« back to all changes in this revision
Viewing changes to drizzled/temporal_interval.h
- browse files at revision 1105
- compare with another revision
- compare with revision 2164.1.6
- download diff
- download tarball
- view history from revision 1105
- Committer: Brian Aker
- Date: 2009-07-29 15:08:30 UTC
- mfrom: (1093.1.36 captain)
- Revision ID: brian@gaz-20090729150830-8sckl9aatssf1xjd
Merge Jay
- files added:
- drizzled/temporal_interval.cc
- files removed:
- drizzled/function/time/get_interval_value.cc
- files modified:
- drizzled/Makefile.am
added
removed
drizzled/temporal_interval.h
1
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3
*
4
* Copyright (C) 2009 Sun Microsystems
5
*
6
* Authors:
7
*
8
* Clint Byrum <clint@fewbar.com>
9
*
10
* This program is free software; you can redistribute it and/or modify
11
* it under the terms of the GNU General Public License as published by
12
* the Free Software Foundation; version 2 of the License.
13
*
14
* This program is distributed in the hope that it will be useful,
15
* but WITHOUT ANY WARRANTY; without even the implied warranty of
16
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17
* GNU General Public License for more details.
18
*
19
* You should have received a copy of the GNU General Public License
20
* along with this program; if not, write to the Free Software
21
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22
*/
23
#include <drizzled/item.h>
24
25
namespace drizzled
26
{
27
28
/**
29
* @brief
30
* Stores time interval for date/time manipulation
31
*/
32
class TemporalInterval
33
{
34
public:
35
36
TemporalInterval(uint32_t in_year,
37
uint32_t in_month,
38
uint32_t in_day,
39
uint32_t in_hour,
40
uint64_t in_minute,
41
uint64_t in_second,
42
uint64_t in_second_part,
43
bool in_neg)
44
:
45
year(in_year),
46
month(in_month),
47
day(in_day),
48
hour(in_hour),
49
minute(in_minute),
50
second(in_second),
51
second_part(in_second_part),
52
neg(in_neg)
53
{}
54
55
TemporalInterval()
56
:
57
year(0),
58
month(0),
59
day(0),
60
hour(0),
61
minute(0),
62
second(0),
63
second_part(0),
64
neg(false)
65
{}
66
67
/**
68
* Sets whether or not this object specifies a negative interval
69
* @param[in] in_neg true if this is a negative interval, false if not
70
*/
71
void setNegative(bool in_neg= true)
72
{
73
neg= in_neg;
74
}
75
76
/**
77
* reverse boolean value of the negative flag
78
*/
79
void toggleNegative()
80
{
81
neg= !neg;
82
}
83
84
/**
85
* @retval true this is a negative temporal interval
86
* @retval false this is a positive temporal interval
87
*/
88
bool getNegative() const
89
{
90
return neg;
91
}
92
93
/**
94
* Populate this TemporalInterval from a string value
95
*
96
* To make code easy, allow interval objects without separators.
97
*
98
* @param args argument Item structure
99
* @param int_type type of interval to create
100
* @param str_value String pointer to the input value
101
* @return true if the string would result in a null interval
102
*
103
*/
104
bool initFromItem(Item *args, interval_type int_type, String *str_value);
105
106
/**
107
* Adds this interval to a DRIZZLE_LTIME structure
108
*
109
* @param[in,out] ltime the interval will be added to ltime directly in the ltime structure
110
* @param[in] int_type the type of interval requested
111
* @retval true date was added and value stored properly
112
* @retval false result of addition is a null value
113
*/
114
bool addDate(DRIZZLE_TIME *ltime, interval_type int_type);
115
116
private:
117
118
/**
119
* The maximum number of text elements to extract into a temporal interval
120
*/
121
static const uint32_t MAX_STRING_ELEMENTS = 5;
122
123
/**
124
* Each of these corresponds to an 'interval_type'
125
*/
126
static const uint32_t NUM_YEAR_MONTH_STRING_ELEMENTS = 2;
127
static const uint32_t NUM_DAY_HOUR_STRING_ELEMENTS = 2;
128
static const uint32_t NUM_DAY_MICROSECOND_STRING_ELEMENTS = 5;
129
static const uint32_t NUM_DAY_MINUTE_STRING_ELEMENTS = 3;
130
static const uint32_t NUM_DAY_SECOND_STRING_ELEMENTS = 4;
131
static const uint32_t NUM_HOUR_MICROSECOND_STRING_ELEMENTS = 4;
132
static const uint32_t NUM_HOUR_MINUTE_STRING_ELEMENTS = 2;
133
static const uint32_t NUM_HOUR_SECOND_STRING_ELEMENTS = 3;
134
static const uint32_t NUM_MINUTE_MICROSECOND_STRING_ELEMENTS = 3;
135
static const uint32_t NUM_MINUTE_SECOND_STRING_ELEMENTS = 2;
136
static const uint32_t NUM_SECOND_MICROSECOND_STRING_ELEMENTS = 2;
137
138
/**
139
* @details
140
* Get a array of positive numbers from a string object.
141
* Each number is separated by 1 non digit character
142
* Return error if there is too many numbers.
143
* If there is too few numbers, assume that the numbers are left out
144
* from the high end. This allows one to give:
145
* DAY_TO_SECOND as "D MM:HH:SS", "MM:HH:SS" "HH:SS" or as seconds.
146
*
147
* @param[in] length: length of str
148
* @param[in] cs: charset of str
149
* @param[out] values: array of results
150
* @param[out] count: count of elements in result array
151
* @param transform_msec: if value is true we suppose
152
* that the last part of string value is microseconds
153
* and we should transform value to six digit value.
154
* For example, '1.1' -> '1.100000'
155
*/
156
bool getIntervalFromString(const char *str,
157
uint32_t length,
158
const CHARSET_INFO * const cs,
159
uint32_t count,
160
uint64_t *values,
161
bool transform_msec);
162
163
uint32_t year;
164
uint32_t month;
165
uint32_t day;
166
uint32_t hour;
167
uint64_t minute;
168
uint64_t second;
169
uint64_t second_part;
170
bool neg;
171
172
};
173
174
} /* end namespace drizzled */
Loggerhead is a web-based interface for Breezy
Version: 2.0.1