Generate a RAP Business Service With The Wizard

1. Create a new package for this tutorial, by choosing New > ABAP Package.

   

2. Enter the following then follow the wizard, choosing a new transport request:

   • Name: ZRAP_TRAVEL_####
   • Description: Travel data generated
   • Request description: Travel service RAP Generator
   
   

1. Choose your package, then choose New > Other Repository Object from the context menu.

   

2. Choose Database Table then Next.

   

3. Enter the following, then choose Next.

   • Name: zrap_travel_####
   • Description: Travel Data Generated

4. Choose the transport request, then choose Finish.

5. The table appears in a new editor.

6. Delete the code key client : abap.clnt; and add the following:

   ABAP

   Copy

   key client            : abap.clnt not null;
   key travel_uuid       : sysuuid_x16 not null;
   travel_id             : /dmo/travel_id not null;
   agency_id             : /dmo/agency_id;
   customer_id           : /dmo/customer_id;
   begin_date            : /dmo/begin_date;
   end_date              : /dmo/end_date;
   @Semantics.amount.currencyCode : 'zrap_travel_####.currency_code'
   booking_fee           : /dmo/booking_fee;
   @Semantics.amount.currencyCode : 'zrap_travel_####.currency_code'
   total_price           : /dmo/total_price;
   currency_code         : /dmo/currency_code;
   description           : /dmo/description;
   overall_status        : /dmo/overall_status;
   local_created_by      : abp_creation_user;
   local_created_at      : abp_creation_tstmpl;
   local_last_changed_by : abp_locinst_lastchange_user;
   local_last_changed_at : abp_locinst_lastchange_tstmpl;
   last_changed_at       : abp_lastchange_tstmpl;    
   
   

7. Format, save, and activate your table ( Shift+F1, Ctrl+S, Ctrl+F3 ).

8. Optional: Check your table by clicking in the editor and choosing Open With > Data Preview.

   

   You must include a key field client with the type abap.clnt.

   You must not use type MANDT since the generator will throw an error.

   In addition, you must include the following administrative fields with the following types.

   These are known as reuse data elements.

   ABAP

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   local_created_by      : abp_creation_user;
   local_created_at      : abp_creation_tstmpl;
   local_last_changed_by : abp_locinst_lastchange_user;
   local_last_changed_at : abp_locinst_lastchange_tstmpl;
   last_changed_at       : abp_lastchange_tstmpl;   
   
   

For more information, see the SAP Help Portal: ABAP RESTful Application Programming Model: RAP Reuse Data Elements

1. Select your table and choose Generate ABAP Repository objects… from the context menu.

   

2. Enter the following and choose Next.

   • Description: Travel data Generated
   • Use case: ABAP RESTful Application Programming Model: UI Service

3. Enter the following:

   • Data definition name: ZI_TRAVEL_####X
   • Alias name: Travel
   

4. Enter the following information for each artifact, then choose Next:

   Artifact	Value	Naming convention
   ABAP implementation class	ZBP_I_TRAVEL_####	ZBP_I_<entity>_<suffix> (BP = Behavior pool; I = interface view)
   Draft Table Name:	ZRAP_TRAVEL_D_####X	Z<prefix>__<entity>_<suffix> (underscore is not permitted as a second or third character)
   CDS projection view entity	ZC_TRAVEL_####	ZC__<entity>_<suffix> (C = consumption view)
   CDS service definition	ZUI_TRAVEL_####	ZUI_<entity>_<suffix> (UI for e.g. Fiori app as opposed to a Web API)
   CDS service binding	ZUI_TRAVEL_O4_####	ZUI_<entity>_<OData version>_<suffix>
   Binding type:	OData V4 - UI	n/a

   The naming convention in general is as follows:
   [/<namespace>/][<prefix>]_<object_name>_[<suffix>].

   For more information, see the SAP Help Portal: Naming Conventions for Development Objects

5. The system displays a list of objects that will be generated. Choose Next

   

6. Choose the transport request, then choose Finish.

The artifacts are generated. You can now see them in the Project Explorer.

1. The service binding appears automatically in a new editor.

   

2. Publish the service binding.

   

   .
   

   

3. You now have a fully-fledged business service for which a Fiori app (based on the Fiori Elements List Reporting template) can be generated. Test this in the Fiori Elements preview, by choosing the Travel entity set from the service binding, then choosing Preview.

   

The service appears in the Fiori Elements preview.

The table does not yet contain any data.

You can create a new Travel - but of course there is no value help or validation checks.

IMPORTANT: If you later add a new CDS view entity to the compositional structure of the data model, make sure that you also extend the behavior definition for the new BO entities. Otherwise your business service will show errors.