Consuming HANA XS Odata in a Fiori Transactional App

[Former Member]

Hello Fiori/Gateway experts,

I am trying to consume a HANA XS Odata service in my "Create Sales Order" Fiori App. I want to show the results of a Predictive analysis algorithm to suggest users on what can be purchased. My challenge here is to consume this Odata service that belongs to a different domain.

I found an article online which talks about configuring the HANA XS Odata in SAP Netweaver Gateway by configuring a system alias to the HANA server using an RFC type G. This seems to be working for me as I am able to convert the external odata having same web address as that of the Frontend server. But I am not sure if this is the right approach. Is there any other way I can consume the Odata service directly. If I use the OData service directly, I am currently getting an Error related to CORS.

Let me know I am missing something big here. I haven't worked with analytical apps/external odata services before.

Thanks

[masa_139 · Accepted solution]

Hi Eldhose,

I think it is a job for SAP Web Dispatcher.

Setup of SAP Fiori System Landscape with SAP HANA XS - Setup of SAP Fiori System Landscape - SAP Lib...

Regards,

Masa / SAP Technology RIG

[Former Member · Accepted solution]

Hi Masayuki,

Thanks for your prompt response. So once I get the SAP Web dispatcher configuration done, will the Gateway Odata and HANA XS Odata share the same web address?

Thanks

Eldhose

[masa_139 · Accepted solution]

Hi Eldhose,

From client browser, Web Dispatcher is the http access point. Based on the OData service URL path, Web Dispatcher dispatches http requests to Gateway or HANA XS.

Regards,

Masa / SAP Technology RIG

[Former Member · Accepted solution]

Hello Eldhose,

As Masayuki said above the web-dispatcher will do the job.

Steps:

Check is there is SAP web-dispatcher in your landscape.

• If yes, then you have to define routing rules so that webdispatcher understand based on url which target backend system to call.
  • Defining Routing Rules for SAP Web Dispatcher and SAP HANA XS - Setup of SAP Fiori System Landscape ...
  • Defining Routing Rules for SAP Web Dispatcher and ABAP Front End - Setup of SAP Fiori System Landsca...
•   As part of foundation, you have to open Firewall/port between web-dispatcher and ABAP gateway and HANA XS
• Also if portal is the entry point, SSO set up to HANA XS (I assume for SAP gateway SSO is set up) so that user can be propagated in HANA XS and can access data based on HANA privileges.

If  alternatively, as you said in your post above you can also expose HANA ODATA via gateway as you explained with with RFC call from sap gateway with type G to HANA XS.

Here also, you have to do SSO setup from Gateway to HANA XS for named user propagation.

Thanks,

Sumit