is there any way to build a Side-by-Side Extension in RAP on BTP without using an unmanaged scenario when reading from an on premise system? Can't seem to find anything about it.
I hope there is an easier way to consume the APIs and to re-use their functionality.
What is the benefit when I have to implement the whole logic of the business object again on BTP?
That is exactly what I did.
But that's what I meant with implementing it all again (in this case in the Query Implementation Class).
This works of course, but I have to take care of data retrieval, update, creation, validation and so on again and can't reuse the business object logic (which is already implemented in the on-prem system).
Yes, there is a way to do this:
After you have your OData scenario ready in on-premise in BTP you need to create
Here are 2 graphics to emphasize this:
For more information you might want to visit class S4D425 "Adaptations to SAP S/4HANA".