Part2:-
Onion Structure of OAF:-
OA Framework applications can be associated like a layer of concentric layers. The core Layer is the Database and the outer most layer is the View Layer which is the OA Page. In between the Page and the database we have the Entity Object, View Object and the Application Module. Each layer knows about only the layer below it.
Application Module knows what all VO's associated with it but not the EO's. The OA Controller delegates the operations to the Application Module. OA Controller does not contain any business logic. In turn the AM calls a method in the VO where the data is queried from the Database.
There are 2 operations, that is Data Pull(Data Up Stack) and Data Push(Data Down Stack).
In the Data Pull controller calls a method in AM, in turn the AM calls a method in VO and VO gets data from Database.
Onion Structure of OAF:-
OA Framework applications can be associated like a layer of concentric layers. The core Layer is the Database and the outer most layer is the View Layer which is the OA Page. In between the Page and the database we have the Entity Object, View Object and the Application Module. Each layer knows about only the layer below it.
Application Module knows what all VO's associated with it but not the EO's. The OA Controller delegates the operations to the Application Module. OA Controller does not contain any business logic. In turn the AM calls a method in the VO where the data is queried from the Database.
There are 2 operations, that is Data Pull(Data Up Stack) and Data Push(Data Down Stack).
In the Data Pull controller calls a method in AM, in turn the AM calls a method in VO and VO gets data from Database.
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