Hibernate problem - "Use of @OneToMany or @ManyToMany targeting an unmapped class"
Your annotations look fine. Here are the things to check:
make sure the annotation is
javax.persistence.Entity
, and notorg.hibernate.annotations.Entity
. The former makes the entity detectable. The latter is just an addition.if you are manually listing your entities (in persistence.xml, in hibernate.cfg.xml, or when configuring your session factory), then make sure you have also listed the
ScopeTopic
entitymake sure you don't have multiple
ScopeTopic
classes in different packages, and you've imported the wrong one.
Mine was not having @Entity
on the many side entity
@Entity // this was commented
@Table(name = "some_table")
public class ChildEntity {
@JoinColumn(name = "parent", referencedColumnName = "id")
@ManyToOne
private ParentEntity parentEntity;
}
Your entity may not listed in hibernate configuration file.