livestatus/src/NullColumn.cc

   1 // +------------------------------------------------------------------+
   2 // |             ____ _               _        __  __ _  __           |
   3 // |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
   4 // |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
   5 // |           | |___| | | |  __/ (__|   <    | |  | | . \            |
   6 // |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
   7 // |                                                                  |
   8 // | Copyright Mathias Kettner 2014             mk@mathias-kettner.de |
   9 // +------------------------------------------------------------------+
  10 //
  11 // This file is part of Check_MK.
  12 // The official homepage is at http://mathias-kettner.de/check_mk.
  13 //
  14 // check_mk is free software;  you can redistribute it and/or modify it
  15 // under the  terms of the  GNU General Public License  as published by
  16 // the Free Software Foundation in version 2.  check_mk is  distributed
  17 // in the hope that it will be useful, but WITHOUT ANY WARRANTY;  with-
  18 // out even the implied warranty of  MERCHANTABILITY  or  FITNESS FOR A
  19 // PARTICULAR PURPOSE. See the  GNU General Public License for more de-
  20 // tails. You should have  received  a copy of the  GNU  General Public
  21 // License along with GNU Make; see the file  COPYING.  If  not,  write
  22 // to the Free Software Foundation, Inc., 51 Franklin St,  Fifth Floor,
  23 // Boston, MA 02110-1301 USA.
  24
  25 #include "NullColumn.h"
  26 #include <stdexcept>
  27 #include "Renderer.h"
  28 #include "Row.h"
  29
  30 void NullColumn::output(Row /* row */, RowRenderer& r,
  31                         const contact* /* auth_user */,
  32                         std::chrono::seconds /*timezone_offset*/) const {
  33     r.output(Null());
  34 }
  35
  36 std::unique_ptr<Filter> NullColumn::createFilter(
  37     Filter::Kind /*unused*/, RelationalOperator /*unused*/,
  38     const std::string& /*unused*/) const {
  39     throw std::runtime_error("filtering on null column not supported");
  40 }
  41
  42 std::unique_ptr<Aggregator> NullColumn::createAggregator(
  43     AggregationFactory /*factory*/) const {
  44     throw std::runtime_error("aggregating on null column not supported");
  45 }