diff options
Diffstat (limited to 'sql/sql_trigger.cc')
| -rw-r--r-- | sql/sql_trigger.cc | 44 |
1 files changed, 42 insertions, 2 deletions
diff --git a/sql/sql_trigger.cc b/sql/sql_trigger.cc index 28d7dc0bb9d..55744631210 100644 --- a/sql/sql_trigger.cc +++ b/sql/sql_trigger.cc @@ -1024,8 +1024,15 @@ bool Table_triggers_list::check_n_load(THD *thd, const char *db, } /* - Let us bind Item_trigger_field objects representing access to fields - in old/new versions of row in trigger to Field objects in table being + Gather all Item_trigger_field objects representing access to fields + in old/new versions of row in trigger into lists containing all such + objects for the triggers with same action and timing. + */ + triggers->trigger_fields[lex.trg_chistics.event] + [lex.trg_chistics.action_time]= + (Item_trigger_field *)(lex.trg_table_fields.first); + /* + Also let us bind these objects to Field objects in table being opened. We ignore errors here, because if even something is wrong we still @@ -1536,6 +1543,39 @@ bool Table_triggers_list::process_triggers(THD *thd, trg_event_type event, /* + Mark fields of subject table which we read/set in its triggers as such. + + SYNOPSIS + mark_fields_used() + thd Current thread context + event Type of event triggers for which we are going to inspect + + DESCRIPTION + This method marks fields of subject table which are read/set in its + triggers as such (by setting Field::query_id equal to THD::query_id) + and thus informs handler that values for these fields should be + retrieved/stored during execution of statement. +*/ + +void Table_triggers_list::mark_fields_used(THD *thd, trg_event_type event) +{ + int action_time; + Item_trigger_field *trg_field; + + for (action_time= 0; action_time < (int)TRG_ACTION_MAX; action_time++) + { + for (trg_field= trigger_fields[event][action_time]; trg_field; + trg_field= trg_field->next_trg_field) + { + /* We cannot mark fields which does not present in table. */ + if (trg_field->field_idx != (uint)-1) + table->field[trg_field->field_idx]->query_id = thd->query_id; + } + } +} + + +/* Trigger BUG#14090 compatibility hook SYNOPSIS |