how to trigger handler class read method in RAP OData V4 Web API?

[Chandra_S]

Dear Colleagues,

Good day.

Well, I have a requirement, existing material data coming from third party system to CPI to S/4 HANA MDG and need to create change request and approve it.

So created a RAP service, Table , CDS view , service definition with binding type OData V4 Web API along with behavior definition/implementation In the handler class, defined the methods modify and read. I just want to see if read method is called and data filled. So i would like to know how i can execute/debug the handler class read method.

How can i do the GET call using GW client?

Service URL :  /sap/opu/odata4/sap/xxx_xx_xxx_sb/srvd_a2x/sap/xxxx_xx_xxxx_s/0001/

xxx_xx_xxx_sb -  Service binding         xxxx_xx_xxxx_s  - Service definition

regards

Chandra Kishore.

[adityaIngale66]

you can use consolidation process to create CR using DRF and SOA config. 
https://help.sap.com/docs/SAP_S4HANA_ON-PREMISE/6d52de87aa0d4fb6a90924720a5b0549/dbc19b55f22d7b43e10... 

[Chandra_S]

I was able to achieve this.

- In behavior handler class implementation , implemented  Create method

- In create method , looping through the entities and appending corresponding entity to CDS view and 

  appending values to the table .

- In behavior saver class implementation, implemented Save method .

- Using GET and POST HTTP method, executed the payload and breakpoint triggered in Eclipse(ADT) and can see the response.

regards

[VigneshMP]

Hello,

Direct GET call from Gateway client is usually executed on SQL layer and won't trigger your READ implementation.
Only the EML calls will trigger the READ implementation.

Thanks

[Chandra_S]

Hi Vignesh , I will write the EML call in handler class but how can i trigger the EML call?

[junwu]

you choose unmanaged implementation?

READ ENTITIES OF

just write a small program using eml read call to trigger your method.

odata scenario will not go to that method. 

[Chandra_S]

Hi Junwu,

yes using unmanaged implementation.

So ,in handler class i have to define instance method

METHODS get_instance_authorizations FOR INSTANCE AUTHORIZATION

IMPORTING keys REQUEST requested_authorizations FOR cds_view RESULT result

and make call

READ ENTITIES OF cds_view in LOCAL MODE ENTITY cds_view ALL FIELDS WITH CORRESPONDING #( keys ) RESULT DATA(results).?

Also, how can i trigger(breakpoint/debugging) that method?

[junwu]

you didn't get the point, write a simple report or a class with code using eml read to read your BO, then your handler will be called.

[Chandra_S]

Hi Junwu

In my current case, CPI is not sending the material data. CDS view is blank, so I would like to know if

I can pass the payload in S/4 MDG itself and test?

[junwu]

don't know what you are talking

[RaminS]

@junwu If you really want to help, give him a sample of this program you are suggesting, it can't take more than a minute of your time. If you don't want to help, then don't be rude to him.