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6d8f6b5bfd
BUG#26429: SHOW CREATE EVENT is incorrect for an event that
STARTS NOW()
BUG#26431: Impossible to re-create an event from backup if its
STARTS clause is in the past
WL#3698: Events: execution in local time zone
The problem was that local times specified by the user in AT, STARTS
and ENDS of CREATE EVENT/ALTER EVENT statement were converted to UTC,
and the original time zone was forgotten. This way, event scheduler
couldn't honor Daylight Saving Time shifts, and times shown to the
user were also in UTC. Additionally, CREATE EVENT didn't allow times
in the past, thus preventing straightforward event restoration from
old backups.
This patch reworks event scheduler time computations, performing them
in the time zone associated with the event. Also it allows times to
be in the past.
The patch adds time_zone column to mysql.event table.
NOTE: The patch is almost final, but the bug#9953 should be pushed
first.
102 lines
2.8 KiB
C++
102 lines
2.8 KiB
C++
#ifndef _EVENT_DB_REPOSITORY_H_
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#define _EVENT_DB_REPOSITORY_H_
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/* Copyright (C) 2004-2006 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; version 2 of the License.
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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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#define EVEX_OPEN_TABLE_FAILED -1
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enum enum_events_table_field
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{
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ET_FIELD_DB = 0,
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ET_FIELD_NAME,
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ET_FIELD_BODY,
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ET_FIELD_DEFINER,
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ET_FIELD_EXECUTE_AT,
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ET_FIELD_INTERVAL_EXPR,
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ET_FIELD_TRANSIENT_INTERVAL,
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ET_FIELD_CREATED,
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ET_FIELD_MODIFIED,
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ET_FIELD_LAST_EXECUTED,
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ET_FIELD_STARTS,
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ET_FIELD_ENDS,
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ET_FIELD_STATUS,
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ET_FIELD_ON_COMPLETION,
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ET_FIELD_SQL_MODE,
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ET_FIELD_COMMENT,
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ET_FIELD_TIME_ZONE,
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ET_FIELD_COUNT /* a cool trick to count the number of fields :) */
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};
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int
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events_table_index_read_for_db(THD *thd, TABLE *schema_table,
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TABLE *event_table);
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int
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events_table_scan_all(THD *thd, TABLE *schema_table, TABLE *event_table);
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class Event_basic;
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class Event_parse_data;
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class Event_db_repository
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{
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public:
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Event_db_repository(){}
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bool
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create_event(THD *thd, Event_parse_data *parse_data, my_bool create_if_not);
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bool
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update_event(THD *thd, Event_parse_data *parse_data, LEX_STRING *new_dbname,
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LEX_STRING *new_name);
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bool
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drop_event(THD *thd, LEX_STRING db, LEX_STRING name, bool drop_if_exists);
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void
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drop_schema_events(THD *thd, LEX_STRING schema);
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bool
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find_named_event(THD *thd, LEX_STRING db, LEX_STRING name, TABLE *table);
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bool
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load_named_event(THD *thd, LEX_STRING dbname, LEX_STRING name, Event_basic *et);
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int
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open_event_table(THD *thd, enum thr_lock_type lock_type, TABLE **table);
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int
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fill_schema_events(THD *thd, TABLE_LIST *tables, const char *db);
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private:
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void
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drop_events_by_field(THD *thd, enum enum_events_table_field field,
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LEX_STRING field_value);
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bool
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index_read_for_db_for_i_s(THD *thd, TABLE *schema_table, TABLE *event_table,
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const char *db);
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bool
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table_scan_all_for_i_s(THD *thd, TABLE *schema_table, TABLE *event_table);
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static bool
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check_system_tables(THD *thd);
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/* Prevent use of these */
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Event_db_repository(const Event_db_repository &);
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void operator=(Event_db_repository &);
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};
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#endif /* _EVENT_DB_REPOSITORY_H_ */
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