Execute queries from a Rest Controller

tip

You can clone an already prepared sample which is built on top of spring boot using the spring boot starter library.

src/adapters/rest/UsersController.java

@RestController
@RequestMapping("/users")
public class UsersController {

    private final AlbanoiGateway albanoiGateway;

    public UsersController(AlbanoiGateway albanoiGateway) {
        this.albanoiGateway = albanoiGateway;
    }

    @PostMapping
    public ResponseEntity<User> createUser(@RequestBody CreateUserRequest createUserRequest) {

        // Commands are part of your domain
        var createUserCommand = new CreateUserCommand();
        createUserCommand.setUsername(createUserRequest.getUsername());

        // You don't need to inject the handler itself, let the gateway handle it 😊
        CommandResult<User> createUserResult = albanoiGateway.execute(createUserCommand, User.class);

        return ResponseEntity.ok(createUserResult.getResult());
    }
}