Method check_n_load

sql/sql_trigger.cc:1716–2066

*/

bool Table_triggers_list::check_n_load(THD *thd, const LEX_CSTRING *db,
                                       const LEX_CSTRING *table_name,
                                       TABLE *table,
                                       bool names_only)
{
  char path_buff[FN_REFLEN];
  LEX_CSTRING path;
  File_parser *parser;
  LEX_CSTRING save_db;
  DBUG_ENTER("Table_triggers_list::check_n_load");

  path.length= build_table_filename(path_buff, FN_REFLEN - 1,
                                    db->str, table_name->str, TRG_EXT, 0);
  path.str= path_buff;

  // QQ: should we analyze errno somehow ?
  if (access(path_buff, F_OK))
    DBUG_RETURN(0);

  /* File exists so we got to load triggers */

  if ((parser= sql_parse_prepare(&path, &table->mem_root, 1)))
  {
    if (is_equal(&triggers_file_type, parser->type()))
    {
      Handle_old_incorrect_sql_modes_hook sql_modes_hook(path.str);
      LEX_CSTRING *trg_create_str, *trg_sql_path;
      ulonglong *trg_sql_mode, *trg_create_time;
      Trigger *trigger;
      Table_triggers_list *trigger_list=
        new (&table->mem_root) Table_triggers_list(table);
      if (unlikely(!trigger_list))
        goto error;

      if (parser->parse((uchar*)trigger_list, &table->mem_root,
                        triggers_file_parameters,
                        TRG_NUM_REQUIRED_PARAMETERS,
                        &sql_modes_hook))
        goto error;

      List_iterator_fast<LEX_CSTRING> it(trigger_list->definitions_list);

      if (!trigger_list->definitions_list.is_empty() &&
          (trigger_list->client_cs_names.is_empty() ||
           trigger_list->connection_cl_names.is_empty() ||
           trigger_list->db_cl_names.is_empty()))
      {
        /* We will later use the current character sets */
        push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
                            ER_TRG_NO_CREATION_CTX,
                            ER_THD(thd, ER_TRG_NO_CREATION_CTX),
                            db->str,
                            table_name->str);
      }

      table->triggers= trigger_list;
      status_var_increment(thd->status_var.feature_trigger);