从Java 8迁移到Java 11时出现JPA/eclipselink错误

66bbxpm5  于 8个月前  发布在  Java
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我正试图将我的Thorntail应用程序从Java 8迁移到Java 11,我遇到了实体关系的问题。使用的Map在Java 8中工作正常,但在Java 11中我有这个错误:

2019-07-03 15:48:12,713 ERROR [stderr] (main) Exception Description: 
  Predeployment of PersistenceUnit [p-unit] failed.

2019-07-03 15:48:12,713 ERROR [stderr] (main) Internal Exception: 
  Exception [EclipseLink-7250] (Eclipse Persistence Services - 
   2.7.3.v20180807-4be1041): 
    org.eclipse.persistence.exceptions.ValidationException

2019-07-03 15:48:12,713 ERROR [stderr] (main) Exception Description: 
  [class com.mytest.data.specific.entities.Table3] uses a non-entity 
   [class com.mytest.data.specific.entities.Table2] as target entity 
     in the relationship attribute [field table2].

我的Entity mapping是这样的:

@MappedSuperclass
public abstract class AbstractIdEntity extends AbstractEntity {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    private Long id;

    public Long getId() {
        return id;
    }

    protected void setId(final Long id) {
        this.id = id;
    }
}
@Entity
@Table(name = "table_2")
public class Table2 extends AbstractIdEntity {

    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(name = "table_1_id", referencedColumnName = "id")
    private Table1 table1;

    @Column(name = "some_info", nullable = false)
    private String someInfo;

    @OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
    @JoinColumn(name = "table_2_id")
    private List<Table3> table3List;
//more stuff
}
@Entity
@Table(name = "table_3")
public class Table3 extends AbstractIdEntity {

    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(name = "table_2_id", referencedColumnName = "id")
    private Table2 table2;

    @Lob
    @Column(name = "some_bytes", nullable = false)
    private byte[] someBytes;

    @OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
    @JoinColumn(name = "table_3_id")
    private List<Table4> table4List;
//more stuff
}

我试图删除子引用到父,但然后EntityManager不会找到任何定义的NamedQuery。我尝试的另一件事是切换到休眠,这个Map工作,但有一些问题,持久化的实体。
我使用的是Thorntail v2.4.0.Final和Adverselink v2.7.3。
有人知道问题出在哪里吗?
我在一个小项目中创建了一个类似的层次结构,并将其上传到github,如果有人想仔细看看-> githubProject

2nbm6dog

2nbm6dog1#

这是一个奇怪的例外。我不知道它是否会修复它,但您的@OneToManyMap应该使用mappedBy属性,而不是指定@JoinColumn s。例如Table3.table2应该这样Map:

@OneToMany(mappedBy="table2", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
    private List<Table3> table3List;

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