jpa多對多，帶有附加列和復合鍵

Question

我有2個表：文件夾（簡單主鍵）和文檔（復合主鍵）
我想要一個名為folder_documents的聯接表，它將包含兩個表的ID和其他列

有我的實體：

夾

@Entity
@Table(name = "folder")

public class Folder {

    @Id
    @SequenceGenerator(name = "folder_seq_gen", sequenceName = "FOLDER_SEQ", allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "folder_seq_gen")
    private long id;

    @Column
    private Date date;

    @OneToMany(mappedBy = "folder_documents_compositeKey.folder",
            cascade = CascadeType.ALL)
    private Set<Folder_Documents> folder_documents;

文獻

@Entity
@Table(name="document")
public class Document {

    @EmbeddedId 
    private DocumentID documentCompositeKey;

    @Column
    private Date date;

DocumentID（復合鍵）

@Embeddable
public class DocumentID implements Serializable {
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    private String id;
    private String matricule;

Folder_Document（聯接表）

@Entity
@Table(name = "folder_documents")
@AssociationOverrides({
    @AssociationOverride(name = "folder_documents_compositeKey.folder",
        joinColumns = @JoinColumn(name = "folder_id")),
    @AssociationOverride(name = "folder_documents_compositeKey.document",
        joinColumns = @JoinColumn(name = "doc_id" , referencedColumnName = "id")), // error mapping there
    @AssociationOverride(name = "folder_documents_compositeKey.document",
        joinColumns = @JoinColumn(name = "matricule" , referencedColumnName = "matricule"))})// error mapping there
public class Folder_Documents {

    @EmbeddedId
    private Folder_Documents_ID folder_documents_compositeKey  = new Folder_Documents_ID();

    @Column
    private Date date;

    @Column
    private String status;

Folder_documents_id（復合鍵）

@Embeddable
public class Folder_Documents_ID implements Serializable { 

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    @ManyToOne(cascade = CascadeType.ALL)
    private Folder folder;
    @ManyToOne(cascade = CascadeType.ALL)
    private Document document;

問題是我無法在Folder_Documents的@AssociationOverrides屬性中映射Document復合鍵，因為休眠狀態無法在Document找到復合鍵ID和@AssociationOverrides屬性。 文件夾引用很好。

有堆棧跟蹤：

Caused by: org.hibernate.AnnotationException: referencedColumnNames(matricule) of com.renault.entity.Folder_Documents_ID.folder_documents_compositeKey.document referencing com.renault.entity.Document not mapped to a single property

Answer 1

已解決，AssociationOverride批注的語法錯誤

正確的語法：

AssociationOverrides({
    @AssociationOverride(name = "folder_documents_compositeKey.folder", joinColumns = @JoinColumn(name = "folder_id")),
    @AssociationOverride(name = "folder_documents_compositeKey.document",  joinColumns = { 
            @JoinColumn(name = "doc_id" , referencedColumnName = "id") ,
            @JoinColumn(name = "matricule" , referencedColumnName = "matricule") })})