当hibernate创建表时，外键约束不正确

Question

我的想法是，我的供应商可以拥有几对VCurrency和Currency。

例如，SupplierA可以拥有这些VC货币和货币联盟：

• VC1 - RC1
• VC1 - RC2
• VC2 - RC1
• VC3 - RC2
• VC3 - RC3

这是我的供应商类：

@Entity
@Table(name = "supplier")
public class Supplier {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long idSupplier;

    private String name;

    @OneToMany(mappedBy = "supplier")
    private List<SupplierCurrency> availableCurrencies;

    //Getters and setters
}

这是我的VCurrency类：

@Entity
@DiscriminatorValue("V")
public class VCurrency extends Currency {

    @ManyToMany(mappedBy = "vCurrency")
    private List<SupplierCurrency> suppliers;

    //Getters and setters
}

这是我的货币类：

@Entity
@Inheritance(strategy= InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(
    name="currencyType",
    discriminatorType= DiscriminatorType.STRING)
public class Currency {

    @Id
    private String symbol;

    private String name;

要合并这一切，这里是我的SupplierCurrency类

@Entity
@Table(name = "supplier_currency")
public class SupplierCurrency {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long idSupplierCurrency;

    @ManyToOne( cascade = {CascadeType.PERSIST, CascadeType.MERGE} )
    @JoinColumn(name="supplier")
    private Fournisseur supplier;

    @ManyToOne( cascade = {CascadeType.PERSIST, CascadeType.MERGE} )
    @JoinColumn(name="v_currency")
    private VCurrency vCurrency;

    @ManyToOne( cascade = {CascadeType.PERSIST, CascadeType.MERGE} )
    @JoinColumn(name="currency")
    private Currency Currency;

}

但是当我启动Spring App时，我收到了这个错误：

org.hibernate.tool.schema.spi.SchemaManagementException: Unable to execute schema management to JDBC target [alter table supplier_currency add constraint FKt2waed3bwbw43k9xkiqebjxjh foreign key (id_supplier_currency) references supplier_currency (id_supplier_currency)]
java.sql.SQLException: Error on rename of '.\#sql-1b0c_1a9' to '.\supplier_currency' (errno: 150 "Foreign key constraint is incorrectly formed")

就像Hibernate试图将supplier_currency链接到自身。