Generate code from schemas

[ksajme]

It would be very useful to be able to leverage code generation to make case classes for a Sangria server with an SDL/IDL schema (within a .graphql file, Sangria calls this schema materialization).

Is that a feasible feature addition based on the code generation code being added to this project?

[muuki88]

Hi @ksajme
Thanks for your suggestion. This sounds like a proper use case to me. Just to be clear that I don't get this wrong:

You have a pre-existing schema defined as SDL/IDL file.
Next you want to implement this schema. Normally you would have to implement the case classes your own, but you would like to generate them from the SDL.

I haven't looked at the schema materialisation feature in depth yet, but your suggestion sounds perfect for this plugin.

[ksajme]

Yes, that's exactly it.

The use case is for GraphQL servers. Sangria provides macros to generate case classes if you are using its DSL but if you are using an SDL/IDL schema file as a source (materialization), you are out in the cold.

I'd be curious to see if the code @jonas is working on could be modified to fit this purpose without much fuss.