Use RFC FMs or direct coding for creating Odata services

Hi,

I am a newbie in Odata. I see that there are 2 ways of creating the odata service. either we can do it using RFC FMs using data mapping ( that exist in ECC) or we can do it using direct coding in Odata itself.

Is there any best practice. I read that direct coding is better but then our Gateway and ECC are separate servers so we cannot go directly to any tables and no BAPIs or data elements exist in gateway. Everything is in ECC.

How should i code?

Thanks

Amina