public void removeRole(Role role, RoleDao dao) { if (this.roles == null) this.roles = new HashSet<Role>(); this.roles.remove(role); role.removeUser(this); dao.update(role); }
public void addRole(Role role, RoleDao dao) { if (this.roles == null) this.roles = new HashSet<Role>(); this.roles.add(role); role.addUser(this); dao.update(role); }