Hi,
we are running a BWonHANA System.
In a transformation from ADSO A to ADSO B, we will have to read values from a third ADSO C.
There is a ruletype called "read from ADSO", however, this is not sufficient in every case as it is very basic (only full primary key access, no error handling Options etc.).
That's why we will have to use ABAP-Coding in many cases in order to look up the respective values out of ADSO C.
In the past, we used to encapsulate this lookup-process with ABAP-OO lookup-classes instead of putting a SELECT SINGLE statement into the field Routine which then gets executed for every datarecord. Those lookup-classes did select the data only once per processed datapackage from the database in order to cache it in an internal table in order to use READ TABLE Statements in the field routines for every record instead of the SELECT SINGLE (with other words: application server buffered data access).
However, there is now the question how to proceed on HANA: is it good to keep our old way or is SAP HANA capable enough to now handle "SELECT SINGLE"-Statements with high performance? (Or is there even a more sophisticated concept like CDS with Input / Export Parameters?)
Regards Emanuel