1 /* 2 Copyright (c) 2013, 2017, 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 25 #ifndef TRIGGER_CHAIN_H_INCLUDED 26 #define TRIGGER_CHAIN_H_INCLUDED 27 28 #include "lex_string.h" 29 #include "sql/sql_list.h" // List 30 #include "sql/trigger_def.h" // enum_trigger_order_type 31 32 class Query_tables_list; 33 class THD; 34 class Trigger; 35 struct MEM_ROOT; 36 struct MY_BITMAP; 37 struct TABLE; 38 struct TABLE_LIST; 39 40 class Trigger_chain { 41 public: Trigger_chain()42 Trigger_chain() {} 43 44 ~Trigger_chain(); 45 /** 46 @return a reference to the list of triggers with the same 47 EVENT/ACTION_TIME assigned to the table. 48 */ get_trigger_list()49 List<Trigger> &get_trigger_list() { return m_triggers; } 50 51 bool add_trigger(MEM_ROOT *mem_root, Trigger *new_trigger, 52 enum_trigger_order_type ordering_clause, 53 const LEX_CSTRING &referenced_trigger_name); 54 55 bool add_trigger(MEM_ROOT *mem_root, Trigger *new_trigger); 56 57 bool execute_triggers(THD *thd); 58 59 void add_tables_and_routines(THD *thd, Query_tables_list *prelocking_ctx, 60 TABLE_LIST *table_list); 61 62 void mark_fields(TABLE *subject_table); 63 64 bool has_updated_trigger_fields(const MY_BITMAP *used_fields); 65 66 private: 67 /// List of triggers of this chain. 68 List<Trigger> m_triggers; 69 }; 70 71 #endif 72