SAPUI5 Support for OData V2 CAP service?

[gregorw]

Hello SAPUI5 Team,

today I was pointed by SAP support to an interresting addition to the SAPUI5 Documentation. Starting with SAPUI5 1.105 the sentence:

"If you want to build an app using CAP and SAP Fiori elements, you need to create an OData V4 CAP service. OData V2 CAP service is currently not supported."

was added to the page Prerequisites for Using SAP Fiori Elements. When you check earlier versions of this page e.g. for 1.104 Prerequisites for Using SAP Fiori Elements this sentence is missing. As this addition basically cut's off support for using OData V2 Services provided by the @sap/cds-odata-v2-adapter-proxy module I would expect a mentioning in the What's New in SAPUI5 1.105 page. But can't find anything related.

Right now there are still gaps when using OData V4 endpoints with Fiori Elements:

• Edit only available with Draft Enabled entities. This requires in CAP the usage of a GUID.
• Analytical Table based on a View with Parameters
• Other issues I can't remember right now

So can the CAP / UI5 / Fiori Elements community please get a statement about this newly introduced limitation?

Best Regards
Gregor

CC: peter.spielvogel marcel.waechter thomas.reiss katja.zoch stefanie.runde

[SebastianEsch]

I hope this is just a misunderstanding on the SAPUI5 side, that CAP only supports OData V4 out of the box and that you need the OData V2 Proxy Gregor mentioned to use Fiori Elements with OData V2.

We have more than 40 Fiori Elements OData V2 apps in our current project, and as Gegor mentioned there are quite some gaps in Fiori Elements OData V4 which were the reason, why we use FE OData V2 for so many apps. We would be very disappointed if support for OData V2 would be dropped from UI5 / Fiori Elements.

Kind regards,
Sebastian

[suneet_agarwal · Accepted solution]

We support OData V2 CAP services for SAPUI5 applications. While you do not need to migrate existing applications, future limitations of this combination of CAP and SAP Fiori elements floorplans for OData V2 will not be addressed through enhancements, and issues support will also be limited.

SAP guidance for creating new applications is to use OData V4 services.

[SebastianEsch · Accepted solution]

Hi suneet.agarwal,

is there any information available how long Fiori Elements for OData V2 will be supported? As mentioned there are several gaps in Fiori Elements for OData V4 and my expectation would be that those gaps would be closed, before support for Fiori Elements for OData V2 would be dropped.

Kind regards,

Sebastian

[gregorw · Accepted solution]

Hi Sebastian,

please list the gaps you face here and let's voice them in the SAP Fiori elements and SAP Fiori tools roundtable tomorrow.

Best Regards
Gregor