@Test
  public void testUpdateNormal() throws SQLException {
    Transaction db = this.db.startTransaction();
    List<School> schools = db.selectAll(School.class);
    School s = schools.get(0);

    Person p = new Person();
    p.setId(2);
    p = db.load(p);
    System.out.println(p);

    System.out.println(p.getSchoolId());
    System.out.println(p.getSchool());
    p.setSchool(s);

    db.update(p);
    db.rollback(true);
  }