- Introduce a new class Timestamp and move Timeval::trunc() to Timestamp.
Later new methods like round() will be added to Timestamp.
Add Field_timestamp::store_TIMESTAMP() and use it instead of
store_TIMEVAL() in Field_timestamp methods.
- Add data-type specific constructors for classes Time, Datetime
for numeric data types: Longlong_hybrid, double, my_decimal*.
Make old constructors (accepting Sec6) protected. It will make
the caller code simpler. Fix Field_xxx::store_TIME_with_warning()
and Field::store()in field.cc accordingly.
- Add a new constructor Datetime(THD *thd, const timeval &tv).
Move the code from Field_datetime::set_time() to this new
constructor. It will be much easier to reuse this code this way.
- Reorganize the code in static functions Field::do_field_temporal()
and Field_time::do_field_time(). Add separate functions
do_field_date() and do_field_datetime(). Modify
do_field_temporal() to accept a new date_mode_t parameter.
Reuse the new version of do_field_temporal() from all
type specific methods: do_field_time(), do_field_date(),
do_field_datetime().This will remove duplicate code for now.
Later, do_field_date() and do_field_datetime() will pass
different rounding flags.
- Add a new constructor:
Time(int *warn, bool neg, ulonglong hour,
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uint minute, const Sec6 &second);
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and move this code from Item_func_maketime::get_date():
bzero(ltime, sizeof(*ltime));
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ltime->time_type= MYSQL_TIMESTAMP_TIME;
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ltime->neg= hour.neg();
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if (hour.abs() <= TIME_MAX_HOUR)
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{
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ltime->hour= (uint) hour.abs();
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ltime->minute= (uint) minute;
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ltime->second= (uint) sec.sec();
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ltime->second_part= sec.usec();
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}
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to this new constructor. It will be easier to reuse this code this way.
Later, nanosecond rounding will be added to Item_func_maketime::get_date().
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