如果我有两个实体：

@Entity
@Table(name="PARENT_ENTITY")
public class ParentEntity {

    @Id
    @Column(name="ID")
    private Integer id;

    // ... Other fields

    @Column(name="COLUMN_2")
    private String column2;

    // ... Other fields

    // Getters and setters
}

@Entity
@Table(name="CHILD_ENTITY")
public class ChildEntity {

    @Id
    @Column(name="ID")
    private Integer id;

    @Column(name="PARENT_ID")
    private Integer parentId;

    // ... Other fields

    @Formula("(select COLUMN_2 from {schema}.PARENT_ENTITY p where p.ID = PARENT_ID)")
    private String column2;

    // Getters and setters
}

当我持久化childentity的示例时，@formula属性不会被填充：

session.saveOrUpdate(childEntity)

childEntity.getColumn2(); // this equals "" 

childEntity.postValidate() // validation that relies on @Formula values 

// I want to persist if validation succeeds, but not persist if validation fails
session.flush()

有没有一种有效的方法可以做到这一点，而不必每次都去查询父实体？