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Java Code Implementation Restaurant Entity (JPA Entity): @Entity public class Restaurant { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String name; private String address; private String contactNumber; private String status; @OneToMany(mappedBy = "restaurant") private List<Contact> contacts; @OneToMany(mappedBy = "restaurant") private List<Interaction> interactions; @OneToMany(mappedBy = "restaurant") private List<Order> orders; // Getters and Setters } Contact Entity (JPA Entity): @Entity public class Contact { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String name; private String role; private String email; private String phoneNumber; @ManyToOne @JoinColumn(name = "restaurant_id") private Restaurant restaurant; // Getters and Setters } Interaction Entity (JPA Entity): @Entity public class Interaction { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private LocalDateTime interactionDate; private String interactionType; // e.g., "Call", "Meeting" private String notes; @ManyToOne @JoinColumn(name = "restaurant_id") private Restaurant restaurant; // Getters and Setters } Order Entity (JPA Entity): @Entity public class Order { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private LocalDateTime orderDate; private String orderDetails; private String status; @ManyToOne @JoinColumn(name = "restaurant_id") private Restaurant restaurant; // Getters and Setters } Repository Layer (Spring Data JPA Repositories): @Repository public interface RestaurantRepository extends JpaRepository<Restaurant, Long> {} @Repository public interface ContactRepository extends JpaRepository<Contact, Long> {} @Repository public interface InteractionRepository extends JpaRepository<Interaction, Long> {} @Repository public interface OrderRepository extends JpaRepository<Order, Long> {} Service Layer (Business Logic): @Service public class KAMService { @Autowired private RestaurantRepository restaurantRepository; @Autowired private InteractionRepository interactionRepository; @Autowired private OrderRepository orderRepository; // Add a new restaurant lead public Restaurant addRestaurantLead(Restaurant restaurant) { return restaurantRepository.save(restaurant); } // Record an interaction with a restaurant lead public Interaction recordInteraction(Interaction interaction) { return interactionRepository.save(interaction); } // Track order placement for a restaurant public Order trackOrder(Order order) { return orderRepository.save(order); } } Controller Layer (REST API Endpoints): @RestController @RequestMapping("/api/kam") public class KAMController { @Autowired private KAMService kamService; // Add a new restaurant lead @PostMapping("/leads") public ResponseEntity<Restaurant> addRestaurantLead(@RequestBody Restaurant restaurant) { Restaurant savedRestaurant = kamService.addRestaurantLead(restaurant); return ResponseEntity.status(HttpStatus.CREATED).body(savedRestaurant); } // Record an interaction @PostMapping("/interactions") public ResponseEntity<Interaction> recordInteraction(@RequestBody Interaction interaction) { Interaction savedInteraction = kamService.recordInteraction(interaction); return ResponseEntity.status(HttpStatus.CREATED).body(savedInteraction); } // Track an order @PostMapping("/orders") public ResponseEntity<Order> trackOrder(@RequestBody Order order) { Order savedOrder = kamService.trackOrder(order); return ResponseEntity.status(HttpStatus.CREATED).body(savedOrder); } }
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