I have two table as hotel
and hotal_room_type
. And there is Many To One mapping from hotal_room_type
to hotel
. Means Primary key of hotel
is foreign key in hotal_room_type
.
Now I am fetching hotal_room_type
data usfing following code
Query query = entityManager.createQuery("from "
+ HotelsRoomType.class.getName() + " where event.id = "
+ eventId);
List<HotelsRoomType> list = query.getResultList();
When I get two records of HotelRoomType having same Hotel then I got Hotel only for first HotelRoomType. For other HotelRoomTypes It gives Hotel object but having 0 in hotelId
variable , means I am unable to receive Hotel object again.
I need to get complete Hotel entity for all HotelRoomTypes. How to make this possible?
Finally I found my answer. I need to add cascade=CascadeType.ALL
in the mapping of the Hotel
entity. Like :
@ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
@JoinColumn(name = "hot_room_frn_hot_id", nullable = false)
public Hotel getHotel() {
return this.hotel;
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.