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129 lines
3.1 KiB
C++
129 lines
3.1 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/***********************************************************************
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* $Id: intervalcolumn.h 9679 2013-07-11 22:32:03Z zzhu $
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*
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*
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***********************************************************************/
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/** @file */
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#ifndef INTERVALCOLUMN_H
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#define INTERVALCOLUMN_H
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#include <string>
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#include <iosfwd>
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#include <vector>
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#include "returnedcolumn.h"
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#include "functor.h"
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namespace messageqcpp
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{
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class ByteStream;
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}
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/**
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* Namespace
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*/
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namespace execplan
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{
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/**
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* @brief A class to represent a functional column
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*
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* This class is a specialization of class ReturnedColumn that
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* handles a window function.
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*/
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class IntervalColumn : public ReturnedColumn
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{
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public:
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/* from my_time.h */
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enum interval_type
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{
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INTERVAL_YEAR, INTERVAL_QUARTER, INTERVAL_MONTH, INTERVAL_WEEK, INTERVAL_DAY,
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INTERVAL_HOUR, INTERVAL_MINUTE, INTERVAL_SECOND, INTERVAL_MICROSECOND,
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INTERVAL_YEAR_MONTH, INTERVAL_DAY_HOUR, INTERVAL_DAY_MINUTE,
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INTERVAL_DAY_SECOND, INTERVAL_HOUR_MINUTE, INTERVAL_HOUR_SECOND,
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INTERVAL_MINUTE_SECOND, INTERVAL_DAY_MICROSECOND, INTERVAL_HOUR_MICROSECOND,
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INTERVAL_MINUTE_MICROSECOND, INTERVAL_SECOND_MICROSECOND, INTERVAL_LAST
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};
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IntervalColumn();
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IntervalColumn(SRCP&, int);
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IntervalColumn(const IntervalColumn& rhs, const uint32_t sessionID = 0);
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virtual ~IntervalColumn() {}
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const SRCP& val() const
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{
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return fVal;
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}
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void val(const SRCP& val)
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{
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fVal = val;
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}
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const int intervalType() const
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{
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return fIntervalType;
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}
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void intervalType(int intervalType)
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{
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fIntervalType = intervalType;
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}
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const std::string toString() const;
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inline virtual IntervalColumn* clone() const
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{
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return new IntervalColumn (*this);
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}
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virtual bool hasAggregate()
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{
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return false;
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}
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virtual bool hasWindowFunc()
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{
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return false;
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}
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private:
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/**
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* Fields
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*/
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SRCP fVal;
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int fIntervalType;
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// okay to be private for now.
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virtual bool operator==(const TreeNode* t) const
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{
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return false;
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}
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bool operator==(const IntervalColumn& t) const;
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virtual bool operator!=(const TreeNode* t) const
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{
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return false;
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}
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bool operator!=(const IntervalColumn& t) const;
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};
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/**
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* ostream operator
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*/
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std::ostream& operator<<(std::ostream& output, const IntervalColumn& rhs);
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}
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#endif //INTERVALCOLUMN_H
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