坚持收集JPA

Question

我有一个豆子

public class Verbali implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@Basic(optional = false)
@NotNull
@Column(name = "ID")
private Long id;    
@JoinColumn(name = "ID_UTENTE", referencedColumnName = "ID")
@ManyToOne(optional = false)
private Utenti idUtente;
@OneToMany(mappedBy = "idVerbale")
private Collection<PresenzeVerbali> presenzeVerbaliCollection;
@OneToMany(mappedBy = "idVerbale")
private Collection<OrdineDelGiorno> ordineDelGiornoCollection;

当我把我的数据库记录创建在Verbali表上而不是@OneToMany上的记录。 哪里错了???

Answer 1

当我有这种类型的翻译时，我首先保存主要类（在本例中为Verbali），然后保存孩子们将新记录添加到其中。

Verbali verbali = new Verbali();

verbali.setIdUtente(retrieveUtente());
verbali = verbaliPersistence.save(verbali);

for(somestuff){
   PresenzeVerbali pv = new PresenzeVerbali();
   pv.setVerbali = verbali;
   presenzeVerballiPersistence.save(pv);
   //same with other collections
}