Oracle ADF is a Java EE framework that aims to reduce the complexity of developing Java EE applications by providing visual and declarative development tools, increasing productivity by reducing coding needs and focusing on the application logic rather than infrastructure code, and encouraging best practices through implementation of standard patterns like MVC. It provides an end-to-end solution for building rich web, desktop and mobile clients that access business services using data binding and visual development.

1. Oracle ADF Overview
Prepared By
Karsten Schulz Terp-Nielsen @Oracle Denmark
Presented By
Bahaa Farouk @hp Egypt

2. Oracle ADF
Motivation – Challenges building J2EE apps
 Building J2EE applications can be complex.
 Development time can be extensive.
 Choosing and implementing appropriate design
patterns can be overwhelming.
 “Do it yourself” applications often repeat existing
application code.
 A large portion of “do it yourself” code is dedicated to
common tasks.
 The more code you write, the greater the chance of
errors.
 An application framework is needed.

3. Oracle ADF
Introduction
 Reduces the complexity of J2EE development by
providing visual and declarative development
 Increases development productivity
– Less coding, more reuse
– Focus on the application, not the “plumbing”
 Provides a flexible and extensible environment by
allowing multiple technology choices and
development styles
 Encourages J2EE best practices by implementing
standard J2EE design patterns

4. Oracle ADF
End-to-end J2EE Framework
 Implements standard J2EE best practices
 Model-View-Controller (MVC) design pattern
Rich Clients Web and Wireless Clients
Controller
Model
Business Services
 Focus on the application, not the “plumbing”
 Consolidation and evolution of previous frameworks

5. Oracle ADF
Visual and Declarative Development
 End-to-end Application Development
– J2EE & Services
 Visual
– WYSIWYG editors
– UML modelers
– Structure pane
 Declarative
– Structure pane
– Property inspector
 Code View/Design View Synchronization
– No separate generation step - always synchronized
– Underlying code always accessible

6. Oracle ADF
J2EE Architecture (Simplified)
Enterprise
JavaBeans
ADF Business
Components
Web Services
Java Objects
Clients Business Services Database

7. Oracle ADF
No Standard API for Client Binding
Enterprise
JavaBeans
ADF Business
Components
? JDBC
Web Services
Java Objects
Clients Business Services Database

8. Oracle ADF
ADF Model
Data Controls
Data Binding
JSR-227: “A Standard Data Binding & Data
Access Facility for J2EE” Business
Component
Web
Service
TopLink
Model
EJB
Java
Class

9. Oracle ADF
ADF Model Architecture
Data control: describes the values and
actions defined by the business service
Bindings: define how UI
components use the Client
values and actions in
the data model Bindings
Data Control
Business Service

10. Oracle ADF
ADF Model Architecture
Decouples client and business service layers
Client code contains no references to the
business service
– Better design practice
– Code is more maintainable
Architecture can be extended to add more
types of business services

11. ADF Business Components
Simplifies and
optimizes
O/R mapping
Simplifies and
optimizes
binding of
View to logic
Deployed
either as a
Local Model or
as a remote
Session Facade
Flexible Deployment

12. ADF BC High-level architecture
HTML, Java, and Task-Based Data Presentation Business
XML Interfaces App Service & Manipulation Logic
L
XM Application View Entity
Payment SlowPaying Customer
Plan Mgmt Customers
Bill
Late
Payments
Payment

13. ADF BC Application
View Objects Entity Objects
Top Customer
Customers
Customer
Pending
Order Ord
Orders Database
Application Module

14. Start with
database tables

15. Entity objects encapsulate
business rules, logic,
defaults in a consistent
way for a table

16. View objects
encapsulate SQL
queries to project, join,
filter, order data for
external client interaction

17. Application module defines data
model of view object usages for a
complete application use case

18. UI works with the
application module as
backend business
service

19. As you build new
applications, underlying
components are reusable

20. ADF – Productivity With Choice
Rich Client Web / Wireless
JSF/ADF
Swing / JClient JSP ADF UIX FACES View
Struts/JSF Controller
ADF Bindings
ADF Data Control
Model
ADF Metadata Services
Java
EJB ADF Business Web Business
Session
Classes
Beans
Components
Service Object
Services Services
ADF Business
TopLink EJB Data
JDBC Components
Queries Finders Access
Query Object
ADF Business Persistent
Java Classes EJB Entity Beans Business
Components
TopLink Mapping Entity Object Objects

21. ADF Faces
 Built on top of JSF APIs
 A large component set >100 different components
 Far more advanced and interesting components
– Partial-page rendering, etc.
 ADF model support out-of-the-box
 ADF Faces skins (Look and Feel)
ADF Databinding (JSR 227)
Open Source per January 2006
– http://www.oracle.com/technology/products/jdev/ht
docs/faq_adffaces_apache.html

22. ADF Faces

23. ADF Faces
ADF Faces also includes many of the framework
features most needed by JSF developers today:
– File upload support is integrated at a component
level
– Client-side validation is automatically derived from
Validators and Converters for an improved user
experience
– A pageFlow scope makes it easier to pass values
from one page to another
– A new hybrid state saving strategy gives developers
the best of both client and server-side state saving

24. JSF Architecture Renderer
with ADF UI Component Expr. Language
 EL accesses “bindings” object
to value bind UI components JSF Page
ADF “bindings” Object
 ADF “bindings” object is set
through ADF Filter in web.xml ADF Binding
 Bindings object accesses ADF
ADF DataControl
Binding container, which then
accesses DataControl
 Business Services provide Business Business Business
access to various data sources Service 1 Service 2 Service 3
XML
RDBMS URL
WS

25. Demonstration
Develop a more complex Web Application
based on ADF Faces
1. Create ADF Business Components model
2. Layout flow
3. Make Edit page
4. Optional: Make Create page