Trans.exec(new Atom() {
	@Override
	public void run() {
		familyMemberService._update(member);
		familyInfoService.updateCreditGiver(member.familyCode);
	}
});
public void updateCreditGiver(String familyCode) {
        //更新农户收信人信息
        FamilyInfo familyInfo = this.fetch(familyCode);
        if (!Lang.isEmpty(familyInfo.members)) {
            familyInfo.creditGiver = "";
            for (int i = 0; i < familyInfo.members.size(); i++) {
                FamilyMember familyMember = familyInfo.members.get(i);
                if (Strings.isNotNull(familyMember.isCreditGiver) && familyMember.isCreditGiver.equals("是")) {
                    familyInfo.creditGiver += familyMember.name + "(" + familyMember.idNumber + ");" ;
                }
            }
            super._update(familyInfo);
        }
    }

问题是：事物执行完回滚了，两张表的数据都没有更新，要怎么在一个方法里边用事物控制更新两张表中的数据？