Structure of OAF

                                                        Structure of OAF


Let us discuss about the structure of OAF.

OAF follows J2EE Architecture and J2EE follows MVC architecture so therefore ultimately OAF follows MVC Architecture.

The abbreviation of MVC is Model View Controller.

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

Structure of OAF

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 Data Base Transactions)

View is nothing but the OAF Page Output. View is implemented by UIX (User Interface XML).

Controller will take care of web browser activities like HTTP Get and HTTP Post

Controller have got three methods:

• Process Request
• Process Forms Request (HTTP Get)
• Process Form Data (HTTP Post)

HTTP get: While loading the Page we use HTTP Get.

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

The below figure shows the interaction between Model, View, and Controller.

MVC Architecture