles the application user interface
3) A controller that manages the application flow and acts as the interface between the
Model and the View layers.
Separating applications into these three layers simplifies maintenance and reuse of
components across applications. The independence of each layer from the others results in
a loosely coupled, Service Oriented Architecture (SOA).
Oracle ADF implements MVC and further separates the model layer from the business
services to enable service-oriented development of applications. The Oracle ADF
architecture is based on four layers:
1. The Business Services layer - provides access to data from various sources and
handles business logic.
2. The Model layer - provides an abstraction layer on top of the Business Services layer,
enabling the View and Controller layers to work with different implementations of
Business Services in a consistent way.
3.The Controller layer - provides a mechanism to control the flow of the Web
application.
4. The View layer - provides the user interface of the application.
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