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c766efdc5d
of SET ONE_SHOT; storing tz info directly in event (if this info is needed), it's now allowed to have different global tz on master and slave.
101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
/* Copyright (C) 2004 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifdef __GNUC__
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#pragma interface /* gcc class interface */
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#endif
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#if !defined(TESTTIME) && !defined(TZINFO2SQL)
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/*
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This class represents abstract time zone and provides
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basic interface for TIME <-> my_time_t conversion.
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Actual time zones which are specified by DB, or via offset
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or use system functions are its descendants.
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*/
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class Time_zone: public Sql_alloc
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{
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public:
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/*
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Converts local time in broken down TIME representation to
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my_time_t (UTC seconds since Epoch) represenation.
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Returns 0 in case of error. Sets in_dst_time_gap to true if date provided
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falls into spring time-gap (or lefts it untouched otherwise).
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*/
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virtual my_time_t TIME_to_gmt_sec(const TIME *t,
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bool *in_dst_time_gap) const = 0;
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/*
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Converts time in my_time_t representation to local time in
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broken down TIME representation.
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*/
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virtual void gmt_sec_to_TIME(TIME *tmp, my_time_t t) const = 0;
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/*
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Because of constness of String returned by get_name() time zone name
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have to be already zeroended to be able to use String::ptr() instead
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of c_ptr().
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*/
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virtual const String * get_name() const = 0;
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/*
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We need this only for surpressing warnings, objects of this type are
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allocated on MEM_ROOT and should not require destruction.
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*/
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virtual ~Time_zone() {};
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};
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extern Time_zone * my_tz_UTC;
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extern Time_zone * my_tz_SYSTEM;
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extern TABLE_LIST * my_tz_get_table_list(THD *thd, TABLE_LIST ***global_next_ptr);
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extern Time_zone * my_tz_find(const String *name, TABLE_LIST *tz_tables);
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extern Time_zone * my_tz_find_with_opening_tz_tables(THD *thd, const String *name);
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extern my_bool my_tz_init(THD *org_thd, const char *default_tzname, my_bool bootstrap);
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extern void my_tz_free();
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extern TABLE_LIST fake_time_zone_tables_list;
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/*
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Check if we have pointer to the begining of list of implicitly used time
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zone tables, set SELECT_ACL for them and fast-forward to its end.
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SYNOPSIS
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my_tz_check_n_skip_implicit_tables()
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table - (in/out) pointer to element of table list to check
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tz_tables - list of implicitly used time zone tables received
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from my_tz_get_table_list() function.
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NOTE
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This function relies on my_tz_get_table_list() implementation.
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RETURN VALUE
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TRUE - if table points to the beggining of tz_tables list
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FALSE - otherwise.
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*/
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inline bool my_tz_check_n_skip_implicit_tables(TABLE_LIST **table,
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TABLE_LIST *tz_tables)
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{
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if (*table == tz_tables)
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{
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for (int i= 0; i < 4; i++)
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(*table)[i].grant.privilege= SELECT_ACL;
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(*table)+= 3;
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return TRUE;
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}
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return FALSE;
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}
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#endif /* !defined(TESTTIME) && !defined(TZINFO2SQL) */
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