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#ifndef _EVENT_DB_REPOSITORY_H_
#define _EVENT_DB_REPOSITORY_H_
/* Copyright (c) 2006, 2011, Oracle and/or its affiliates.

This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA
*/

/**
  @addtogroup Event_Scheduler
  @{

@file event_db_repository.h

Data Dictionary related operations of Event Scheduler.

This is a private header file of Events module. Please do not include it
  directly. All public declarations of Events module should be stored in
  events.h and event_data_objects.h.
*/

enum enum_events_table_field
{
  ET_FIELD_DB = 0, 
  ET_FIELD_NAME,
  ET_FIELD_BODY,
  ET_FIELD_DEFINER,
  ET_FIELD_EXECUTE_AT,
  ET_FIELD_INTERVAL_EXPR,
  ET_FIELD_TRANSIENT_INTERVAL,
  ET_FIELD_CREATED,
  ET_FIELD_MODIFIED,
  ET_FIELD_LAST_EXECUTED,
  ET_FIELD_STARTS,
  ET_FIELD_ENDS,
  ET_FIELD_STATUS,
  ET_FIELD_ON_COMPLETION,
  ET_FIELD_SQL_MODE,
  ET_FIELD_COMMENT,
  ET_FIELD_ORIGINATOR,
  ET_FIELD_TIME_ZONE,
  ET_FIELD_CHARACTER_SET_CLIENT,
  ET_FIELD_COLLATION_CONNECTION,
  ET_FIELD_DB_COLLATION,
  ET_FIELD_BODY_UTF8,
  ET_FIELD_COUNT /* a cool trick to count the number of fields :) */
};

int
events_table_index_read_for_db(THD *thd, TABLE *schema_table,
                               TABLE *event_table);

int
events_table_scan_all(THD *thd, TABLE *schema_table, TABLE *event_table);

class Event_basic;
class Event_parse_data;

class Event_db_repository
{
public:
  Event_db_repository() = default;

bool
  create_event(THD *thd, Event_parse_data *parse_data,
               bool *event_already_exists);
  bool
  update_event(THD *thd, Event_parse_data *parse_data, LEX_CSTRING *new_dbname,
               LEX_CSTRING *new_name);

bool
  drop_event(THD *thd, const LEX_CSTRING *db, const LEX_CSTRING *name,
             bool drop_if_exists);

void
  drop_schema_events(THD *thd, const LEX_CSTRING *schema);

bool
  find_named_event(const LEX_CSTRING *db, const LEX_CSTRING *name,
                   TABLE *table);

bool
  load_named_event(THD *thd, const LEX_CSTRING *dbname,
                   const LEX_CSTRING *name,
                   Event_basic *et);

static bool
  open_event_table(THD *thd, enum thr_lock_type lock_type, TABLE **table);

bool
  fill_schema_events(THD *thd, TABLE_LIST *tables, const char *db);

bool
  update_timing_fields_for_event(THD *thd,
                                 const LEX_CSTRING *event_db_name,
                                 const LEX_CSTRING *event_name,
                                 my_time_t last_executed,
                                 ulonglong status);
public:
  static bool
  check_system_tables(THD *thd);
private:
  bool
  index_read_for_db_for_i_s(THD *thd, TABLE *schema_table, TABLE *event_table,
                            const char *db);

bool
  table_scan_all_for_i_s(THD *thd, TABLE *schema_table, TABLE *event_table);

private:
  /* Prevent use of these */
  Event_db_repository(const Event_db_repository &);
  void operator=(Event_db_repository &);
};

/**
  @} (End of group Event_Scheduler)
*/
#endif /* _EVENT_DB_REPOSITORY_H_ */

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