Data migration SAP BW to HANA

Hello all

I'm developing a SAP HANA XS application which displays data from a SAP BW query.

At the moment I'm looking for a method / best practice to retrieve these data inside the HANA XS application. Possibilities are:

- to transfer the back-end data into HANA tables and to rebuild the BW logic in HANA Views/Server-side JavaScript

- to replicate the BW Query output in HANA tables

- to retrieve the data from BW and to use HANA XS only as front-end (I think, this is not recommended because it doesn't make use of the HANA optimization methods)

Do you know data migration tools / interfaces for these options?

Thanks!

Christoph