trigger_chain.h

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/*
   Copyright (c) 2013, 2022, Oracle and/or its affiliates.
 
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   it under the terms of the GNU General Public License, version 2.0,
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.
 
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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/
 
#ifndef TRIGGER_CHAIN_H_INCLUDED
#define TRIGGER_CHAIN_H_INCLUDED
 
#include "lex_string.h"
#include "sql/sql_list.h"     // List
#include "sql/trigger_def.h"  // enum_trigger_order_type
 
class Query_tables_list;
class THD;
class Trigger;
struct MEM_ROOT;
struct MY_BITMAP;
struct TABLE;
class Table_ref;
 
class Trigger_chain {
 public:
  Trigger_chain() = default;
 
  ~Trigger_chain();
  /**
    @return a reference to the list of triggers with the same
    EVENT/ACTION_TIME assigned to the table.
  */
  List<Trigger> &get_trigger_list() { return m_triggers; }
 
  bool add_trigger(MEM_ROOT *mem_root, Trigger *new_trigger,
                   enum_trigger_order_type ordering_clause,
                   const LEX_CSTRING &referenced_trigger_name);
 
  bool add_trigger(MEM_ROOT *mem_root, Trigger *new_trigger);
 
  bool execute_triggers(THD *thd);
 
  void add_tables_and_routines(THD *thd, Query_tables_list *prelocking_ctx,
                               Table_ref *table_list);
 
  void mark_fields(TABLE *subject_table);
 
  bool has_updated_trigger_fields(const MY_BITMAP *used_fields);
 
 private:
  /// List of triggers of this chain.
  List<Trigger> m_triggers;
};
 
#endif