具有复合键和公共字段org.hibernate.MappingException的java hibernate @ManyToMany：在集合映射中重复的列

Question

I have this tables :

• tbShop with fields

  • idShop
  • idAppli
  • Name

• tbCategorie with fields

  • idCategorie
  • idAppli
  • categName

• tbCategorieShop using for relation manytomany between tbShop and tbCategorie with fields

  • idShop
  • idAppli
  • idCategorie

Entity Shop :

@Entity
@Table(name = "tbShop")
public class Shop implements Serializable {
    private static final long serialVersionUID = 1L;
    @EmbeddedId
    protected ShopPK shopPK;
    @Column(name = "commNom")
    private String name;

    @ManyToMany( fetch=FetchType.EAGER)
    @Cascade({CascadeType.SAVE_UPDATE, CascadeType.ALL})
    @JoinTable(name = "tbCategorieShop",
            joinColumns = {
                @JoinColumn(name = "idAppli", referencedColumnName = "idAppli")
                , @JoinColumn(name = "idShop", referencedColumnName = "idShop")}
            , inverseJoinColumns = {
                @JoinColumn(name = "idCategorie", referencedColumnName = "idCategorie")
                , @JoinColumn(name = "idAppli", referencedColumnName = "idAppli")}

    )
    private List<Categorie> tbCategorie ;

Entity Categorie:

@Entity
@Table(name = "tbCategorie")
public class Categorie implements Serializable {

    private static final long serialVersionUID = 1L;
    @EmbeddedId
    protected CategoriePK categoriePK;

    @Column(name = "categName")
    private String categName;

    @JoinTable(name = "tbCategorieShop", joinColumns = {
        @JoinColumn(name = "idCategorie", referencedColumnName = "idCategorie")
        , @JoinColumn(name = "idAppli", referencedColumnName = "idAppli")}
           , inverseJoinColumns = {
        @JoinColumn(name = "idAppli", referencedColumnName = "idAppli")
        , @JoinColumn(name = "idShop", referencedColumnName = "idShop")}
    )
    @ManyToMany
    private Collection<Shop> shopCollection;
    ... 

Primary Key ShopPk

@Embeddable
public class ShopPK implements Serializable {

    @Basic(optional = false)
    @Column(name = "idAppli")
    private int idAppli;
    @Basic(optional = false)
    @Column(name = "idShop")
    private String idShop;
... }   

Primary Key CategoriePk

@Embeddable
public class CategoriePK implements Serializable {
    @Basic(optional = false)
    @Column(name = "idCategorie")
    private int idCategorie;
    @Basic(optional = false)
    @Column(name = "idAppli")
    private int idAppli;

and I have error

Caused by: org.hibernate.MappingException: Repeated column in mapping for collection: hello.Categorie.shopCollection column: id_appli

Is it possible to have common field in this entites for ManyToMany relation ?

Answer 1

The issue you are facing is because the field "idAppli" is getting repeated in Shop and Categorie entities. You can mark this field as insertable=false and updatable=false at one of the locations at should fix the issue