Question

As you can see I have two tables(Offer,Items)
I have a problem with inserting Items,every time I add Offer it does not insert List of Items. Offer holds a list of items.
Here is my code:

OFFER:

@Entity
public class Offer{

@Id
@GeneratedValue
int id;
private String name;
private String description;

@OneToMany(mappedBy="offer")
private List<Item> items;
//getters and setters

ITEMS:

@Entity
public class Item{

@Id
@GeneratedValue
int idItem;
private String name;
private double price;

@ManyToOne(cascade=CascadeType.ALL)
@JoinColumn(name="idOffer")
private Offer offer;
 // getters and setters

AND HERE IS CODE FOR FILLING TABLES:

    Offer offer=GenerateData.generateOffer();
    List<Item> items=new ArrayList<>();
    for(int i=0;i<3;i++){
        Item item=GenerateData.generateItem();
        items.add(item);
        item.setOffer(offer);
    }
    offer.setItems(items);

    pDB.addOffer(offer);//DAO for adding Offers into DB

Offer is successfully added, but Items are not. Is it problem with mapping?

Answer 1

did you try putting a cascade option on the OneToMany side?