1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540
|
/*
Copyright (c) 2005, 2010, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#define MYSQL_LEX 1
#include <my_global.h> /* NO_EMBEDDED_ACCESS_CHECKS */
#include "sql_priv.h"
#include "unireg.h"
#include "sql_parse.h" // parse_sql
#include "strfunc.h" // find_string_in_array
#include "sql_db.h" // get_default_db_collation
#include "sql_time.h" // interval_type_to_name,
// date_add_interval,
// calc_time_diff
#include "tztime.h" // my_tz_find, my_tz_OFFSET0, struct Time_zone
#include "sql_acl.h" // EVENT_ACL, SUPER_ACL
#include "sp.h" // load_charset, load_collation
#include "events.h"
#include "event_data_objects.h"
#include "event_db_repository.h"
#include "sp_head.h"
#include "sql_show.h" // append_definer, append_identifier
/**
@addtogroup Event_Scheduler
@{
*/
/*************************************************************************/
/**
Event_creation_ctx -- creation context of events.
*/
class Event_creation_ctx :public Stored_program_creation_ctx,
public Sql_alloc
{
public:
static bool load_from_db(THD *thd,
MEM_ROOT *event_mem_root,
const char *db_name,
const char *event_name,
TABLE *event_tbl,
Stored_program_creation_ctx **ctx);
public:
virtual Stored_program_creation_ctx *clone(MEM_ROOT *mem_root)
{
return new (mem_root)
Event_creation_ctx(m_client_cs, m_connection_cl, m_db_cl);
}
protected:
virtual Object_creation_ctx *create_backup_ctx(THD *thd) const
{
/*
We can avoid usual backup/restore employed in stored programs since we
know that this is a top level statement and the worker thread is
allocated exclusively to execute this event.
*/
return NULL;
}
private:
Event_creation_ctx(CHARSET_INFO *client_cs,
CHARSET_INFO *connection_cl,
CHARSET_INFO *db_cl)
: Stored_program_creation_ctx(client_cs, connection_cl, db_cl)
{ }
};
/**************************************************************************
Event_creation_ctx implementation.
**************************************************************************/
bool
Event_creation_ctx::load_from_db(THD *thd,
MEM_ROOT *event_mem_root,
const char *db_name,
const char *event_name,
TABLE *event_tbl,
Stored_program_creation_ctx **ctx)
{
/* Load character set/collation attributes. */
CHARSET_INFO *client_cs;
CHARSET_INFO *connection_cl;
CHARSET_INFO *db_cl;
bool invalid_creation_ctx= FALSE;
if (load_charset(event_mem_root,
event_tbl->field[ET_FIELD_CHARACTER_SET_CLIENT],
thd->variables.character_set_client,
&client_cs))
{
sql_print_warning("Event '%s'.'%s': invalid value "
"in column mysql.event.character_set_client.",
(const char *) db_name,
(const char *) event_name);
invalid_creation_ctx= TRUE;
}
if (load_collation(event_mem_root,
event_tbl->field[ET_FIELD_COLLATION_CONNECTION],
thd->variables.collation_connection,
&connection_cl))
{
sql_print_warning("Event '%s'.'%s': invalid value "
"in column mysql.event.collation_connection.",
(const char *) db_name,
(const char *) event_name);
invalid_creation_ctx= TRUE;
}
if (load_collation(event_mem_root,
event_tbl->field[ET_FIELD_DB_COLLATION],
NULL,
&db_cl))
{
sql_print_warning("Event '%s'.'%s': invalid value "
"in column mysql.event.db_collation.",
(const char *) db_name,
(const char *) event_name);
invalid_creation_ctx= TRUE;
}
/*
If we failed to resolve the database collation, load the default one
from the disk.
*/
if (!db_cl)
db_cl= get_default_db_collation(thd, db_name);
/* Create the context. */
*ctx= new Event_creation_ctx(client_cs, connection_cl, db_cl);
return invalid_creation_ctx;
}
/*************************************************************************/
/*
Initiliazes dbname and name of an Event_queue_element_for_exec
object
SYNOPSIS
Event_queue_element_for_exec::init()
RETURN VALUE
FALSE OK
TRUE Error (OOM)
*/
bool
Event_queue_element_for_exec::init(LEX_STRING db, LEX_STRING n)
{
if (!(dbname.str= my_strndup(db.str, dbname.length= db.length, MYF(MY_WME))))
return TRUE;
if (!(name.str= my_strndup(n.str, name.length= n.length, MYF(MY_WME))))
{
my_free(dbname.str);
return TRUE;
}
return FALSE;
}
/*
Destructor
SYNOPSIS
Event_queue_element_for_exec::~Event_queue_element_for_exec()
*/
Event_queue_element_for_exec::~Event_queue_element_for_exec()
{
my_free(dbname.str);
my_free(name.str);
}
/*
Constructor
SYNOPSIS
Event_basic::Event_basic()
*/
Event_basic::Event_basic()
{
DBUG_ENTER("Event_basic::Event_basic");
/* init memory root */
init_sql_alloc(&mem_root, 256, 512, MYF(0));
dbname.str= name.str= NULL;
dbname.length= name.length= 0;
time_zone= NULL;
DBUG_VOID_RETURN;
}
/*
Destructor
SYNOPSIS
Event_basic::Event_basic()
*/
Event_basic::~Event_basic()
{
DBUG_ENTER("Event_basic::~Event_basic");
free_root(&mem_root, MYF(0));
DBUG_VOID_RETURN;
}
/*
Short function to load a char column into a LEX_STRING
SYNOPSIS
Event_basic::load_string_field()
field_name The field( enum_events_table_field is not actually used
because it's unknown in event_data_objects.h)
fields The Field array
field_value The value
*/
bool
Event_basic::load_string_fields(Field **fields, ...)
{
bool ret= FALSE;
va_list args;
enum enum_events_table_field field_name;
LEX_STRING *field_value;
DBUG_ENTER("Event_basic::load_string_fields");
va_start(args, fields);
field_name= (enum enum_events_table_field) va_arg(args, int);
while (field_name < ET_FIELD_COUNT)
{
field_value= va_arg(args, LEX_STRING *);
if ((field_value->str= get_field(&mem_root, fields[field_name])) == NullS)
{
ret= TRUE;
break;
}
field_value->length= strlen(field_value->str);
field_name= (enum enum_events_table_field) va_arg(args, int);
}
va_end(args);
DBUG_RETURN(ret);
}
bool
Event_basic::load_time_zone(THD *thd, const LEX_STRING tz_name)
{
String str(tz_name.str, &my_charset_latin1);
time_zone= my_tz_find(thd, &str);
return (time_zone == NULL);
}
/*
Constructor
SYNOPSIS
Event_queue_element::Event_queue_element()
*/
Event_queue_element::Event_queue_element():
on_completion(Event_parse_data::ON_COMPLETION_DROP),
status(Event_parse_data::ENABLED), expression(0), dropped(FALSE),
execution_count(0)
{
DBUG_ENTER("Event_queue_element::Event_queue_element");
starts= ends= execute_at= last_executed= 0;
starts_null= ends_null= execute_at_null= TRUE;
DBUG_VOID_RETURN;
}
/*
Destructor
SYNOPSIS
Event_queue_element::Event_queue_element()
*/
Event_queue_element::~Event_queue_element()
{
}
/*
Constructor
SYNOPSIS
Event_timed::Event_timed()
*/
Event_timed::Event_timed():
created(0), modified(0), sql_mode(0)
{
DBUG_ENTER("Event_timed::Event_timed");
init();
DBUG_VOID_RETURN;
}
/*
Destructor
SYNOPSIS
Event_timed::~Event_timed()
*/
Event_timed::~Event_timed()
{
}
/*
Constructor
SYNOPSIS
Event_job_data::Event_job_data()
*/
Event_job_data::Event_job_data()
:sql_mode(0)
{
}
/*
Init all member variables
SYNOPSIS
Event_timed::init()
*/
void
Event_timed::init()
{
DBUG_ENTER("Event_timed::init");
definer_user.str= definer_host.str= body.str= comment.str= NULL;
definer_user.length= definer_host.length= body.length= comment.length= 0;
sql_mode= 0;
DBUG_VOID_RETURN;
}
/**
Load an event's body from a row from mysql.event.
@details This method is silent on errors and should behave like that.
Callers should handle throwing of error messages. The reason is that the
class should not know about how to deal with communication.
@return Operation status
@retval FALSE OK
@retval TRUE Error
*/
bool
Event_job_data::load_from_row(THD *thd, TABLE *table)
{
char *ptr;
size_t len;
LEX_STRING tz_name;
DBUG_ENTER("Event_job_data::load_from_row");
if (!table)
DBUG_RETURN(TRUE);
if (table->s->fields < ET_FIELD_COUNT)
DBUG_RETURN(TRUE);
if (load_string_fields(table->field,
ET_FIELD_DB, &dbname,
ET_FIELD_NAME, &name,
ET_FIELD_BODY, &body,
ET_FIELD_DEFINER, &definer,
ET_FIELD_TIME_ZONE, &tz_name,
ET_FIELD_COUNT))
DBUG_RETURN(TRUE);
if (load_time_zone(thd, tz_name))
DBUG_RETURN(TRUE);
Event_creation_ctx::load_from_db(thd, &mem_root, dbname.str, name.str, table,
&creation_ctx);
ptr= strchr(definer.str, '@');
if (! ptr)
ptr= definer.str;
len= ptr - definer.str;
definer_user.str= strmake_root(&mem_root, definer.str, len);
definer_user.length= len;
len= definer.length - len - 1;
/* 1:because of @ */
definer_host.str= strmake_root(&mem_root, ptr + 1, len);
definer_host.length= len;
sql_mode= (ulong) table->field[ET_FIELD_SQL_MODE]->val_int();
DBUG_RETURN(FALSE);
}
/**
Load an event's body from a row from mysql.event.
@details This method is silent on errors and should behave like that.
Callers should handle throwing of error messages. The reason is that the
class should not know about how to deal with communication.
@return Operation status
@retval FALSE OK
@retval TRUE Error
*/
bool
Event_queue_element::load_from_row(THD *thd, TABLE *table)
{
char *ptr;
MYSQL_TIME time;
LEX_STRING tz_name;
DBUG_ENTER("Event_queue_element::load_from_row");
if (!table)
DBUG_RETURN(TRUE);
if (table->s->fields < ET_FIELD_COUNT)
DBUG_RETURN(TRUE);
if (load_string_fields(table->field,
ET_FIELD_DB, &dbname,
ET_FIELD_NAME, &name,
ET_FIELD_DEFINER, &definer,
ET_FIELD_TIME_ZONE, &tz_name,
ET_FIELD_COUNT))
DBUG_RETURN(TRUE);
if (load_time_zone(thd, tz_name))
DBUG_RETURN(TRUE);
starts_null= table->field[ET_FIELD_STARTS]->is_null();
uint not_used;
if (!starts_null)
{
table->field[ET_FIELD_STARTS]->get_date(&time, TIME_NO_ZERO_DATE);
starts= my_tz_OFFSET0->TIME_to_gmt_sec(&time,¬_used);
}
ends_null= table->field[ET_FIELD_ENDS]->is_null();
if (!ends_null)
{
table->field[ET_FIELD_ENDS]->get_date(&time, TIME_NO_ZERO_DATE);
ends= my_tz_OFFSET0->TIME_to_gmt_sec(&time,¬_used);
}
if (!table->field[ET_FIELD_INTERVAL_EXPR]->is_null())
expression= table->field[ET_FIELD_INTERVAL_EXPR]->val_int();
else
expression= 0;
/*
If neigher STARTS and ENDS is set, then both fields are empty.
Hence, if ET_FIELD_EXECUTE_AT is empty there is an error.
*/
execute_at_null= table->field[ET_FIELD_EXECUTE_AT]->is_null();
DBUG_ASSERT(!(starts_null && ends_null && !expression && execute_at_null));
if (!expression && !execute_at_null)
{
if (table->field[ET_FIELD_EXECUTE_AT]->get_date(&time,
TIME_NO_ZERO_DATE))
DBUG_RETURN(TRUE);
execute_at= my_tz_OFFSET0->TIME_to_gmt_sec(&time,¬_used);
}
/*
We load the interval type from disk as string and then map it to
an integer. This decouples the values of enum interval_type
and values actually stored on disk. Therefore the type can be
reordered without risking incompatibilities of data between versions.
*/
if (!table->field[ET_FIELD_TRANSIENT_INTERVAL]->is_null())
{
int i;
char buff[MAX_FIELD_WIDTH];
String str(buff, sizeof(buff), &my_charset_bin);
LEX_STRING tmp;
table->field[ET_FIELD_TRANSIENT_INTERVAL]->val_str(&str);
if (!(tmp.length= str.length()))
DBUG_RETURN(TRUE);
tmp.str= str.c_ptr_safe();
i= find_string_in_array(interval_type_to_name, &tmp, system_charset_info);
if (i < 0)
DBUG_RETURN(TRUE);
interval= (interval_type) i;
}
if (!table->field[ET_FIELD_LAST_EXECUTED]->is_null())
{
table->field[ET_FIELD_LAST_EXECUTED]->get_date(&time,
TIME_NO_ZERO_DATE);
last_executed= my_tz_OFFSET0->TIME_to_gmt_sec(&time,¬_used);
}
if ((ptr= get_field(&mem_root, table->field[ET_FIELD_STATUS])) == NullS)
DBUG_RETURN(TRUE);
DBUG_PRINT("load_from_row", ("Event [%s] is [%s]", name.str, ptr));
/* Set event status (ENABLED | SLAVESIDE_DISABLED | DISABLED) */
switch (ptr[0])
{
case 'E' :
status = Event_parse_data::ENABLED;
break;
case 'S' :
status = Event_parse_data::SLAVESIDE_DISABLED;
break;
case 'D' :
default:
status = Event_parse_data::DISABLED;
break;
}
if ((ptr= get_field(&mem_root, table->field[ET_FIELD_ORIGINATOR])) == NullS)
DBUG_RETURN(TRUE);
originator = table->field[ET_FIELD_ORIGINATOR]->val_int();
/* ToDo : Andrey . Find a way not to allocate ptr on event_mem_root */
if ((ptr= get_field(&mem_root,
table->field[ET_FIELD_ON_COMPLETION])) == NullS)
DBUG_RETURN(TRUE);
on_completion= (ptr[0]=='D'? Event_parse_data::ON_COMPLETION_DROP:
Event_parse_data::ON_COMPLETION_PRESERVE);
DBUG_RETURN(FALSE);
}
/**
Load an event's body from a row from mysql.event.
@details This method is silent on errors and should behave like that.
Callers should handle throwing of error messages. The reason is that the
class should not know about how to deal with communication.
@return Operation status
@retval FALSE OK
@retval TRUE Error
*/
bool
Event_timed::load_from_row(THD *thd, TABLE *table)
{
char *ptr;
size_t len;
DBUG_ENTER("Event_timed::load_from_row");
if (Event_queue_element::load_from_row(thd, table))
DBUG_RETURN(TRUE);
if (load_string_fields(table->field,
ET_FIELD_BODY, &body,
ET_FIELD_BODY_UTF8, &body_utf8,
ET_FIELD_COUNT))
DBUG_RETURN(TRUE);
if (Event_creation_ctx::load_from_db(thd, &mem_root, dbname.str, name.str,
table, &creation_ctx))
{
push_warning_printf(thd,
Sql_condition::WARN_LEVEL_WARN,
ER_EVENT_INVALID_CREATION_CTX,
ER(ER_EVENT_INVALID_CREATION_CTX),
(const char *) dbname.str,
(const char *) name.str);
}
ptr= strchr(definer.str, '@');
if (! ptr)
ptr= definer.str;
len= ptr - definer.str;
definer_user.str= strmake_root(&mem_root, definer.str, len);
definer_user.length= len;
len= definer.length - len - 1;
/* 1:because of @ */
definer_host.str= strmake_root(&mem_root, ptr + 1, len);
definer_host.length= len;
created= table->field[ET_FIELD_CREATED]->val_int();
modified= table->field[ET_FIELD_MODIFIED]->val_int();
comment.str= get_field(&mem_root, table->field[ET_FIELD_COMMENT]);
if (comment.str != NullS)
comment.length= strlen(comment.str);
else
comment.length= 0;
sql_mode= (ulong) table->field[ET_FIELD_SQL_MODE]->val_int();
DBUG_RETURN(FALSE);
}
/*
add_interval() adds a specified interval to time 'ltime' in time
zone 'time_zone', and returns the result converted to the number of
seconds since epoch (aka Unix time; in UTC time zone). Zero result
means an error.
*/
static
my_time_t
add_interval(MYSQL_TIME *ltime, const Time_zone *time_zone,
interval_type scale, INTERVAL interval)
{
if (date_add_interval(ltime, scale, interval))
return 0;
uint not_used;
return time_zone->TIME_to_gmt_sec(ltime, ¬_used);
}
/*
Computes the sum of a timestamp plus interval.
SYNOPSIS
get_next_time()
time_zone event time zone
next the sum
start add interval_value to this time
time_now current time
i_value quantity of time type interval to add
i_type type of interval to add (SECOND, MINUTE, HOUR, WEEK ...)
RETURN VALUE
0 OK
1 Error
NOTES
1) If the interval is conversible to SECOND, like MINUTE, HOUR, DAY, WEEK.
Then we use TIMEDIFF()'s implementation as underlying and number of
seconds as resolution for computation.
2) In all other cases - MONTH, QUARTER, YEAR we use MONTH as resolution
and PERIOD_DIFF()'s implementation
*/
static
bool get_next_time(const Time_zone *time_zone, my_time_t *next,
my_time_t start, my_time_t time_now,
int i_value, interval_type i_type)
{
DBUG_ENTER("get_next_time");
DBUG_PRINT("enter", ("start: %lu now: %lu", (long) start, (long) time_now));
DBUG_ASSERT(start <= time_now);
longlong months=0, seconds=0;
switch (i_type) {
case INTERVAL_YEAR:
months= i_value*12;
break;
case INTERVAL_QUARTER:
/* Has already been converted to months */
case INTERVAL_YEAR_MONTH:
case INTERVAL_MONTH:
months= i_value;
break;
case INTERVAL_WEEK:
/* WEEK has already been converted to days */
case INTERVAL_DAY:
seconds= i_value*24*3600;
break;
case INTERVAL_DAY_HOUR:
case INTERVAL_HOUR:
seconds= i_value*3600;
break;
case INTERVAL_DAY_MINUTE:
case INTERVAL_HOUR_MINUTE:
case INTERVAL_MINUTE:
seconds= i_value*60;
break;
case INTERVAL_DAY_SECOND:
case INTERVAL_HOUR_SECOND:
case INTERVAL_MINUTE_SECOND:
case INTERVAL_SECOND:
seconds= i_value;
break;
case INTERVAL_DAY_MICROSECOND:
case INTERVAL_HOUR_MICROSECOND:
case INTERVAL_MINUTE_MICROSECOND:
case INTERVAL_SECOND_MICROSECOND:
case INTERVAL_MICROSECOND:
/*
We should return an error here so SHOW EVENTS/ SELECT FROM I_S.EVENTS
would give an error then.
*/
DBUG_RETURN(1);
case INTERVAL_LAST:
DBUG_ASSERT(0);
}
DBUG_PRINT("info", ("seconds: %ld months: %ld", (long) seconds, (long) months));
MYSQL_TIME local_start;
MYSQL_TIME local_now;
/* Convert times from UTC to local. */
{
time_zone->gmt_sec_to_TIME(&local_start, start);
time_zone->gmt_sec_to_TIME(&local_now, time_now);
}
INTERVAL interval;
bzero(&interval, sizeof(interval));
my_time_t next_time= 0;
if (seconds)
{
longlong seconds_diff;
long microsec_diff;
bool negative= calc_time_diff(&local_now, &local_start, 1,
&seconds_diff, µsec_diff);
if (!negative)
{
/*
The formula below returns the interval that, when added to
local_start, will always give the time in the future.
*/
interval.second= seconds_diff - seconds_diff % seconds + seconds;
next_time= add_interval(&local_start, time_zone,
INTERVAL_SECOND, interval);
if (next_time == 0)
goto done;
}
if (next_time <= time_now)
{
/*
If 'negative' is true above, then 'next_time == 0', and
'next_time <= time_now' is also true. If negative is false,
then next_time was set, but perhaps to the value that is less
then time_now. See below for elaboration.
*/
DBUG_ASSERT(negative || next_time > 0);
/*
If local_now < local_start, i.e. STARTS time is in the future
according to the local time (it always in the past according
to UTC---this is a prerequisite of this function), then
STARTS is almost always in the past according to the local
time too. However, in the time zone that has backward
Daylight Saving Time shift, the following may happen: suppose
we have a backward DST shift at certain date after 2:59:59,
i.e. local time goes 1:59:59, 2:00:00, ... , 2:59:59, (shift
here) 2:00:00 (again), ... , 2:59:59 (again), 3:00:00, ... .
Now suppose the time has passed the first 2:59:59, has been
shifted backward, and now is (the second) 2:20:00. The user
does CREATE EVENT with STARTS 'current-date 2:40:00'. Local
time 2:40:00 from create statement is treated by time
functions as the first such time, so according to UTC it comes
before the second 2:20:00. But according to local time it is
obviously in the future, so we end up in this branch.
Since we are in the second pass through 2:00:00--2:59:59, and
any local time form this interval is treated by system
functions as the time from the first pass, we have to find the
time for the next execution that is past the DST-affected
interval (past the second 2:59:59 for our example,
i.e. starting from 3:00:00). We do this in the loop until the
local time is mapped onto future UTC time. 'start' time is in
the past, so we may use 'do { } while' here, and add the first
interval right away.
Alternatively, it could be that local_now >= local_start. Now
for the example above imagine we do CREATE EVENT with STARTS
'current-date 2:10:00'. Local start 2:10 is in the past (now
is local 2:20), so we add an interval, and get next execution
time, say, 2:40. It is in the future according to local time,
but, again, since we are in the second pass through
2:00:00--2:59:59, 2:40 will be converted into UTC time in the
past. So we will end up in this branch again, and may add
intervals in a 'do { } while' loop.
Note that for any given event we may end up here only if event
next execution time will map to the time interval that is
passed twice, and only if the server was started during the
second pass, or the event is being created during the second
pass. After that, we never will get here (unless we again
start the server during the second pass). In other words,
such a condition is extremely rare.
*/
interval.second= seconds;
do
{
next_time= add_interval(&local_start, time_zone,
INTERVAL_SECOND, interval);
if (next_time == 0)
goto done;
}
while (next_time <= time_now);
}
}
else
{
long diff_months= ((long) local_now.year - (long) local_start.year)*12 +
((long) local_now.month - (long) local_start.month);
/*
Unlike for seconds above, the formula below returns the interval
that, when added to the local_start, will give the time in the
past, or somewhere in the current month. We are interested in
the latter case, to see if this time has already passed, or is
yet to come this month.
Note that the time is guaranteed to be in the past unless
(diff_months % months == 0), but no good optimization is
possible here, because (diff_months % months == 0) is what will
happen most of the time, as get_next_time() will be called right
after the execution of the event. We could pass last_executed
time to this function, and see if the execution has already
happened this month, but for that we will have to convert
last_executed from seconds since epoch to local broken-down
time, and this will greatly reduce the effect of the
optimization. So instead we keep the code simple and clean.
*/
interval.month= (ulong) (diff_months - diff_months % months);
next_time= add_interval(&local_start, time_zone,
INTERVAL_MONTH, interval);
if (next_time == 0)
goto done;
if (next_time <= time_now)
{
interval.month= (ulong) months;
next_time= add_interval(&local_start, time_zone,
INTERVAL_MONTH, interval);
if (next_time == 0)
goto done;
}
}
DBUG_ASSERT(time_now < next_time);
*next= next_time;
done:
DBUG_PRINT("info", ("next_time: %ld", (long) next_time));
DBUG_RETURN(next_time == 0);
}
/*
Computes next execution time.
SYNOPSIS
Event_queue_element::compute_next_execution_time()
RETURN VALUE
FALSE OK
TRUE Error
NOTES
The time is set in execute_at, if no more executions the latter is
set to 0.
*/
bool
Event_queue_element::compute_next_execution_time()
{
my_time_t time_now;
DBUG_ENTER("Event_queue_element::compute_next_execution_time");
DBUG_PRINT("enter", ("starts: %lu ends: %lu last_executed: %lu this: 0x%lx",
(long) starts, (long) ends, (long) last_executed,
(long) this));
if (status != Event_parse_data::ENABLED)
{
DBUG_PRINT("compute_next_execution_time",
("Event %s is DISABLED", name.str));
goto ret;
}
/* If one-time, no need to do computation */
if (!expression)
{
/* Let's check whether it was executed */
if (last_executed)
{
DBUG_PRINT("info",("One-time event %s.%s of was already executed",
dbname.str, name.str));
dropped= (on_completion == Event_parse_data::ON_COMPLETION_DROP);
DBUG_PRINT("info",("One-time event will be dropped: %d.", dropped));
status= Event_parse_data::DISABLED;
}
goto ret;
}
time_now= current_thd->query_start();
DBUG_PRINT("info",("NOW: [%lu]", (ulong) time_now));
/* if time_now is after ends don't execute anymore */
if (!ends_null && ends < time_now)
{
DBUG_PRINT("info", ("NOW after ENDS, don't execute anymore"));
/* time_now is after ends. don't execute anymore */
execute_at= 0;
execute_at_null= TRUE;
if (on_completion == Event_parse_data::ON_COMPLETION_DROP)
dropped= TRUE;
DBUG_PRINT("info", ("Dropped: %d", dropped));
status= Event_parse_data::DISABLED;
goto ret;
}
/*
Here time_now is before or equals ends if the latter is set.
Let's check whether time_now is before starts.
If so schedule for starts.
*/
if (!starts_null && time_now <= starts)
{
if (time_now == starts && starts == last_executed)
{
/*
do nothing or we will schedule for second time execution at starts.
*/
}
else
{
DBUG_PRINT("info", ("STARTS is future, NOW <= STARTS,sched for STARTS"));
/*
starts is in the future
time_now before starts. Scheduling for starts
*/
execute_at= starts;
execute_at_null= FALSE;
goto ret;
}
}
if (!starts_null && !ends_null)
{
/*
Both starts and m_ends are set and time_now is between them (incl.)
If last_executed is set then increase with m_expression. The new MYSQL_TIME is
after m_ends set execute_at to 0. And check for on_completion
If not set then schedule for now.
*/
DBUG_PRINT("info", ("Both STARTS & ENDS are set"));
if (!last_executed)
{
DBUG_PRINT("info", ("Not executed so far."));
}
{
my_time_t next_exec;
if (get_next_time(time_zone, &next_exec, starts, time_now,
(int) expression, interval))
goto err;
/* There was previous execution */
if (ends < next_exec)
{
DBUG_PRINT("info", ("Next execution of %s after ENDS. Stop executing.",
name.str));
/* Next execution after ends. No more executions */
execute_at= 0;
execute_at_null= TRUE;
if (on_completion == Event_parse_data::ON_COMPLETION_DROP)
dropped= TRUE;
status= Event_parse_data::DISABLED;
}
else
{
DBUG_PRINT("info",("Next[%lu]", (ulong) next_exec));
execute_at= next_exec;
execute_at_null= FALSE;
}
}
goto ret;
}
else if (starts_null && ends_null)
{
/* starts is always set, so this is a dead branch !! */
DBUG_PRINT("info", ("Neither STARTS nor ENDS are set"));
/*
Both starts and m_ends are not set, so we schedule for the next
based on last_executed.
*/
if (last_executed)
{
my_time_t next_exec;
if (get_next_time(time_zone, &next_exec, starts, time_now,
(int) expression, interval))
goto err;
execute_at= next_exec;
DBUG_PRINT("info",("Next[%lu]", (ulong) next_exec));
}
else
{
/* last_executed not set. Schedule the event for now */
DBUG_PRINT("info", ("Execute NOW"));
execute_at= time_now;
}
execute_at_null= FALSE;
}
else
{
/* either starts or m_ends is set */
if (!starts_null)
{
DBUG_PRINT("info", ("STARTS is set"));
/*
- starts is set.
- starts is not in the future according to check made before
Hence schedule for starts + m_expression in case last_executed
is not set, otherwise to last_executed + m_expression
*/
if (!last_executed)
{
DBUG_PRINT("info", ("Not executed so far."));
}
{
my_time_t next_exec;
if (get_next_time(time_zone, &next_exec, starts, time_now,
(int) expression, interval))
goto err;
execute_at= next_exec;
DBUG_PRINT("info",("Next[%lu]", (ulong) next_exec));
}
execute_at_null= FALSE;
}
else
{
/* this is a dead branch, because starts is always set !!! */
DBUG_PRINT("info", ("STARTS is not set. ENDS is set"));
/*
- m_ends is set
- m_ends is after time_now or is equal
Hence check for m_last_execute and increment with m_expression.
If last_executed is not set then schedule for now
*/
if (!last_executed)
execute_at= time_now;
else
{
my_time_t next_exec;
if (get_next_time(time_zone, &next_exec, starts, time_now,
(int) expression, interval))
goto err;
if (ends < next_exec)
{
DBUG_PRINT("info", ("Next execution after ENDS. Stop executing."));
execute_at= 0;
execute_at_null= TRUE;
status= Event_parse_data::DISABLED;
if (on_completion == Event_parse_data::ON_COMPLETION_DROP)
dropped= TRUE;
}
else
{
DBUG_PRINT("info", ("Next[%lu]", (ulong) next_exec));
execute_at= next_exec;
execute_at_null= FALSE;
}
}
}
goto ret;
}
ret:
DBUG_PRINT("info", ("ret: 0 execute_at: %lu", (long) execute_at));
DBUG_RETURN(FALSE);
err:
DBUG_PRINT("info", ("ret=1"));
DBUG_RETURN(TRUE);
}
/*
Set the internal last_executed MYSQL_TIME struct to now. NOW is the
time according to thd->query_start(), so the THD's clock.
SYNOPSIS
Event_queue_element::mark_last_executed()
thd thread context
*/
void
Event_queue_element::mark_last_executed(THD *thd)
{
last_executed= thd->query_start();
execution_count++;
}
static
void
append_datetime(String *buf, Time_zone *time_zone, my_time_t secs,
const char *name, uint len)
{
char dtime_buff[20*2+32];/* +32 to make my_snprintf_{8bit|ucs2} happy */
buf->append(STRING_WITH_LEN(" "));
buf->append(name, len);
buf->append(STRING_WITH_LEN(" '"));
/*
Pass the buffer and the second param tells fills the buffer and
returns the number of chars to copy.
*/
MYSQL_TIME time;
time_zone->gmt_sec_to_TIME(&time, secs);
buf->append(dtime_buff, my_datetime_to_str(&time, dtime_buff, 0));
buf->append(STRING_WITH_LEN("'"));
}
/*
Get SHOW CREATE EVENT as string
SYNOPSIS
Event_timed::get_create_event(THD *thd, String *buf)
thd Thread
buf String*, should be already allocated. CREATE EVENT goes inside.
RETURN VALUE
0 OK
EVEX_MICROSECOND_UNSUP Error (for now if mysql.event has been
tampered and MICROSECONDS interval or
derivative has been put there.
*/
int
Event_timed::get_create_event(THD *thd, String *buf)
{
char tmp_buf[2 * STRING_BUFFER_USUAL_SIZE];
String expr_buf(tmp_buf, sizeof(tmp_buf), system_charset_info);
expr_buf.length(0);
DBUG_ENTER("get_create_event");
DBUG_PRINT("ret_info",("body_len=[%d]body=[%s]",
(int) body.length, body.str));
if (expression && Events::reconstruct_interval_expression(&expr_buf, interval,
expression))
DBUG_RETURN(EVEX_MICROSECOND_UNSUP);
buf->append(STRING_WITH_LEN("CREATE "));
append_definer(thd, buf, &definer_user, &definer_host);
buf->append(STRING_WITH_LEN("EVENT "));
append_identifier(thd, buf, name.str, name.length);
if (expression)
{
buf->append(STRING_WITH_LEN(" ON SCHEDULE EVERY "));
buf->append(expr_buf);
buf->append(' ');
LEX_STRING *ival= &interval_type_to_name[interval];
buf->append(ival->str, ival->length);
if (!starts_null)
append_datetime(buf, time_zone, starts, STRING_WITH_LEN("STARTS"));
if (!ends_null)
append_datetime(buf, time_zone, ends, STRING_WITH_LEN("ENDS"));
}
else
{
append_datetime(buf, time_zone, execute_at,
STRING_WITH_LEN("ON SCHEDULE AT"));
}
if (on_completion == Event_parse_data::ON_COMPLETION_DROP)
buf->append(STRING_WITH_LEN(" ON COMPLETION NOT PRESERVE "));
else
buf->append(STRING_WITH_LEN(" ON COMPLETION PRESERVE "));
if (status == Event_parse_data::ENABLED)
buf->append(STRING_WITH_LEN("ENABLE"));
else if (status == Event_parse_data::SLAVESIDE_DISABLED)
buf->append(STRING_WITH_LEN("DISABLE ON SLAVE"));
else
buf->append(STRING_WITH_LEN("DISABLE"));
if (comment.length)
{
buf->append(STRING_WITH_LEN(" COMMENT "));
append_unescaped(buf, comment.str, comment.length);
}
buf->append(STRING_WITH_LEN(" DO "));
buf->append(body.str, body.length);
DBUG_RETURN(0);
}
/**
Get an artificial stored procedure to parse as an event definition.
*/
bool
Event_job_data::construct_sp_sql(THD *thd, String *sp_sql)
{
LEX_STRING buffer;
const uint STATIC_SQL_LENGTH= 44;
DBUG_ENTER("Event_job_data::construct_sp_sql");
/*
Allocate a large enough buffer on the thread execution memory
root to avoid multiple [re]allocations on system heap
*/
buffer.length= STATIC_SQL_LENGTH + name.length + body.length;
if (! (buffer.str= (char*) thd->alloc(buffer.length)))
DBUG_RETURN(TRUE);
sp_sql->set(buffer.str, buffer.length, system_charset_info);
sp_sql->length(0);
sp_sql->append(C_STRING_WITH_LEN("CREATE "));
sp_sql->append(C_STRING_WITH_LEN("PROCEDURE "));
/*
Let's use the same name as the event name to perhaps produce a
better error message in case it is a part of some parse error.
We're using append_identifier here to successfully parse
events with reserved names.
*/
append_identifier(thd, sp_sql, name.str, name.length);
/*
The default SQL security of a stored procedure is DEFINER. We
have already activated the security context of the event, so
let's execute the procedure with the invoker rights to save on
resets of security contexts.
*/
sp_sql->append(C_STRING_WITH_LEN("() SQL SECURITY INVOKER "));
sp_sql->append(body.str, body.length);
DBUG_RETURN(thd->is_fatal_error);
}
/**
Get DROP EVENT statement to binlog the drop of ON COMPLETION NOT
PRESERVE event.
*/
bool
Event_job_data::construct_drop_event_sql(THD *thd, String *sp_sql)
{
LEX_STRING buffer;
const uint STATIC_SQL_LENGTH= 14;
DBUG_ENTER("Event_job_data::construct_drop_event_sql");
buffer.length= STATIC_SQL_LENGTH + name.length*2 + dbname.length*2;
if (! (buffer.str= (char*) thd->alloc(buffer.length)))
DBUG_RETURN(TRUE);
sp_sql->set(buffer.str, buffer.length, system_charset_info);
sp_sql->length(0);
sp_sql->append(C_STRING_WITH_LEN("DROP EVENT "));
append_identifier(thd, sp_sql, dbname.str, dbname.length);
sp_sql->append('.');
append_identifier(thd, sp_sql, name.str, name.length);
DBUG_RETURN(thd->is_fatal_error);
}
/**
Compiles and executes the event (the underlying sp_head object)
@retval TRUE error (reported to the error log)
@retval FALSE success
*/
bool
Event_job_data::execute(THD *thd, bool drop)
{
String sp_sql;
#ifndef NO_EMBEDDED_ACCESS_CHECKS
Security_context event_sctx, *save_sctx= NULL;
#endif
List<Item> empty_item_list;
bool ret= TRUE;
DBUG_ENTER("Event_job_data::execute");
mysql_reset_thd_for_next_command(thd);
/*
MySQL parser currently assumes that current database is either
present in THD or all names in all statements are fully specified.
And yet not fully specified names inside stored programs must be
be supported, even if the current database is not set:
CREATE PROCEDURE db1.p1() BEGIN CREATE TABLE t1; END//
-- in this example t1 should be always created in db1 and the statement
must parse even if there is no current database.
To support this feature and still address the parser limitation,
we need to set the current database here.
We don't have to call mysql_change_db, since the checks performed
in it are unnecessary for the purpose of parsing, and
mysql_change_db will be invoked anyway later, to activate the
procedure database before it's executed.
*/
thd->set_db(dbname.str, dbname.length);
lex_start(thd);
#ifndef NO_EMBEDDED_ACCESS_CHECKS
if (event_sctx.change_security_context(thd,
&definer_user, &definer_host,
&dbname, &save_sctx))
{
sql_print_error("Event Scheduler: "
"[%s].[%s.%s] execution failed, "
"failed to authenticate the user.",
definer.str, dbname.str, name.str);
goto end;
}
#endif
if (check_access(thd, EVENT_ACL, dbname.str, NULL, NULL, 0, 0))
{
/*
This aspect of behavior is defined in the worklog,
and this is how triggers work too: if TRIGGER
privilege is revoked from trigger definer,
triggers are not executed.
*/
sql_print_error("Event Scheduler: "
"[%s].[%s.%s] execution failed, "
"user no longer has EVENT privilege.",
definer.str, dbname.str, name.str);
goto end;
}
if (construct_sp_sql(thd, &sp_sql))
goto end;
/*
Set up global thread attributes to reflect the properties of
this Event. We can simply reset these instead of usual
backup/restore employed in stored programs since we know that
this is a top level statement and the worker thread is
allocated exclusively to execute this event.
*/
thd->variables.sql_mode= sql_mode;
thd->variables.time_zone= time_zone;
thd->set_query(sp_sql.c_ptr_safe(), sp_sql.length());
{
Parser_state parser_state;
if (parser_state.init(thd, thd->query(), thd->query_length()))
goto end;
if (parse_sql(thd, & parser_state, creation_ctx))
{
sql_print_error("Event Scheduler: "
"%serror during compilation of %s.%s",
thd->is_fatal_error ? "fatal " : "",
(const char *) dbname.str, (const char *) name.str);
goto end;
}
}
{
sp_head *sphead= thd->lex->sphead;
DBUG_ASSERT(sphead);
sphead->m_flags|= sp_head::LOG_SLOW_STATEMENTS;
sphead->m_flags|= sp_head::LOG_GENERAL_LOG;
sphead->set_info(0, 0, &thd->lex->sp_chistics, sql_mode);
sphead->set_creation_ctx(creation_ctx);
sphead->optimize();
ret= sphead->execute_procedure(thd, &empty_item_list);
/*
There is no pre-locking and therefore there should be no
tables open and locked left after execute_procedure.
*/
}
end:
if (drop && !thd->is_fatal_error)
{
/*
We must do it here since here we're under the right authentication
ID of the event definer.
*/
sql_print_information("Event Scheduler: Dropping %s.%s",
(const char *) dbname.str, (const char *) name.str);
/*
Construct a query for the binary log, to ensure the event is dropped
on the slave
*/
if (construct_drop_event_sql(thd, &sp_sql))
ret= 1;
else
{
ulong saved_master_access;
thd->set_query(sp_sql.c_ptr_safe(), sp_sql.length());
/*
NOTE: even if we run in read-only mode, we should be able to lock
the mysql.event table for writing. In order to achieve this, we
should call mysql_lock_tables() under the super-user.
Same goes for transaction access mode.
Temporarily reset it to read-write.
*/
saved_master_access= thd->security_ctx->master_access;
thd->security_ctx->master_access |= SUPER_ACL;
bool save_tx_read_only= thd->tx_read_only;
thd->tx_read_only= false;
ret= Events::drop_event(thd, dbname, name, FALSE);
thd->tx_read_only= save_tx_read_only;
thd->security_ctx->master_access= saved_master_access;
}
}
#ifndef NO_EMBEDDED_ACCESS_CHECKS
if (save_sctx)
event_sctx.restore_security_context(thd, save_sctx);
#endif
thd->lex->unit.cleanup();
thd->end_statement();
thd->cleanup_after_query();
/* Avoid races with SHOW PROCESSLIST */
thd->reset_query();
DBUG_PRINT("info", ("EXECUTED %s.%s ret: %d", dbname.str, name.str, ret));
DBUG_RETURN(ret);
}
/*
Checks whether two events are in the same schema
SYNOPSIS
event_basic_db_equal()
db Schema
et Compare et->dbname to `db`
RETURN VALUE
TRUE Equal
FALSE Not equal
*/
bool
event_basic_db_equal(LEX_STRING db, Event_basic *et)
{
return !sortcmp_lex_string(et->dbname, db, system_charset_info);
}
/*
Checks whether an event has equal `db` and `name`
SYNOPSIS
event_basic_identifier_equal()
db Schema
name Name
et The event object
RETURN VALUE
TRUE Equal
FALSE Not equal
*/
bool
event_basic_identifier_equal(LEX_STRING db, LEX_STRING name, Event_basic *b)
{
return !sortcmp_lex_string(name, b->name, system_charset_info) &&
!sortcmp_lex_string(db, b->dbname, system_charset_info);
}
/**
@} (End of group Event_Scheduler)
*/
|