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143 lines
3.1 KiB
C++
143 lines
3.1 KiB
C++
#ifndef _EVENT_H_
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#define _EVENT_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; 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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class sp_name;
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class Event_parse_data;
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class Event_db_repository;
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class Event_queue;
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class Event_queue_element;
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class Event_scheduler;
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/* Return codes */
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enum enum_events_error_code
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{
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OP_OK= 0,
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OP_NOT_RUNNING,
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OP_CANT_KILL,
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OP_CANT_INIT,
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OP_DISABLED_EVENT,
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OP_LOAD_ERROR,
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OP_ALREADY_EXISTS
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};
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int
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sortcmp_lex_string(LEX_STRING s, LEX_STRING t, CHARSET_INFO *cs);
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class Events
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{
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public:
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/*
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Quite NOT the best practice and will be removed once
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Event_timed::drop() and Event_timed is fixed not do drop directly
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or other scheme will be found.
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*/
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friend class Event_queue_element;
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/* The order should match the order in opt_typelib */
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enum enum_opt_event_scheduler
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{
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EVENTS_OFF= 0,
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EVENTS_ON= 1,
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EVENTS_DISABLED= 5
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};
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static enum_opt_event_scheduler opt_event_scheduler;
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static TYPELIB opt_typelib;
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static TYPELIB var_typelib;
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bool
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init();
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void
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deinit();
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void
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init_mutexes();
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void
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destroy_mutexes();
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bool
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start_execution_of_events();
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bool
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stop_execution_of_events();
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bool
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is_execution_of_events_started();
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static Events *
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get_instance();
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bool
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create_event(THD *thd, Event_parse_data *parse_data, bool if_exists);
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bool
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update_event(THD *thd, Event_parse_data *parse_data, sp_name *rename_to);
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bool
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drop_event(THD *thd, LEX_STRING dbname, LEX_STRING name, bool if_exists,
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bool only_from_disk);
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void
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drop_schema_events(THD *thd, char *db);
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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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bool
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show_create_event(THD *thd, LEX_STRING dbname, LEX_STRING name);
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/* Needed for both SHOW CREATE EVENT and INFORMATION_SCHEMA */
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static int
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reconstruct_interval_expression(String *buf, interval_type interval,
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longlong expression);
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static int
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fill_schema_events(THD *thd, TABLE_LIST *tables, COND * /* cond */);
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void
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dump_internal_status();
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private:
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bool
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check_system_tables(THD *thd);
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/* Singleton DP is used */
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Events();
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~Events(){}
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/* Singleton instance */
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static Events singleton;
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Event_queue *event_queue;
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Event_scheduler *scheduler;
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Event_db_repository *db_repository;
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pthread_mutex_t LOCK_event_metadata;
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bool check_system_tables_error;
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/* Prevent use of these */
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Events(const Events &);
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void operator=(Events &);
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};
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#endif /* _EVENT_H_ */
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