Time_zone Class Reference

#include <tztime.h>

Inheritance diagram for Time_zone:

List of all members.

Public Member Functions
virtual my_time_t	TIME_to_gmt_sec (const MYSQL_TIME *t, my_bool *in_dst_time_gap) const =0
virtual void	gmt_sec_to_TIME (MYSQL_TIME *tmp, my_time_t t) const =0
void	gmt_sec_to_TIME (MYSQL_TIME *tmp, struct timeval tv)
virtual const String *	get_name () const =0
virtual	~Time_zone ()
Static Protected Member Functions
static void	adjust_leap_second (MYSQL_TIME *t)

---

Detailed Description

This class represents abstract time zone and provides basic interface for MYSQL_TIME <-> my_time_t conversion. Actual time zones which are specified by DB, or via offset or use system functions are its descendants.

---

Constructor & Destructor Documentation

virtual Time_zone::~Time_zone

(

)

[inline, virtual]

We need this only for surpressing warnings, objects of this type are allocated on MEM_ROOT and should not require destruction.

---

Member Function Documentation

void Time_zone::adjust_leap_second

(

MYSQL_TIME *

t

)

[inline, static, protected]

Convert leap seconds into non-leap

This function will convert the leap seconds added by the OS to non-leap seconds, e.g. 23:59:59, 23:59:60 -> 23:59:59, 00:00:01 ... This check is not checking for years on purpose : although it's not a complete check this way it doesn't require looking (and having installed) the leap seconds table.

Parameters:

[in,out]

broken

down time structure as filled in by the OS

virtual const String* Time_zone::get_name

(

)

const [pure virtual]

Because of constness of String returned by get_name() time zone name have to be already zeroended to be able to use String::ptr() instead of c_ptr().

Implemented in Time_zone_offset, Time_zone_db, Time_zone_utc, and Time_zone_system.

virtual void Time_zone::gmt_sec_to_TIME	(	MYSQL_TIME *	tmp,
		my_time_t	t
	)		const [pure virtual]

Converts time in my_time_t representation to local time in broken down MYSQL_TIME representation.

Implemented in Time_zone_offset, Time_zone_db, Time_zone_utc, and Time_zone_system.

void Time_zone::gmt_sec_to_TIME	(	MYSQL_TIME *	tmp,
		struct timeval	tv
	)		[inline]

Comverts "struct timeval" to local time in broken down MYSQL_TIME represendation.

virtual my_time_t Time_zone::TIME_to_gmt_sec	(	const MYSQL_TIME *	t,
		my_bool *	in_dst_time_gap
	)		const [pure virtual]

Converts local time in broken down MYSQL_TIME representation to my_time_t (UTC seconds since Epoch) represenation. Returns 0 in case of error. Sets in_dst_time_gap to true if date provided falls into spring time-gap (or lefts it untouched otherwise).

Implemented in Time_zone_offset, Time_zone_db, Time_zone_utc, and Time_zone_system.

---

The documentation for this class was generated from the following files:

• tztime.h
• tztime.cc