I have entity items and units, items are related one to many in the unit, I have difficulty entering data into items, where items need a primary key on the unit, while I don't understand how Jcombobox works in getting primary keys or IDs.
item class entity
@Entity()
@Table(name = "item")
public class Item extends Record{
@Column(unique = false, nullable = false, length = 100)
public String name;
@Column(unique = false, nullable = false, length = 50)
public double stock; // untuk menambah terus data jumlah item dari supplier
@ManyToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "unit_id")
public Unit unit;
class unit entity
@Entity()
@Table(name = "unit")
public class Unit extends Record {
@Column(unique = false, nullable = false, length = 100)
public String name;
@Column(unique = false, nullable = false, length = 100)
public String description;
@OneToMany(mappedBy = "unit", cascade = { CascadeType.PERSIST, CascadeType.MERGE, CascadeType.DETACH,
CascadeType.REFRESH })
private List<Item> item;
methode load data for combobox
private void getUnitItem() {
List EntityUnitItem = new Unit(databaseSession).all();
for (Iterator iterator = EntityUnitItem.iterator(); iterator.hasNext();) {
Model.Entity.Unit getUnitItem = (Model.Entity.Unit) iterator.next();
cmbSatuanItem.addItem(getUnitItem.name);
}
}
how do you save one to many on the button?
