Скачать или смотреть SAP HANA Basics For Developers: Part 6.4 Importing Calculation Views in CAP

This series is based upon SAP HANA on premise and SAP HANA, express edition - HANA 2.0 with XSA and SAP Web IDE for SAP HANA. Originally recorded in January 2019.

With the new Cloud Application Programming Model, we don’t yet have a way to directly import a Calculation View or other native DB artifact into CDS. This import, however, is important if you want to expose these artifacts via Odata V4 services, since that requires a CDS entity or view.

But CDS does have an annotation called @cds.persistence.exists. This annotation allows you to re-define an existing DB object and CDS won’t attempt to create or alter it. It will just assume it already exists in the matching state.

This feature does require you to completely redefine the DB artifact with exactly the same name, columns and column names.

In this video, lets see how we can create a calculation view and other artifacts and expose them to the Cloud Application Programming Model CDS.