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WL#3337 (Event scheduler new architecture) Fourth cut of refactoring

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the parsing. Next step will be to refactor of usage of Event_timed 
during Events::create_event() and Events::update_event().

Disallow:
- CREATE EVENT ... DO CREATE EVENT ...;
- ALTER  EVENT ... DO CREATE EVENT ...;
- CREATE EVENT ... DO ALTER EVENT DO ....;
- CREATE PROCEDURE ... BEGIN CREATE EVENT ... END|

Allowed:
- CREATE EVENT ... DO DROP EVENT yyy;
- CREATE EVENT ... DO ALTER EVENT yyy;
  (the nested ALTER EVENT can have anything but DO clause)
- ALTER  EVENT ... DO ALTER EVENT yyy;
  (the nested ALTER EVENT can have anything but DO clause)
- ALTER  EVENT ... DO DROP EVENT yyy;
- CREATE PROCEDURE ... BEGIN ALTER EVENT ... END|
  (the nested ALTER EVENT can have anything but DO clause)
- CREATE PROCEDURE ... BEGIN DROP EVENT ... END|
This commit is contained in:
andrey@lmy004. 2006-06-27 13:15:40 +02:00
parent 4e0a752ff6
commit 0c439c9f76
6 changed files with 147 additions and 137 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
mysql-test/r/events.result
View File

@ -85,13 +85,25 @@ SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test event_starts_test root@localhost RECURRING NULL 20 SECOND # # ENABLED
DROP EVENT event_starts_test;
create table test_nested(a int);
create event e_43 on schedule every 1 second do set @a = 5;
set global event_scheduler = 1;
alter event e_43 do alter event e_43 do set @a = 4;
ERROR HY000: Recursivity of EVENT DDL statements is forbidden when body is present
alter event e_43 do
begin
alter event e_43 on schedule every 5 minute;
insert into test_nested values(1);
end|
set global event_scheduler = 1;
select db, name, body, status, interval_field, interval_value from mysql.event;
db name body status interval_field interval_value
events_test e_43 set @a = 4 ENABLED SECOND 1
events_test e_43 begin
alter event e_43 on schedule every 5 minute;
insert into test_nested values(1);
end ENABLED MINUTE 5
drop event e_43;
drop table test_nested;
"Let's check whether we can use non-qualified names"
create table non_qualif(a int);
create event non_qualif_ev on schedule every 10 minute do insert into non_qualif values (800219);
@ -358,7 +370,7 @@ root localhost events_test Connect User lock select get_lock("test_lock2_1", 20)
drop event закачка21;
create table t_16 (s1 int);
create trigger t_16_bi before insert on t_16 for each row create event e_16 on schedule every 1 second do set @a=5;
ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
ERROR HY000: Recursivity of EVENT DDL statements is forbidden when body is present
drop table t_16;
create event white_space
on schedule every 10 hour

13
mysql-test/r/events_bugs.result
View File

@ -17,18 +17,7 @@ DROP EVENT ДОЛЕН_регистър_утф8;
SET NAMES latin1;
set @a=3;
CREATE PROCEDURE p_16 () CREATE EVENT e_16 ON SCHEDULE EVERY @a SECOND DO SET @a=5;
call p_16();
"Here we used to crash!"
call p_16();
ERROR HY000: Event 'e_16' already exists
call p_16();
ERROR HY000: Event 'e_16' already exists
DROP EVENT e_16;
CALL p_16();
CALL p_16();
ERROR HY000: Event 'e_16' already exists
DROP PROCEDURE p_16;
DROP EVENT e_16;
ERROR HY000: Recursivity of EVENT DDL statements is forbidden when body is present
create event e_55 on schedule at 99990101000000 do drop table t;
ERROR HY000: Incorrect AT value: '99990101000000'
create event e_55 on schedule every 10 hour starts 99990101000000 do drop table t;

17
mysql-test/t/events.test
View File

@ -81,14 +81,23 @@ SHOW EVENTS;
DROP EVENT event_starts_test;
#
#
create table test_nested(a int);
create event e_43 on schedule every 1 second do set @a = 5;
set global event_scheduler = 1;
--sleep 2
--error 1562
alter event e_43 do alter event e_43 do set @a = 4;
--sleep 2
delimiter |;
alter event e_43 do
begin
alter event e_43 on schedule every 5 minute;
insert into test_nested values(1);
end|
delimiter ;|
set global event_scheduler = 1;
--sleep 1
select db, name, body, status, interval_field, interval_value from mysql.event;
drop event e_43;
--sleep 1
drop table test_nested;
--echo "Let's check whether we can use non-qualified names"
create table non_qualif(a int);
@ -315,7 +324,7 @@ drop event закачка21;
# Bug #16410 Events: CREATE EVENT is legal in a CREATE TRIGGER statement
#
create table t_16 (s1 int);
--error 1422
--error 1562
create trigger t_16_bi before insert on t_16 for each row create event e_16 on schedule every 1 second do set @a=5;
drop table t_16;
#

13
mysql-test/t/events_bugs.test
View File

@ -30,19 +30,8 @@ SET NAMES latin1;
# START - BUG#16408: Events: crash for an event in a procedure
#
set @a=3;
--error 1562
CREATE PROCEDURE p_16 () CREATE EVENT e_16 ON SCHEDULE EVERY @a SECOND DO SET @a=5;
call p_16();
--echo "Here we used to crash!"
--error ER_EVENT_ALREADY_EXISTS
call p_16();
--error ER_EVENT_ALREADY_EXISTS
call p_16();
DROP EVENT e_16;
CALL p_16();
--error ER_EVENT_ALREADY_EXISTS
CALL p_16();
DROP PROCEDURE p_16;
DROP EVENT e_16;
#
# END - BUG#16408: Events: crash for an event in a procedure
#

3
sql/share/errmsg.txt
View File

@ -5839,3 +5839,6 @@ ER_CANT_ACTIVATE_LOG
eng "Cannot activate '%-.64s' log."
ER_RBR_NOT_AVAILABLE
eng "The server was not built with row-based replication"
ER_EVENT_RECURSIVITY_FORBIDDEN
eng "Recursivity of EVENT DDL statements is forbidden when body is present"

222
sql/sql_yacc.yy
View File

@ -880,7 +880,8 @@ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
sp_c_chistics sp_a_chistics sp_chistic sp_c_chistic xa
load_data opt_field_or_var_spec fields_or_vars opt_load_data_set_spec
definer view_replace_or_algorithm view_replace view_algorithm_opt
view_algorithm view_or_trigger_or_sp view_or_trigger_or_sp_tail
view_algorithm view_or_trigger_or_sp_or_event
view_or_trigger_or_sp_or_event_tail
view_suid view_tail view_list_opt view_list view_select
view_check_option trigger_tail sp_tail
install uninstall partition_entry binlog_base64_event
@ -1257,78 +1258,13 @@ create:
lex->name=$4.str;
lex->create_info.options=$3;
}
| CREATE EVENT_SYM opt_if_not_exists sp_name
/*
BE CAREFUL when you add a new rule to update the block where
YYTHD->client_capabilities is set back to original value
*/
{
LEX *lex=Lex;
if (lex->et)
{
/*
Recursive events are not possible because recursive SPs
are not also possible. lex->sp_head is not stacked.
*/
// ToDo Andrey : Change the error message
my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "EVENT");
YYABORT;
}
lex->create_info.options= $3;
if (!(lex->et= new(YYTHD->mem_root) Event_timed())) // implicitly calls Event_timed::init()
YYABORT;
if (!(lex->event_parse_data= Event_parse_data::new_instance(YYTHD)))
YYABORT;
/*
We have to turn of CLIENT_MULTI_QUERIES while parsing a
stored procedure, otherwise yylex will chop it into pieces
at each ';'.
*/
$<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
YYTHD->client_capabilities &= (~CLIENT_MULTI_QUERIES);
lex->event_parse_data->identifier= $4;
if (!lex->et_compile_phase)
{
lex->et->init_name(YYTHD, $4);
lex->et->init_definer(YYTHD);
}
}
ON SCHEDULE_SYM ev_schedule_time
opt_ev_on_completion
opt_ev_status
opt_ev_comment
DO_SYM ev_sql_stmt
{
/*
Restore flag if it was cleared above
$1 - CREATE
$2 - EVENT_SYM
$3 - opt_if_not_exists
$4 - sp_name
$5 - the block above
*/
YYTHD->client_capabilities |= $<ulong_num>5;
/*
sql_command is set here because some rules in ev_sql_stmt
can overwrite it
*/
Lex->sql_command= SQLCOM_CREATE_EVENT;
}
| CREATE
{
Lex->create_view_mode= VIEW_CREATE_NEW;
Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED;
Lex->create_view_suid= TRUE;
}
view_or_trigger_or_sp
view_or_trigger_or_sp_or_event
{}
| CREATE USER clear_privileges grant_list
{
@ -1347,6 +1283,72 @@ create:
;
event_tail:
EVENT_SYM opt_if_not_exists sp_name
/*
BE CAREFUL when you add a new rule to update the block where
YYTHD->client_capabilities is set back to original value
*/
{
LEX *lex=Lex;
if (lex->et)
{
/*
Recursive CREATE EVENT statement are not possible because
recursive SPs are not also possible. lex->sp_head is not stacked.
*/
my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "EVENT");
YYABORT;
}
lex->create_info.options= $2;
if (!(lex->et= new(YYTHD->mem_root) Event_timed())) // implicitly calls Event_timed::init()
YYABORT;
if (!(lex->event_parse_data= Event_parse_data::new_instance(YYTHD)))
YYABORT;
/*
We have to turn of CLIENT_MULTI_QUERIES while parsing a
stored procedure, otherwise yylex will chop it into pieces
at each ';'.
*/
$<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
YYTHD->client_capabilities &= (~CLIENT_MULTI_QUERIES);
lex->event_parse_data->identifier= $3;
if (!lex->et_compile_phase)
{
lex->et->init_name(YYTHD, $3);
lex->et->init_definer(YYTHD);
}
}
ON SCHEDULE_SYM ev_schedule_time
opt_ev_on_completion
opt_ev_status
opt_ev_comment
DO_SYM ev_sql_stmt
{
/*
Restore flag if it was cleared above
$1 - EVENT_SYM
$2 - opt_if_not_exists
$3 - sp_name
$4 - the block above
*/
YYTHD->client_capabilities |= $<ulong_num>4;
/*
sql_command is set here because some rules in ev_sql_stmt
can overwrite it
*/
Lex->sql_command= SQLCOM_CREATE_EVENT;
}
ev_schedule_time: EVERY_SYM expr interval
{
Lex->event_parse_data->item_expression= $2;
@ -1517,25 +1519,41 @@ ev_sql_stmt:
LEX *lex= Lex;
sp_head *sp;
$<sphead>$= lex->sphead;
if (!lex->sphead)
/*
This stops the following :
- CREATE EVENT ... DO CREATE EVENT ...;
- ALTER EVENT ... DO CREATE EVENT ...;
- CREATE EVENT ... DO ALTER EVENT DO ....;
- CREATE PROCEDURE ... BEGIN CREATE EVENT ... END|
This allows:
- CREATE EVENT ... DO DROP EVENT yyy;
- CREATE EVENT ... DO ALTER EVENT yyy;
(the nested ALTER EVENT can have anything but DO clause)
- ALTER EVENT ... DO ALTER EVENT yyy;
(the nested ALTER EVENT can have anything but DO clause)
- ALTER EVENT ... DO DROP EVENT yyy;
- CREATE PROCEDURE ... BEGIN ALTER EVENT ... END|
(the nested ALTER EVENT can have anything but DO clause)
- CREATE PROCEDURE ... BEGIN DROP EVENT ... END|
*/
if (lex->sphead)
{
if (!(sp= new sp_head()))
YYABORT;
sp->reset_thd_mem_root(YYTHD);
sp->init(lex);
sp->m_type= TYPE_ENUM_PROCEDURE;
lex->sphead= sp;
bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
lex->sphead->m_chistics= &lex->sp_chistics;
lex->sphead->m_body_begin= lex->ptr;
my_error(ER_EVENT_RECURSIVITY_FORBIDDEN, MYF(0));
YYABORT;
}
if (!(lex->sphead= new sp_head()))
YYABORT;
lex->sphead->reset_thd_mem_root(YYTHD);
lex->sphead->init(lex);
lex->sphead->m_type= TYPE_ENUM_PROCEDURE;
bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
lex->sphead->m_chistics= &lex->sp_chistics;
lex->sphead->m_body_begin= lex->ptr;
Lex->event_parse_data->body_begin= lex->ptr;
@ -1546,18 +1564,15 @@ ev_sql_stmt:
{
LEX *lex=Lex;
if (!$<sphead>1)
{
sp_head *sp= lex->sphead;
// return back to the original memory root ASAP
sp->init_strings(YYTHD, lex, NULL);
sp->restore_thd_mem_root(YYTHD);
// return back to the original memory root ASAP
lex->sphead->init_strings(YYTHD, lex, NULL);
lex->sphead->restore_thd_mem_root(YYTHD);
lex->sp_chistics.suid= SP_IS_SUID;//always the definer!
lex->sp_chistics.suid= SP_IS_SUID;//always the definer!
lex->et->sphead= lex->sphead;
lex->sphead= NULL;
lex->et->sphead= lex->sphead;
lex->sphead= NULL;
}
Lex->event_parse_data->init_body(YYTHD);
if (!lex->et_compile_phase)
{
@ -4738,16 +4753,7 @@ alter:
LEX *lex=Lex;
Event_timed *et;
if (lex->et)
{
/*
Recursive events are not possible because recursive SPs
are not also possible. lex->sp_head is not stacked.
*/
my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "EVENT");
YYABORT;
}
lex->spname= 0;//defensive programming
lex->spname= NULL;
if (!(Lex->event_parse_data= Event_parse_data::new_instance(YYTHD)))
YYABORT;
@ -10767,20 +10773,22 @@ subselect_end:
**************************************************************************/
view_or_trigger_or_sp:
definer view_or_trigger_or_sp_tail
view_or_trigger_or_sp_or_event:
definer view_or_trigger_or_sp_or_event_tail
{}
| view_replace_or_algorithm definer view_tail
{}
;
view_or_trigger_or_sp_tail:
view_or_trigger_or_sp_or_event_tail:
view_tail
{}
| trigger_tail
{}
| sp_tail
{}
| event_tail
{}
;
/**************************************************************************