livestatus/src/ColumnFilter.h

   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 #ifndef ColumnFilter_h
  26 #define ColumnFilter_h
  27
  28 #include "config.h"  // IWYU pragma: keep
  29 #include <functional>
  30 #include <memory>
  31 #include <ostream>
  32 #include <string>
  33 #include <utility>
  34 #include "Column.h"
  35 #include "Filter.h"
  36 #include "opids.h"
  37
  38 class ColumnFilter : public Filter {
  39 public:
  40     ColumnFilter(Kind kind, const Column &column, RelationalOperator relOp,
  41                  std::string value)
  42         : Filter(kind)
  43         , _column(column)
  44         , _relOp(relOp)
  45         , _value(std::move(value)) {}
  46     std::string columnName() const { return _column.name(); }
  47     RelationalOperator oper() const { return _relOp; }
  48     std::string value() const { return _value; }
  49     std::unique_ptr<Filter> partialFilter(
  50         std::function<bool(const Column &)> predicate) const override;
  51     bool is_tautology() const override;
  52     bool is_contradiction() const override;
  53     Filters disjuncts() const override;
  54     Filters conjuncts() const override;
  55
  56 private:
  57     const Column &_column;
  58     const RelationalOperator _relOp;
  59     const std::string _value;
  60
  61     std::ostream &print(std::ostream &os) const override;
  62 };
  63
  64 #endif  // ColumnFilter_h