Discriminator列映射为实体Hibernate

Question

在hibernate中，是否有可能将鉴别器作为实体？例如，如果我将Department作为子类，将ProcessingDepartment作为基类& AdminDepartment &。 DepartmentType是鉴别器&是映射到DEPT_TYPE表的实体。

Answer 1

是的，这是可能的，但这种关系将是只读的：

@Entity @Inheritence(...) 
@DiscriminatorColumn(name = "DEPT_TYPE_ID") 
public class Department { 
    ... 
    @ManyToOne 
    @JoinColumn(name = "DEPT_TYPE_ID", insertable = false, updatable = false) 
    private DepartmentType deptType; 
    ... 
}