TLA Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * opclasscmds.c
4 : *
5 : * Routines for opclass (and opfamily) manipulation commands
6 : *
7 : * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
8 : * Portions Copyright (c) 1994, Regents of the University of California
9 : *
10 : *
11 : * IDENTIFICATION
12 : * src/backend/commands/opclasscmds.c
13 : *
14 : *-------------------------------------------------------------------------
15 : */
16 : #include "postgres.h"
17 :
18 : #include <limits.h>
19 :
20 : #include "access/genam.h"
21 : #include "access/hash.h"
22 : #include "access/htup_details.h"
23 : #include "access/nbtree.h"
24 : #include "access/sysattr.h"
25 : #include "access/table.h"
26 : #include "catalog/catalog.h"
27 : #include "catalog/dependency.h"
28 : #include "catalog/indexing.h"
29 : #include "catalog/objectaccess.h"
30 : #include "catalog/pg_am.h"
31 : #include "catalog/pg_amop.h"
32 : #include "catalog/pg_amproc.h"
33 : #include "catalog/pg_namespace.h"
34 : #include "catalog/pg_opclass.h"
35 : #include "catalog/pg_operator.h"
36 : #include "catalog/pg_opfamily.h"
37 : #include "catalog/pg_proc.h"
38 : #include "catalog/pg_type.h"
39 : #include "commands/alter.h"
40 : #include "commands/defrem.h"
41 : #include "commands/event_trigger.h"
42 : #include "miscadmin.h"
43 : #include "parser/parse_func.h"
44 : #include "parser/parse_oper.h"
45 : #include "parser/parse_type.h"
46 : #include "utils/builtins.h"
47 : #include "utils/fmgroids.h"
48 : #include "utils/lsyscache.h"
49 : #include "utils/rel.h"
50 : #include "utils/syscache.h"
51 :
52 : static void AlterOpFamilyAdd(AlterOpFamilyStmt *stmt,
53 : Oid amoid, Oid opfamilyoid,
54 : int maxOpNumber, int maxProcNumber,
55 : int optsProcNumber, List *items);
56 : static void AlterOpFamilyDrop(AlterOpFamilyStmt *stmt,
57 : Oid amoid, Oid opfamilyoid,
58 : int maxOpNumber, int maxProcNumber,
59 : List *items);
60 : static void processTypesSpec(List *args, Oid *lefttype, Oid *righttype);
61 : static void assignOperTypes(OpFamilyMember *member, Oid amoid, Oid typeoid);
62 : static void assignProcTypes(OpFamilyMember *member, Oid amoid, Oid typeoid,
63 : int opclassOptsProcNum);
64 : static void addFamilyMember(List **list, OpFamilyMember *member);
65 : static void storeOperators(List *opfamilyname, Oid amoid, Oid opfamilyoid,
66 : List *operators, bool isAdd);
67 : static void storeProcedures(List *opfamilyname, Oid amoid, Oid opfamilyoid,
68 : List *procedures, bool isAdd);
69 : static void dropOperators(List *opfamilyname, Oid amoid, Oid opfamilyoid,
70 : List *operators);
71 : static void dropProcedures(List *opfamilyname, Oid amoid, Oid opfamilyoid,
72 : List *procedures);
73 :
74 : /*
75 : * OpFamilyCacheLookup
76 : * Look up an existing opfamily by name.
77 : *
78 : * Returns a syscache tuple reference, or NULL if not found.
79 : */
80 : static HeapTuple
81 CBC 410 : OpFamilyCacheLookup(Oid amID, List *opfamilyname, bool missing_ok)
82 : {
83 : char *schemaname;
84 : char *opfname;
85 : HeapTuple htup;
86 :
87 : /* deconstruct the name list */
88 410 : DeconstructQualifiedName(opfamilyname, &schemaname, &opfname);
89 :
90 410 : if (schemaname)
91 : {
92 : /* Look in specific schema only */
93 : Oid namespaceId;
94 :
95 49 : namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
96 46 : if (!OidIsValid(namespaceId))
97 3 : htup = NULL;
98 : else
99 43 : htup = SearchSysCache3(OPFAMILYAMNAMENSP,
100 : ObjectIdGetDatum(amID),
101 : PointerGetDatum(opfname),
102 : ObjectIdGetDatum(namespaceId));
103 : }
104 : else
105 : {
106 : /* Unqualified opfamily name, so search the search path */
107 361 : Oid opfID = OpfamilynameGetOpfid(amID, opfname);
108 :
109 361 : if (!OidIsValid(opfID))
110 6 : htup = NULL;
111 : else
112 355 : htup = SearchSysCache1(OPFAMILYOID, ObjectIdGetDatum(opfID));
113 : }
114 :
115 407 : if (!HeapTupleIsValid(htup) && !missing_ok)
116 : {
117 : HeapTuple amtup;
118 :
119 3 : amtup = SearchSysCache1(AMOID, ObjectIdGetDatum(amID));
120 3 : if (!HeapTupleIsValid(amtup))
121 UBC 0 : elog(ERROR, "cache lookup failed for access method %u", amID);
122 CBC 3 : ereport(ERROR,
123 : (errcode(ERRCODE_UNDEFINED_OBJECT),
124 : errmsg("operator family \"%s\" does not exist for access method \"%s\"",
125 : NameListToString(opfamilyname),
126 : NameStr(((Form_pg_am) GETSTRUCT(amtup))->amname))));
127 : }
128 :
129 404 : return htup;
130 : }
131 :
132 : /*
133 : * get_opfamily_oid
134 : * find an opfamily OID by possibly qualified name
135 : *
136 : * If not found, returns InvalidOid if missing_ok, else throws error.
137 : */
138 : Oid
139 410 : get_opfamily_oid(Oid amID, List *opfamilyname, bool missing_ok)
140 : {
141 : HeapTuple htup;
142 : Form_pg_opfamily opfamform;
143 : Oid opfID;
144 :
145 410 : htup = OpFamilyCacheLookup(amID, opfamilyname, missing_ok);
146 404 : if (!HeapTupleIsValid(htup))
147 6 : return InvalidOid;
148 398 : opfamform = (Form_pg_opfamily) GETSTRUCT(htup);
149 398 : opfID = opfamform->oid;
150 398 : ReleaseSysCache(htup);
151 :
152 398 : return opfID;
153 : }
154 :
155 : /*
156 : * OpClassCacheLookup
157 : * Look up an existing opclass by name.
158 : *
159 : * Returns a syscache tuple reference, or NULL if not found.
160 : */
161 : static HeapTuple
162 107 : OpClassCacheLookup(Oid amID, List *opclassname, bool missing_ok)
163 : {
164 : char *schemaname;
165 : char *opcname;
166 : HeapTuple htup;
167 :
168 : /* deconstruct the name list */
169 107 : DeconstructQualifiedName(opclassname, &schemaname, &opcname);
170 :
171 107 : if (schemaname)
172 : {
173 : /* Look in specific schema only */
174 : Oid namespaceId;
175 :
176 13 : namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
177 13 : if (!OidIsValid(namespaceId))
178 3 : htup = NULL;
179 : else
180 10 : htup = SearchSysCache3(CLAAMNAMENSP,
181 : ObjectIdGetDatum(amID),
182 : PointerGetDatum(opcname),
183 : ObjectIdGetDatum(namespaceId));
184 : }
185 : else
186 : {
187 : /* Unqualified opclass name, so search the search path */
188 94 : Oid opcID = OpclassnameGetOpcid(amID, opcname);
189 :
190 94 : if (!OidIsValid(opcID))
191 6 : htup = NULL;
192 : else
193 88 : htup = SearchSysCache1(CLAOID, ObjectIdGetDatum(opcID));
194 : }
195 :
196 107 : if (!HeapTupleIsValid(htup) && !missing_ok)
197 : {
198 : HeapTuple amtup;
199 :
200 3 : amtup = SearchSysCache1(AMOID, ObjectIdGetDatum(amID));
201 3 : if (!HeapTupleIsValid(amtup))
202 UBC 0 : elog(ERROR, "cache lookup failed for access method %u", amID);
203 CBC 3 : ereport(ERROR,
204 : (errcode(ERRCODE_UNDEFINED_OBJECT),
205 : errmsg("operator class \"%s\" does not exist for access method \"%s\"",
206 : NameListToString(opclassname),
207 : NameStr(((Form_pg_am) GETSTRUCT(amtup))->amname))));
208 : }
209 :
210 104 : return htup;
211 : }
212 :
213 : /*
214 : * get_opclass_oid
215 : * find an opclass OID by possibly qualified name
216 : *
217 : * If not found, returns InvalidOid if missing_ok, else throws error.
218 : */
219 : Oid
220 107 : get_opclass_oid(Oid amID, List *opclassname, bool missing_ok)
221 : {
222 : HeapTuple htup;
223 : Form_pg_opclass opcform;
224 : Oid opcID;
225 :
226 107 : htup = OpClassCacheLookup(amID, opclassname, missing_ok);
227 104 : if (!HeapTupleIsValid(htup))
228 6 : return InvalidOid;
229 98 : opcform = (Form_pg_opclass) GETSTRUCT(htup);
230 98 : opcID = opcform->oid;
231 98 : ReleaseSysCache(htup);
232 :
233 98 : return opcID;
234 : }
235 :
236 : /*
237 : * CreateOpFamily
238 : * Internal routine to make the catalog entry for a new operator family.
239 : *
240 : * Caller must have done permissions checks etc. already.
241 : */
242 : static ObjectAddress
243 229 : CreateOpFamily(CreateOpFamilyStmt *stmt, const char *opfname,
244 : Oid namespaceoid, Oid amoid)
245 : {
246 : Oid opfamilyoid;
247 : Relation rel;
248 : HeapTuple tup;
249 : Datum values[Natts_pg_opfamily];
250 : bool nulls[Natts_pg_opfamily];
251 : NameData opfName;
252 : ObjectAddress myself,
253 : referenced;
254 :
255 229 : rel = table_open(OperatorFamilyRelationId, RowExclusiveLock);
256 :
257 : /*
258 : * Make sure there is no existing opfamily of this name (this is just to
259 : * give a more friendly error message than "duplicate key").
260 : */
261 229 : if (SearchSysCacheExists3(OPFAMILYAMNAMENSP,
262 : ObjectIdGetDatum(amoid),
263 : CStringGetDatum(opfname),
264 : ObjectIdGetDatum(namespaceoid)))
265 UBC 0 : ereport(ERROR,
266 : (errcode(ERRCODE_DUPLICATE_OBJECT),
267 : errmsg("operator family \"%s\" for access method \"%s\" already exists",
268 : opfname, stmt->amname)));
269 :
270 : /*
271 : * Okay, let's create the pg_opfamily entry.
272 : */
273 CBC 229 : memset(values, 0, sizeof(values));
274 229 : memset(nulls, false, sizeof(nulls));
275 :
276 229 : opfamilyoid = GetNewOidWithIndex(rel, OpfamilyOidIndexId,
277 : Anum_pg_opfamily_oid);
278 229 : values[Anum_pg_opfamily_oid - 1] = ObjectIdGetDatum(opfamilyoid);
279 229 : values[Anum_pg_opfamily_opfmethod - 1] = ObjectIdGetDatum(amoid);
280 229 : namestrcpy(&opfName, opfname);
281 229 : values[Anum_pg_opfamily_opfname - 1] = NameGetDatum(&opfName);
282 229 : values[Anum_pg_opfamily_opfnamespace - 1] = ObjectIdGetDatum(namespaceoid);
283 229 : values[Anum_pg_opfamily_opfowner - 1] = ObjectIdGetDatum(GetUserId());
284 :
285 229 : tup = heap_form_tuple(rel->rd_att, values, nulls);
286 :
287 229 : CatalogTupleInsert(rel, tup);
288 :
289 229 : heap_freetuple(tup);
290 :
291 : /*
292 : * Create dependencies for the opfamily proper.
293 : */
294 229 : myself.classId = OperatorFamilyRelationId;
295 229 : myself.objectId = opfamilyoid;
296 229 : myself.objectSubId = 0;
297 :
298 : /* dependency on access method */
299 229 : referenced.classId = AccessMethodRelationId;
300 229 : referenced.objectId = amoid;
301 229 : referenced.objectSubId = 0;
302 229 : recordDependencyOn(&myself, &referenced, DEPENDENCY_AUTO);
303 :
304 : /* dependency on namespace */
305 229 : referenced.classId = NamespaceRelationId;
306 229 : referenced.objectId = namespaceoid;
307 229 : referenced.objectSubId = 0;
308 229 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
309 :
310 : /* dependency on owner */
311 229 : recordDependencyOnOwner(OperatorFamilyRelationId, opfamilyoid, GetUserId());
312 :
313 : /* dependency on extension */
314 229 : recordDependencyOnCurrentExtension(&myself, false);
315 :
316 : /* Report the new operator family to possibly interested event triggers */
317 229 : EventTriggerCollectSimpleCommand(myself, InvalidObjectAddress,
318 : (Node *) stmt);
319 :
320 : /* Post creation hook for new operator family */
321 229 : InvokeObjectPostCreateHook(OperatorFamilyRelationId, opfamilyoid, 0);
322 :
323 229 : table_close(rel, RowExclusiveLock);
324 :
325 229 : return myself;
326 : }
327 :
328 : /*
329 : * DefineOpClass
330 : * Define a new index operator class.
331 : */
332 : ObjectAddress
333 183 : DefineOpClass(CreateOpClassStmt *stmt)
334 : {
335 : char *opcname; /* name of opclass we're creating */
336 : Oid amoid, /* our AM's oid */
337 : typeoid, /* indexable datatype oid */
338 : storageoid, /* storage datatype oid, if any */
339 : namespaceoid, /* namespace to create opclass in */
340 : opfamilyoid, /* oid of containing opfamily */
341 : opclassoid; /* oid of opclass we create */
342 : int maxOpNumber, /* amstrategies value */
343 : optsProcNumber, /* amoptsprocnum value */
344 : maxProcNumber; /* amsupport value */
345 : bool amstorage; /* amstorage flag */
346 : List *operators; /* OpFamilyMember list for operators */
347 : List *procedures; /* OpFamilyMember list for support procs */
348 : ListCell *l;
349 : Relation rel;
350 : HeapTuple tup;
351 : Form_pg_am amform;
352 : IndexAmRoutine *amroutine;
353 : Datum values[Natts_pg_opclass];
354 : bool nulls[Natts_pg_opclass];
355 : AclResult aclresult;
356 : NameData opcName;
357 : ObjectAddress myself,
358 : referenced;
359 :
360 : /* Convert list of names to a name and namespace */
361 183 : namespaceoid = QualifiedNameGetCreationNamespace(stmt->opclassname,
362 : &opcname);
363 :
364 : /* Check we have creation rights in target namespace */
365 GNC 183 : aclresult = object_aclcheck(NamespaceRelationId, namespaceoid, GetUserId(), ACL_CREATE);
366 CBC 183 : if (aclresult != ACLCHECK_OK)
367 UBC 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
368 0 : get_namespace_name(namespaceoid));
369 :
370 : /* Get necessary info about access method */
371 CBC 183 : tup = SearchSysCache1(AMNAME, CStringGetDatum(stmt->amname));
372 183 : if (!HeapTupleIsValid(tup))
373 UBC 0 : ereport(ERROR,
374 : (errcode(ERRCODE_UNDEFINED_OBJECT),
375 : errmsg("access method \"%s\" does not exist",
376 : stmt->amname)));
377 :
378 CBC 183 : amform = (Form_pg_am) GETSTRUCT(tup);
379 183 : amoid = amform->oid;
380 183 : amroutine = GetIndexAmRoutineByAmId(amoid, false);
381 183 : ReleaseSysCache(tup);
382 :
383 183 : maxOpNumber = amroutine->amstrategies;
384 : /* if amstrategies is zero, just enforce that op numbers fit in int16 */
385 183 : if (maxOpNumber <= 0)
386 88 : maxOpNumber = SHRT_MAX;
387 183 : maxProcNumber = amroutine->amsupport;
388 183 : optsProcNumber = amroutine->amoptsprocnum;
389 183 : amstorage = amroutine->amstorage;
390 :
391 : /* XXX Should we make any privilege check against the AM? */
392 :
393 : /*
394 : * The question of appropriate permissions for CREATE OPERATOR CLASS is
395 : * interesting. Creating an opclass is tantamount to granting public
396 : * execute access on the functions involved, since the index machinery
397 : * generally does not check access permission before using the functions.
398 : * A minimum expectation therefore is that the caller have execute
399 : * privilege with grant option. Since we don't have a way to make the
400 : * opclass go away if the grant option is revoked, we choose instead to
401 : * require ownership of the functions. It's also not entirely clear what
402 : * permissions should be required on the datatype, but ownership seems
403 : * like a safe choice.
404 : *
405 : * Currently, we require superuser privileges to create an opclass. This
406 : * seems necessary because we have no way to validate that the offered set
407 : * of operators and functions are consistent with the AM's expectations.
408 : * It would be nice to provide such a check someday, if it can be done
409 : * without solving the halting problem :-(
410 : *
411 : * XXX re-enable NOT_USED code sections below if you remove this test.
412 : */
413 183 : if (!superuser())
414 UBC 0 : ereport(ERROR,
415 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
416 : errmsg("must be superuser to create an operator class")));
417 :
418 : /* Look up the datatype */
419 CBC 183 : typeoid = typenameTypeId(NULL, stmt->datatype);
420 :
421 : #ifdef NOT_USED
422 : /* XXX this is unnecessary given the superuser check above */
423 : /* Check we have ownership of the datatype */
424 : if (!object_ownercheck(TypeRelationId, typeoid, GetUserId()))
425 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeoid);
426 : #endif
427 :
428 : /*
429 : * Look up the containing operator family, or create one if FAMILY option
430 : * was omitted and there's not a match already.
431 : */
432 183 : if (stmt->opfamilyname)
433 : {
434 22 : opfamilyoid = get_opfamily_oid(amoid, stmt->opfamilyname, false);
435 : }
436 : else
437 : {
438 : /* Lookup existing family of same name and namespace */
439 161 : tup = SearchSysCache3(OPFAMILYAMNAMENSP,
440 : ObjectIdGetDatum(amoid),
441 : PointerGetDatum(opcname),
442 : ObjectIdGetDatum(namespaceoid));
443 161 : if (HeapTupleIsValid(tup))
444 : {
445 6 : opfamilyoid = ((Form_pg_opfamily) GETSTRUCT(tup))->oid;
446 :
447 : /*
448 : * XXX given the superuser check above, there's no need for an
449 : * ownership check here
450 : */
451 6 : ReleaseSysCache(tup);
452 : }
453 : else
454 : {
455 : CreateOpFamilyStmt *opfstmt;
456 : ObjectAddress tmpAddr;
457 :
458 155 : opfstmt = makeNode(CreateOpFamilyStmt);
459 155 : opfstmt->opfamilyname = stmt->opclassname;
460 155 : opfstmt->amname = stmt->amname;
461 :
462 : /*
463 : * Create it ... again no need for more permissions ...
464 : */
465 155 : tmpAddr = CreateOpFamily(opfstmt, opcname, namespaceoid, amoid);
466 155 : opfamilyoid = tmpAddr.objectId;
467 : }
468 : }
469 :
470 183 : operators = NIL;
471 183 : procedures = NIL;
472 :
473 : /* Storage datatype is optional */
474 183 : storageoid = InvalidOid;
475 :
476 : /*
477 : * Scan the "items" list to obtain additional info.
478 : */
479 1580 : foreach(l, stmt->items)
480 : {
481 1397 : CreateOpClassItem *item = lfirst_node(CreateOpClassItem, l);
482 : Oid operOid;
483 : Oid funcOid;
484 : Oid sortfamilyOid;
485 : OpFamilyMember *member;
486 :
487 1397 : switch (item->itemtype)
488 : {
489 707 : case OPCLASS_ITEM_OPERATOR:
490 707 : if (item->number <= 0 || item->number > maxOpNumber)
491 UBC 0 : ereport(ERROR,
492 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
493 : errmsg("invalid operator number %d,"
494 : " must be between 1 and %d",
495 : item->number, maxOpNumber)));
496 CBC 707 : if (item->name->objargs != NIL)
497 181 : operOid = LookupOperWithArgs(item->name, false);
498 : else
499 : {
500 : /* Default to binary op on input datatype */
501 526 : operOid = LookupOperName(NULL, item->name->objname,
502 : typeoid, typeoid,
503 : false, -1);
504 : }
505 :
506 707 : if (item->order_family)
507 12 : sortfamilyOid = get_opfamily_oid(BTREE_AM_OID,
508 : item->order_family,
509 : false);
510 : else
511 695 : sortfamilyOid = InvalidOid;
512 :
513 : #ifdef NOT_USED
514 : /* XXX this is unnecessary given the superuser check above */
515 : /* Caller must own operator and its underlying function */
516 : if (!object_ownercheck(OperatorRelationId, operOid, GetUserId()))
517 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_OPERATOR,
518 : get_opname(operOid));
519 : funcOid = get_opcode(operOid);
520 : if (!object_ownercheck(ProcedureRelationId, funcOid, GetUserId()))
521 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
522 : get_func_name(funcOid));
523 : #endif
524 :
525 : /* Save the info */
526 707 : member = (OpFamilyMember *) palloc0(sizeof(OpFamilyMember));
527 707 : member->is_func = false;
528 707 : member->object = operOid;
529 707 : member->number = item->number;
530 707 : member->sortfamily = sortfamilyOid;
531 707 : assignOperTypes(member, amoid, typeoid);
532 707 : addFamilyMember(&operators, member);
533 707 : break;
534 594 : case OPCLASS_ITEM_FUNCTION:
535 594 : if (item->number <= 0 || item->number > maxProcNumber)
536 UBC 0 : ereport(ERROR,
537 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
538 : errmsg("invalid function number %d,"
539 : " must be between 1 and %d",
540 : item->number, maxProcNumber)));
541 CBC 594 : funcOid = LookupFuncWithArgs(OBJECT_FUNCTION, item->name, false);
542 : #ifdef NOT_USED
543 : /* XXX this is unnecessary given the superuser check above */
544 : /* Caller must own function */
545 : if (!object_ownercheck(ProcedureRelationId, funcOid, GetUserId()))
546 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
547 : get_func_name(funcOid));
548 : #endif
549 : /* Save the info */
550 594 : member = (OpFamilyMember *) palloc0(sizeof(OpFamilyMember));
551 594 : member->is_func = true;
552 594 : member->object = funcOid;
553 594 : member->number = item->number;
554 :
555 : /* allow overriding of the function's actual arg types */
556 594 : if (item->class_args)
557 UBC 0 : processTypesSpec(item->class_args,
558 : &member->lefttype, &member->righttype);
559 :
560 CBC 594 : assignProcTypes(member, amoid, typeoid, optsProcNumber);
561 594 : addFamilyMember(&procedures, member);
562 594 : break;
563 96 : case OPCLASS_ITEM_STORAGETYPE:
564 96 : if (OidIsValid(storageoid))
565 UBC 0 : ereport(ERROR,
566 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
567 : errmsg("storage type specified more than once")));
568 CBC 96 : storageoid = typenameTypeId(NULL, item->storedtype);
569 :
570 : #ifdef NOT_USED
571 : /* XXX this is unnecessary given the superuser check above */
572 : /* Check we have ownership of the datatype */
573 : if (!object_ownercheck(TypeRelationId, storageoid, GetUserId()))
574 : aclcheck_error_type(ACLCHECK_NOT_OWNER, storageoid);
575 : #endif
576 96 : break;
577 UBC 0 : default:
578 0 : elog(ERROR, "unrecognized item type: %d", item->itemtype);
579 : break;
580 : }
581 : }
582 :
583 : /*
584 : * If storagetype is specified, make sure it's legal.
585 : */
586 CBC 183 : if (OidIsValid(storageoid))
587 : {
588 : /* Just drop the spec if same as column datatype */
589 96 : if (storageoid == typeoid)
590 47 : storageoid = InvalidOid;
591 49 : else if (!amstorage)
592 UBC 0 : ereport(ERROR,
593 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
594 : errmsg("storage type cannot be different from data type for access method \"%s\"",
595 : stmt->amname)));
596 : }
597 :
598 CBC 183 : rel = table_open(OperatorClassRelationId, RowExclusiveLock);
599 :
600 : /*
601 : * Make sure there is no existing opclass of this name (this is just to
602 : * give a more friendly error message than "duplicate key").
603 : */
604 183 : if (SearchSysCacheExists3(CLAAMNAMENSP,
605 : ObjectIdGetDatum(amoid),
606 : CStringGetDatum(opcname),
607 : ObjectIdGetDatum(namespaceoid)))
608 UBC 0 : ereport(ERROR,
609 : (errcode(ERRCODE_DUPLICATE_OBJECT),
610 : errmsg("operator class \"%s\" for access method \"%s\" already exists",
611 : opcname, stmt->amname)));
612 :
613 : /*
614 : * If we are creating a default opclass, check there isn't one already.
615 : * (Note we do not restrict this test to visible opclasses; this ensures
616 : * that typcache.c can find unique solutions to its questions.)
617 : */
618 CBC 183 : if (stmt->isDefault)
619 : {
620 : ScanKeyData skey[1];
621 : SysScanDesc scan;
622 :
623 134 : ScanKeyInit(&skey[0],
624 : Anum_pg_opclass_opcmethod,
625 : BTEqualStrategyNumber, F_OIDEQ,
626 : ObjectIdGetDatum(amoid));
627 :
628 134 : scan = systable_beginscan(rel, OpclassAmNameNspIndexId, true,
629 : NULL, 1, skey);
630 :
631 3462 : while (HeapTupleIsValid(tup = systable_getnext(scan)))
632 : {
633 3328 : Form_pg_opclass opclass = (Form_pg_opclass) GETSTRUCT(tup);
634 :
635 3328 : if (opclass->opcintype == typeoid && opclass->opcdefault)
636 UBC 0 : ereport(ERROR,
637 : (errcode(ERRCODE_DUPLICATE_OBJECT),
638 : errmsg("could not make operator class \"%s\" be default for type %s",
639 : opcname,
640 : TypeNameToString(stmt->datatype)),
641 : errdetail("Operator class \"%s\" already is the default.",
642 : NameStr(opclass->opcname))));
643 : }
644 :
645 CBC 134 : systable_endscan(scan);
646 : }
647 :
648 : /*
649 : * Okay, let's create the pg_opclass entry.
650 : */
651 183 : memset(values, 0, sizeof(values));
652 183 : memset(nulls, false, sizeof(nulls));
653 :
654 183 : opclassoid = GetNewOidWithIndex(rel, OpclassOidIndexId,
655 : Anum_pg_opclass_oid);
656 183 : values[Anum_pg_opclass_oid - 1] = ObjectIdGetDatum(opclassoid);
657 183 : values[Anum_pg_opclass_opcmethod - 1] = ObjectIdGetDatum(amoid);
658 183 : namestrcpy(&opcName, opcname);
659 183 : values[Anum_pg_opclass_opcname - 1] = NameGetDatum(&opcName);
660 183 : values[Anum_pg_opclass_opcnamespace - 1] = ObjectIdGetDatum(namespaceoid);
661 183 : values[Anum_pg_opclass_opcowner - 1] = ObjectIdGetDatum(GetUserId());
662 183 : values[Anum_pg_opclass_opcfamily - 1] = ObjectIdGetDatum(opfamilyoid);
663 183 : values[Anum_pg_opclass_opcintype - 1] = ObjectIdGetDatum(typeoid);
664 183 : values[Anum_pg_opclass_opcdefault - 1] = BoolGetDatum(stmt->isDefault);
665 183 : values[Anum_pg_opclass_opckeytype - 1] = ObjectIdGetDatum(storageoid);
666 :
667 183 : tup = heap_form_tuple(rel->rd_att, values, nulls);
668 :
669 183 : CatalogTupleInsert(rel, tup);
670 :
671 183 : heap_freetuple(tup);
672 :
673 : /*
674 : * Now that we have the opclass OID, set up default dependency info for
675 : * the pg_amop and pg_amproc entries. Historically, CREATE OPERATOR CLASS
676 : * has created hard dependencies on the opclass, so that's what we use.
677 : */
678 890 : foreach(l, operators)
679 : {
680 707 : OpFamilyMember *op = (OpFamilyMember *) lfirst(l);
681 :
682 707 : op->ref_is_hard = true;
683 707 : op->ref_is_family = false;
684 707 : op->refobjid = opclassoid;
685 : }
686 777 : foreach(l, procedures)
687 : {
688 594 : OpFamilyMember *proc = (OpFamilyMember *) lfirst(l);
689 :
690 594 : proc->ref_is_hard = true;
691 594 : proc->ref_is_family = false;
692 594 : proc->refobjid = opclassoid;
693 : }
694 :
695 : /*
696 : * Let the index AM editorialize on the dependency choices. It could also
697 : * do further validation on the operators and functions, if it likes.
698 : */
699 183 : if (amroutine->amadjustmembers)
700 178 : amroutine->amadjustmembers(opfamilyoid,
701 : opclassoid,
702 : operators,
703 : procedures);
704 :
705 : /*
706 : * Now add tuples to pg_amop and pg_amproc tying in the operators and
707 : * functions. Dependencies on them are inserted, too.
708 : */
709 183 : storeOperators(stmt->opfamilyname, amoid, opfamilyoid,
710 : operators, false);
711 183 : storeProcedures(stmt->opfamilyname, amoid, opfamilyoid,
712 : procedures, false);
713 :
714 : /* let event triggers know what happened */
715 183 : EventTriggerCollectCreateOpClass(stmt, opclassoid, operators, procedures);
716 :
717 : /*
718 : * Create dependencies for the opclass proper. Note: we do not need a
719 : * dependency link to the AM, because that exists through the opfamily.
720 : */
721 183 : myself.classId = OperatorClassRelationId;
722 183 : myself.objectId = opclassoid;
723 183 : myself.objectSubId = 0;
724 :
725 : /* dependency on namespace */
726 183 : referenced.classId = NamespaceRelationId;
727 183 : referenced.objectId = namespaceoid;
728 183 : referenced.objectSubId = 0;
729 183 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
730 :
731 : /* dependency on opfamily */
732 183 : referenced.classId = OperatorFamilyRelationId;
733 183 : referenced.objectId = opfamilyoid;
734 183 : referenced.objectSubId = 0;
735 183 : recordDependencyOn(&myself, &referenced, DEPENDENCY_AUTO);
736 :
737 : /* dependency on indexed datatype */
738 183 : referenced.classId = TypeRelationId;
739 183 : referenced.objectId = typeoid;
740 183 : referenced.objectSubId = 0;
741 183 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
742 :
743 : /* dependency on storage datatype */
744 183 : if (OidIsValid(storageoid))
745 : {
746 49 : referenced.classId = TypeRelationId;
747 49 : referenced.objectId = storageoid;
748 49 : referenced.objectSubId = 0;
749 49 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
750 : }
751 :
752 : /* dependency on owner */
753 183 : recordDependencyOnOwner(OperatorClassRelationId, opclassoid, GetUserId());
754 :
755 : /* dependency on extension */
756 183 : recordDependencyOnCurrentExtension(&myself, false);
757 :
758 : /* Post creation hook for new operator class */
759 183 : InvokeObjectPostCreateHook(OperatorClassRelationId, opclassoid, 0);
760 :
761 183 : table_close(rel, RowExclusiveLock);
762 :
763 183 : return myself;
764 : }
765 :
766 :
767 : /*
768 : * DefineOpFamily
769 : * Define a new index operator family.
770 : */
771 : ObjectAddress
772 74 : DefineOpFamily(CreateOpFamilyStmt *stmt)
773 : {
774 : char *opfname; /* name of opfamily we're creating */
775 : Oid amoid, /* our AM's oid */
776 : namespaceoid; /* namespace to create opfamily in */
777 : AclResult aclresult;
778 :
779 : /* Convert list of names to a name and namespace */
780 74 : namespaceoid = QualifiedNameGetCreationNamespace(stmt->opfamilyname,
781 : &opfname);
782 :
783 : /* Check we have creation rights in target namespace */
784 GNC 74 : aclresult = object_aclcheck(NamespaceRelationId, namespaceoid, GetUserId(), ACL_CREATE);
785 CBC 74 : if (aclresult != ACLCHECK_OK)
786 UBC 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
787 0 : get_namespace_name(namespaceoid));
788 :
789 : /* Get access method OID, throwing an error if it doesn't exist. */
790 CBC 74 : amoid = get_index_am_oid(stmt->amname, false);
791 :
792 : /* XXX Should we make any privilege check against the AM? */
793 :
794 : /*
795 : * Currently, we require superuser privileges to create an opfamily. See
796 : * comments in DefineOpClass.
797 : */
798 74 : if (!superuser())
799 UBC 0 : ereport(ERROR,
800 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
801 : errmsg("must be superuser to create an operator family")));
802 :
803 : /* Insert pg_opfamily catalog entry */
804 CBC 74 : return CreateOpFamily(stmt, opfname, namespaceoid, amoid);
805 : }
806 :
807 :
808 : /*
809 : * AlterOpFamily
810 : * Add or remove operators/procedures within an existing operator family.
811 : *
812 : * Note: this implements only ALTER OPERATOR FAMILY ... ADD/DROP. Some
813 : * other commands called ALTER OPERATOR FAMILY exist, but go through
814 : * different code paths.
815 : */
816 : Oid
817 223 : AlterOpFamily(AlterOpFamilyStmt *stmt)
818 : {
819 : Oid amoid, /* our AM's oid */
820 : opfamilyoid; /* oid of opfamily */
821 : int maxOpNumber, /* amstrategies value */
822 : optsProcNumber, /* amopclassopts value */
823 : maxProcNumber; /* amsupport value */
824 : HeapTuple tup;
825 : Form_pg_am amform;
826 : IndexAmRoutine *amroutine;
827 :
828 : /* Get necessary info about access method */
829 223 : tup = SearchSysCache1(AMNAME, CStringGetDatum(stmt->amname));
830 223 : if (!HeapTupleIsValid(tup))
831 3 : ereport(ERROR,
832 : (errcode(ERRCODE_UNDEFINED_OBJECT),
833 : errmsg("access method \"%s\" does not exist",
834 : stmt->amname)));
835 :
836 220 : amform = (Form_pg_am) GETSTRUCT(tup);
837 220 : amoid = amform->oid;
838 220 : amroutine = GetIndexAmRoutineByAmId(amoid, false);
839 220 : ReleaseSysCache(tup);
840 :
841 220 : maxOpNumber = amroutine->amstrategies;
842 : /* if amstrategies is zero, just enforce that op numbers fit in int16 */
843 220 : if (maxOpNumber <= 0)
844 73 : maxOpNumber = SHRT_MAX;
845 220 : maxProcNumber = amroutine->amsupport;
846 220 : optsProcNumber = amroutine->amoptsprocnum;
847 :
848 : /* XXX Should we make any privilege check against the AM? */
849 :
850 : /* Look up the opfamily */
851 220 : opfamilyoid = get_opfamily_oid(amoid, stmt->opfamilyname, false);
852 :
853 : /*
854 : * Currently, we require superuser privileges to alter an opfamily.
855 : *
856 : * XXX re-enable NOT_USED code sections below if you remove this test.
857 : */
858 217 : if (!superuser())
859 3 : ereport(ERROR,
860 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
861 : errmsg("must be superuser to alter an operator family")));
862 :
863 : /*
864 : * ADD and DROP cases need separate code from here on down.
865 : */
866 214 : if (stmt->isDrop)
867 30 : AlterOpFamilyDrop(stmt, amoid, opfamilyoid,
868 : maxOpNumber, maxProcNumber, stmt->items);
869 : else
870 184 : AlterOpFamilyAdd(stmt, amoid, opfamilyoid,
871 : maxOpNumber, maxProcNumber, optsProcNumber,
872 : stmt->items);
873 :
874 145 : return opfamilyoid;
875 : }
876 :
877 : /*
878 : * ADD part of ALTER OP FAMILY
879 : */
880 : static void
881 184 : AlterOpFamilyAdd(AlterOpFamilyStmt *stmt, Oid amoid, Oid opfamilyoid,
882 : int maxOpNumber, int maxProcNumber, int optsProcNumber,
883 : List *items)
884 : {
885 184 : IndexAmRoutine *amroutine = GetIndexAmRoutineByAmId(amoid, false);
886 : List *operators; /* OpFamilyMember list for operators */
887 : List *procedures; /* OpFamilyMember list for support procs */
888 : ListCell *l;
889 :
890 184 : operators = NIL;
891 184 : procedures = NIL;
892 :
893 : /*
894 : * Scan the "items" list to obtain additional info.
895 : */
896 581 : foreach(l, items)
897 : {
898 451 : CreateOpClassItem *item = lfirst_node(CreateOpClassItem, l);
899 : Oid operOid;
900 : Oid funcOid;
901 : Oid sortfamilyOid;
902 : OpFamilyMember *member;
903 :
904 451 : switch (item->itemtype)
905 : {
906 306 : case OPCLASS_ITEM_OPERATOR:
907 306 : if (item->number <= 0 || item->number > maxOpNumber)
908 6 : ereport(ERROR,
909 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
910 : errmsg("invalid operator number %d,"
911 : " must be between 1 and %d",
912 : item->number, maxOpNumber)));
913 300 : if (item->name->objargs != NIL)
914 297 : operOid = LookupOperWithArgs(item->name, false);
915 : else
916 : {
917 3 : ereport(ERROR,
918 : (errcode(ERRCODE_SYNTAX_ERROR),
919 : errmsg("operator argument types must be specified in ALTER OPERATOR FAMILY")));
920 : operOid = InvalidOid; /* keep compiler quiet */
921 : }
922 :
923 297 : if (item->order_family)
924 24 : sortfamilyOid = get_opfamily_oid(BTREE_AM_OID,
925 : item->order_family,
926 : false);
927 : else
928 273 : sortfamilyOid = InvalidOid;
929 :
930 : #ifdef NOT_USED
931 : /* XXX this is unnecessary given the superuser check above */
932 : /* Caller must own operator and its underlying function */
933 : if (!object_ownercheck(OperatorRelationId, operOid, GetUserId()))
934 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_OPERATOR,
935 : get_opname(operOid));
936 : funcOid = get_opcode(operOid);
937 : if (!object_ownercheck(ProcedureRelationId, funcOid, GetUserId()))
938 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
939 : get_func_name(funcOid));
940 : #endif
941 :
942 : /* Save the info */
943 297 : member = (OpFamilyMember *) palloc0(sizeof(OpFamilyMember));
944 297 : member->is_func = false;
945 297 : member->object = operOid;
946 297 : member->number = item->number;
947 297 : member->sortfamily = sortfamilyOid;
948 : /* We can set up dependency fields immediately */
949 : /* Historically, ALTER ADD has created soft dependencies */
950 297 : member->ref_is_hard = false;
951 297 : member->ref_is_family = true;
952 297 : member->refobjid = opfamilyoid;
953 297 : assignOperTypes(member, amoid, InvalidOid);
954 294 : addFamilyMember(&operators, member);
955 291 : break;
956 142 : case OPCLASS_ITEM_FUNCTION:
957 142 : if (item->number <= 0 || item->number > maxProcNumber)
958 6 : ereport(ERROR,
959 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
960 : errmsg("invalid function number %d,"
961 : " must be between 1 and %d",
962 : item->number, maxProcNumber)));
963 136 : funcOid = LookupFuncWithArgs(OBJECT_FUNCTION, item->name, false);
964 : #ifdef NOT_USED
965 : /* XXX this is unnecessary given the superuser check above */
966 : /* Caller must own function */
967 : if (!object_ownercheck(ProcedureRelationId, funcOid, GetUserId()))
968 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
969 : get_func_name(funcOid));
970 : #endif
971 :
972 : /* Save the info */
973 133 : member = (OpFamilyMember *) palloc0(sizeof(OpFamilyMember));
974 133 : member->is_func = true;
975 133 : member->object = funcOid;
976 133 : member->number = item->number;
977 : /* We can set up dependency fields immediately */
978 : /* Historically, ALTER ADD has created soft dependencies */
979 133 : member->ref_is_hard = false;
980 133 : member->ref_is_family = true;
981 133 : member->refobjid = opfamilyoid;
982 :
983 : /* allow overriding of the function's actual arg types */
984 133 : if (item->class_args)
985 68 : processTypesSpec(item->class_args,
986 : &member->lefttype, &member->righttype);
987 :
988 133 : assignProcTypes(member, amoid, InvalidOid, optsProcNumber);
989 109 : addFamilyMember(&procedures, member);
990 106 : break;
991 3 : case OPCLASS_ITEM_STORAGETYPE:
992 3 : ereport(ERROR,
993 : (errcode(ERRCODE_SYNTAX_ERROR),
994 : errmsg("STORAGE cannot be specified in ALTER OPERATOR FAMILY")));
995 : break;
996 UBC 0 : default:
997 0 : elog(ERROR, "unrecognized item type: %d", item->itemtype);
998 : break;
999 : }
1000 : }
1001 :
1002 : /*
1003 : * Let the index AM editorialize on the dependency choices. It could also
1004 : * do further validation on the operators and functions, if it likes.
1005 : */
1006 CBC 130 : if (amroutine->amadjustmembers)
1007 130 : amroutine->amadjustmembers(opfamilyoid,
1008 : InvalidOid, /* no specific opclass */
1009 : operators,
1010 : procedures);
1011 :
1012 : /*
1013 : * Add tuples to pg_amop and pg_amproc tying in the operators and
1014 : * functions. Dependencies on them are inserted, too.
1015 : */
1016 130 : storeOperators(stmt->opfamilyname, amoid, opfamilyoid,
1017 : operators, true);
1018 124 : storeProcedures(stmt->opfamilyname, amoid, opfamilyoid,
1019 : procedures, true);
1020 :
1021 : /* make information available to event triggers */
1022 124 : EventTriggerCollectAlterOpFam(stmt, opfamilyoid,
1023 : operators, procedures);
1024 124 : }
1025 :
1026 : /*
1027 : * DROP part of ALTER OP FAMILY
1028 : */
1029 : static void
1030 30 : AlterOpFamilyDrop(AlterOpFamilyStmt *stmt, Oid amoid, Oid opfamilyoid,
1031 : int maxOpNumber, int maxProcNumber, List *items)
1032 : {
1033 : List *operators; /* OpFamilyMember list for operators */
1034 : List *procedures; /* OpFamilyMember list for support procs */
1035 : ListCell *l;
1036 :
1037 30 : operators = NIL;
1038 30 : procedures = NIL;
1039 :
1040 : /*
1041 : * Scan the "items" list to obtain additional info.
1042 : */
1043 72 : foreach(l, items)
1044 : {
1045 45 : CreateOpClassItem *item = lfirst_node(CreateOpClassItem, l);
1046 : Oid lefttype,
1047 : righttype;
1048 : OpFamilyMember *member;
1049 :
1050 45 : switch (item->itemtype)
1051 : {
1052 28 : case OPCLASS_ITEM_OPERATOR:
1053 28 : if (item->number <= 0 || item->number > maxOpNumber)
1054 UBC 0 : ereport(ERROR,
1055 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1056 : errmsg("invalid operator number %d,"
1057 : " must be between 1 and %d",
1058 : item->number, maxOpNumber)));
1059 CBC 28 : processTypesSpec(item->class_args, &lefttype, &righttype);
1060 : /* Save the info */
1061 25 : member = (OpFamilyMember *) palloc0(sizeof(OpFamilyMember));
1062 25 : member->is_func = false;
1063 25 : member->number = item->number;
1064 25 : member->lefttype = lefttype;
1065 25 : member->righttype = righttype;
1066 25 : addFamilyMember(&operators, member);
1067 25 : break;
1068 17 : case OPCLASS_ITEM_FUNCTION:
1069 17 : if (item->number <= 0 || item->number > maxProcNumber)
1070 UBC 0 : ereport(ERROR,
1071 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1072 : errmsg("invalid function number %d,"
1073 : " must be between 1 and %d",
1074 : item->number, maxProcNumber)));
1075 CBC 17 : processTypesSpec(item->class_args, &lefttype, &righttype);
1076 : /* Save the info */
1077 17 : member = (OpFamilyMember *) palloc0(sizeof(OpFamilyMember));
1078 17 : member->is_func = true;
1079 17 : member->number = item->number;
1080 17 : member->lefttype = lefttype;
1081 17 : member->righttype = righttype;
1082 17 : addFamilyMember(&procedures, member);
1083 17 : break;
1084 UBC 0 : case OPCLASS_ITEM_STORAGETYPE:
1085 : /* grammar prevents this from appearing */
1086 : default:
1087 0 : elog(ERROR, "unrecognized item type: %d", item->itemtype);
1088 : break;
1089 : }
1090 : }
1091 :
1092 : /*
1093 : * Remove tuples from pg_amop and pg_amproc.
1094 : */
1095 CBC 27 : dropOperators(stmt->opfamilyname, amoid, opfamilyoid, operators);
1096 24 : dropProcedures(stmt->opfamilyname, amoid, opfamilyoid, procedures);
1097 :
1098 : /* make information available to event triggers */
1099 21 : EventTriggerCollectAlterOpFam(stmt, opfamilyoid,
1100 : operators, procedures);
1101 21 : }
1102 :
1103 :
1104 : /*
1105 : * Deal with explicit arg types used in ALTER ADD/DROP
1106 : */
1107 : static void
1108 113 : processTypesSpec(List *args, Oid *lefttype, Oid *righttype)
1109 : {
1110 : TypeName *typeName;
1111 :
1112 113 : Assert(args != NIL);
1113 :
1114 113 : typeName = (TypeName *) linitial(args);
1115 113 : *lefttype = typenameTypeId(NULL, typeName);
1116 :
1117 113 : if (list_length(args) > 1)
1118 : {
1119 85 : typeName = (TypeName *) lsecond(args);
1120 85 : *righttype = typenameTypeId(NULL, typeName);
1121 : }
1122 : else
1123 28 : *righttype = *lefttype;
1124 :
1125 113 : if (list_length(args) > 2)
1126 3 : ereport(ERROR,
1127 : (errcode(ERRCODE_SYNTAX_ERROR),
1128 : errmsg("one or two argument types must be specified")));
1129 110 : }
1130 :
1131 :
1132 : /*
1133 : * Determine the lefttype/righttype to assign to an operator,
1134 : * and do any validity checking we can manage.
1135 : */
1136 : static void
1137 1004 : assignOperTypes(OpFamilyMember *member, Oid amoid, Oid typeoid)
1138 : {
1139 : Operator optup;
1140 : Form_pg_operator opform;
1141 :
1142 : /* Fetch the operator definition */
1143 1004 : optup = SearchSysCache1(OPEROID, ObjectIdGetDatum(member->object));
1144 1004 : if (!HeapTupleIsValid(optup))
1145 UBC 0 : elog(ERROR, "cache lookup failed for operator %u", member->object);
1146 CBC 1004 : opform = (Form_pg_operator) GETSTRUCT(optup);
1147 :
1148 : /*
1149 : * Opfamily operators must be binary.
1150 : */
1151 1004 : if (opform->oprkind != 'b')
1152 UBC 0 : ereport(ERROR,
1153 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1154 : errmsg("index operators must be binary")));
1155 :
1156 CBC 1004 : if (OidIsValid(member->sortfamily))
1157 : {
1158 : /*
1159 : * Ordering op, check index supports that. (We could perhaps also
1160 : * check that the operator returns a type supported by the sortfamily,
1161 : * but that seems more trouble than it's worth here. If it does not,
1162 : * the operator will never be matchable to any ORDER BY clause, but no
1163 : * worse consequences can ensue. Also, trying to check that would
1164 : * create an ordering hazard during dump/reload: it's possible that
1165 : * the family has been created but not yet populated with the required
1166 : * operators.)
1167 : */
1168 36 : IndexAmRoutine *amroutine = GetIndexAmRoutineByAmId(amoid, false);
1169 :
1170 36 : if (!amroutine->amcanorderbyop)
1171 3 : ereport(ERROR,
1172 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1173 : errmsg("access method \"%s\" does not support ordering operators",
1174 : get_am_name(amoid))));
1175 : }
1176 : else
1177 : {
1178 : /*
1179 : * Search operators must return boolean.
1180 : */
1181 968 : if (opform->oprresult != BOOLOID)
1182 UBC 0 : ereport(ERROR,
1183 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1184 : errmsg("index search operators must return boolean")));
1185 : }
1186 :
1187 : /*
1188 : * If lefttype/righttype isn't specified, use the operator's input types
1189 : */
1190 CBC 1001 : if (!OidIsValid(member->lefttype))
1191 1001 : member->lefttype = opform->oprleft;
1192 1001 : if (!OidIsValid(member->righttype))
1193 1001 : member->righttype = opform->oprright;
1194 :
1195 1001 : ReleaseSysCache(optup);
1196 1001 : }
1197 :
1198 : /*
1199 : * Determine the lefttype/righttype to assign to a support procedure,
1200 : * and do any validity checking we can manage.
1201 : */
1202 : static void
1203 727 : assignProcTypes(OpFamilyMember *member, Oid amoid, Oid typeoid,
1204 : int opclassOptsProcNum)
1205 : {
1206 : HeapTuple proctup;
1207 : Form_pg_proc procform;
1208 :
1209 : /* Fetch the procedure definition */
1210 727 : proctup = SearchSysCache1(PROCOID, ObjectIdGetDatum(member->object));
1211 727 : if (!HeapTupleIsValid(proctup))
1212 UBC 0 : elog(ERROR, "cache lookup failed for function %u", member->object);
1213 CBC 727 : procform = (Form_pg_proc) GETSTRUCT(proctup);
1214 :
1215 : /* Check the signature of the opclass options parsing function */
1216 727 : if (member->number == opclassOptsProcNum)
1217 : {
1218 23 : if (OidIsValid(typeoid))
1219 : {
1220 UBC 0 : if ((OidIsValid(member->lefttype) && member->lefttype != typeoid) ||
1221 0 : (OidIsValid(member->righttype) && member->righttype != typeoid))
1222 0 : ereport(ERROR,
1223 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1224 : errmsg("associated data types for operator class options parsing functions must match opclass input type")));
1225 : }
1226 : else
1227 : {
1228 CBC 23 : if (member->lefttype != member->righttype)
1229 3 : ereport(ERROR,
1230 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1231 : errmsg("left and right associated data types for operator class options parsing functions must match")));
1232 : }
1233 :
1234 20 : if (procform->prorettype != VOIDOID ||
1235 17 : procform->pronargs != 1 ||
1236 17 : procform->proargtypes.values[0] != INTERNALOID)
1237 3 : ereport(ERROR,
1238 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1239 : errmsg("invalid operator class options parsing function"),
1240 : errhint("Valid signature of operator class options parsing function is %s.",
1241 : "(internal) RETURNS void")));
1242 : }
1243 :
1244 : /*
1245 : * btree comparison procs must be 2-arg procs returning int4. btree
1246 : * sortsupport procs must take internal and return void. btree in_range
1247 : * procs must be 5-arg procs returning bool. btree equalimage procs must
1248 : * take 1 arg and return bool. hash support proc 1 must be a 1-arg proc
1249 : * returning int4, while proc 2 must be a 2-arg proc returning int8.
1250 : * Otherwise we don't know.
1251 : */
1252 704 : else if (amoid == BTREE_AM_OID)
1253 : {
1254 90 : if (member->number == BTORDER_PROC)
1255 : {
1256 83 : if (procform->pronargs != 2)
1257 3 : ereport(ERROR,
1258 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1259 : errmsg("btree comparison functions must have two arguments")));
1260 80 : if (procform->prorettype != INT4OID)
1261 3 : ereport(ERROR,
1262 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1263 : errmsg("btree comparison functions must return integer")));
1264 :
1265 : /*
1266 : * If lefttype/righttype isn't specified, use the proc's input
1267 : * types
1268 : */
1269 77 : if (!OidIsValid(member->lefttype))
1270 76 : member->lefttype = procform->proargtypes.values[0];
1271 77 : if (!OidIsValid(member->righttype))
1272 76 : member->righttype = procform->proargtypes.values[1];
1273 : }
1274 7 : else if (member->number == BTSORTSUPPORT_PROC)
1275 : {
1276 2 : if (procform->pronargs != 1 ||
1277 2 : procform->proargtypes.values[0] != INTERNALOID)
1278 UBC 0 : ereport(ERROR,
1279 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1280 : errmsg("btree sort support functions must accept type \"internal\"")));
1281 CBC 2 : if (procform->prorettype != VOIDOID)
1282 UBC 0 : ereport(ERROR,
1283 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1284 : errmsg("btree sort support functions must return void")));
1285 :
1286 : /*
1287 : * Can't infer lefttype/righttype from proc, so use default rule
1288 : */
1289 : }
1290 CBC 5 : else if (member->number == BTINRANGE_PROC)
1291 : {
1292 UBC 0 : if (procform->pronargs != 5)
1293 0 : ereport(ERROR,
1294 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1295 : errmsg("btree in_range functions must have five arguments")));
1296 0 : if (procform->prorettype != BOOLOID)
1297 0 : ereport(ERROR,
1298 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1299 : errmsg("btree in_range functions must return boolean")));
1300 :
1301 : /*
1302 : * If lefttype/righttype isn't specified, use the proc's input
1303 : * types (we look at the test-value and offset arguments)
1304 : */
1305 0 : if (!OidIsValid(member->lefttype))
1306 0 : member->lefttype = procform->proargtypes.values[0];
1307 0 : if (!OidIsValid(member->righttype))
1308 0 : member->righttype = procform->proargtypes.values[2];
1309 : }
1310 CBC 5 : else if (member->number == BTEQUALIMAGE_PROC)
1311 : {
1312 5 : if (procform->pronargs != 1)
1313 UBC 0 : ereport(ERROR,
1314 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1315 : errmsg("btree equal image functions must have one argument")));
1316 CBC 5 : if (procform->prorettype != BOOLOID)
1317 UBC 0 : ereport(ERROR,
1318 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1319 : errmsg("btree equal image functions must return boolean")));
1320 :
1321 : /*
1322 : * pg_amproc functions are indexed by (lefttype, righttype), but
1323 : * an equalimage function can only be called at CREATE INDEX time.
1324 : * The same opclass opcintype OID is always used for leftype and
1325 : * righttype. Providing a cross-type routine isn't sensible.
1326 : * Reject cross-type ALTER OPERATOR FAMILY ... ADD FUNCTION 4
1327 : * statements here.
1328 : */
1329 CBC 5 : if (member->lefttype != member->righttype)
1330 3 : ereport(ERROR,
1331 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1332 : errmsg("btree equal image functions must not be cross-type")));
1333 : }
1334 : }
1335 614 : else if (amoid == HASH_AM_OID)
1336 : {
1337 50 : if (member->number == HASHSTANDARD_PROC)
1338 : {
1339 26 : if (procform->pronargs != 1)
1340 3 : ereport(ERROR,
1341 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1342 : errmsg("hash function 1 must have one argument")));
1343 23 : if (procform->prorettype != INT4OID)
1344 3 : ereport(ERROR,
1345 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1346 : errmsg("hash function 1 must return integer")));
1347 : }
1348 24 : else if (member->number == HASHEXTENDED_PROC)
1349 : {
1350 24 : if (procform->pronargs != 2)
1351 UBC 0 : ereport(ERROR,
1352 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1353 : errmsg("hash function 2 must have two arguments")));
1354 CBC 24 : if (procform->prorettype != INT8OID)
1355 UBC 0 : ereport(ERROR,
1356 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1357 : errmsg("hash function 2 must return bigint")));
1358 : }
1359 :
1360 : /*
1361 : * If lefttype/righttype isn't specified, use the proc's input type
1362 : */
1363 CBC 44 : if (!OidIsValid(member->lefttype))
1364 41 : member->lefttype = procform->proargtypes.values[0];
1365 44 : if (!OidIsValid(member->righttype))
1366 41 : member->righttype = procform->proargtypes.values[0];
1367 : }
1368 :
1369 : /*
1370 : * The default in CREATE OPERATOR CLASS is to use the class' opcintype as
1371 : * lefttype and righttype. In CREATE or ALTER OPERATOR FAMILY, opcintype
1372 : * isn't available, so make the user specify the types.
1373 : */
1374 706 : if (!OidIsValid(member->lefttype))
1375 530 : member->lefttype = typeoid;
1376 706 : if (!OidIsValid(member->righttype))
1377 530 : member->righttype = typeoid;
1378 :
1379 706 : if (!OidIsValid(member->lefttype) || !OidIsValid(member->righttype))
1380 3 : ereport(ERROR,
1381 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1382 : errmsg("associated data types must be specified for index support function")));
1383 :
1384 703 : ReleaseSysCache(proctup);
1385 703 : }
1386 :
1387 : /*
1388 : * Add a new family member to the appropriate list, after checking for
1389 : * duplicated strategy or proc number.
1390 : */
1391 : static void
1392 1746 : addFamilyMember(List **list, OpFamilyMember *member)
1393 : {
1394 : ListCell *l;
1395 :
1396 5942 : foreach(l, *list)
1397 : {
1398 4202 : OpFamilyMember *old = (OpFamilyMember *) lfirst(l);
1399 :
1400 4202 : if (old->number == member->number &&
1401 195 : old->lefttype == member->lefttype &&
1402 195 : old->righttype == member->righttype)
1403 : {
1404 6 : if (member->is_func)
1405 3 : ereport(ERROR,
1406 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1407 : errmsg("function number %d for (%s,%s) appears more than once",
1408 : member->number,
1409 : format_type_be(member->lefttype),
1410 : format_type_be(member->righttype))));
1411 : else
1412 3 : ereport(ERROR,
1413 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1414 : errmsg("operator number %d for (%s,%s) appears more than once",
1415 : member->number,
1416 : format_type_be(member->lefttype),
1417 : format_type_be(member->righttype))));
1418 : }
1419 : }
1420 1740 : *list = lappend(*list, member);
1421 1740 : }
1422 :
1423 : /*
1424 : * Dump the operators to pg_amop
1425 : *
1426 : * We also make dependency entries in pg_depend for the pg_amop entries.
1427 : */
1428 : static void
1429 313 : storeOperators(List *opfamilyname, Oid amoid, Oid opfamilyoid,
1430 : List *operators, bool isAdd)
1431 : {
1432 : Relation rel;
1433 : Datum values[Natts_pg_amop];
1434 : bool nulls[Natts_pg_amop];
1435 : HeapTuple tup;
1436 : Oid entryoid;
1437 : ObjectAddress myself,
1438 : referenced;
1439 : ListCell *l;
1440 :
1441 313 : rel = table_open(AccessMethodOperatorRelationId, RowExclusiveLock);
1442 :
1443 1275 : foreach(l, operators)
1444 : {
1445 968 : OpFamilyMember *op = (OpFamilyMember *) lfirst(l);
1446 : char oppurpose;
1447 :
1448 : /*
1449 : * If adding to an existing family, check for conflict with an
1450 : * existing pg_amop entry (just to give a nicer error message)
1451 : */
1452 1229 : if (isAdd &&
1453 261 : SearchSysCacheExists4(AMOPSTRATEGY,
1454 : ObjectIdGetDatum(opfamilyoid),
1455 : ObjectIdGetDatum(op->lefttype),
1456 : ObjectIdGetDatum(op->righttype),
1457 : Int16GetDatum(op->number)))
1458 6 : ereport(ERROR,
1459 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1460 : errmsg("operator %d(%s,%s) already exists in operator family \"%s\"",
1461 : op->number,
1462 : format_type_be(op->lefttype),
1463 : format_type_be(op->righttype),
1464 : NameListToString(opfamilyname))));
1465 :
1466 962 : oppurpose = OidIsValid(op->sortfamily) ? AMOP_ORDER : AMOP_SEARCH;
1467 :
1468 : /* Create the pg_amop entry */
1469 962 : memset(values, 0, sizeof(values));
1470 962 : memset(nulls, false, sizeof(nulls));
1471 :
1472 962 : entryoid = GetNewOidWithIndex(rel, AccessMethodOperatorOidIndexId,
1473 : Anum_pg_amop_oid);
1474 962 : values[Anum_pg_amop_oid - 1] = ObjectIdGetDatum(entryoid);
1475 962 : values[Anum_pg_amop_amopfamily - 1] = ObjectIdGetDatum(opfamilyoid);
1476 962 : values[Anum_pg_amop_amoplefttype - 1] = ObjectIdGetDatum(op->lefttype);
1477 962 : values[Anum_pg_amop_amoprighttype - 1] = ObjectIdGetDatum(op->righttype);
1478 962 : values[Anum_pg_amop_amopstrategy - 1] = Int16GetDatum(op->number);
1479 962 : values[Anum_pg_amop_amoppurpose - 1] = CharGetDatum(oppurpose);
1480 962 : values[Anum_pg_amop_amopopr - 1] = ObjectIdGetDatum(op->object);
1481 962 : values[Anum_pg_amop_amopmethod - 1] = ObjectIdGetDatum(amoid);
1482 962 : values[Anum_pg_amop_amopsortfamily - 1] = ObjectIdGetDatum(op->sortfamily);
1483 :
1484 962 : tup = heap_form_tuple(rel->rd_att, values, nulls);
1485 :
1486 962 : CatalogTupleInsert(rel, tup);
1487 :
1488 962 : heap_freetuple(tup);
1489 :
1490 : /* Make its dependencies */
1491 962 : myself.classId = AccessMethodOperatorRelationId;
1492 962 : myself.objectId = entryoid;
1493 962 : myself.objectSubId = 0;
1494 :
1495 962 : referenced.classId = OperatorRelationId;
1496 962 : referenced.objectId = op->object;
1497 962 : referenced.objectSubId = 0;
1498 :
1499 : /* see comments in amapi.h about dependency strength */
1500 962 : recordDependencyOn(&myself, &referenced,
1501 962 : op->ref_is_hard ? DEPENDENCY_NORMAL : DEPENDENCY_AUTO);
1502 :
1503 962 : referenced.classId = op->ref_is_family ? OperatorFamilyRelationId :
1504 : OperatorClassRelationId;
1505 962 : referenced.objectId = op->refobjid;
1506 962 : referenced.objectSubId = 0;
1507 :
1508 962 : recordDependencyOn(&myself, &referenced,
1509 962 : op->ref_is_hard ? DEPENDENCY_INTERNAL : DEPENDENCY_AUTO);
1510 :
1511 : /* A search operator also needs a dep on the referenced opfamily */
1512 962 : if (OidIsValid(op->sortfamily))
1513 : {
1514 33 : referenced.classId = OperatorFamilyRelationId;
1515 33 : referenced.objectId = op->sortfamily;
1516 33 : referenced.objectSubId = 0;
1517 :
1518 33 : recordDependencyOn(&myself, &referenced,
1519 33 : op->ref_is_hard ? DEPENDENCY_NORMAL : DEPENDENCY_AUTO);
1520 : }
1521 :
1522 : /* Post create hook of this access method operator */
1523 962 : InvokeObjectPostCreateHook(AccessMethodOperatorRelationId,
1524 : entryoid, 0);
1525 : }
1526 :
1527 307 : table_close(rel, RowExclusiveLock);
1528 307 : }
1529 :
1530 : /*
1531 : * Dump the procedures (support routines) to pg_amproc
1532 : *
1533 : * We also make dependency entries in pg_depend for the pg_amproc entries.
1534 : */
1535 : static void
1536 307 : storeProcedures(List *opfamilyname, Oid amoid, Oid opfamilyoid,
1537 : List *procedures, bool isAdd)
1538 : {
1539 : Relation rel;
1540 : Datum values[Natts_pg_amproc];
1541 : bool nulls[Natts_pg_amproc];
1542 : HeapTuple tup;
1543 : Oid entryoid;
1544 : ObjectAddress myself,
1545 : referenced;
1546 : ListCell *l;
1547 :
1548 307 : rel = table_open(AccessMethodProcedureRelationId, RowExclusiveLock);
1549 :
1550 1001 : foreach(l, procedures)
1551 : {
1552 694 : OpFamilyMember *proc = (OpFamilyMember *) lfirst(l);
1553 :
1554 : /*
1555 : * If adding to an existing family, check for conflict with an
1556 : * existing pg_amproc entry (just to give a nicer error message)
1557 : */
1558 794 : if (isAdd &&
1559 100 : SearchSysCacheExists4(AMPROCNUM,
1560 : ObjectIdGetDatum(opfamilyoid),
1561 : ObjectIdGetDatum(proc->lefttype),
1562 : ObjectIdGetDatum(proc->righttype),
1563 : Int16GetDatum(proc->number)))
1564 UBC 0 : ereport(ERROR,
1565 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1566 : errmsg("function %d(%s,%s) already exists in operator family \"%s\"",
1567 : proc->number,
1568 : format_type_be(proc->lefttype),
1569 : format_type_be(proc->righttype),
1570 : NameListToString(opfamilyname))));
1571 :
1572 : /* Create the pg_amproc entry */
1573 CBC 694 : memset(values, 0, sizeof(values));
1574 694 : memset(nulls, false, sizeof(nulls));
1575 :
1576 694 : entryoid = GetNewOidWithIndex(rel, AccessMethodProcedureOidIndexId,
1577 : Anum_pg_amproc_oid);
1578 694 : values[Anum_pg_amproc_oid - 1] = ObjectIdGetDatum(entryoid);
1579 694 : values[Anum_pg_amproc_amprocfamily - 1] = ObjectIdGetDatum(opfamilyoid);
1580 694 : values[Anum_pg_amproc_amproclefttype - 1] = ObjectIdGetDatum(proc->lefttype);
1581 694 : values[Anum_pg_amproc_amprocrighttype - 1] = ObjectIdGetDatum(proc->righttype);
1582 694 : values[Anum_pg_amproc_amprocnum - 1] = Int16GetDatum(proc->number);
1583 694 : values[Anum_pg_amproc_amproc - 1] = ObjectIdGetDatum(proc->object);
1584 :
1585 694 : tup = heap_form_tuple(rel->rd_att, values, nulls);
1586 :
1587 694 : CatalogTupleInsert(rel, tup);
1588 :
1589 694 : heap_freetuple(tup);
1590 :
1591 : /* Make its dependencies */
1592 694 : myself.classId = AccessMethodProcedureRelationId;
1593 694 : myself.objectId = entryoid;
1594 694 : myself.objectSubId = 0;
1595 :
1596 694 : referenced.classId = ProcedureRelationId;
1597 694 : referenced.objectId = proc->object;
1598 694 : referenced.objectSubId = 0;
1599 :
1600 : /* see comments in amapi.h about dependency strength */
1601 694 : recordDependencyOn(&myself, &referenced,
1602 694 : proc->ref_is_hard ? DEPENDENCY_NORMAL : DEPENDENCY_AUTO);
1603 :
1604 694 : referenced.classId = proc->ref_is_family ? OperatorFamilyRelationId :
1605 : OperatorClassRelationId;
1606 694 : referenced.objectId = proc->refobjid;
1607 694 : referenced.objectSubId = 0;
1608 :
1609 694 : recordDependencyOn(&myself, &referenced,
1610 694 : proc->ref_is_hard ? DEPENDENCY_INTERNAL : DEPENDENCY_AUTO);
1611 :
1612 : /* Post create hook of access method procedure */
1613 694 : InvokeObjectPostCreateHook(AccessMethodProcedureRelationId,
1614 : entryoid, 0);
1615 : }
1616 :
1617 307 : table_close(rel, RowExclusiveLock);
1618 307 : }
1619 :
1620 :
1621 : /*
1622 : * Remove operator entries from an opfamily.
1623 : *
1624 : * Note: this is only allowed for "loose" members of an opfamily, hence
1625 : * behavior is always RESTRICT.
1626 : */
1627 : static void
1628 27 : dropOperators(List *opfamilyname, Oid amoid, Oid opfamilyoid,
1629 : List *operators)
1630 : {
1631 : ListCell *l;
1632 :
1633 49 : foreach(l, operators)
1634 : {
1635 25 : OpFamilyMember *op = (OpFamilyMember *) lfirst(l);
1636 : Oid amopid;
1637 : ObjectAddress object;
1638 :
1639 25 : amopid = GetSysCacheOid4(AMOPSTRATEGY, Anum_pg_amop_oid,
1640 : ObjectIdGetDatum(opfamilyoid),
1641 : ObjectIdGetDatum(op->lefttype),
1642 : ObjectIdGetDatum(op->righttype),
1643 : Int16GetDatum(op->number));
1644 25 : if (!OidIsValid(amopid))
1645 3 : ereport(ERROR,
1646 : (errcode(ERRCODE_UNDEFINED_OBJECT),
1647 : errmsg("operator %d(%s,%s) does not exist in operator family \"%s\"",
1648 : op->number,
1649 : format_type_be(op->lefttype),
1650 : format_type_be(op->righttype),
1651 : NameListToString(opfamilyname))));
1652 :
1653 22 : object.classId = AccessMethodOperatorRelationId;
1654 22 : object.objectId = amopid;
1655 22 : object.objectSubId = 0;
1656 :
1657 22 : performDeletion(&object, DROP_RESTRICT, 0);
1658 : }
1659 24 : }
1660 :
1661 : /*
1662 : * Remove procedure entries from an opfamily.
1663 : *
1664 : * Note: this is only allowed for "loose" members of an opfamily, hence
1665 : * behavior is always RESTRICT.
1666 : */
1667 : static void
1668 24 : dropProcedures(List *opfamilyname, Oid amoid, Oid opfamilyoid,
1669 : List *procedures)
1670 : {
1671 : ListCell *l;
1672 :
1673 38 : foreach(l, procedures)
1674 : {
1675 17 : OpFamilyMember *op = (OpFamilyMember *) lfirst(l);
1676 : Oid amprocid;
1677 : ObjectAddress object;
1678 :
1679 17 : amprocid = GetSysCacheOid4(AMPROCNUM, Anum_pg_amproc_oid,
1680 : ObjectIdGetDatum(opfamilyoid),
1681 : ObjectIdGetDatum(op->lefttype),
1682 : ObjectIdGetDatum(op->righttype),
1683 : Int16GetDatum(op->number));
1684 17 : if (!OidIsValid(amprocid))
1685 3 : ereport(ERROR,
1686 : (errcode(ERRCODE_UNDEFINED_OBJECT),
1687 : errmsg("function %d(%s,%s) does not exist in operator family \"%s\"",
1688 : op->number,
1689 : format_type_be(op->lefttype),
1690 : format_type_be(op->righttype),
1691 : NameListToString(opfamilyname))));
1692 :
1693 14 : object.classId = AccessMethodProcedureRelationId;
1694 14 : object.objectId = amprocid;
1695 14 : object.objectSubId = 0;
1696 :
1697 14 : performDeletion(&object, DROP_RESTRICT, 0);
1698 : }
1699 21 : }
1700 :
1701 : /*
1702 : * Subroutine for ALTER OPERATOR CLASS SET SCHEMA/RENAME
1703 : *
1704 : * Is there an operator class with the given name and signature already
1705 : * in the given namespace? If so, raise an appropriate error message.
1706 : */
1707 : void
1708 18 : IsThereOpClassInNamespace(const char *opcname, Oid opcmethod,
1709 : Oid opcnamespace)
1710 : {
1711 : /* make sure the new name doesn't exist */
1712 18 : if (SearchSysCacheExists3(CLAAMNAMENSP,
1713 : ObjectIdGetDatum(opcmethod),
1714 : CStringGetDatum(opcname),
1715 : ObjectIdGetDatum(opcnamespace)))
1716 6 : ereport(ERROR,
1717 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1718 : errmsg("operator class \"%s\" for access method \"%s\" already exists in schema \"%s\"",
1719 : opcname,
1720 : get_am_name(opcmethod),
1721 : get_namespace_name(opcnamespace))));
1722 12 : }
1723 :
1724 : /*
1725 : * Subroutine for ALTER OPERATOR FAMILY SET SCHEMA/RENAME
1726 : *
1727 : * Is there an operator family with the given name and signature already
1728 : * in the given namespace? If so, raise an appropriate error message.
1729 : */
1730 : void
1731 18 : IsThereOpFamilyInNamespace(const char *opfname, Oid opfmethod,
1732 : Oid opfnamespace)
1733 : {
1734 : /* make sure the new name doesn't exist */
1735 18 : if (SearchSysCacheExists3(OPFAMILYAMNAMENSP,
1736 : ObjectIdGetDatum(opfmethod),
1737 : CStringGetDatum(opfname),
1738 : ObjectIdGetDatum(opfnamespace)))
1739 6 : ereport(ERROR,
1740 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1741 : errmsg("operator family \"%s\" for access method \"%s\" already exists in schema \"%s\"",
1742 : opfname,
1743 : get_am_name(opfmethod),
1744 : get_namespace_name(opfnamespace))));
1745 12 : }
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