You can access SAP Business Warehouse (BW) data that is available in SAP HANA analytic or calculation views.
In an SAP BW-on-SAP HANA system, you can use the SAP HANA modeler to import SAP BW models (for example, SAP HANA-optimized cubes, Data Store Objects (DSO), and BW Query Snapshots) as analytic views and calculation views. Once the models are activated, the application can consume them by connecting to an SAP HANA cube.
For information about implementing an SAP BW-on-SAP HANA system and about making
data available to SAP HANA, see the FAQ: BW on HANA document
at http://www.experiencesaphana.com/community/solutions/net-weaver-bw/bwonhanafaq
.