Structure of OAF (Explain About MVC Architecture)

OAF Follows J2EE Architecture. J2EE Follows MVC Architecture so therefore ultimately OAF Follows MVC Architecture.

MVC Stands for Mode, View , Controller.

MVC is the Clean design interface between Model ,View and Controller.

 Model:

Model will take care the Data base related transactions, Model contains the following.

• Entity Object (EO)
• View Object (VO)
• Callable Statement (PL/SQL Statement)
• Prepare Statement (Single Select Statement)
• OADB Transactions (Oracle Apps Database Transactions)

View:

View is nothing but OAF Page output. View is implemented by UIX(User interface XML).

Controller:

Controller will take care of web browser activities like HTTP Get and HTTP Post Controller have got three methods.

• Process Request
• Process Form Request (HTTP Get)

          While loading the Page we will use HTTP Get.

• Process Form Data (HTTP Post)

         After Loading the page if we want any changes then we use HTTP Post.

The below figure will shows the interaction between Model view controller.