Business Add-Ins : Architecture

• In order to enhance a program , a Business Add-In must first be defined.
• Application developers create an interface for the add-in.
• Enhancement management takes this interface and generates and adapter class for implementing it , thus opening a path for implementations created by partners or customers.

Note : Each Business Add-in will have one interface and an adapter class.

1. One Interface with list of methods and with no Implementations.
2. One Adapter class will be predefined by SAP.

• The generated class ( Adapter class ) has the following tasks.

1. Control , the adapter class calls the active implementations.
2. Filtering , If the Add-in has to be executed under certain conditions , then the adapter class ensures that only certain implementations will be executed.