Arreglado error

java/roomBooking/src/main/java/com/uva/roomBooking/Controllers/BookingController.java

@@ -9,6 +9,7 @@ import java.util.List;
 
 @RestController
 @RequestMapping("/bookings")
+@CrossOrigin(origins = "http://localhost:4200")
 public class BookingController {
 
     private final BookingRepository bookingRepository;

java/roomBooking/src/main/java/com/uva/roomBooking/Exceptions/GlobalExceptionHandler.java

-package com.uva.roomBooking.exceptions;
+package com.uva.roomBooking.Exceptions;
 
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;

java/roomBooking/src/main/java/com/uva/roomBooking/Models/Booking.java

@@ -2,8 +2,6 @@ package com.uva.roomBooking.Models;
 
 import java.util.Date;
 
-import com.fasterxml.jackson.annotation.JsonIgnore;
-
 import jakarta.persistence.Basic;
 import jakarta.persistence.CascadeType;
 import jakarta.persistence.Column;
@@ -25,7 +23,7 @@ public class Booking {
     @Basic(optional = false)
     private int id;
     @JoinColumn(name = "user_id", referencedColumnName = "id")
-    @ManyToOne(optional = false, fetch = FetchType.LAZY)
+    @ManyToOne(optional = false, fetch = FetchType.LAZY, cascade = CascadeType.MERGE)
     private User userId;
     @JoinColumn(name = "room_id", referencedColumnName = "id")
     @ManyToOne(optional = false, fetch = FetchType.LAZY)
@@ -35,6 +33,7 @@ public class Booking {
     @Column(name = "end_date", nullable = false)
     private Date endDate;
 
+
     public Booking (int id, User userId, Room roomID, Date startDate, Date endDate) {
         this.id = id;
         this.userId = userId;
@@ -82,4 +81,7 @@ public class Booking {
     public Date getEndDate () {
         return this.endDate;
     }
+
+
 }
+

java/roomBooking/src/main/java/com/uva/roomBooking/Models/Hotel.java

@@ -35,7 +35,7 @@ public class Hotel {
   @OneToOne(optional = false, cascade = CascadeType.ALL, fetch = FetchType.EAGER)
   private Address address;
 
-  @OneToMany(mappedBy = "hotelId", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
+  @OneToMany(mappedBy = "hotel", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
   private List<Room> rooms;
 
   public Hotel() {

java/roomBooking/src/main/java/com/uva/roomBooking/Models/Room.java

@@ -32,7 +32,7 @@ public class Room {
     @ManyToOne
     @JoinColumn(name = "hotel_id", referencedColumnName = "id")
     @JsonIgnore
-    private Hotel hotelId;
+    private Hotel hotel;
     @Column(name = "room_number", nullable = false)
     private int roomNumber;
     @Column(name = "type", nullable = false)
@@ -48,7 +48,7 @@ public class Room {
 
     public Room(int id, Hotel hotelId, int roomNumber, Tipo type, boolean available, List<Booking> bookings) {
         this.id = id;
-        this.hotelId = hotelId;
+        this.hotel = hotelId;
         this.roomNumber = roomNumber;
         this.type = type;
         this.available = available;
@@ -64,11 +64,11 @@ public class Room {
     }
 
     public void setHotel(Hotel hotelId) {
-        this.hotelId = hotelId;
+        this.hotel = hotelId;
     }
 
     public Hotel getHotel() {
-        return this.hotelId;
+        return this.hotel;
     }
 
     public void setRoomNumber(int roomNumber) {

java/roomBooking/src/main/java/com/uva/roomBooking/Repositories/RoomRepository.java

@@ -8,6 +8,7 @@ import org.springframework.transaction.annotation.Transactional;
 
 import java.time.LocalDate;
 import java.util.List;
+import java.util.Optional;
 
 public interface RoomRepository extends JpaRepository<Room, Integer> {
 
@@ -16,6 +17,7 @@ public interface RoomRepository extends JpaRepository<Room, Integer> {
 
     // Borrar todas las habitaciones asociadas a un hotel
     @Transactional
+    @Modifying
     void deleteAllByHotelId(int hotelId);
 
     // Encontrar habitaciones disponibles de un hotel en un rango de fechas
@@ -25,7 +27,7 @@ public interface RoomRepository extends JpaRepository<Room, Integer> {
     AND r.available = true 
     AND NOT EXISTS (
         SELECT b FROM Booking b 
-            WHERE b.room.id = r.id 
+        WHERE b.roomID.id = r.id 
         AND (b.startDate <= :endDate AND b.endDate >= :startDate)
     )
 """)