Best way to implement custom controller "/schema" function using Spring Data REST?

Question

What is the best way to implement "/schema" function on custom controllers (explained in rest-bucks ) similar to "[repository]/schema" function with Spring Data Rest?

Answer 1

If entity classes are persisted through Spring Repositories, the solution is to inject PersistentEntityToJsonSchemaConverter into the controller and invoke convert() method.

Below is a code sample using Mongo as Repository

Entity class

@Document
    public class Project implements Identifiable<String> {

        @Id
        private String id;

    @NotNull
        private String name;
    //getters setters
    }

Repository

public interface ProjectRepository extends
        PagingAndSortingRepository<Project, String> {
}

Controller

@Controller
@ExposesResourceFor(Project.class)
@RequestMapping("/projects")
public class ProjectController {
@Autowired
    private PersistentEntityToJsonSchemaConverter jsonSchemaConverter;

    @RequestMapping(value = "/schema", method = RequestMethod.GET, produces = { "application/schema+json" })
    @ResponseBody
    public JsonSchema schema() {
        return jsonSchemaConverter.convert(Project.class);
    }
// implement rest of SDR mechanics

}