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This article demonstrates how to redefine the OData services to enhance the security of the applications.

Procedure

Step 1

Create a new project in transaction SEGW.

Step 2

Right-click on the Data Model → Redefine → OData Service (SAP GW) to enter the Redefine Service Wizard. Enter the following information:

Technical Service Name: /IQX/FAB_SRV

Version: 001

Click Next.

Step 3

Select all the Services and click Finish.

Click Save.

Step 4

Go to Data Model → Model References → /IQX/FAB_MDL-0001 and click Generate. In the Model and Service Definition dialog, click Continue.

Runtime Objects Generated. Take note of the Data provider implementation class and the Service Name.

Step 5 (Optional)

Open the Data provider implementation class ZCL_ZTEST_PROJECT_DPC_EXT. Notice that it inherits from the superclass /IQX/CL_FAB_DPC_EXT.

Step 6

Go to transaction /n/IWFND/MAINT_SERVICE → Add Service. Input the System Alias and the Technical Service Name. Press Enter.

Click Add Selected Services and click Continue.

Step 7

Edit the manifest.json file of the Stand-alone App in the transaction /n/IQX/FAB.

Right-click on the Project Node → Create File.

The Create File option is only visible for Stand-alone applications.

Set the Id / File Name to manifest.json.

Click the Ellipsis button of the Source Element to Edit the source code. A Source Conflict dialog will appear, click Continue to use the content from the Repository.

Locate the "dataSources" section in manifest.json. Replace the “uri“ /iqx/FAB_SRV with the new service name /sap/ZTEST_PROJECT_SRV.

Old JSON:

"dataSources": {
			"FAB_SRV": {
				"uri": "/sap/opu/odata/iqx/FAB_SRV/",
				"type": "OData",
				"settings": {
					"odataVersion": "2.0",
					"localUri": "localService/FAB_SRV/metadata.xml"
				}
			},

New JSON:

"dataSources": {
			"FAB_SRV": {
				"uri": "/sap/opu/odata/sap/ZTEST_PROJECT_SRV",
				"type": "OData",
				"settings": {
					"odataVersion": "2.0",
					"localUri": "localService/FAB_SRV/metadata.xml"
				}
			},

Click Save & Close. Ignore the syntax errors, click Ok.

Step 8

Save Project. The application is now using the redefined service. The security team can create a role that includes this service.

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