Controller calling multiple services

I have a few layers in my WebApplication: Presentation, Service, DAO, Domain. Services call DAO objects which reads data from a Database/File whatever. I have a Controller that needs to fetch data from different Services and set them as part of the Response. Should I put the logic to call different Services in the Controller method or should I create some sort of Facade which in turn will call different Services? If so, in what Layer should the Facade reside? @Path("/") public class MyController { @Autowired private FirstService firstService; @Autowired private SecondService secondService; @GET public Response getData(@QueryParam("query") final String query) { final MyResponse response = new MyResponse(); // Service 1 final String firstData = firstService.getData(query); response.setFirstData(query); if (someCondition) { // Service 2 final String secondData = secondService.getData(query); response.setSecondData(query); } // more Service calls maybe return Response.status(Response.Status.OK).entity(response).build(); } }

Apr 24, 2025 - 08:26

I have a few layers in my WebApplication: Presentation, Service, DAO, Domain.

Services call DAO objects which reads data from a Database/File whatever.

I have a Controller that needs to fetch data from different Services and set them as part of the Response.

Should I put the logic to call different Services in the Controller method or should I create some sort of Facade which in turn will call different Services? If so, in what Layer should the Facade reside?

@Path("/")
public class MyController {

  @Autowired
  private FirstService firstService;

  @Autowired
  private SecondService secondService;

  @GET
  public Response getData(@QueryParam("query") final String query) {
      final MyResponse response = new MyResponse();

      // Service 1
      final String firstData = firstService.getData(query);
      response.setFirstData(query);


      if (someCondition) {
        // Service 2
        final String secondData = secondService.getData(query);
        response.setSecondData(query);
      }

      // more Service calls maybe

      return Response.status(Response.Status.OK).entity(response).build();
  }

}