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BitKeeper/etc/ignore: auto-union BitKeeper/etc/logging_ok: auto-union BitKeeper/triggers/post-commit: Auto merged Docs/Support/texi2html: Auto merged Makefile.am: Auto merged client/Makefile.am: Auto merged client/mysql.cc: Auto merged client/mysqldump.c: Auto merged include/my_base.h: Auto merged include/my_global.h: Auto merged include/my_pthread.h: Auto merged include/my_sys.h: Auto merged include/my_time.h: Auto merged include/mysql.h: Auto merged include/mysql_com.h: Auto merged innobase/buf/buf0buf.c: Auto merged innobase/include/row0mysql.h: Auto merged innobase/row/row0sel.c: Auto merged libmysql/libmysql.c: Auto merged libmysqld/examples/Makefile.am: Auto merged myisam/mi_check.c: Auto merged mysql-test/include/ps_modify.inc: Auto merged mysql-test/install_test_db.sh: Auto merged mysql-test/r/alter_table.result: Auto merged mysql-test/r/auto_increment.result: Auto merged mysql-test/r/bdb.result: Auto merged mysql-test/r/ctype_latin1_de.result: Auto merged mysql-test/r/ctype_recoding.result: Auto merged mysql-test/r/fulltext.result: Auto merged mysql-test/r/func_gconcat.result: Auto merged mysql-test/r/func_group.result: Auto merged mysql-test/r/func_if.result: Auto merged mysql-test/t/derived.test: Auto merged mysql-test/t/insert.test: merge with 4.1 Fixed test case to not use 'if exists' when it shouldn't mysql-test/t/range.test: merge with 4.1 Added missing drop table sql/ha_ndbcluster.cc: merge with 4.1 Simple optimization: use max() instead of ? : sql/item_func.cc: merge with 4.1 (Added back old variable names for easier merges) sql/opt_range.cc: merge with 4.1 Removed argument 'parent_alloc' from QUICK_RANGE_SELECT as this was not used Added assert if using QUICK_GROUP_MIN_MAX_SELECT with parent_alloc as the init() function can't handle this Changed back get_quick_select_for_ref() to use it's own alloc root becasue this function may be called several times for one query sql/sql_handler.cc: merge with 4.1 change variable 'err' to 'error' as same function had a label named 'err' sql/sql_update.cc: Use multi-update code from 5.0 instead of 4.1 We will fix the locking code shortly in 5.0 to be faster than in 4.1
102 lines
3.3 KiB
C++
102 lines
3.3 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 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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/*
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Check if we have pointer to the beggining of list of implictly used
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time zone tables 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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(*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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/*
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Maximum length of time zone name that we support
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(Time zone name is char(64) in db)
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*/
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#define MAX_TIME_ZONE_NAME_LENGTH 72
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#endif /* !defined(TESTTIME) && !defined(TZINFO2SQL) */
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