Question

我有2个表：文件夹（简单主键）和文档（复合主键）
我想要一个名为folder_documents的连接表，它将包含具有附加列的两个表的id

有我的实体：

文件夹

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

    @EmbeddedId 
    private DocumentID documentCompositeKey;

    @Column
    private Date date;

文档

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

DocumentID（复合键）

@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_Document（连接表）

@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;

Folder_documents_id（复合键）

Document

问题是我无法在Folder_Documents的{{1}}属性中映射@AssociationOverrides compositeKey，因为hibernate在Document中找不到复合键ID和matricule属性}。文件夹引用很好。

有栈跟踪：

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

已解决，AssociationOverride注释的语法错误

正确的语法：

Enable Development Signing

jpa多对多具有附加列和复合键

1 个答案: