1 /*
2    Copyright (c) 2008, 2019, Oracle and/or its affiliates. All rights reserved.
3 
4    This program is free software; you can redistribute it and/or modify
5    it under the terms of the GNU General Public License, version 2.0,
6    as published by the Free Software Foundation.
7 
8    This program is also distributed with certain software (including
9    but not limited to OpenSSL) that is licensed under separate terms,
10    as designated in a particular file or component or in included license
11    documentation.  The authors of MySQL hereby grant you an additional
12    permission to link the program and your derivative works with the
13    separately licensed software that they have included with MySQL.
14 
15    This program is distributed in the hope that it will be useful,
16    but WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18    GNU General Public License, version 2.0, for more details.
19 
20    You should have received a copy of the GNU General Public License
21    along with this program; if not, write to the Free Software
22    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
23 
24 #ifndef _EVENT_PARSE_DATA_H_
25 #define _EVENT_PARSE_DATA_H_
26 
27 #include <stddef.h>
28 
29 #include "lex_string.h"
30 #include "my_dbug.h"
31 #include "my_inttypes.h"
32 #include "my_time.h"  // interval_type
33 
34 class Item;
35 class THD;
36 class sp_name;
37 
38 #define EVEX_GET_FIELD_FAILED -2
39 #define EVEX_BAD_PARAMS -5
40 #define EVEX_MICROSECOND_UNSUP -6
41 #define EVEX_MAX_INTERVAL_VALUE 1000000000L
42 
43 class Event_parse_data {
44  public:
45   /*
46     ENABLED = feature can function normally (is turned on)
47     SLAVESIDE_DISABLED = feature is turned off on slave
48     DISABLED = feature is turned off
49   */
50   enum enum_status { ENABLED = 1, DISABLED, SLAVESIDE_DISABLED };
51 
52   enum enum_on_completion {
53     /*
54       On CREATE EVENT, DROP is the DEFAULT as per the docs.
55       On ALTER  EVENT, "no change" is the DEFAULT.
56     */
57     ON_COMPLETION_DEFAULT = 0,
58     ON_COMPLETION_DROP,
59     ON_COMPLETION_PRESERVE
60   };
61 
62   int on_completion;
63   int status;
64   bool status_changed;
65   longlong originator;
66   /*
67     do_not_create will be set if STARTS time is in the past and
68     on_completion == ON_COMPLETION_DROP.
69   */
70   bool do_not_create;
71 
72   bool body_changed;
73 
74   LEX_CSTRING dbname;
75   LEX_CSTRING name;
76   LEX_STRING definer;  // combination of user and host
77   LEX_STRING comment;
78 
79   Item *item_starts;
80   Item *item_ends;
81   Item *item_execute_at;
82 
83   my_time_t starts;
84   my_time_t ends;
85   my_time_t execute_at;
86   bool starts_null;
87   bool ends_null;
88   bool execute_at_null;
89 
90   sp_name *identifier;
91   Item *item_expression;
92   longlong expression;
93   interval_type interval;
94 
95   bool check_parse_data(THD *thd);
96 
97   bool check_dates(THD *thd, int previous_on_completion);
98 
Event_parse_data()99   Event_parse_data()
100       : on_completion(Event_parse_data::ON_COMPLETION_DEFAULT),
101         status(Event_parse_data::ENABLED),
102         status_changed(false),
103         do_not_create(false),
104         body_changed(false),
105         item_starts(nullptr),
106         item_ends(nullptr),
107         item_execute_at(nullptr),
108         starts_null(true),
109         ends_null(true),
110         execute_at_null(true),
111         item_expression(nullptr),
112         expression(0) {
113     DBUG_TRACE;
114 
115     /* Actually in the parser STARTS is always set */
116     starts = ends = execute_at = 0;
117 
118     comment.str = nullptr;
119     comment.length = 0;
120 
121     return;
122   }
123 
~Event_parse_data()124   ~Event_parse_data() {}
125 
126  private:
127   void init_definer(THD *thd);
128 
129   void init_name(THD *thd, sp_name *spn);
130 
131   int init_execute_at(THD *thd);
132 
133   int init_interval(THD *thd);
134 
135   int init_starts(THD *thd);
136 
137   int init_ends(THD *thd);
138 
139   void report_bad_value(THD *thd, const char *item_name, Item *bad_item);
140 
141   void check_if_in_the_past(THD *thd, my_time_t ltime_utc);
142 
143   Event_parse_data(const Event_parse_data &); /* Prevent use of these */
144   void check_originator_id(THD *thd);
145   void operator=(Event_parse_data &);
146 };
147 #endif
148