mariadb-columnstore-engine/dbcon/execplan/intervalcolumn.h

/* Copyright (C) 2014 InfiniDB, Inc.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; version 2 of
   the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */

/***********************************************************************
 *   $Id: intervalcolumn.h 9679 2013-07-11 22:32:03Z zzhu $
 *
 *
 ***********************************************************************/

/** @file */

#pragma once
#include <string>
#include <iosfwd>
#include <vector>

#include "returnedcolumn.h"
#include "functor.h"

namespace messageqcpp
{
class ByteStream;
}

/**
 * Namespace
 */
namespace execplan
{
/**
 * @brief A class to represent a functional column
 *
 * This class is a specialization of class ReturnedColumn that
 * handles a window function.
 */
class IntervalColumn : public ReturnedColumn
{
 public:
  /* from my_time.h */
  enum interval_type
  {
    INTERVAL_YEAR,
    INTERVAL_QUARTER,
    INTERVAL_MONTH,
    INTERVAL_WEEK,
    INTERVAL_DAY,
    INTERVAL_HOUR,
    INTERVAL_MINUTE,
    INTERVAL_SECOND,
    INTERVAL_MICROSECOND,
    INTERVAL_YEAR_MONTH,
    INTERVAL_DAY_HOUR,
    INTERVAL_DAY_MINUTE,
    INTERVAL_DAY_SECOND,
    INTERVAL_HOUR_MINUTE,
    INTERVAL_HOUR_SECOND,
    INTERVAL_MINUTE_SECOND,
    INTERVAL_DAY_MICROSECOND,
    INTERVAL_HOUR_MICROSECOND,
    INTERVAL_MINUTE_MICROSECOND,
    INTERVAL_SECOND_MICROSECOND,
    INTERVAL_LAST
  };

  IntervalColumn();
  IntervalColumn(SRCP&, int);
  IntervalColumn(const IntervalColumn& rhs, const uint32_t sessionID = 0);
  ~IntervalColumn() override = default;
  const SRCP& val() const
  {
    return fVal;
  }
  void val(const SRCP& val)
  {
    fVal = val;
  }
  int intervalType() const
  {
    return fIntervalType;
  }
  void intervalType(int intervalType)
  {
    fIntervalType = intervalType;
  }
  const std::string toString() const override;
  inline IntervalColumn* clone() const override
  {
    return new IntervalColumn(*this);
  }

  using ReturnedColumn::hasAggregate;
  bool hasAggregate() override
  {
    return false;
  }
  bool hasWindowFunc() override
  {
    return false;
  }

  std::string toCppCode(IncludeSet& includes) const override;

 private:
  /**
   * Fields
   */
  SRCP fVal;
  int fIntervalType;

  // okay to be private for now.
  bool operator==(const TreeNode* /*t*/) const override
  {
    return false;
  }
  bool operator==(const IntervalColumn& t) const;
  bool operator!=(const TreeNode* /*t*/) const override
  {
    return false;
  }
  bool operator!=(const IntervalColumn& t) const;
};

/**
 * ostream operator
 */
std::ostream& operator<<(std::ostream& output, const IntervalColumn& rhs);

}  // namespace execplan