jpa error uses a non-entity [class ch.printsoft.mailhouse.usermgr.entity.Department] as target entity in the relationship attribute

Question

I try to persist my Department and Mandator classes to hsqhldb but it gives this error.

Exception Description: [class ch.printsoft.         


        

Answer 1

Ensure you have both classes has the property of PK and the no parameter constructor. I add the following code in my entity class.

@Entity
public class EntityClass{
   @Id
   @GeneratedValue(strategy=GenerationType.AUTO)
   public int id;
   public EntityClass() {
   } 
   ...
}