[英]Entities cannot be mapped properly via hibernate annotations
我有一个发票实体,其中包含另一个实体-交易对手和另一个实体的列表-项目。 在项目清单和发票之间建立关系时,没有问题。 但是,当我尝试在发票实体和交易对手实体之间建立类似的关系时,出现错误:
@OneToOne or @ManyToOne on pl.coderstrust.model.Invoice.counterparty references an unknown entity: pl.coderstrust.model.counterparty.Counterparty
这是我的发票,期望仅包含一个交易对手和一份项目清单。
@Entity
@Table(name = "invoices")
public class Invoice implements Comparable<Invoice>, Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "invoice_id")
private int id;
@Column(name = "date")
private LocalDate date = LocalDate.now();
@ManyToOne(cascade = {CascadeType.DETACH, CascadeType.MERGE, CascadeType.PERSIST,
CascadeType.REFRESH})
@JoinColumn(name = "nip")
private Counterparty counterparty;
@OneToMany(mappedBy = "invoice", cascade = {CascadeType.PERSIST, CascadeType.MERGE,
CascadeType.DETACH, CascadeType.REFRESH})
@JsonBackReference
private List<InvoiceItem> invoiceItems = new ArrayList<>();
这是我的项目实体,可以与一张发票相关:
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "item_id")
private int id;
private String description;
private int numberOfItems;
private BigDecimal amount;
private BigDecimal vatAmount;
@JoinColumn(name = "vat_code")
@Enumerated(EnumType.ORDINAL)
private Vat vat;
@OneToOne(mappedBy = "invoice_id", fetch = FetchType.EAGER, cascade = {CascadeType.DETACH,
CascadeType.MERGE, CascadeType.PERSIST,
CascadeType.REFRESH})
@JsonManagedReference
private Invoice invoice;
这是我的交易对手,应该与许多发票有关:
@Entity
@Table(name = "counterparties")
public class Counterparty implements Serializable {
@Id
@Column(name = "nip")
private String nip;
private String companyName;
private String phoneNumber;
private String bankName;
private String bankNumber;
@OneToOne(fetch = FetchType.LAZY, mappedBy = "counterparty", cascade = CascadeType.ALL)
private Address address;
@OneToMany(mappedBy = "counterparty", fetch = FetchType.LAZY, cascade = {CascadeType.PERSIST,
CascadeType.MERGE,
CascadeType.DETACH, CascadeType.REFRESH})
private List<Invoice> invoices;
发票与对方之间的关系出了什么问题?
当没有将类添加到休眠配置时,通常会抛出该休眠错误。 在使用之前,需要告知Hibernate所有充当实体的类。
您如何使Hibernate知道您的课程? 即通过将类添加到Configuration对象:
configuration.addClass(Counterparty.class);
还是通过将类添加到使用Spring时会扫描实体的程序包中?
另外请注意:Item类似乎有些奇怪吗? 它指定与发票的OneToOne关系; 这不应该是ManyToOne(意味着一个发票可以包含0个或更多项目)吗?
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