| Line | Hits | Source | Commit |
|---|
| 180 |
14000 |
CreateTriggerFiringOn(CreateTrigStmt *stmt, const char *queryString, |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 181 |
- |
Oid relOid, Oid refRelOid, Oid constraintOid, |
- |
| 182 |
- |
Oid indexOid, Oid funcoid, Oid parentTriggerOid, |
- |
| 183 |
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Node *whenClause, bool isInternal, bool in_partition, |
- |
| 184 |
- |
char trigger_fires_when) |
- |
| 185 |
- |
{ |
- |
| 186 |
- |
int16 tgtype; |
- |
| 187 |
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int ncolumns; |
- |
| 188 |
- |
int16 *columns; |
- |
| 189 |
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int2vector *tgattr; |
- |
| 190 |
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List *whenRtable; |
- |
| 191 |
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char *qual; |
- |
| 192 |
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Datum values[Natts_pg_trigger]; |
- |
| 193 |
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bool nulls[Natts_pg_trigger]; |
- |
| 194 |
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Relation rel; |
- |
| 195 |
- |
AclResult aclresult; |
- |
| 196 |
- |
Relation tgrel; |
- |
| 197 |
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Relation pgrel; |
- |
| 198 |
- |
HeapTuple tuple = NULL; |
- |
| 199 |
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Oid funcrettype; |
- |
| 200 |
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Oid trigoid = InvalidOid; |
- |
| 201 |
- |
char internaltrigname[NAMEDATALEN]; |
- |
| 202 |
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char *trigname; |
- |
| 203 |
- |
Oid constrrelid = InvalidOid; |
- |
| 204 |
- |
ObjectAddress myself, |
- |
| 205 |
- |
referenced; |
- |
| 206 |
- |
char *oldtablename = NULL; |
- |
| 207 |
- |
char *newtablename = NULL; |
- |
| 208 |
- |
bool partition_recurse; |
- |
| 209 |
- |
bool trigger_exists = false; |
- |
| 210 |
- |
Oid existing_constraint_oid = InvalidOid; |
- |
| 211 |
- |
bool existing_isInternal = false; |
- |
| 212 |
- |
bool existing_isClone = false; |
- |
| 213 |
- |
|
- |
| 214 |
- |
if (OidIsValid(relOid)) |
- |
| 215 |
- |
rel = table_open(relOid, ShareRowExclusiveLock); |
- |
| 216 |
- |
else |
- |
| 217 |
- |
rel = table_openrv(stmt->relation, ShareRowExclusiveLock); |
- |
| 218 |
- |
|
- |
| 219 |
- |
/* |
- |
| 220 |
- |
* Triggers must be on tables or views, and there are additional |
- |
| 221 |
- |
* relation-type-specific restrictions. |
- |
| 222 |
- |
*/ |
- |
| 223 |
- |
if (rel->rd_rel->relkind == RELKIND_RELATION) |
- |
| 224 |
- |
{ |
- |
| 225 |
- |
/* Tables can't have INSTEAD OF triggers */ |
- |
| 226 |
- |
if (stmt->timing != TRIGGER_TYPE_BEFORE && |
- |
| 227 |
- |
stmt->timing != TRIGGER_TYPE_AFTER) |
- |
| 228 |
- |
ereport(ERROR, |
- |
| 229 |
- |
(errcode(ERRCODE_WRONG_OBJECT_TYPE), |
- |
| 230 |
- |
errmsg("\"%s\" is a table", |
- |
| 231 |
- |
RelationGetRelationName(rel)), |
- |
| 232 |
- |
errdetail("Tables cannot have INSTEAD OF triggers."))); |
- |
| 233 |
- |
} |
- |
| 234 |
- |
else if (rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE) |
- |
| 235 |
- |
{ |
- |
| 236 |
- |
/* Partitioned tables can't have INSTEAD OF triggers */ |
- |
| 237 |
- |
if (stmt->timing != TRIGGER_TYPE_BEFORE && |
- |
| 238 |
- |
stmt->timing != TRIGGER_TYPE_AFTER) |
- |
| 239 |
- |
ereport(ERROR, |
- |
| 240 |
- |
(errcode(ERRCODE_WRONG_OBJECT_TYPE), |
- |
| 241 |
- |
errmsg("\"%s\" is a table", |
- |
| 242 |
- |
RelationGetRelationName(rel)), |
- |
| 243 |
- |
errdetail("Tables cannot have INSTEAD OF triggers."))); |
- |
| 244 |
- |
|
- |
| 245 |
- |
/* |
- |
| 246 |
- |
* FOR EACH ROW triggers have further restrictions |
- |
| 247 |
- |
*/ |
- |
| 248 |
- |
if (stmt->row) |
- |
| 249 |
- |
{ |
- |
| 250 |
- |
/* |
- |
| 251 |
- |
* Disallow use of transition tables. |
- |
| 252 |
- |
* |
- |
| 253 |
- |
* Note that we have another restriction about transition tables |
- |
| 254 |
- |
* in partitions; search for 'has_superclass' below for an |
- |
| 255 |
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* explanation. The check here is just to protect from the fact |
- |
| 256 |
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* that if we allowed it here, the creation would succeed for a |
- |
| 257 |
- |
* partitioned table with no partitions, but would be blocked by |
- |
| 258 |
- |
* the other restriction when the first partition was created, |
- |
| 259 |
- |
* which is very unfriendly behavior. |
- |
| 260 |
- |
*/ |
- |
| 261 |
- |
if (stmt->transitionRels != NIL) |
- |
| 262 |
- |
ereport(ERROR, |
- |
| 263 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 264 |
- |
errmsg("\"%s\" is a partitioned table", |
- |
| 265 |
- |
RelationGetRelationName(rel)), |
- |
| 266 |
- |
errdetail("ROW triggers with transition tables are not supported on partitioned tables."))); |
- |
| 267 |
- |
} |
- |
| 268 |
- |
} |
- |
| 269 |
- |
else if (rel->rd_rel->relkind == RELKIND_VIEW) |
- |
| 270 |
- |
{ |
- |
| 271 |
- |
/* |
- |
| 272 |
- |
* Views can have INSTEAD OF triggers (which we check below are |
- |
| 273 |
- |
* row-level), or statement-level BEFORE/AFTER triggers. |
- |
| 274 |
- |
*/ |
- |
| 275 |
- |
if (stmt->timing != TRIGGER_TYPE_INSTEAD && stmt->row) |
- |
| 276 |
- |
ereport(ERROR, |
- |
| 277 |
- |
(errcode(ERRCODE_WRONG_OBJECT_TYPE), |
- |
| 278 |
- |
errmsg("\"%s\" is a view", |
- |
| 279 |
- |
RelationGetRelationName(rel)), |
- |
| 280 |
- |
errdetail("Views cannot have row-level BEFORE or AFTER triggers."))); |
- |
| 281 |
- |
/* Disallow TRUNCATE triggers on VIEWs */ |
- |
| 282 |
- |
if (TRIGGER_FOR_TRUNCATE(stmt->events)) |
- |
| 283 |
- |
ereport(ERROR, |
- |
| 284 |
- |
(errcode(ERRCODE_WRONG_OBJECT_TYPE), |
- |
| 285 |
- |
errmsg("\"%s\" is a view", |
- |
| 286 |
- |
RelationGetRelationName(rel)), |
- |
| 287 |
- |
errdetail("Views cannot have TRUNCATE triggers."))); |
- |
| 288 |
- |
} |
- |
| 289 |
- |
else if (rel->rd_rel->relkind == RELKIND_FOREIGN_TABLE) |
- |
| 290 |
- |
{ |
- |
| 291 |
- |
if (stmt->timing != TRIGGER_TYPE_BEFORE && |
- |
| 292 |
- |
stmt->timing != TRIGGER_TYPE_AFTER) |
- |
| 293 |
- |
ereport(ERROR, |
- |
| 294 |
- |
(errcode(ERRCODE_WRONG_OBJECT_TYPE), |
- |
| 295 |
- |
errmsg("\"%s\" is a foreign table", |
- |
| 296 |
- |
RelationGetRelationName(rel)), |
- |
| 297 |
- |
errdetail("Foreign tables cannot have INSTEAD OF triggers."))); |
- |
| 298 |
- |
|
- |
| 299 |
- |
/* |
- |
| 300 |
- |
* We disallow constraint triggers to protect the assumption that |
- |
| 301 |
- |
* triggers on FKs can't be deferred. See notes with AfterTriggers |
- |
| 302 |
- |
* data structures, below. |
- |
| 303 |
- |
*/ |
- |
| 304 |
- |
if (stmt->isconstraint) |
- |
| 305 |
- |
ereport(ERROR, |
- |
| 306 |
- |
(errcode(ERRCODE_WRONG_OBJECT_TYPE), |
- |
| 307 |
- |
errmsg("\"%s\" is a foreign table", |
- |
| 308 |
- |
RelationGetRelationName(rel)), |
- |
| 309 |
- |
errdetail("Foreign tables cannot have constraint triggers."))); |
- |
| 310 |
- |
} |
- |
| 311 |
- |
else |
- |
| 312 |
- |
ereport(ERROR, |
- |
| 313 |
- |
(errcode(ERRCODE_WRONG_OBJECT_TYPE), |
- |
| 314 |
- |
errmsg("relation \"%s\" cannot have triggers", |
- |
| 315 |
- |
RelationGetRelationName(rel)), |
- |
| 316 |
- |
errdetail_relkind_not_supported(rel->rd_rel->relkind))); |
- |
| 317 |
- |
|
- |
| 318 |
- |
if (!allowSystemTableMods && IsSystemRelation(rel)) |
- |
| 319 |
- |
ereport(ERROR, |
- |
| 320 |
- |
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE), |
- |
| 321 |
- |
errmsg("permission denied: \"%s\" is a system catalog", |
- |
| 322 |
- |
RelationGetRelationName(rel)))); |
- |
| 323 |
- |
|
- |
| 324 |
- |
if (stmt->isconstraint) |
- |
| 325 |
- |
{ |
- |
| 326 |
- |
/* |
- |
| 327 |
- |
* We must take a lock on the target relation to protect against |
- |
| 328 |
- |
* concurrent drop. It's not clear that AccessShareLock is strong |
- |
| 329 |
- |
* enough, but we certainly need at least that much... otherwise, we |
- |
| 330 |
- |
* might end up creating a pg_constraint entry referencing a |
- |
| 331 |
- |
* nonexistent table. |
- |
| 332 |
- |
*/ |
- |
| 333 |
- |
if (OidIsValid(refRelOid)) |
- |
| 334 |
- |
{ |
- |
| 335 |
- |
LockRelationOid(refRelOid, AccessShareLock); |
- |
| 336 |
- |
constrrelid = refRelOid; |
- |
| 337 |
- |
} |
- |
| 338 |
- |
else if (stmt->constrrel != NULL) |
- |
| 339 |
- |
constrrelid = RangeVarGetRelid(stmt->constrrel, AccessShareLock, |
- |
| 340 |
- |
false); |
- |
| 341 |
- |
} |
- |
| 342 |
- |
|
- |
| 343 |
- |
/* permission checks */ |
- |
| 344 |
- |
if (!isInternal) |
- |
| 345 |
- |
{ |
- |
| 346 |
- |
aclresult = pg_class_aclcheck(RelationGetRelid(rel), GetUserId(), |
- |
| 347 |
- |
ACL_TRIGGER); |
- |
| 348 |
- |
if (aclresult != ACLCHECK_OK) |
- |
| 349 |
- |
aclcheck_error(aclresult, get_relkind_objtype(rel->rd_rel->relkind), |
- |
| 350 |
- |
RelationGetRelationName(rel)); |
- |
| 351 |
- |
|
- |
| 352 |
- |
if (OidIsValid(constrrelid)) |
- |
| 353 |
- |
{ |
- |
| 354 |
- |
aclresult = pg_class_aclcheck(constrrelid, GetUserId(), |
- |
| 355 |
- |
ACL_TRIGGER); |
- |
| 356 |
- |
if (aclresult != ACLCHECK_OK) |
- |
| 357 |
- |
aclcheck_error(aclresult, get_relkind_objtype(get_rel_relkind(constrrelid)), |
- |
| 358 |
- |
get_rel_name(constrrelid)); |
- |
| 359 |
- |
} |
- |
| 360 |
- |
} |
- |
| 361 |
- |
|
- |
| 362 |
- |
/* |
- |
| 363 |
- |
* When called on a partitioned table to create a FOR EACH ROW trigger |
- |
| 364 |
- |
* that's not internal, we create one trigger for each partition, too. |
- |
| 365 |
- |
* |
- |
| 366 |
- |
* For that, we'd better hold lock on all of them ahead of time. |
- |
| 367 |
- |
*/ |
- |
| 368 |
- |
partition_recurse = !isInternal && stmt->row && |
- |
| 369 |
- |
rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE; |
- |
| 370 |
- |
if (partition_recurse) |
- |
| 371 |
- |
list_free(find_all_inheritors(RelationGetRelid(rel), |
- |
| 372 |
- |
ShareRowExclusiveLock, NULL)); |
- |
| 373 |
- |
|
- |
| 374 |
- |
/* Compute tgtype */ |
- |
| 375 |
- |
TRIGGER_CLEAR_TYPE(tgtype); |
- |
| 376 |
- |
if (stmt->row) |
- |
| 377 |
- |
TRIGGER_SETT_ROW(tgtype); |
- |
| 378 |
- |
tgtype |= stmt->timing; |
- |
| 379 |
- |
tgtype |= stmt->events; |
- |
| 380 |
- |
|
- |
| 381 |
- |
/* Disallow ROW-level TRUNCATE triggers */ |
- |
| 382 |
- |
if (TRIGGER_FOR_ROW(tgtype) && TRIGGER_FOR_TRUNCATE(tgtype)) |
- |
| 383 |
- |
ereport(ERROR, |
- |
| 384 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 385 |
- |
errmsg("TRUNCATE FOR EACH ROW triggers are not supported"))); |
- |
| 386 |
- |
|
- |
| 387 |
- |
/* INSTEAD triggers must be row-level, and can't have WHEN or columns */ |
- |
| 388 |
- |
if (TRIGGER_FOR_INSTEAD(tgtype)) |
- |
| 389 |
- |
{ |
- |
| 390 |
- |
if (!TRIGGER_FOR_ROW(tgtype)) |
- |
| 391 |
- |
ereport(ERROR, |
- |
| 392 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 393 |
- |
errmsg("INSTEAD OF triggers must be FOR EACH ROW"))); |
- |
| 394 |
- |
if (stmt->whenClause) |
- |
| 395 |
- |
ereport(ERROR, |
- |
| 396 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 397 |
- |
errmsg("INSTEAD OF triggers cannot have WHEN conditions"))); |
- |
| 398 |
- |
if (stmt->columns != NIL) |
- |
| 399 |
- |
ereport(ERROR, |
- |
| 400 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 401 |
- |
errmsg("INSTEAD OF triggers cannot have column lists"))); |
- |
| 402 |
- |
} |
- |
| 403 |
- |
|
- |
| 404 |
- |
/* |
- |
| 405 |
- |
* We don't yet support naming ROW transition variables, but the parser |
- |
| 406 |
- |
* recognizes the syntax so we can give a nicer message here. |
- |
| 407 |
- |
* |
- |
| 408 |
- |
* Per standard, REFERENCING TABLE names are only allowed on AFTER |
- |
| 409 |
- |
* triggers. Per standard, REFERENCING ROW names are not allowed with FOR |
- |
| 410 |
- |
* EACH STATEMENT. Per standard, each OLD/NEW, ROW/TABLE permutation is |
- |
| 411 |
- |
* only allowed once. Per standard, OLD may not be specified when |
- |
| 412 |
- |
* creating a trigger only for INSERT, and NEW may not be specified when |
- |
| 413 |
- |
* creating a trigger only for DELETE. |
- |
| 414 |
- |
* |
- |
| 415 |
- |
* Notice that the standard allows an AFTER ... FOR EACH ROW trigger to |
- |
| 416 |
- |
* reference both ROW and TABLE transition data. |
- |
| 417 |
- |
*/ |
- |
| 418 |
- |
if (stmt->transitionRels != NIL) |
- |
| 419 |
- |
{ |
- |
| 420 |
- |
List *varList = stmt->transitionRels; |
- |
| 421 |
- |
ListCell *lc; |
- |
| 422 |
- |
|
- |
| 423 |
- |
foreach(lc, varList) |
- |
| 424 |
- |
{ |
- |
| 425 |
- |
TriggerTransition *tt = lfirst_node(TriggerTransition, lc); |
- |
| 426 |
- |
|
- |
| 427 |
- |
if (!(tt->isTable)) |
- |
| 428 |
- |
ereport(ERROR, |
- |
| 429 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 430 |
- |
errmsg("ROW variable naming in the REFERENCING clause is not supported"), |
- |
| 431 |
- |
errhint("Use OLD TABLE or NEW TABLE for naming transition tables."))); |
- |
| 432 |
- |
|
- |
| 433 |
- |
/* |
- |
| 434 |
- |
* Because of the above test, we omit further ROW-related testing |
- |
| 435 |
- |
* below. If we later allow naming OLD and NEW ROW variables, |
- |
| 436 |
- |
* adjustments will be needed below. |
- |
| 437 |
- |
*/ |
- |
| 438 |
- |
|
- |
| 439 |
- |
if (rel->rd_rel->relkind == RELKIND_FOREIGN_TABLE) |
- |
| 440 |
- |
ereport(ERROR, |
- |
| 441 |
- |
(errcode(ERRCODE_WRONG_OBJECT_TYPE), |
- |
| 442 |
- |
errmsg("\"%s\" is a foreign table", |
- |
| 443 |
- |
RelationGetRelationName(rel)), |
- |
| 444 |
- |
errdetail("Triggers on foreign tables cannot have transition tables."))); |
- |
| 445 |
- |
|
- |
| 446 |
- |
if (rel->rd_rel->relkind == RELKIND_VIEW) |
- |
| 447 |
- |
ereport(ERROR, |
- |
| 448 |
- |
(errcode(ERRCODE_WRONG_OBJECT_TYPE), |
- |
| 449 |
- |
errmsg("\"%s\" is a view", |
- |
| 450 |
- |
RelationGetRelationName(rel)), |
- |
| 451 |
- |
errdetail("Triggers on views cannot have transition tables."))); |
- |
| 452 |
- |
|
- |
| 453 |
- |
/* |
- |
| 454 |
- |
* We currently don't allow row-level triggers with transition |
- |
| 455 |
- |
* tables on partition or inheritance children. Such triggers |
- |
| 456 |
- |
* would somehow need to see tuples converted to the format of the |
- |
| 457 |
- |
* table they're attached to, and it's not clear which subset of |
- |
| 458 |
- |
* tuples each child should see. See also the prohibitions in |
- |
| 459 |
- |
* ATExecAttachPartition() and ATExecAddInherit(). |
- |
| 460 |
- |
*/ |
- |
| 461 |
- |
if (TRIGGER_FOR_ROW(tgtype) && has_superclass(rel->rd_id)) |
- |
| 462 |
- |
{ |
- |
| 463 |
- |
/* Use appropriate error message. */ |
- |
| 464 |
- |
if (rel->rd_rel->relispartition) |
- |
| 465 |
- |
ereport(ERROR, |
- |
| 466 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 467 |
- |
errmsg("ROW triggers with transition tables are not supported on partitions"))); |
- |
| 468 |
- |
else |
- |
| 469 |
- |
ereport(ERROR, |
- |
| 470 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 471 |
- |
errmsg("ROW triggers with transition tables are not supported on inheritance children"))); |
- |
| 472 |
- |
} |
- |
| 473 |
- |
|
- |
| 474 |
- |
if (stmt->timing != TRIGGER_TYPE_AFTER) |
- |
| 475 |
- |
ereport(ERROR, |
- |
| 476 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 477 |
- |
errmsg("transition table name can only be specified for an AFTER trigger"))); |
- |
| 478 |
- |
|
- |
| 479 |
- |
if (TRIGGER_FOR_TRUNCATE(tgtype)) |
- |
| 480 |
- |
ereport(ERROR, |
- |
| 481 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 482 |
- |
errmsg("TRUNCATE triggers with transition tables are not supported"))); |
- |
| 483 |
- |
|
- |
| 484 |
- |
/* |
- |
| 485 |
- |
* We currently don't allow multi-event triggers ("INSERT OR |
- |
| 486 |
- |
* UPDATE") with transition tables, because it's not clear how to |
- |
| 487 |
- |
* handle INSERT ... ON CONFLICT statements which can fire both |
- |
| 488 |
- |
* INSERT and UPDATE triggers. We show the inserted tuples to |
- |
| 489 |
- |
* INSERT triggers and the updated tuples to UPDATE triggers, but |
- |
| 490 |
- |
* it's not yet clear what INSERT OR UPDATE trigger should see. |
- |
| 491 |
- |
* This restriction could be lifted if we can decide on the right |
- |
| 492 |
- |
* semantics in a later release. |
- |
| 493 |
- |
*/ |
- |
| 494 |
- |
if (((TRIGGER_FOR_INSERT(tgtype) ? 1 : 0) + |
- |
| 495 |
- |
(TRIGGER_FOR_UPDATE(tgtype) ? 1 : 0) + |
- |
| 496 |
- |
(TRIGGER_FOR_DELETE(tgtype) ? 1 : 0)) != 1) |
- |
| 497 |
- |
ereport(ERROR, |
- |
| 498 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 499 |
- |
errmsg("transition tables cannot be specified for triggers with more than one event"))); |
- |
| 500 |
- |
|
- |
| 501 |
- |
/* |
- |
| 502 |
- |
* We currently don't allow column-specific triggers with |
- |
| 503 |
- |
* transition tables. Per spec, that seems to require |
- |
| 504 |
- |
* accumulating separate transition tables for each combination of |
- |
| 505 |
- |
* columns, which is a lot of work for a rather marginal feature. |
- |
| 506 |
- |
*/ |
- |
| 507 |
- |
if (stmt->columns != NIL) |
- |
| 508 |
- |
ereport(ERROR, |
- |
| 509 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 510 |
- |
errmsg("transition tables cannot be specified for triggers with column lists"))); |
- |
| 511 |
- |
|
- |
| 512 |
- |
/* |
- |
| 513 |
- |
* We disallow constraint triggers with transition tables, to |
- |
| 514 |
- |
* protect the assumption that such triggers can't be deferred. |
- |
| 515 |
- |
* See notes with AfterTriggers data structures, below. |
- |
| 516 |
- |
* |
- |
| 517 |
- |
* Currently this is enforced by the grammar, so just Assert here. |
- |
| 518 |
- |
*/ |
- |
| 519 |
- |
Assert(!stmt->isconstraint); |
- |
| 520 |
- |
|
- |
| 521 |
- |
if (tt->isNew) |
- |
| 522 |
- |
{ |
- |
| 523 |
- |
if (!(TRIGGER_FOR_INSERT(tgtype) || |
- |
| 524 |
- |
TRIGGER_FOR_UPDATE(tgtype))) |
- |
| 525 |
- |
ereport(ERROR, |
- |
| 526 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 527 |
- |
errmsg("NEW TABLE can only be specified for an INSERT or UPDATE trigger"))); |
- |
| 528 |
- |
|
- |
| 529 |
- |
if (newtablename != NULL) |
- |
| 530 |
- |
ereport(ERROR, |
- |
| 531 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 532 |
- |
errmsg("NEW TABLE cannot be specified multiple times"))); |
- |
| 533 |
- |
|
- |
| 534 |
- |
newtablename = tt->name; |
- |
| 535 |
- |
} |
- |
| 536 |
- |
else |
- |
| 537 |
- |
{ |
- |
| 538 |
- |
if (!(TRIGGER_FOR_DELETE(tgtype) || |
- |
| 539 |
- |
TRIGGER_FOR_UPDATE(tgtype))) |
- |
| 540 |
- |
ereport(ERROR, |
- |
| 541 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 542 |
- |
errmsg("OLD TABLE can only be specified for a DELETE or UPDATE trigger"))); |
- |
| 543 |
- |
|
- |
| 544 |
- |
if (oldtablename != NULL) |
- |
| 545 |
- |
ereport(ERROR, |
- |
| 546 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 547 |
- |
errmsg("OLD TABLE cannot be specified multiple times"))); |
- |
| 548 |
- |
|
- |
| 549 |
- |
oldtablename = tt->name; |
- |
| 550 |
- |
} |
- |
| 551 |
- |
} |
- |
| 552 |
- |
|
- |
| 553 |
- |
if (newtablename != NULL && oldtablename != NULL && |
- |
| 554 |
- |
strcmp(newtablename, oldtablename) == 0) |
- |
| 555 |
- |
ereport(ERROR, |
- |
| 556 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 557 |
- |
errmsg("OLD TABLE name and NEW TABLE name cannot be the same"))); |
- |
| 558 |
- |
} |
- |
| 559 |
- |
|
- |
| 560 |
- |
/* |
- |
| 561 |
- |
* Parse the WHEN clause, if any and we weren't passed an already |
- |
| 562 |
- |
* transformed one. |
- |
| 563 |
- |
* |
- |
| 564 |
- |
* Note that as a side effect, we fill whenRtable when parsing. If we got |
- |
| 565 |
- |
* an already parsed clause, this does not occur, which is what we want -- |
- |
| 566 |
- |
* no point in adding redundant dependencies below. |
- |
| 567 |
- |
*/ |
- |
| 568 |
- |
if (!whenClause && stmt->whenClause) |
- |
| 569 |
- |
{ |
- |
| 570 |
- |
ParseState *pstate; |
- |
| 571 |
- |
ParseNamespaceItem *nsitem; |
- |
| 572 |
- |
List *varList; |
- |
| 573 |
- |
ListCell *lc; |
- |
| 574 |
- |
|
- |
| 575 |
- |
/* Set up a pstate to parse with */ |
- |
| 576 |
- |
pstate = make_parsestate(NULL); |
- |
| 577 |
- |
pstate->p_sourcetext = queryString; |
- |
| 578 |
- |
|
- |
| 579 |
- |
/* |
- |
| 580 |
- |
* Set up nsitems for OLD and NEW references. |
- |
| 581 |
- |
* |
- |
| 582 |
- |
* 'OLD' must always have varno equal to 1 and 'NEW' equal to 2. |
- |
| 583 |
- |
*/ |
- |
| 584 |
- |
nsitem = addRangeTableEntryForRelation(pstate, rel, |
- |
| 585 |
- |
AccessShareLock, |
- |
| 586 |
- |
makeAlias("old", NIL), |
- |
| 587 |
- |
false, false); |
- |
| 588 |
- |
addNSItemToQuery(pstate, nsitem, false, true, true); |
- |
| 589 |
- |
nsitem = addRangeTableEntryForRelation(pstate, rel, |
- |
| 590 |
- |
AccessShareLock, |
- |
| 591 |
- |
makeAlias("new", NIL), |
- |
| 592 |
- |
false, false); |
- |
| 593 |
- |
addNSItemToQuery(pstate, nsitem, false, true, true); |
- |
| 594 |
- |
|
- |
| 595 |
183 |
if (stmt->transformed) |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 596 |
20 |
whenClause = stmt->whenClause; |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 597 |
- |
else |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 598 |
- |
{ |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 599 |
- |
/* Transform expression. Copy to be sure we don't modify original */ |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 600 |
163 |
whenClause = transformWhereClause(pstate, |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 601 |
163 |
copyObject(stmt->whenClause), |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 602 |
- |
EXPR_KIND_TRIGGER_WHEN, |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 603 |
- |
"WHEN"); |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 604 |
- |
|
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 605 |
- |
/* we have to fix its collations too */ |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 606 |
163 |
assign_expr_collations(pstate, whenClause); |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 607 |
- |
|
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 608 |
163 |
stmt->transformed = true; |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 609 |
- |
} |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 610 |
- |
|
- |
| 611 |
- |
/* |
- |
| 612 |
- |
* Check for disallowed references to OLD/NEW. |
- |
| 613 |
- |
* |
- |
| 614 |
- |
* NB: pull_var_clause is okay here only because we don't allow |
- |
| 615 |
- |
* subselects in WHEN clauses; it would fail to examine the contents |
- |
| 616 |
- |
* of subselects. |
- |
| 617 |
- |
*/ |
- |
| 618 |
- |
varList = pull_var_clause(whenClause, 0); |
- |
| 619 |
- |
foreach(lc, varList) |
- |
| 620 |
- |
{ |
- |
| 621 |
- |
Var *var = (Var *) lfirst(lc); |
- |
| 622 |
- |
|
- |
| 623 |
- |
switch (var->varno) |
- |
| 624 |
- |
{ |
- |
| 625 |
- |
case PRS2_OLD_VARNO: |
- |
| 626 |
- |
if (!TRIGGER_FOR_ROW(tgtype)) |
- |
| 627 |
- |
ereport(ERROR, |
- |
| 628 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 629 |
- |
errmsg("statement trigger's WHEN condition cannot reference column values"), |
- |
| 630 |
- |
parser_errposition(pstate, var->location))); |
- |
| 631 |
- |
if (TRIGGER_FOR_INSERT(tgtype)) |
- |
| 632 |
- |
ereport(ERROR, |
- |
| 633 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 634 |
- |
errmsg("INSERT trigger's WHEN condition cannot reference OLD values"), |
- |
| 635 |
- |
parser_errposition(pstate, var->location))); |
- |
| 636 |
- |
/* system columns are okay here */ |
- |
| 637 |
- |
break; |
- |
| 638 |
- |
case PRS2_NEW_VARNO: |
- |
| 639 |
- |
if (!TRIGGER_FOR_ROW(tgtype)) |
- |
| 640 |
- |
ereport(ERROR, |
- |
| 641 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 642 |
- |
errmsg("statement trigger's WHEN condition cannot reference column values"), |
- |
| 643 |
- |
parser_errposition(pstate, var->location))); |
- |
| 644 |
- |
if (TRIGGER_FOR_DELETE(tgtype)) |
- |
| 645 |
- |
ereport(ERROR, |
- |
| 646 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 647 |
- |
errmsg("DELETE trigger's WHEN condition cannot reference NEW values"), |
- |
| 648 |
- |
parser_errposition(pstate, var->location))); |
- |
| 649 |
- |
if (var->varattno < 0 && TRIGGER_FOR_BEFORE(tgtype)) |
- |
| 650 |
- |
ereport(ERROR, |
- |
| 651 |
- |
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |
- |
| 652 |
- |
errmsg("BEFORE trigger's WHEN condition cannot reference NEW system columns"), |
- |
| 653 |
- |
parser_errposition(pstate, var->location))); |
- |
| 654 |
- |
if (TRIGGER_FOR_BEFORE(tgtype) && |
- |
| 655 |
- |
var->varattno == 0 && |
- |
| 656 |
- |
RelationGetDescr(rel)->constr && |
- |
| 657 |
- |
(RelationGetDescr(rel)->constr->has_generated_stored || |
- |
| 658 |
- |
RelationGetDescr(rel)->constr->has_generated_virtual)) |
- |
| 659 |
- |
ereport(ERROR, |
- |
| 660 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 661 |
- |
errmsg("BEFORE trigger's WHEN condition cannot reference NEW generated columns"), |
- |
| 662 |
- |
errdetail("A whole-row reference is used and the table contains generated columns."), |
- |
| 663 |
- |
parser_errposition(pstate, var->location))); |
- |
| 664 |
- |
if (TRIGGER_FOR_BEFORE(tgtype) && |
- |
| 665 |
- |
var->varattno > 0 && |
- |
| 666 |
- |
TupleDescAttr(RelationGetDescr(rel), var->varattno - 1)->attgenerated) |
- |
| 667 |
- |
ereport(ERROR, |
- |
| 668 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 669 |
- |
errmsg("BEFORE trigger's WHEN condition cannot reference NEW generated columns"), |
- |
| 670 |
- |
errdetail("Column \"%s\" is a generated column.", |
- |
| 671 |
- |
NameStr(TupleDescAttr(RelationGetDescr(rel), var->varattno - 1)->attname)), |
- |
| 672 |
- |
parser_errposition(pstate, var->location))); |
- |
| 673 |
- |
break; |
- |
| 674 |
- |
default: |
- |
| 675 |
- |
/* can't happen without add_missing_from, so just elog */ |
- |
| 676 |
- |
elog(ERROR, "trigger WHEN condition cannot contain references to other relations"); |
- |
| 677 |
- |
break; |
- |
| 678 |
- |
} |
- |
| 679 |
- |
} |
- |
| 680 |
- |
|
- |
| 681 |
- |
/* we'll need the rtable for recordDependencyOnExpr */ |
- |
| 682 |
- |
whenRtable = pstate->p_rtable; |
- |
| 683 |
- |
|
- |
| 684 |
- |
qual = nodeToString(whenClause); |
- |
| 685 |
- |
|
- |
| 686 |
- |
free_parsestate(pstate); |
- |
| 687 |
- |
} |
- |
| 688 |
- |
else if (!whenClause) |
- |
| 689 |
- |
{ |
- |
| 690 |
- |
whenClause = NULL; |
- |
| 691 |
- |
whenRtable = NIL; |
- |
| 692 |
- |
qual = NULL; |
- |
| 693 |
- |
} |
- |
| 694 |
- |
else |
- |
| 695 |
- |
{ |
- |
| 696 |
- |
qual = nodeToString(whenClause); |
- |
| 697 |
- |
whenRtable = NIL; |
- |
| 698 |
- |
} |
- |
| 699 |
- |
|
- |
| 700 |
- |
/* |
- |
| 701 |
- |
* Find and validate the trigger function. |
- |
| 702 |
- |
*/ |
- |
| 703 |
- |
if (!OidIsValid(funcoid)) |
- |
| 704 |
- |
funcoid = LookupFuncName(stmt->funcname, 0, NULL, false); |
- |
| 705 |
- |
if (!isInternal) |
- |
| 706 |
- |
{ |
- |
| 707 |
- |
aclresult = object_aclcheck(ProcedureRelationId, funcoid, GetUserId(), ACL_EXECUTE); |
- |
| 708 |
- |
if (aclresult != ACLCHECK_OK) |
- |
| 709 |
- |
aclcheck_error(aclresult, OBJECT_FUNCTION, |
- |
| 710 |
- |
NameListToString(stmt->funcname)); |
- |
| 711 |
- |
} |
- |
| 712 |
- |
funcrettype = get_func_rettype(funcoid); |
- |
| 713 |
- |
if (funcrettype != TRIGGEROID) |
- |
| 714 |
- |
ereport(ERROR, |
- |
| 715 |
- |
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION), |
- |
| 716 |
- |
errmsg("function %s must return type %s", |
- |
| 717 |
- |
NameListToString(stmt->funcname), "trigger"))); |
- |
| 718 |
- |
|
- |
| 719 |
- |
/* |
- |
| 720 |
- |
* Scan pg_trigger to see if there is already a trigger of the same name. |
- |
| 721 |
- |
* Skip this for internally generated triggers, since we'll modify the |
- |
| 722 |
- |
* name to be unique below. |
- |
| 723 |
- |
* |
- |
| 724 |
- |
* NOTE that this is cool only because we have ShareRowExclusiveLock on |
- |
| 725 |
- |
* the relation, so the trigger set won't be changing underneath us. |
- |
| 726 |
- |
*/ |
- |
| 727 |
- |
tgrel = table_open(TriggerRelationId, RowExclusiveLock); |
- |
| 728 |
- |
if (!isInternal) |
- |
| 729 |
- |
{ |
- |
| 730 |
- |
ScanKeyData skeys[2]; |
- |
| 731 |
- |
SysScanDesc tgscan; |
- |
| 732 |
- |
|
- |
| 733 |
- |
ScanKeyInit(&skeys[0], |
- |
| 734 |
- |
Anum_pg_trigger_tgrelid, |
- |
| 735 |
- |
BTEqualStrategyNumber, F_OIDEQ, |
- |
| 736 |
- |
ObjectIdGetDatum(RelationGetRelid(rel))); |
- |
| 737 |
- |
|
- |
| 738 |
- |
ScanKeyInit(&skeys[1], |
- |
| 739 |
- |
Anum_pg_trigger_tgname, |
- |
| 740 |
- |
BTEqualStrategyNumber, F_NAMEEQ, |
- |
| 741 |
- |
CStringGetDatum(stmt->trigname)); |
- |
| 742 |
- |
|
- |
| 743 |
- |
tgscan = systable_beginscan(tgrel, TriggerRelidNameIndexId, true, |
- |
| 744 |
- |
NULL, 2, skeys); |
- |
| 745 |
- |
|
- |
| 746 |
- |
/* There should be at most one matching tuple */ |
- |
| 747 |
- |
if (HeapTupleIsValid(tuple = systable_getnext(tgscan))) |
- |
| 748 |
- |
{ |
- |
| 749 |
- |
Form_pg_trigger oldtrigger = (Form_pg_trigger) GETSTRUCT(tuple); |
- |
| 750 |
- |
|
- |
| 751 |
- |
trigoid = oldtrigger->oid; |
- |
| 752 |
- |
existing_constraint_oid = oldtrigger->tgconstraint; |
- |
| 753 |
- |
existing_isInternal = oldtrigger->tgisinternal; |
- |
| 754 |
- |
existing_isClone = OidIsValid(oldtrigger->tgparentid); |
- |
| 755 |
- |
trigger_exists = true; |
- |
| 756 |
- |
/* copy the tuple to use in CatalogTupleUpdate() */ |
- |
| 757 |
- |
tuple = heap_copytuple(tuple); |
- |
| 758 |
- |
} |
- |
| 759 |
- |
systable_endscan(tgscan); |
- |
| 760 |
- |
} |
- |
| 761 |
- |
|
- |
| 762 |
- |
if (!trigger_exists) |
- |
| 763 |
- |
{ |
- |
| 764 |
- |
/* Generate the OID for the new trigger. */ |
- |
| 765 |
- |
trigoid = GetNewOidWithIndex(tgrel, TriggerOidIndexId, |
- |
| 766 |
- |
Anum_pg_trigger_oid); |
- |
| 767 |
- |
} |
- |
| 768 |
- |
else |
- |
| 769 |
- |
{ |
- |
| 770 |
- |
/* |
- |
| 771 |
- |
* If OR REPLACE was specified, we'll replace the old trigger; |
- |
| 772 |
- |
* otherwise complain about the duplicate name. |
- |
| 773 |
- |
*/ |
- |
| 774 |
- |
if (!stmt->replace) |
- |
| 775 |
- |
ereport(ERROR, |
- |
| 776 |
- |
(errcode(ERRCODE_DUPLICATE_OBJECT), |
- |
| 777 |
- |
errmsg("trigger \"%s\" for relation \"%s\" already exists", |
- |
| 778 |
- |
stmt->trigname, RelationGetRelationName(rel)))); |
- |
| 779 |
- |
|
- |
| 780 |
- |
/* |
- |
| 781 |
- |
* An internal trigger or a child trigger (isClone) cannot be replaced |
- |
| 782 |
- |
* by a user-defined trigger. However, skip this test when |
- |
| 783 |
- |
* in_partition, because then we're recursing from a partitioned table |
- |
| 784 |
- |
* and the check was made at the parent level. |
- |
| 785 |
- |
*/ |
- |
| 786 |
- |
if ((existing_isInternal || existing_isClone) && |
- |
| 787 |
- |
!isInternal && !in_partition) |
- |
| 788 |
- |
ereport(ERROR, |
- |
| 789 |
- |
(errcode(ERRCODE_DUPLICATE_OBJECT), |
- |
| 790 |
- |
errmsg("trigger \"%s\" for relation \"%s\" is an internal or a child trigger", |
- |
| 791 |
- |
stmt->trigname, RelationGetRelationName(rel)))); |
- |
| 792 |
- |
|
- |
| 793 |
- |
/* |
- |
| 794 |
- |
* It is not allowed to replace with a constraint trigger; gram.y |
- |
| 795 |
- |
* should have enforced this already. |
- |
| 796 |
- |
*/ |
- |
| 797 |
- |
Assert(!stmt->isconstraint); |
- |
| 798 |
- |
|
- |
| 799 |
- |
/* |
- |
| 800 |
- |
* It is not allowed to replace an existing constraint trigger, |
- |
| 801 |
- |
* either. (The reason for these restrictions is partly that it seems |
- |
| 802 |
- |
* difficult to deal with pending trigger events in such cases, and |
- |
| 803 |
- |
* partly that the command might imply changing the constraint's |
- |
| 804 |
- |
* properties as well, which doesn't seem nice.) |
- |
| 805 |
- |
*/ |
- |
| 806 |
- |
if (OidIsValid(existing_constraint_oid)) |
- |
| 807 |
- |
ereport(ERROR, |
- |
| 808 |
- |
(errcode(ERRCODE_DUPLICATE_OBJECT), |
- |
| 809 |
- |
errmsg("trigger \"%s\" for relation \"%s\" is a constraint trigger", |
- |
| 810 |
- |
stmt->trigname, RelationGetRelationName(rel)))); |
- |
| 811 |
- |
} |
- |
| 812 |
- |
|
- |
| 813 |
- |
/* |
- |
| 814 |
- |
* If it's a user-entered CREATE CONSTRAINT TRIGGER command, make a |
- |
| 815 |
- |
* corresponding pg_constraint entry. |
- |
| 816 |
- |
*/ |
- |
| 817 |
- |
if (stmt->isconstraint && !OidIsValid(constraintOid)) |
- |
| 818 |
- |
{ |
- |
| 819 |
- |
/* Internal callers should have made their own constraints */ |
- |
| 820 |
- |
Assert(!isInternal); |
- |
| 821 |
- |
constraintOid = CreateConstraintEntry(stmt->trigname, |
- |
| 822 |
- |
RelationGetNamespace(rel), |
- |
| 823 |
- |
CONSTRAINT_TRIGGER, |
- |
| 824 |
- |
stmt->deferrable, |
- |
| 825 |
- |
stmt->initdeferred, |
- |
| 826 |
- |
true, /* Is Enforced */ |
- |
| 827 |
- |
true, |
- |
| 828 |
- |
InvalidOid, /* no parent */ |
- |
| 829 |
- |
RelationGetRelid(rel), |
- |
| 830 |
- |
NULL, /* no conkey */ |
- |
| 831 |
- |
0, |
- |
| 832 |
- |
0, |
- |
| 833 |
- |
InvalidOid, /* no domain */ |
- |
| 834 |
- |
InvalidOid, /* no index */ |
- |
| 835 |
- |
InvalidOid, /* no foreign key */ |
- |
| 836 |
- |
NULL, |
- |
| 837 |
- |
NULL, |
- |
| 838 |
- |
NULL, |
- |
| 839 |
- |
NULL, |
- |
| 840 |
- |
0, |
- |
| 841 |
- |
' ', |
- |
| 842 |
- |
' ', |
- |
| 843 |
- |
NULL, |
- |
| 844 |
- |
0, |
- |
| 845 |
- |
' ', |
- |
| 846 |
- |
NULL, /* no exclusion */ |
- |
| 847 |
- |
NULL, /* no check constraint */ |
- |
| 848 |
- |
NULL, |
- |
| 849 |
- |
true, /* islocal */ |
- |
| 850 |
- |
0, /* inhcount */ |
- |
| 851 |
- |
true, /* noinherit */ |
- |
| 852 |
- |
false, /* conperiod */ |
- |
| 853 |
- |
isInternal); /* is_internal */ |
- |
| 854 |
- |
} |
- |
| 855 |
- |
|
- |
| 856 |
- |
/* |
- |
| 857 |
- |
* If trigger is internally generated, modify the provided trigger name to |
- |
| 858 |
- |
* ensure uniqueness by appending the trigger OID. (Callers will usually |
- |
| 859 |
- |
* supply a simple constant trigger name in these cases.) |
- |
| 860 |
- |
*/ |
- |
| 861 |
- |
if (isInternal) |
- |
| 862 |
- |
{ |
- |
| 863 |
- |
snprintf(internaltrigname, sizeof(internaltrigname), |
- |
| 864 |
- |
"%s_%u", stmt->trigname, trigoid); |
- |
| 865 |
- |
trigname = internaltrigname; |
- |
| 866 |
- |
} |
- |
| 867 |
- |
else |
- |
| 868 |
- |
{ |
- |
| 869 |
- |
/* user-defined trigger; use the specified trigger name as-is */ |
- |
| 870 |
- |
trigname = stmt->trigname; |
- |
| 871 |
- |
} |
- |
| 872 |
- |
|
- |
| 873 |
- |
/* |
- |
| 874 |
- |
* Build the new pg_trigger tuple. |
- |
| 875 |
- |
*/ |
- |
| 876 |
- |
memset(nulls, false, sizeof(nulls)); |
- |
| 877 |
- |
|
- |
| 878 |
- |
values[Anum_pg_trigger_oid - 1] = ObjectIdGetDatum(trigoid); |
- |
| 879 |
- |
values[Anum_pg_trigger_tgrelid - 1] = ObjectIdGetDatum(RelationGetRelid(rel)); |
- |
| 880 |
- |
values[Anum_pg_trigger_tgparentid - 1] = ObjectIdGetDatum(parentTriggerOid); |
- |
| 881 |
- |
values[Anum_pg_trigger_tgname - 1] = DirectFunctionCall1(namein, |
- |
| 882 |
- |
CStringGetDatum(trigname)); |
- |
| 883 |
- |
values[Anum_pg_trigger_tgfoid - 1] = ObjectIdGetDatum(funcoid); |
- |
| 884 |
- |
values[Anum_pg_trigger_tgtype - 1] = Int16GetDatum(tgtype); |
- |
| 885 |
- |
values[Anum_pg_trigger_tgenabled - 1] = CharGetDatum(trigger_fires_when); |
- |
| 886 |
- |
values[Anum_pg_trigger_tgisinternal - 1] = BoolGetDatum(isInternal); |
- |
| 887 |
- |
values[Anum_pg_trigger_tgconstrrelid - 1] = ObjectIdGetDatum(constrrelid); |
- |
| 888 |
- |
values[Anum_pg_trigger_tgconstrindid - 1] = ObjectIdGetDatum(indexOid); |
- |
| 889 |
- |
values[Anum_pg_trigger_tgconstraint - 1] = ObjectIdGetDatum(constraintOid); |
- |
| 890 |
- |
values[Anum_pg_trigger_tgdeferrable - 1] = BoolGetDatum(stmt->deferrable); |
- |
| 891 |
- |
values[Anum_pg_trigger_tginitdeferred - 1] = BoolGetDatum(stmt->initdeferred); |
- |
| 892 |
- |
|
- |
| 893 |
- |
if (stmt->args) |
- |
| 894 |
- |
{ |
- |
| 895 |
- |
ListCell *le; |
- |
| 896 |
- |
char *args; |
- |
| 897 |
- |
int16 nargs = list_length(stmt->args); |
- |
| 898 |
- |
int len = 0; |
- |
| 899 |
- |
|
- |
| 900 |
- |
foreach(le, stmt->args) |
- |
| 901 |
- |
{ |
- |
| 902 |
- |
char *ar = strVal(lfirst(le)); |
- |
| 903 |
- |
|
- |
| 904 |
- |
len += strlen(ar) + 4; |
- |
| 905 |
- |
for (; *ar; ar++) |
- |
| 906 |
- |
{ |
- |
| 907 |
- |
if (*ar == '\\') |
- |
| 908 |
- |
len++; |
- |
| 909 |
- |
} |
- |
| 910 |
- |
} |
- |
| 911 |
- |
args = (char *) palloc(len + 1); |
- |
| 912 |
- |
args[0] = '\0'; |
- |
| 913 |
- |
foreach(le, stmt->args) |
- |
| 914 |
- |
{ |
- |
| 915 |
- |
char *s = strVal(lfirst(le)); |
- |
| 916 |
- |
char *d = args + strlen(args); |
- |
| 917 |
- |
|
- |
| 918 |
- |
while (*s) |
- |
| 919 |
- |
{ |
- |
| 920 |
- |
if (*s == '\\') |
- |
| 921 |
- |
*d++ = '\\'; |
- |
| 922 |
- |
*d++ = *s++; |
- |
| 923 |
- |
} |
- |
| 924 |
- |
strcpy(d, "\\000"); |
- |
| 925 |
- |
} |
- |
| 926 |
- |
values[Anum_pg_trigger_tgnargs - 1] = Int16GetDatum(nargs); |
- |
| 927 |
- |
values[Anum_pg_trigger_tgargs - 1] = DirectFunctionCall1(byteain, |
- |
| 928 |
- |
CStringGetDatum(args)); |
- |
| 929 |
- |
} |
- |
| 930 |
- |
else |
- |
| 931 |
- |
{ |
- |
| 932 |
- |
values[Anum_pg_trigger_tgnargs - 1] = Int16GetDatum(0); |
- |
| 933 |
- |
values[Anum_pg_trigger_tgargs - 1] = DirectFunctionCall1(byteain, |
- |
| 934 |
- |
CStringGetDatum("")); |
- |
| 935 |
- |
} |
- |
| 936 |
- |
|
- |
| 937 |
- |
/* build column number array if it's a column-specific trigger */ |
- |
| 938 |
- |
ncolumns = list_length(stmt->columns); |
- |
| 939 |
- |
if (ncolumns == 0) |
- |
| 940 |
- |
columns = NULL; |
- |
| 941 |
- |
else |
- |
| 942 |
- |
{ |
- |
| 943 |
- |
ListCell *cell; |
- |
| 944 |
- |
int i = 0; |
- |
| 945 |
- |
|
- |
| 946 |
- |
columns = (int16 *) palloc(ncolumns * sizeof(int16)); |
- |
| 947 |
- |
foreach(cell, stmt->columns) |
- |
| 948 |
- |
{ |
- |
| 949 |
- |
char *name = strVal(lfirst(cell)); |
- |
| 950 |
- |
int16 attnum; |
- |
| 951 |
- |
int j; |
- |
| 952 |
- |
|
- |
| 953 |
- |
/* Lookup column name. System columns are not allowed */ |
- |
| 954 |
- |
attnum = attnameAttNum(rel, name, false); |
- |
| 955 |
- |
if (attnum == InvalidAttrNumber) |
- |
| 956 |
- |
ereport(ERROR, |
- |
| 957 |
- |
(errcode(ERRCODE_UNDEFINED_COLUMN), |
- |
| 958 |
- |
errmsg("column \"%s\" of relation \"%s\" does not exist", |
- |
| 959 |
- |
name, RelationGetRelationName(rel)))); |
- |
| 960 |
- |
|
- |
| 961 |
- |
/* Check for duplicates */ |
- |
| 962 |
- |
for (j = i - 1; j >= 0; j--) |
- |
| 963 |
- |
{ |
- |
| 964 |
- |
if (columns[j] == attnum) |
- |
| 965 |
- |
ereport(ERROR, |
- |
| 966 |
- |
(errcode(ERRCODE_DUPLICATE_COLUMN), |
- |
| 967 |
- |
errmsg("column \"%s\" specified more than once", |
- |
| 968 |
- |
name))); |
- |
| 969 |
- |
} |
- |
| 970 |
- |
|
- |
| 971 |
- |
columns[i++] = attnum; |
- |
| 972 |
- |
} |
- |
| 973 |
- |
} |
- |
| 974 |
- |
tgattr = buildint2vector(columns, ncolumns); |
- |
| 975 |
- |
values[Anum_pg_trigger_tgattr - 1] = PointerGetDatum(tgattr); |
- |
| 976 |
- |
|
- |
| 977 |
- |
/* set tgqual if trigger has WHEN clause */ |
- |
| 978 |
- |
if (qual) |
- |
| 979 |
- |
values[Anum_pg_trigger_tgqual - 1] = CStringGetTextDatum(qual); |
- |
| 980 |
- |
else |
- |
| 981 |
- |
nulls[Anum_pg_trigger_tgqual - 1] = true; |
- |
| 982 |
- |
|
- |
| 983 |
- |
if (oldtablename) |
- |
| 984 |
- |
values[Anum_pg_trigger_tgoldtable - 1] = DirectFunctionCall1(namein, |
- |
| 985 |
- |
CStringGetDatum(oldtablename)); |
- |
| 986 |
- |
else |
- |
| 987 |
- |
nulls[Anum_pg_trigger_tgoldtable - 1] = true; |
- |
| 988 |
- |
if (newtablename) |
- |
| 989 |
- |
values[Anum_pg_trigger_tgnewtable - 1] = DirectFunctionCall1(namein, |
- |
| 990 |
- |
CStringGetDatum(newtablename)); |
- |
| 991 |
- |
else |
- |
| 992 |
- |
nulls[Anum_pg_trigger_tgnewtable - 1] = true; |
- |
| 993 |
- |
|
- |
| 994 |
- |
/* |
- |
| 995 |
- |
* Insert or replace tuple in pg_trigger. |
- |
| 996 |
- |
*/ |
- |
| 997 |
- |
if (!trigger_exists) |
- |
| 998 |
- |
{ |
- |
| 999 |
- |
tuple = heap_form_tuple(tgrel->rd_att, values, nulls); |
- |
| 1000 |
- |
CatalogTupleInsert(tgrel, tuple); |
- |
| 1001 |
- |
} |
- |
| 1002 |
- |
else |
- |
| 1003 |
- |
{ |
- |
| 1004 |
- |
HeapTuple newtup; |
- |
| 1005 |
- |
|
- |
| 1006 |
- |
newtup = heap_form_tuple(tgrel->rd_att, values, nulls); |
- |
| 1007 |
- |
CatalogTupleUpdate(tgrel, &tuple->t_self, newtup); |
- |
| 1008 |
- |
heap_freetuple(newtup); |
- |
| 1009 |
- |
} |
- |
| 1010 |
- |
|
- |
| 1011 |
- |
heap_freetuple(tuple); /* free either original or new tuple */ |
- |
| 1012 |
- |
table_close(tgrel, RowExclusiveLock); |
- |
| 1013 |
- |
|
- |
| 1014 |
- |
pfree(DatumGetPointer(values[Anum_pg_trigger_tgname - 1])); |
- |
| 1015 |
- |
pfree(DatumGetPointer(values[Anum_pg_trigger_tgargs - 1])); |
- |
| 1016 |
- |
pfree(DatumGetPointer(values[Anum_pg_trigger_tgattr - 1])); |
- |
| 1017 |
- |
if (oldtablename) |
- |
| 1018 |
- |
pfree(DatumGetPointer(values[Anum_pg_trigger_tgoldtable - 1])); |
- |
| 1019 |
- |
if (newtablename) |
- |
| 1020 |
- |
pfree(DatumGetPointer(values[Anum_pg_trigger_tgnewtable - 1])); |
- |
| 1021 |
- |
|
- |
| 1022 |
- |
/* |
- |
| 1023 |
- |
* Update relation's pg_class entry; if necessary; and if not, send an SI |
- |
| 1024 |
- |
* message to make other backends (and this one) rebuild relcache entries. |
- |
| 1025 |
- |
*/ |
- |
| 1026 |
- |
pgrel = table_open(RelationRelationId, RowExclusiveLock); |
- |
| 1027 |
- |
tuple = SearchSysCacheCopy1(RELOID, |
- |
| 1028 |
- |
ObjectIdGetDatum(RelationGetRelid(rel))); |
- |
| 1029 |
- |
if (!HeapTupleIsValid(tuple)) |
- |
| 1030 |
- |
elog(ERROR, "cache lookup failed for relation %u", |
- |
| 1031 |
- |
RelationGetRelid(rel)); |
- |
| 1032 |
- |
if (!((Form_pg_class) GETSTRUCT(tuple))->relhastriggers) |
- |
| 1033 |
- |
{ |
- |
| 1034 |
- |
((Form_pg_class) GETSTRUCT(tuple))->relhastriggers = true; |
- |
| 1035 |
- |
|
- |
| 1036 |
- |
CatalogTupleUpdate(pgrel, &tuple->t_self, tuple); |
- |
| 1037 |
- |
|
- |
| 1038 |
- |
CommandCounterIncrement(); |
- |
| 1039 |
- |
} |
- |
| 1040 |
- |
else |
- |
| 1041 |
- |
CacheInvalidateRelcacheByTuple(tuple); |
- |
| 1042 |
- |
|
- |
| 1043 |
- |
heap_freetuple(tuple); |
- |
| 1044 |
- |
table_close(pgrel, RowExclusiveLock); |
- |
| 1045 |
- |
|
- |
| 1046 |
- |
/* |
- |
| 1047 |
- |
* If we're replacing a trigger, flush all the old dependencies before |
- |
| 1048 |
- |
* recording new ones. |
- |
| 1049 |
- |
*/ |
- |
| 1050 |
- |
if (trigger_exists) |
- |
| 1051 |
- |
deleteDependencyRecordsFor(TriggerRelationId, trigoid, true); |
- |
| 1052 |
- |
|
- |
| 1053 |
- |
/* |
- |
| 1054 |
- |
* Record dependencies for trigger. Always place a normal dependency on |
- |
| 1055 |
- |
* the function. |
- |
| 1056 |
- |
*/ |
- |
| 1057 |
- |
myself.classId = TriggerRelationId; |
- |
| 1058 |
- |
myself.objectId = trigoid; |
- |
| 1059 |
- |
myself.objectSubId = 0; |
- |
| 1060 |
- |
|
- |
| 1061 |
- |
referenced.classId = ProcedureRelationId; |
- |
| 1062 |
- |
referenced.objectId = funcoid; |
- |
| 1063 |
- |
referenced.objectSubId = 0; |
- |
| 1064 |
- |
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL); |
- |
| 1065 |
- |
|
- |
| 1066 |
- |
if (isInternal && OidIsValid(constraintOid)) |
- |
| 1067 |
- |
{ |
- |
| 1068 |
- |
/* |
- |
| 1069 |
- |
* Internally-generated trigger for a constraint, so make it an |
- |
| 1070 |
- |
* internal dependency of the constraint. We can skip depending on |
- |
| 1071 |
- |
* the relation(s), as there'll be an indirect dependency via the |
- |
| 1072 |
- |
* constraint. |
- |
| 1073 |
- |
*/ |
- |
| 1074 |
- |
referenced.classId = ConstraintRelationId; |
- |
| 1075 |
- |
referenced.objectId = constraintOid; |
- |
| 1076 |
- |
referenced.objectSubId = 0; |
- |
| 1077 |
- |
recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL); |
- |
| 1078 |
- |
} |
- |
| 1079 |
- |
else |
- |
| 1080 |
- |
{ |
- |
| 1081 |
- |
/* |
- |
| 1082 |
- |
* User CREATE TRIGGER, so place dependencies. We make trigger be |
- |
| 1083 |
- |
* auto-dropped if its relation is dropped or if the FK relation is |
- |
| 1084 |
- |
* dropped. (Auto drop is compatible with our pre-7.3 behavior.) |
- |
| 1085 |
- |
*/ |
- |
| 1086 |
- |
referenced.classId = RelationRelationId; |
- |
| 1087 |
- |
referenced.objectId = RelationGetRelid(rel); |
- |
| 1088 |
- |
referenced.objectSubId = 0; |
- |
| 1089 |
- |
recordDependencyOn(&myself, &referenced, DEPENDENCY_AUTO); |
- |
| 1090 |
- |
|
- |
| 1091 |
- |
if (OidIsValid(constrrelid)) |
- |
| 1092 |
- |
{ |
- |
| 1093 |
- |
referenced.classId = RelationRelationId; |
- |
| 1094 |
- |
referenced.objectId = constrrelid; |
- |
| 1095 |
- |
referenced.objectSubId = 0; |
- |
| 1096 |
- |
recordDependencyOn(&myself, &referenced, DEPENDENCY_AUTO); |
- |
| 1097 |
- |
} |
- |
| 1098 |
- |
/* Not possible to have an index dependency in this case */ |
- |
| 1099 |
- |
Assert(!OidIsValid(indexOid)); |
- |
| 1100 |
- |
|
- |
| 1101 |
- |
/* |
- |
| 1102 |
- |
* If it's a user-specified constraint trigger, make the constraint |
- |
| 1103 |
- |
* internally dependent on the trigger instead of vice versa. |
- |
| 1104 |
- |
*/ |
- |
| 1105 |
- |
if (OidIsValid(constraintOid)) |
- |
| 1106 |
- |
{ |
- |
| 1107 |
- |
referenced.classId = ConstraintRelationId; |
- |
| 1108 |
- |
referenced.objectId = constraintOid; |
- |
| 1109 |
- |
referenced.objectSubId = 0; |
- |
| 1110 |
- |
recordDependencyOn(&referenced, &myself, DEPENDENCY_INTERNAL); |
- |
| 1111 |
- |
} |
- |
| 1112 |
- |
|
- |
| 1113 |
- |
/* |
- |
| 1114 |
- |
* If it's a partition trigger, create the partition dependencies. |
- |
| 1115 |
- |
*/ |
- |
| 1116 |
- |
if (OidIsValid(parentTriggerOid)) |
- |
| 1117 |
- |
{ |
- |
| 1118 |
- |
ObjectAddressSet(referenced, TriggerRelationId, parentTriggerOid); |
- |
| 1119 |
- |
recordDependencyOn(&myself, &referenced, DEPENDENCY_PARTITION_PRI); |
- |
| 1120 |
- |
ObjectAddressSet(referenced, RelationRelationId, RelationGetRelid(rel)); |
- |
| 1121 |
- |
recordDependencyOn(&myself, &referenced, DEPENDENCY_PARTITION_SEC); |
- |
| 1122 |
- |
} |
- |
| 1123 |
- |
} |
- |
| 1124 |
- |
|
- |
| 1125 |
- |
/* If column-specific trigger, add normal dependencies on columns */ |
- |
| 1126 |
- |
if (columns != NULL) |
- |
| 1127 |
- |
{ |
- |
| 1128 |
- |
int i; |
- |
| 1129 |
- |
|
- |
| 1130 |
- |
referenced.classId = RelationRelationId; |
- |
| 1131 |
- |
referenced.objectId = RelationGetRelid(rel); |
- |
| 1132 |
- |
for (i = 0; i < ncolumns; i++) |
- |
| 1133 |
- |
{ |
- |
| 1134 |
- |
referenced.objectSubId = columns[i]; |
- |
| 1135 |
- |
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL); |
- |
| 1136 |
- |
} |
- |
| 1137 |
- |
} |
- |
| 1138 |
- |
|
- |
| 1139 |
- |
/* |
- |
| 1140 |
- |
* If it has a WHEN clause, add dependencies on objects mentioned in the |
- |
| 1141 |
- |
* expression (eg, functions, as well as any columns used). |
- |
| 1142 |
- |
*/ |
- |
| 1143 |
- |
if (whenRtable != NIL) |
- |
| 1144 |
- |
recordDependencyOnExpr(&myself, whenClause, whenRtable, |
- |
| 1145 |
- |
DEPENDENCY_NORMAL); |
- |
| 1146 |
- |
|
- |
| 1147 |
- |
/* Post creation hook for new trigger */ |
- |
| 1148 |
- |
InvokeObjectPostCreateHookArg(TriggerRelationId, trigoid, 0, |
- |
| 1149 |
- |
isInternal); |
- |
| 1150 |
- |
|
- |
| 1151 |
- |
/* |
- |
| 1152 |
- |
* Lastly, create the trigger on child relations, if needed. |
- |
| 1153 |
- |
*/ |
- |
| 1154 |
- |
if (partition_recurse) |
- |
| 1155 |
- |
{ |
- |
| 1156 |
- |
PartitionDesc partdesc = RelationGetPartitionDesc(rel, true); |
- |
| 1157 |
- |
int i; |
- |
| 1158 |
- |
MemoryContext oldcxt, |
- |
| 1159 |
- |
perChildCxt; |
- |
| 1160 |
- |
|
- |
| 1161 |
- |
perChildCxt = AllocSetContextCreate(CurrentMemoryContext, |
- |
| 1162 |
- |
"part trig clone", |
- |
| 1163 |
- |
ALLOCSET_SMALL_SIZES); |
- |
| 1164 |
- |
|
- |
| 1165 |
- |
/* |
- |
| 1166 |
- |
* We don't currently expect to be called with a valid indexOid. If |
- |
| 1167 |
- |
* that ever changes then we'll need to write code here to find the |
- |
| 1168 |
- |
* corresponding child index. |
- |
| 1169 |
- |
*/ |
- |
| 1170 |
- |
Assert(!OidIsValid(indexOid)); |
- |
| 1171 |
- |
|
- |
| 1172 |
- |
oldcxt = MemoryContextSwitchTo(perChildCxt); |
- |
| 1173 |
- |
|
- |
| 1174 |
- |
/* Iterate to create the trigger on each existing partition */ |
- |
| 1175 |
- |
for (i = 0; i < partdesc->nparts; i++) |
- |
| 1176 |
- |
{ |
- |
| 1177 |
- |
CreateTrigStmt *childStmt; |
- |
| 1178 |
- |
Relation childTbl; |
- |
| 1179 |
- |
Node *qual; |
- |
| 1180 |
- |
|
- |
| 1181 |
- |
childTbl = table_open(partdesc->oids[i], ShareRowExclusiveLock); |
- |
| 1182 |
- |
|
- |
| 1183 |
- |
/* |
- |
| 1184 |
- |
* Initialize our fabricated parse node by copying the original |
- |
| 1185 |
- |
* one, then resetting fields that we pass separately. |
- |
| 1186 |
- |
*/ |
- |
| 1187 |
- |
childStmt = copyObject(stmt); |
- |
| 1188 |
- |
childStmt->funcname = NIL; |
- |
| 1189 |
- |
childStmt->whenClause = NULL; |
- |
| 1190 |
- |
|
- |
| 1191 |
- |
/* If there is a WHEN clause, create a modified copy of it */ |
- |
| 1192 |
- |
qual = copyObject(whenClause); |
- |
| 1193 |
- |
qual = (Node *) |
- |
| 1194 |
- |
map_partition_varattnos((List *) qual, PRS2_OLD_VARNO, |
- |
| 1195 |
- |
childTbl, rel); |
- |
| 1196 |
- |
qual = (Node *) |
- |
| 1197 |
- |
map_partition_varattnos((List *) qual, PRS2_NEW_VARNO, |
- |
| 1198 |
- |
childTbl, rel); |
- |
| 1199 |
- |
|
- |
| 1200 |
- |
CreateTriggerFiringOn(childStmt, queryString, |
- |
| 1201 |
- |
partdesc->oids[i], refRelOid, |
- |
| 1202 |
- |
InvalidOid, InvalidOid, |
- |
| 1203 |
- |
funcoid, trigoid, qual, |
- |
| 1204 |
- |
isInternal, true, trigger_fires_when); |
- |
| 1205 |
- |
|
- |
| 1206 |
- |
table_close(childTbl, NoLock); |
- |
| 1207 |
- |
|
- |
| 1208 |
- |
MemoryContextReset(perChildCxt); |
- |
| 1209 |
- |
} |
- |
| 1210 |
- |
|
- |
| 1211 |
- |
MemoryContextSwitchTo(oldcxt); |
- |
| 1212 |
- |
MemoryContextDelete(perChildCxt); |
- |
| 1213 |
- |
} |
- |
| 1214 |
- |
|
- |
| 1215 |
- |
/* Keep lock on target rel until end of xact */ |
- |
| 1216 |
- |
table_close(rel, NoLock); |
- |
| 1217 |
- |
|
- |
| 1218 |
- |
/* Add any requested comment */ |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 1219 |
13799 |
if (stmt->trigcomment != NULL) |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 1220 |
5 |
CreateComments(trigoid, TriggerRelationId, 0, |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 1221 |
5 |
stmt->trigcomment); |
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 1222 |
- |
|
e73f551CREATE TABLE LIKE INCLUDING TRIGGERS |
| 1223 |
- |
return myself; |
- |
| 1224 |
- |
} |
- |