public Object getColumnValue(UserColumns column)
        {
            switch (column)
            {
                case ID:
                    return id;
                case COMMENT:
                    return comment;
                case CREATE_TIME:
                    return createTime;
                case DN:
                    return dn;
                case INFO:
                    return info;
                case MODIFY_TIME:
                    return modTime;
                case NAME:
                    return username;
                case TYPE:
                    return type;
                case ZONE:
                    return zone;
                default:
                    throw new RuntimeException("Unhandled column: " + column);
            }
        }