I have this problem and I'd appreciate any help...
I have a User entity. A user has a Role (a many to one relationship). And a role has a list of permissions (the many to many relationshp I'm having trouble with).
In my code, I am selecting a single user out of the database, by username.
When I retrieve the user, the user's role is there inside of it. But inside the role, there should be a list of permissions. There should be 4 permissions, but every time, I am only getting one element back in the set.
I have queried the database correctly, and there are indeed 4 permissions attached to that role, so the problem isnt there.
UserEntity:
@Table(name = "users")
public class UserEntity {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@NotEmpty
private String username;
@ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
@JoinColumn(name = "role_id")
private RoleEntity role;
}
RoleEntity:
@Table(name = "roles")
public class RoleEntity {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@NotEmpty
private String name;
private String description;
@ManyToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
@JoinTable(name = "roles_permissions", joinColumns = @JoinColumn(name = "permission_id"),
inverseJoinColumns = @JoinColumn(name = "role_id"))
private Set<PermissionEntity> permissions = new HashSet<>();
}
And here is my repository. I'm calling this method from a service, and am just getting back what I described above.
@Repository
public interface UserRepository extends CrudRepository<UserEntity, String> {
Optional<UserEntity> findByUsername(String username);
}
In my database, I have a table called 'roles_permissions' with the fields role_id and permission_id. There are four records in here. role_id is '1' for all of them, and its linked to permissions 1,2,3,4.
In the users table, there is a field for role_id. And the user that I'm selecting has this field populated with 1.
Okay, nevermind. I've been working on this for a while, and I figured it out as soon as I posted this!
In the @JoinTable annotation, I had "role_id" and "permission_id" the wrong way around!
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