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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2009 Sun Microsystems, Inc.
*
* Authors:
*
* Clint Byrum <clint@fewbar.com>
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef DRIZZLED_TEMPORAL_INTERVAL_H
#define DRIZZLED_TEMPORAL_INTERVAL_H
/* @TODO Replace this include with some forward decls */
#include <drizzled/item.h>
#include <drizzled/type/time.h>
namespace drizzled
{
/**
* @brief
* Stores time interval for date/time manipulation
*/
class TemporalInterval
{
public:
TemporalInterval(uint32_t in_year,
uint32_t in_month,
uint32_t in_day,
uint32_t in_hour,
uint64_t in_minute,
uint64_t in_second,
uint64_t in_second_part,
bool in_neg) :
year(in_year),
month(in_month),
day(in_day),
hour(in_hour),
minute(in_minute),
second(in_second),
second_part(in_second_part),
neg(in_neg)
{}
TemporalInterval() :
year(0),
month(0),
day(0),
hour(0),
minute(0),
second(0),
second_part(0),
neg(false)
{}
/**
* Sets whether or not this object specifies a negative interval
* @param[in] in_neg true if this is a negative interval, false if not
*/
inline void setNegative(bool in_neg= true)
{
neg= in_neg;
}
/**
* reverse boolean value of the negative flag
*/
inline void toggleNegative()
{
neg= !neg;
}
/**
* @retval true this is a negative temporal interval
* @retval false this is a positive temporal interval
*/
inline bool getNegative() const
{
return neg;
}
inline uint32_t get_year() { return year; }
inline void set_year(uint32_t new_year) { year = new_year; }
inline uint32_t get_month(){ return month; }
inline void set_month(uint32_t new_month) { month = new_month; }
inline uint32_t get_day(){ return day; }
inline void set_day(uint32_t new_day) { day = new_day; }
inline uint32_t get_hour(){ return hour; }
inline void set_hour(uint32_t new_hour) { hour = new_hour; }
inline uint64_t get_minute(){ return minute; }
inline void set_minute(uint32_t new_minute) { minute = new_minute; }
inline uint64_t get_second(){ return second; }
inline void set_second(uint32_t new_second) { second = new_second; }
inline uint64_t get_second_part(){ return second_part; }
inline void set_second_part(uint32_t new_second_part) { second_part = new_second_part; }
/**
* Populate this TemporalInterval from a string value
*
* To make code easy, allow interval objects without separators.
*
* @param args argument Item structure
* @param int_type type of interval to create
* @param str_value String pointer to the input value
* @return true if the string would result in a null interval
*
*/
bool initFromItem(Item *args, interval_type int_type, String *str_value);
/**
* Adds this interval to a DRIZZLE_LTIME structure
*
* @param[in,out] ltime the interval will be added to ltime directly in the ltime structure
* @param[in] int_type the type of interval requested
* @retval true date was added and value stored properly
* @retval false result of addition is a null value
*/
bool addDate(type::Time *ltime, interval_type int_type);
private:
/**
* The maximum number of text elements to extract into a temporal interval
*/
static const uint32_t MAX_STRING_ELEMENTS = 5;
/**
* Each of these corresponds to an 'interval_type'
*/
static const uint32_t NUM_YEAR_MONTH_STRING_ELEMENTS = 2;
static const uint32_t NUM_DAY_HOUR_STRING_ELEMENTS = 2;
static const uint32_t NUM_DAY_MICROSECOND_STRING_ELEMENTS = 5;
static const uint32_t NUM_DAY_MINUTE_STRING_ELEMENTS = 3;
static const uint32_t NUM_DAY_SECOND_STRING_ELEMENTS = 4;
static const uint32_t NUM_HOUR_MICROSECOND_STRING_ELEMENTS = 4;
static const uint32_t NUM_HOUR_MINUTE_STRING_ELEMENTS = 2;
static const uint32_t NUM_HOUR_SECOND_STRING_ELEMENTS = 3;
static const uint32_t NUM_MINUTE_MICROSECOND_STRING_ELEMENTS = 3;
static const uint32_t NUM_MINUTE_SECOND_STRING_ELEMENTS = 2;
static const uint32_t NUM_SECOND_MICROSECOND_STRING_ELEMENTS = 2;
/**
* @details
* Get a array of positive numbers from a string object.
* Each number is separated by 1 non digit character
* Return error if there is too many numbers.
* If there is too few numbers, assume that the numbers are left out
* from the high end. This allows one to give:
* DAY_TO_SECOND as "D MM:HH:SS", "MM:HH:SS" "HH:SS" or as seconds.
*
* @param[in] length: length of str
* @param[in] cs: charset of str
* @param[out] values: array of results
* @param[out] count: count of elements in result array
* @param transform_msec: if value is true we suppose
* that the last part of string value is microseconds
* and we should transform value to six digit value.
* For example, '1.1' -> '1.100000'
*/
bool getIntervalFromString(const char *str,
uint32_t length,
const CHARSET_INFO * const cs,
uint32_t count,
uint64_t *values,
bool transform_msec);
uint32_t year;
uint32_t month;
uint32_t day;
uint32_t hour;
uint64_t minute;
uint64_t second;
uint64_t second_part;
bool neg;
};
} /* namespace drizzled */
#endif /* DRIZZLED_TEMPORAL_INTERVAL_H */
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