code: public String findById(final Map<String, Object> parameter) {
      return new SQL() {
        {
          Class<?> clazz = (Class<?>) parameter.get(CLASS_KEY);
          SELECT("*");
          FROM(EntityUtil.getTableName(clazz));
          WHERE("id=#{" + PARA_KEY + '}');
        }
      }.toString();
    }
docs: 根据主键查找记录
  
  @param parameter
  @return