the following exception happens during hibernate initialisation:
org.hibernate.AnnotationException: A Foreign key refering com.maar.projectbuilder.domain.Language from com.maar.projectbuilder.domain.ItemInfo has the wrong number of column. should be 0
I have the tables as in the screenshot above. Entity classes are written as below.
public class ItemInfo implements Serializable {
@Column(name = "name")
private String name;
@Id
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "item_id", nullable = false)
private Item itemId;
@ManyToOne(targetEntity = Language.class,cascade = CascadeType.ALL)
@JoinColumn(name = "language_item_id", nullable = false)
private Language languageItemId;
@Column(name = "type", nullable = false)
private Integer type;
//getters,setters,constructors
}
another one
public class Language implements Serializable {
@Column(name = "isDefault")
private Integer isDefault;
@Column(name = "abbr")
private String abbr;
@Column(name = "name")
private String name;
@Id
@OneToOne(cascade = {CascadeType.ALL})
@JoinColumn(name = "item_id")
private Item itemId;
}
my item entity
public class Item implements Serializable {
@Column(name = "c4i")
private String c4i;
@Column(name = "status")
private Integer status=1;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private Integer id;
}
How could I resolve this. What am I missing? Thank you in advance!
在ER图中,item_info使用联接主键:item_id,language_item_id和类型,但是在映射中,您仅映射了item_id
Happy News :)
I added referencedColumnName param to JoinColumn annotation and thats working fine now !
Last Entity looking like this.
public class ItemInfo implements Serializable {
@Column(name = "name")
private String name;
@Id
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "item_id", nullable = false)
private Item itemId;
@ManyToOne
@JoinColumn(name = "language_item_id",**referencedColumnName = "item_id"**)
private Language languageItemId;
@Column(name = "type", nullable = false)
private Integer type;
}
Thanks Everybody. Have a nice day.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.