Recently when i was implementing Many to Many with Join columns with Additional column, i was getting the following error when i was building my application. Below is the exception from my application stack.
This is because my application doesn't find all of your annotations, because I was annotating both fields and methods. You have to use only one strategy.
Either annotate in fields else methods, here in my case, i was annotating at field level in all classes, except in one class, where i have annotated at the method level (getter/setter) because of that annotation doesn't have any effect. Below is the sample code, which triggers the above exception, where you can see in the MedicineShop class, i have Annotated @EmbeddedId at the method level instead of the field level, Once i move the annotation to the field level, the issue is resolved.
Happy Programming...!!!
Invocation of init method failed; nested exception is org.hibernate.MappingException: Could not determine type for: com.expense.domain.Medicine, at table: Medicine_Shop, for columns: [org.hibernate.mapping.Column(medicine)]
This is because my application doesn't find all of your annotations, because I was annotating both fields and methods. You have to use only one strategy.
Either annotate in fields else methods, here in my case, i was annotating at field level in all classes, except in one class, where i have annotated at the method level (getter/setter) because of that annotation doesn't have any effect. Below is the sample code, which triggers the above exception, where you can see in the MedicineShop class, i have Annotated @EmbeddedId at the method level instead of the field level, Once i move the annotation to the field level, the issue is resolved.
@Entity
@Table(name="Medicine")
public class Medicine{
@Id
@GeneratedValue
private int id;
@Column(name="Name")
private String name;
@Column(name="CompanyName")
private String companyName;
@OneToMany(fetch=FetchType.LAZY, mappedBy="pk.medicine", cascade=CascadeType.ALL)
private Set medicineShop= new HashSet();
}
@Entity
@Table(name="Medicine_Shop")
@AssociationOverrides({
@AssociationOverride(name="pk.medicine",
joinColumns= @JoinColumn(name = "medicine_id")),
@AssociationOverride(name="pk.shop",
joinColumns= @JoinColumn(name = "shop_id"))
})
public class MedicineShop implements Serializable
{
private MedicineShopId pk = new MedicineShopId ();
@Column(name="capacity", length=10, nullable=false)
private int capacity;
@EmbeddedId
public MedicineShopId getPk() {
return pk;
}
public void setPk(MedicineShopId pk) {
this.pk = pk;
}
}
Happy Programming...!!!
