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/*
   Copyright (c) 2008, 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 */

#ifndef _EVENT_PARSE_DATA_H_
#define _EVENT_PARSE_DATA_H_

#include "sql_alloc.h"

class Item;
class THD;
class sp_name;

#define EVEX_GET_FIELD_FAILED   -2
#define EVEX_BAD_PARAMS         -5
#define EVEX_MICROSECOND_UNSUP  -6
#define EVEX_MAX_INTERVAL_VALUE 1000000000L

class Event_parse_data : public Sql_alloc
{
public:
  /*
    ENABLED = feature can function normally (is turned on)
    SLAVESIDE_DISABLED = feature is turned off on slave
    DISABLED = feature is turned off
  */
  enum enum_status
  {
    ENABLED = 1,
    DISABLED,
    SLAVESIDE_DISABLED  
  };

  enum enum_on_completion
  {
    /*
      On CREATE EVENT, DROP is the DEFAULT as per the docs.
      On ALTER  EVENT, "no change" is the DEFAULT.
    */
    ON_COMPLETION_DEFAULT = 0,
    ON_COMPLETION_DROP,
    ON_COMPLETION_PRESERVE
  };

  int on_completion;
  int status;
  bool status_changed;
  uint32 originator;
  /*
    do_not_create will be set if STARTS time is in the past and
    on_completion == ON_COMPLETION_DROP.
  */
  bool do_not_create;

  bool body_changed;

  LEX_CSTRING dbname;
  LEX_CSTRING name;
  LEX_CSTRING definer;// combination of user and host
  LEX_CSTRING comment;

  Item* item_starts;
  Item* item_ends;
  Item* item_execute_at;

  my_time_t starts;
  my_time_t ends;
  my_time_t execute_at;
  bool starts_null;
  bool ends_null;
  bool execute_at_null;

  sp_name *identifier;
  Item* item_expression;
  longlong expression;
  interval_type interval;

  static Event_parse_data *
  new_instance(THD *thd);

  bool
  check_parse_data(THD *thd);

  bool
  check_dates(THD *thd, int previous_on_completion);

private:

  void
  init_definer(THD *thd);

  void
  init_name(THD *thd, sp_name *spn);

  int
  init_execute_at(THD *thd);

  int
  init_interval(THD *thd);

  int
  init_starts(THD *thd);

  int
  init_ends(THD *thd);

  Event_parse_data();
  ~Event_parse_data();

  void
  report_bad_value(const char *item_name, Item *bad_item);

  void
  check_if_in_the_past(THD *thd, my_time_t ltime_utc);

  Event_parse_data(const Event_parse_data &);	/* Prevent use of these */
  void check_originator_id(THD *thd);
  void operator=(Event_parse_data &);
};
#endif