JPA @ManyToOne CascadeType.PERSIST

Question

Hallo我有一个带有@ManyToOne Relations的实体

@Entity
public class TerminEntity extends AbstractEntity implements Serializable {


    @ManyToOne(cascade = CascadeType.PERSIST)
    @JoinColumn(name = "PERSON_ID")
    private PersonEntity person;

@MappedSuperclass   
public abstract class AbstractEntity implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "termineIdGenerator")
    @SequenceGenerator(name="termineIdGenerator", sequenceName =    "SEQ_TERMINVERWALTUNG")
   private Long id;

当我尝试使用数据库中不存在的PersonEntity来持久化TerminEntity时，我得到

java.lang.IllegalStateException:在同步期间，通过未标记为cascade PERSIST的关系找到新对象: TerminEntity(person=PersonEntity

为什么？@ManyToOne(cascade = CascadeType.PERSIST)注释有什么问题？

在Oracle Weblogic 12c上运行

Answer 1

我不知道为什么，但在将注释更改为

@ManyToOne(optional = false, cascade = { CascadeType.PERSIST, CascadeType.MERGE,   CascadeType.REFRESH })
@JoinColumn(name = "PERSON_ID", referencedColumnName = "ID", nullable = false) 

持久化是可行的。