Hibernate @OneToMany without a separate join table

Consider the following database schema: ``` create table UserGroup ( id int not null auto_increment, name varchar(200), primary key(id)); create table User ( id int not null auto_increment, name varchar(200), groupId int not null, primary key(id)); ``` User.groupId = UserGroup.id, so a user can only be a member of one group, but a usergroup can exist of many users. Fine so far, let's make the entities in Hibernate. Here's `User`: ``` @Entity @Table(name = "User") public class User { @Id @Column(name="id", nullable = false) private Integer id; @Column(name="name", length = 200, nullable = true) private String name; @ManyToOne(fetch=FetchType.EAGER) @JoinColumn(name = "groupId", nullable = false, insertable=false, updatable=false) @ForeignKey(name="FK_GroupId") private UserGroup userGroup; /* Getters, Setters, toString, equals & hashCode */ } ``` Here's `UserGroup`: ``` @Entity @Table(name = "UserGroup") public class UserGroup { @Id @Column(name="id", nullable = false) private Integer id; @Column(name="name", length = 200, nullable = true) private String name; @OneToMany(fetch=FetchType.EAGER) private List<User> users; /* Getters, Setters, toString, equals & hashCode */ } ``` Now I'll get an error `"Table mydb.usergroup_user' doesn't exist"` because it expects a join-table. My data structure is "set in stone" due to interoperability with other applications that this application will replace, so I won't be making a join-table. Also, it should not be needed. How can I make a `List<User> users` that simply is a list of User where `User.groupId == UserGroup.Id`?