01FusionADFIntro_01FusionADFIntro___.ppt

Editor's Notes

• #1: Schedule: Timing Topic 20 minutes Lecture
• #2: Lesson Aim This lesson gives an overview of Fusion architecture and components. It introduces the essential concepts and structure of ADF and how it fits into the Fusion architecture.
• #3: Components of Oracle Fusion Architecture Oracle Fusion Middleware is a standards-based family of products that are often deployed and used in conjunction with one another to develop Java EE applications, providing the benefits of common security, management, deployment architecture, and development tools. Oracle Fusion Middleware's architecture enables you to leverage your investments in any existing application, system, or technology. Oracle Fusion Middleware includes the following best-of-breed technologies: Oracle BPEL Process Manager: A native Business Process Execution Language (BPEL) engine for Web service orchestration, enabling you to design, define, and execute business processes Oracle Web Services Manager: A console to secure and manage your Web services Oracle Business Rules Engine: A product to enable agile management of business rules Oracle Enterprise Service Bus: A standards-based product that connects existing IT systems and business partners as a set of services, and supports event-driven architectures Oracle Business Activity Monitoring: A product to report insight into business operations Oracle Services Registry: A UDDI v3–compliant registry Oracle JDeveloper: An integrated development environment for creating and composing applications in a unified toolset for all Oracle Fusion Middleware tools. Not only can you use Oracle JDeveloper to build applications, but Oracle developers use JDeveloper to build the other tools.
• #4: Oracle Application Development Framework (ADF) Oracle ADF is an end-to-end application framework that builds on Java EE standards and open-source technologies to simplify and accelerate implementing Java EE applications. It is fully extensible and customizable by adding or modifying libraries. ADF simplifies the tasks of: Creating business services Designing user interfaces to access those services Oracle ADF simplifies Java EE development by minimizing the need to write code that implements design patterns and the application infrastructure. These implementations are provided as part of the framework. Oracle ADF also provides a visual and declarative development experience that minimizes the need to write code and reduces the learning curve for 4GL developers. Business services are implemented as metadata, enabling them to be bound to user interfaces in the same manner regardless of the technology employed in the underlying data model. The use of metadata also enables business rules for databound fields to be specified at the model layer, along with labels, validation, and tool tip properties.
• #5: The Model-View-Controller Design Pattern A good practice when developing applications is to employ design patterns. Design patterns are a convenient way of reusing object-oriented concepts between applications and developers. The idea behind design patterns is simple: document and catalog common behavior patterns between objects. Developers can then make use of these patterns rather than re-create them. One of the frequently used design patterns is the Model-View-Controller (MVC) pattern. In the MVC pattern, the user input, the business logic, and the visual feedback to the user are explicitly separated and handled by three types of objects. Each of these objects is specialized for a particular role in the application: The model manages the data of the application domain, responds to requests for information about its state (usually from the view), and responds to instructions to change state (usually from the controller). The view manages the presentation of the application output to the user. The controller interprets the mouse and keyboard inputs from the user, commanding the model and/or the view to change as appropriate.
• #6: Implementing MVC with the ADF Framework In addition to design patterns, developers often use architectural frameworks to build applications that perform in a standard way. ADF is such a framework, and it implements the MVC design pattern as follows: Business Services: The back-end data model that interacts with the data source. It may be a set of Java classes or Web services, or can be Enterprise JavaBeans (EJBs), TopLink, or ADF Business Components.
• #7: Implementing MVC with the ADF Framework: Model Model: ADF data binding is accomplished in compliance with JSR-227, a data binding and data access facility for Java EE that provides a standard for interactions between UI components and methods available on the business services. With this standard data binding, any Java UI–rendering technology can declaratively bind to any business service.
• #8: Implementing MVC: Controllers Controller: Page flow and UI input processing can be implemented in Struts, JSF, or ADF Controller. The ADF Controller enables you to define task flows, encompassing more than just page flow. The ADF Controller is explained in detail in the lesson entitled “Planning the User Interface.”
• #9: Implementing MVC: View View: The user interface can be a rich client with ADF Swing components, or can use Java ServerFaces and ADF Faces components.
• #10: Technology Choices for ADF BC Applications In this course, you employ the MVC architecture through the use of Oracle ADF and JavaServer Faces: Business Services: ADF Business Components (ADF BC) provides the business services that are responsible for representing database tables and persisting user input values to the database. Model: ADF data binding is accomplished in compliance with JSR-227, a standard data binding and data access facility for Java EE that provides a standard for interactions between UI components and methods available on the business services. With this standard data binding, any Java UI rendering technology can declaratively bind to any business service. Controller: ADF Controller View: Java ServerFaces and ADF Faces; render kits enable the UI components defined by Java ServerFaces or ADF Faces to be rendered differently on different devices. For example, the UI can be rendered on a computer’s browser or on a mobile device such as a cell phone or PDA. Metadata Service: ADF BC applications can also use Metadata Service (MDS) for customization and personalization. This is outside the scope of this course.
• #11: Oracle’s Java and Web Development Tool Oracle JDeveloper 11g is a comprehensive development tool that provides facilities to build Web applications using a common development tool set. This tool has evolved to provide an integrated environment that enables a developer to design, develop, troubleshoot, optimize, and deploy Java EE applications. JDeveloper is the integrated development environment (IDE) that utilizes the Application Development Framework.
• #12: Obtaining Additional Information Oracle Technology Network (Select Help > Oracle Technology Network.) Oracle Fusion Middleware: http://www.oracle.com/technology/products/middleware/index.html JDeveloper: http://www.oracle.com/technology/products/jdev/index.html Oracle ADF: http://www.oracle.com/technology/products/adf/index.html Forums (Select Help > Ask for Help.) Oracle Application Server: http://forums.oracle.com/forums/forum.jspa?forumID=44 JDeveloper: http://forums.oracle.com/forums/forum.jspa?forumID=83 (from Online Help, choose Ask for Help) Web Logs (Get it straight from the mouths of Oracle experts.): You can search Oracle blogs online: http://www.oracle.com/technology/products/jdev/howtos/index.html?msgid=6321674 Oracle Magazine: http://www.oracle.com/technology/oramag/index.html Developer’s Guides (Select Help > All Books.) Fusion Developer’s Guide for ADF Web User Interface Developer’s Guide for ADF Online Help: Display table of contents, index, cue cards, or perform full text search.