public void retrieve() {

		if (FacesContext.getCurrentInstance().isPostback()) {
			return;
		}

		if (this.id == null) {
			this.userBE = this.example;
		} else {
			this.userBE = userSerivce.findUser(id);
			if (userBE == null) {
				userBE = new UserBE();
				example = new UserBE();
			}
		}
	}