Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * opclasscmds.c
4 : *
5 : * Routines for opclass (and opfamily) manipulation commands
6 : *
7 : * Portions Copyright (c) 1996-2026, 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/table.h"
25 : #include "catalog/catalog.h"
26 : #include "catalog/dependency.h"
27 : #include "catalog/indexing.h"
28 : #include "catalog/objectaccess.h"
29 : #include "catalog/pg_am.h"
30 : #include "catalog/pg_amop.h"
31 : #include "catalog/pg_amproc.h"
32 : #include "catalog/pg_namespace.h"
33 : #include "catalog/pg_opclass.h"
34 : #include "catalog/pg_operator.h"
35 : #include "catalog/pg_opfamily.h"
36 : #include "catalog/pg_proc.h"
37 : #include "catalog/pg_type.h"
38 : #include "commands/defrem.h"
39 : #include "commands/event_trigger.h"
40 : #include "miscadmin.h"
41 : #include "parser/parse_func.h"
42 : #include "parser/parse_oper.h"
43 : #include "parser/parse_type.h"
44 : #include "utils/acl.h"
45 : #include "utils/builtins.h"
46 : #include "utils/fmgroids.h"
47 : #include "utils/lsyscache.h"
48 : #include "utils/rel.h"
49 : #include "utils/syscache.h"
50 :
51 : static void AlterOpFamilyAdd(AlterOpFamilyStmt *stmt,
52 : Oid amoid, Oid opfamilyoid,
53 : int maxOpNumber, int maxProcNumber,
54 : int optsProcNumber, List *items);
55 : static void AlterOpFamilyDrop(AlterOpFamilyStmt *stmt,
56 : Oid amoid, Oid opfamilyoid,
57 : int maxOpNumber, int maxProcNumber,
58 : List *items);
59 : static void processTypesSpec(List *args, Oid *lefttype, Oid *righttype);
60 : static void assignOperTypes(OpFamilyMember *member, Oid amoid, Oid typeoid);
61 : static void assignProcTypes(OpFamilyMember *member, Oid amoid, Oid typeoid,
62 : int opclassOptsProcNum);
63 : static void addFamilyMember(List **list, OpFamilyMember *member);
64 : static void storeOperators(List *opfamilyname, Oid amoid, Oid opfamilyoid,
65 : List *operators, bool isAdd);
66 : static void storeProcedures(List *opfamilyname, Oid amoid, Oid opfamilyoid,
67 : List *procedures, bool isAdd);
68 : static bool typeDepNeeded(Oid typid, OpFamilyMember *member);
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 1348 : 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 1348 : DeconstructQualifiedName(opfamilyname, &schemaname, &opfname);
89 :
90 1348 : if (schemaname)
91 : {
92 : /* Look in specific schema only */
93 : Oid namespaceId;
94 :
95 146 : namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
96 140 : if (!OidIsValid(namespaceId))
97 6 : htup = NULL;
98 : else
99 134 : 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 1202 : Oid opfID = OpfamilynameGetOpfid(amID, opfname);
108 :
109 1202 : if (!OidIsValid(opfID))
110 12 : htup = NULL;
111 : else
112 1190 : htup = SearchSysCache1(OPFAMILYOID, ObjectIdGetDatum(opfID));
113 : }
114 :
115 1342 : if (!HeapTupleIsValid(htup) && !missing_ok)
116 : {
117 : HeapTuple amtup;
118 :
119 6 : amtup = SearchSysCache1(AMOID, ObjectIdGetDatum(amID));
120 6 : if (!HeapTupleIsValid(amtup))
121 0 : elog(ERROR, "cache lookup failed for access method %u", amID);
122 6 : 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 1336 : 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 1348 : get_opfamily_oid(Oid amID, List *opfamilyname, bool missing_ok)
140 : {
141 : HeapTuple htup;
142 : Form_pg_opfamily opfamform;
143 : Oid opfID;
144 :
145 1348 : htup = OpFamilyCacheLookup(amID, opfamilyname, missing_ok);
146 1336 : if (!HeapTupleIsValid(htup))
147 12 : return InvalidOid;
148 1324 : opfamform = (Form_pg_opfamily) GETSTRUCT(htup);
149 1324 : opfID = opfamform->oid;
150 1324 : ReleaseSysCache(htup);
151 :
152 1324 : 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
162 212 : OpClassCacheLookup(Oid amID, List *opclassname, bool missing_ok)
163 : {
164 : char *schemaname;
165 : char *opcname;
166 : HeapTuple htup;
167 :
168 : /* deconstruct the name list */
169 212 : DeconstructQualifiedName(opclassname, &schemaname, &opcname);
170 :
171 212 : if (schemaname)
172 : {
173 : /* Look in specific schema only */
174 : Oid namespaceId;
175 :
176 26 : namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
177 26 : if (!OidIsValid(namespaceId))
178 6 : htup = NULL;
179 : else
180 20 : 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 */
188 186 : Oid opcID = OpclassnameGetOpcid(amID, opcname);
189 :
190 186 : if (!OidIsValid(opcID))
191 12 : htup = NULL;
192 : else
193 174 : htup = SearchSysCache1(CLAOID, ObjectIdGetDatum(opcID));
194 : }
195 :
196 212 : if (!HeapTupleIsValid(htup) && !missing_ok)
197 : {
198 : HeapTuple amtup;
199 :
200 6 : amtup = SearchSysCache1(AMOID, ObjectIdGetDatum(amID));
201 6 : if (!HeapTupleIsValid(amtup))
202 0 : elog(ERROR, "cache lookup failed for access method %u", amID);
203 6 : 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 :
210 206 : 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
220 212 : get_opclass_oid(Oid amID, List *opclassname, bool missing_ok)
221 : {
222 : HeapTuple htup;
223 : Form_pg_opclass opcform;
224 : Oid opcID;
225 :
226 212 : htup = OpClassCacheLookup(amID, opclassname, missing_ok);
227 206 : if (!HeapTupleIsValid(htup))
228 12 : return InvalidOid;
229 194 : opcform = (Form_pg_opclass) GETSTRUCT(htup);
230 194 : opcID = opcform->oid;
231 194 : ReleaseSysCache(htup);
232 :
233 194 : 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
243 648 : 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 :
255 648 : 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 : */
261 648 : if (SearchSysCacheExists3(OPFAMILYAMNAMENSP,
262 : ObjectIdGetDatum(amoid),
263 : CStringGetDatum(opfname),
264 : ObjectIdGetDatum(namespaceoid)))
265 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 : */
273 648 : memset(values, 0, sizeof(values));
274 648 : memset(nulls, false, sizeof(nulls));
275 :
276 648 : opfamilyoid = GetNewOidWithIndex(rel, OpfamilyOidIndexId,
277 : Anum_pg_opfamily_oid);
278 648 : values[Anum_pg_opfamily_oid - 1] = ObjectIdGetDatum(opfamilyoid);
279 648 : values[Anum_pg_opfamily_opfmethod - 1] = ObjectIdGetDatum(amoid);
280 648 : namestrcpy(&opfName, opfname);
281 648 : values[Anum_pg_opfamily_opfname - 1] = NameGetDatum(&opfName);
282 648 : values[Anum_pg_opfamily_opfnamespace - 1] = ObjectIdGetDatum(namespaceoid);
283 648 : values[Anum_pg_opfamily_opfowner - 1] = ObjectIdGetDatum(GetUserId());
284 :
285 648 : tup = heap_form_tuple(rel->rd_att, values, nulls);
286 :
287 648 : CatalogTupleInsert(rel, tup);
288 :
289 648 : heap_freetuple(tup);
290 :
291 : /*
292 : * Create dependencies for the opfamily proper.
293 : */
294 648 : myself.classId = OperatorFamilyRelationId;
295 648 : myself.objectId = opfamilyoid;
296 648 : myself.objectSubId = 0;
297 :
298 : /* dependency on access method */
299 648 : referenced.classId = AccessMethodRelationId;
300 648 : referenced.objectId = amoid;
301 648 : referenced.objectSubId = 0;
302 648 : recordDependencyOn(&myself, &referenced, DEPENDENCY_AUTO);
303 :
304 : /* dependency on namespace */
305 648 : referenced.classId = NamespaceRelationId;
306 648 : referenced.objectId = namespaceoid;
307 648 : referenced.objectSubId = 0;
308 648 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
309 :
310 : /* dependency on owner */
311 648 : recordDependencyOnOwner(OperatorFamilyRelationId, opfamilyoid, GetUserId());
312 :
313 : /* dependency on extension */
314 648 : recordDependencyOnCurrentExtension(&myself, false);
315 :
316 : /* Report the new operator family to possibly interested event triggers */
317 648 : EventTriggerCollectSimpleCommand(myself, InvalidObjectAddress,
318 : (Node *) stmt);
319 :
320 : /* Post creation hook for new operator family */
321 648 : InvokeObjectPostCreateHook(OperatorFamilyRelationId, opfamilyoid, 0);
322 :
323 648 : table_close(rel, RowExclusiveLock);
324 :
325 648 : return myself;
326 : }
327 :
328 : /*
329 : * DefineOpClass
330 : * Define a new index operator class.
331 : */
332 : ObjectAddress
333 556 : 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 : const 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 */
361 556 : namespaceoid = QualifiedNameGetCreationNamespace(stmt->opclassname,
362 : &opcname);
363 :
364 : /* Check we have creation rights in target namespace */
365 556 : aclresult = object_aclcheck(NamespaceRelationId, namespaceoid, GetUserId(), ACL_CREATE);
366 556 : if (aclresult != ACLCHECK_OK)
367 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
368 0 : get_namespace_name(namespaceoid));
369 :
370 : /* Get necessary info about access method */
371 556 : tup = SearchSysCache1(AMNAME, CStringGetDatum(stmt->amname));
372 556 : if (!HeapTupleIsValid(tup))
373 0 : ereport(ERROR,
374 : (errcode(ERRCODE_UNDEFINED_OBJECT),
375 : errmsg("access method \"%s\" does not exist",
376 : stmt->amname)));
377 :
378 556 : amform = (Form_pg_am) GETSTRUCT(tup);
379 556 : amoid = amform->oid;
380 556 : amroutine = GetIndexAmRoutineByAmId(amoid, false);
381 556 : ReleaseSysCache(tup);
382 :
383 556 : maxOpNumber = amroutine->amstrategies;
384 : /* if amstrategies is zero, just enforce that op numbers fit in int16 */
385 556 : if (maxOpNumber <= 0)
386 340 : maxOpNumber = SHRT_MAX;
387 556 : maxProcNumber = amroutine->amsupport;
388 556 : optsProcNumber = amroutine->amoptsprocnum;
389 556 : 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 : */
413 556 : if (!superuser())
414 0 : ereport(ERROR,
415 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
416 : errmsg("must be superuser to create an operator class")));
417 :
418 : /* Look up the datatype */
419 556 : 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 : */
432 556 : if (stmt->opfamilyname)
433 : {
434 44 : opfamilyoid = get_opfamily_oid(amoid, stmt->opfamilyname, false);
435 : }
436 : else
437 : {
438 : /* Lookup existing family of same name and namespace */
439 512 : tup = SearchSysCache3(OPFAMILYAMNAMENSP,
440 : ObjectIdGetDatum(amoid),
441 : PointerGetDatum(opcname),
442 : ObjectIdGetDatum(namespaceoid));
443 512 : if (HeapTupleIsValid(tup))
444 : {
445 12 : 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 12 : ReleaseSysCache(tup);
452 : }
453 : else
454 : {
455 : CreateOpFamilyStmt *opfstmt;
456 : ObjectAddress tmpAddr;
457 :
458 500 : opfstmt = makeNode(CreateOpFamilyStmt);
459 500 : opfstmt->opfamilyname = stmt->opclassname;
460 500 : opfstmt->amname = stmt->amname;
461 :
462 : /*
463 : * Create it ... again no need for more permissions ...
464 : */
465 500 : tmpAddr = CreateOpFamily(opfstmt, opcname, namespaceoid, amoid);
466 500 : opfamilyoid = tmpAddr.objectId;
467 : }
468 : }
469 :
470 556 : operators = NIL;
471 556 : procedures = NIL;
472 :
473 : /* Storage datatype is optional */
474 556 : storageoid = InvalidOid;
475 :
476 : /*
477 : * Scan the "items" list to obtain additional info.
478 : */
479 5496 : foreach(l, stmt->items)
480 : {
481 4940 : CreateOpClassItem *item = lfirst_node(CreateOpClassItem, l);
482 : Oid operOid;
483 : Oid funcOid;
484 : Oid sortfamilyOid;
485 : OpFamilyMember *member;
486 :
487 4940 : switch (item->itemtype)
488 : {
489 2332 : case OPCLASS_ITEM_OPERATOR:
490 2332 : if (item->number <= 0 || item->number > maxOpNumber)
491 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 2332 : if (item->name->objargs != NIL)
497 472 : operOid = LookupOperWithArgs(item->name, false);
498 : else
499 : {
500 : /* Default to binary op on input datatype */
501 1860 : operOid = LookupOperName(NULL, item->name->objname,
502 : typeoid, typeoid,
503 : false, -1);
504 : }
505 :
506 2332 : if (item->order_family)
507 24 : sortfamilyOid = get_opfamily_oid(BTREE_AM_OID,
508 : item->order_family,
509 : false);
510 : else
511 2308 : 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 2332 : member = palloc0_object(OpFamilyMember);
527 2332 : member->is_func = false;
528 2332 : member->object = operOid;
529 2332 : member->number = item->number;
530 2332 : member->sortfamily = sortfamilyOid;
531 2332 : assignOperTypes(member, amoid, typeoid);
532 2332 : addFamilyMember(&operators, member);
533 2332 : break;
534 2254 : case OPCLASS_ITEM_FUNCTION:
535 2254 : if (item->number <= 0 || item->number > maxProcNumber)
536 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 2254 : 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 2254 : member = palloc0_object(OpFamilyMember);
551 2254 : member->is_func = true;
552 2254 : member->object = funcOid;
553 2254 : member->number = item->number;
554 :
555 : /* allow overriding of the function's actual arg types */
556 2254 : if (item->class_args)
557 0 : processTypesSpec(item->class_args,
558 : &member->lefttype, &member->righttype);
559 :
560 2254 : assignProcTypes(member, amoid, typeoid, optsProcNumber);
561 2254 : addFamilyMember(&procedures, member);
562 2254 : break;
563 354 : case OPCLASS_ITEM_STORAGETYPE:
564 354 : if (OidIsValid(storageoid))
565 0 : ereport(ERROR,
566 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
567 : errmsg("storage type specified more than once")));
568 354 : 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
576 354 : break;
577 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 : */
586 556 : if (OidIsValid(storageoid))
587 : {
588 : /* Just drop the spec if same as column datatype */
589 354 : if (storageoid == typeoid)
590 152 : storageoid = InvalidOid;
591 202 : else if (!amstorage)
592 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 :
598 556 : 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 : */
604 556 : if (SearchSysCacheExists3(CLAAMNAMENSP,
605 : ObjectIdGetDatum(amoid),
606 : CStringGetDatum(opcname),
607 : ObjectIdGetDatum(namespaceoid)))
608 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 : */
618 556 : if (stmt->isDefault)
619 : {
620 : ScanKeyData skey[1];
621 : SysScanDesc scan;
622 :
623 438 : ScanKeyInit(&skey[0],
624 : Anum_pg_opclass_opcmethod,
625 : BTEqualStrategyNumber, F_OIDEQ,
626 : ObjectIdGetDatum(amoid));
627 :
628 438 : scan = systable_beginscan(rel, OpclassAmNameNspIndexId, true,
629 : NULL, 1, skey);
630 :
631 10644 : while (HeapTupleIsValid(tup = systable_getnext(scan)))
632 : {
633 10206 : Form_pg_opclass opclass = (Form_pg_opclass) GETSTRUCT(tup);
634 :
635 10206 : if (opclass->opcintype == typeoid && opclass->opcdefault)
636 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 :
645 438 : systable_endscan(scan);
646 : }
647 :
648 : /*
649 : * Okay, let's create the pg_opclass entry.
650 : */
651 556 : memset(values, 0, sizeof(values));
652 556 : memset(nulls, false, sizeof(nulls));
653 :
654 556 : opclassoid = GetNewOidWithIndex(rel, OpclassOidIndexId,
655 : Anum_pg_opclass_oid);
656 556 : values[Anum_pg_opclass_oid - 1] = ObjectIdGetDatum(opclassoid);
657 556 : values[Anum_pg_opclass_opcmethod - 1] = ObjectIdGetDatum(amoid);
658 556 : namestrcpy(&opcName, opcname);
659 556 : values[Anum_pg_opclass_opcname - 1] = NameGetDatum(&opcName);
660 556 : values[Anum_pg_opclass_opcnamespace - 1] = ObjectIdGetDatum(namespaceoid);
661 556 : values[Anum_pg_opclass_opcowner - 1] = ObjectIdGetDatum(GetUserId());
662 556 : values[Anum_pg_opclass_opcfamily - 1] = ObjectIdGetDatum(opfamilyoid);
663 556 : values[Anum_pg_opclass_opcintype - 1] = ObjectIdGetDatum(typeoid);
664 556 : values[Anum_pg_opclass_opcdefault - 1] = BoolGetDatum(stmt->isDefault);
665 556 : values[Anum_pg_opclass_opckeytype - 1] = ObjectIdGetDatum(storageoid);
666 :
667 556 : tup = heap_form_tuple(rel->rd_att, values, nulls);
668 :
669 556 : CatalogTupleInsert(rel, tup);
670 :
671 556 : 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 2888 : foreach(l, operators)
679 : {
680 2332 : OpFamilyMember *op = (OpFamilyMember *) lfirst(l);
681 :
682 2332 : op->ref_is_hard = true;
683 2332 : op->ref_is_family = false;
684 2332 : op->refobjid = opclassoid;
685 : }
686 2810 : foreach(l, procedures)
687 : {
688 2254 : OpFamilyMember *proc = (OpFamilyMember *) lfirst(l);
689 :
690 2254 : proc->ref_is_hard = true;
691 2254 : proc->ref_is_family = false;
692 2254 : 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 : */
699 556 : if (amroutine->amadjustmembers)
700 546 : 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 : */
709 556 : storeOperators(stmt->opfamilyname, amoid, opfamilyoid,
710 : operators, false);
711 556 : storeProcedures(stmt->opfamilyname, amoid, opfamilyoid,
712 : procedures, false);
713 :
714 : /* let event triggers know what happened */
715 556 : 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 : */
721 556 : myself.classId = OperatorClassRelationId;
722 556 : myself.objectId = opclassoid;
723 556 : myself.objectSubId = 0;
724 :
725 : /* dependency on namespace */
726 556 : referenced.classId = NamespaceRelationId;
727 556 : referenced.objectId = namespaceoid;
728 556 : referenced.objectSubId = 0;
729 556 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
730 :
731 : /* dependency on opfamily */
732 556 : referenced.classId = OperatorFamilyRelationId;
733 556 : referenced.objectId = opfamilyoid;
734 556 : referenced.objectSubId = 0;
735 556 : recordDependencyOn(&myself, &referenced, DEPENDENCY_AUTO);
736 :
737 : /* dependency on indexed datatype */
738 556 : referenced.classId = TypeRelationId;
739 556 : referenced.objectId = typeoid;
740 556 : referenced.objectSubId = 0;
741 556 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
742 :
743 : /* dependency on storage datatype */
744 556 : if (OidIsValid(storageoid))
745 : {
746 202 : referenced.classId = TypeRelationId;
747 202 : referenced.objectId = storageoid;
748 202 : referenced.objectSubId = 0;
749 202 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
750 : }
751 :
752 : /* dependency on owner */
753 556 : recordDependencyOnOwner(OperatorClassRelationId, opclassoid, GetUserId());
754 :
755 : /* dependency on extension */
756 556 : recordDependencyOnCurrentExtension(&myself, false);
757 :
758 : /* Post creation hook for new operator class */
759 556 : InvokeObjectPostCreateHook(OperatorClassRelationId, opclassoid, 0);
760 :
761 556 : table_close(rel, RowExclusiveLock);
762 :
763 556 : return myself;
764 : }
765 :
766 :
767 : /*
768 : * DefineOpFamily
769 : * Define a new index operator family.
770 : */
771 : ObjectAddress
772 148 : 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 */
780 148 : namespaceoid = QualifiedNameGetCreationNamespace(stmt->opfamilyname,
781 : &opfname);
782 :
783 : /* Check we have creation rights in target namespace */
784 148 : aclresult = object_aclcheck(NamespaceRelationId, namespaceoid, GetUserId(), ACL_CREATE);
785 148 : if (aclresult != ACLCHECK_OK)
786 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. */
790 148 : 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 : */
798 148 : if (!superuser())
799 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 */
804 148 : 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
817 920 : AlterOpFamily(AlterOpFamilyStmt *stmt)
818 : {
819 : Oid amoid, /* our AM's oid */
820 : opfamilyoid; /* oid of opfamily */
821 : int maxOpNumber, /* amstrategies value */
822 : optsProcNumber, /* amoptsprocnum value */
823 : maxProcNumber; /* amsupport value */
824 : HeapTuple tup;
825 : Form_pg_am amform;
826 : const IndexAmRoutine *amroutine;
827 :
828 : /* Get necessary info about access method */
829 920 : tup = SearchSysCache1(AMNAME, CStringGetDatum(stmt->amname));
830 920 : if (!HeapTupleIsValid(tup))
831 6 : ereport(ERROR,
832 : (errcode(ERRCODE_UNDEFINED_OBJECT),
833 : errmsg("access method \"%s\" does not exist",
834 : stmt->amname)));
835 :
836 914 : amform = (Form_pg_am) GETSTRUCT(tup);
837 914 : amoid = amform->oid;
838 914 : amroutine = GetIndexAmRoutineByAmId(amoid, false);
839 914 : ReleaseSysCache(tup);
840 :
841 914 : maxOpNumber = amroutine->amstrategies;
842 : /* if amstrategies is zero, just enforce that op numbers fit in int16 */
843 914 : if (maxOpNumber <= 0)
844 602 : maxOpNumber = SHRT_MAX;
845 914 : maxProcNumber = amroutine->amsupport;
846 914 : optsProcNumber = amroutine->amoptsprocnum;
847 :
848 : /* XXX Should we make any privilege check against the AM? */
849 :
850 : /* Look up the opfamily */
851 914 : 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 : */
858 908 : if (!superuser())
859 6 : 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 : */
866 902 : if (stmt->isDrop)
867 64 : AlterOpFamilyDrop(stmt, amoid, opfamilyoid,
868 : maxOpNumber, maxProcNumber, stmt->items);
869 : else
870 838 : AlterOpFamilyAdd(stmt, amoid, opfamilyoid,
871 : maxOpNumber, maxProcNumber, optsProcNumber,
872 : stmt->items);
873 :
874 758 : return opfamilyoid;
875 : }
876 :
877 : /*
878 : * ADD part of ALTER OP FAMILY
879 : */
880 : static void
881 838 : AlterOpFamilyAdd(AlterOpFamilyStmt *stmt, Oid amoid, Oid opfamilyoid,
882 : int maxOpNumber, int maxProcNumber, int optsProcNumber,
883 : List *items)
884 : {
885 838 : const IndexAmRoutine *amroutine = GetIndexAmRoutineByAmId(amoid, false);
886 : List *operators; /* OpFamilyMember list for operators */
887 : List *procedures; /* OpFamilyMember list for support procs */
888 : ListCell *l;
889 :
890 838 : operators = NIL;
891 838 : procedures = NIL;
892 :
893 : /*
894 : * Scan the "items" list to obtain additional info.
895 : */
896 2560 : foreach(l, items)
897 : {
898 1836 : CreateOpClassItem *item = lfirst_node(CreateOpClassItem, l);
899 : Oid operOid;
900 : Oid funcOid;
901 : Oid sortfamilyOid;
902 : OpFamilyMember *member;
903 :
904 1836 : switch (item->itemtype)
905 : {
906 1086 : case OPCLASS_ITEM_OPERATOR:
907 1086 : if (item->number <= 0 || item->number > maxOpNumber)
908 12 : 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 1074 : if (item->name->objargs != NIL)
914 1068 : operOid = LookupOperWithArgs(item->name, false);
915 : else
916 : {
917 6 : 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 1068 : if (item->order_family)
924 96 : sortfamilyOid = get_opfamily_oid(BTREE_AM_OID,
925 : item->order_family,
926 : false);
927 : else
928 972 : 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 1068 : member = palloc0_object(OpFamilyMember);
944 1068 : member->is_func = false;
945 1068 : member->object = operOid;
946 1068 : member->number = item->number;
947 1068 : member->sortfamily = sortfamilyOid;
948 : /* We can set up dependency fields immediately */
949 : /* Historically, ALTER ADD has created soft dependencies */
950 1068 : member->ref_is_hard = false;
951 1068 : member->ref_is_family = true;
952 1068 : member->refobjid = opfamilyoid;
953 1068 : assignOperTypes(member, amoid, InvalidOid);
954 1062 : addFamilyMember(&operators, member);
955 1056 : break;
956 744 : case OPCLASS_ITEM_FUNCTION:
957 744 : if (item->number <= 0 || item->number > maxProcNumber)
958 12 : 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)));
963 732 : 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 */
973 726 : member = palloc0_object(OpFamilyMember);
974 726 : member->is_func = true;
975 726 : member->object = funcOid;
976 726 : member->number = item->number;
977 : /* We can set up dependency fields immediately */
978 : /* Historically, ALTER ADD has created soft dependencies */
979 726 : member->ref_is_hard = false;
980 726 : member->ref_is_family = true;
981 726 : member->refobjid = opfamilyoid;
982 :
983 : /* allow overriding of the function's actual arg types */
984 726 : if (item->class_args)
985 590 : processTypesSpec(item->class_args,
986 : &member->lefttype, &member->righttype);
987 :
988 726 : assignProcTypes(member, amoid, InvalidOid, optsProcNumber);
989 672 : addFamilyMember(&procedures, member);
990 666 : break;
991 6 : case OPCLASS_ITEM_STORAGETYPE:
992 6 : ereport(ERROR,
993 : (errcode(ERRCODE_SYNTAX_ERROR),
994 : errmsg("STORAGE cannot be specified in ALTER OPERATOR FAMILY")));
995 : break;
996 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 724 : if (amroutine->amadjustmembers)
1007 724 : 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 724 : storeOperators(stmt->opfamilyname, amoid, opfamilyoid,
1017 : operators, true);
1018 712 : storeProcedures(stmt->opfamilyname, amoid, opfamilyoid,
1019 : procedures, true);
1020 :
1021 : /* make information available to event triggers */
1022 712 : EventTriggerCollectAlterOpFam(stmt, opfamilyoid,
1023 : operators, procedures);
1024 712 : }
1025 :
1026 : /*
1027 : * DROP part of ALTER OP FAMILY
1028 : */
1029 : static void
1030 64 : 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 64 : operators = NIL;
1038 64 : procedures = NIL;
1039 :
1040 : /*
1041 : * Scan the "items" list to obtain additional info.
1042 : */
1043 152 : foreach(l, items)
1044 : {
1045 94 : CreateOpClassItem *item = lfirst_node(CreateOpClassItem, l);
1046 : Oid lefttype,
1047 : righttype;
1048 : OpFamilyMember *member;
1049 :
1050 94 : switch (item->itemtype)
1051 : {
1052 56 : case OPCLASS_ITEM_OPERATOR:
1053 56 : if (item->number <= 0 || item->number > maxOpNumber)
1054 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 56 : processTypesSpec(item->class_args, &lefttype, &righttype);
1060 : /* Save the info */
1061 50 : member = palloc0_object(OpFamilyMember);
1062 50 : member->is_func = false;
1063 50 : member->number = item->number;
1064 50 : member->lefttype = lefttype;
1065 50 : member->righttype = righttype;
1066 50 : addFamilyMember(&operators, member);
1067 50 : break;
1068 38 : case OPCLASS_ITEM_FUNCTION:
1069 38 : if (item->number <= 0 || item->number > maxProcNumber)
1070 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 38 : processTypesSpec(item->class_args, &lefttype, &righttype);
1076 : /* Save the info */
1077 38 : member = palloc0_object(OpFamilyMember);
1078 38 : member->is_func = true;
1079 38 : member->number = item->number;
1080 38 : member->lefttype = lefttype;
1081 38 : member->righttype = righttype;
1082 38 : addFamilyMember(&procedures, member);
1083 38 : break;
1084 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 58 : dropOperators(stmt->opfamilyname, amoid, opfamilyoid, operators);
1096 52 : dropProcedures(stmt->opfamilyname, amoid, opfamilyoid, procedures);
1097 :
1098 : /* make information available to event triggers */
1099 46 : EventTriggerCollectAlterOpFam(stmt, opfamilyoid,
1100 : operators, procedures);
1101 46 : }
1102 :
1103 :
1104 : /*
1105 : * Deal with explicit arg types used in ALTER ADD/DROP
1106 : */
1107 : static void
1108 684 : processTypesSpec(List *args, Oid *lefttype, Oid *righttype)
1109 : {
1110 : TypeName *typeName;
1111 :
1112 : Assert(args != NIL);
1113 :
1114 684 : typeName = (TypeName *) linitial(args);
1115 684 : *lefttype = typenameTypeId(NULL, typeName);
1116 :
1117 684 : if (list_length(args) > 1)
1118 : {
1119 624 : typeName = (TypeName *) lsecond(args);
1120 624 : *righttype = typenameTypeId(NULL, typeName);
1121 : }
1122 : else
1123 60 : *righttype = *lefttype;
1124 :
1125 684 : if (list_length(args) > 2)
1126 6 : ereport(ERROR,
1127 : (errcode(ERRCODE_SYNTAX_ERROR),
1128 : errmsg("one or two argument types must be specified")));
1129 678 : }
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 3400 : assignOperTypes(OpFamilyMember *member, Oid amoid, Oid typeoid)
1138 : {
1139 : Operator optup;
1140 : Form_pg_operator opform;
1141 :
1142 : /* Fetch the operator definition */
1143 3400 : optup = SearchSysCache1(OPEROID, ObjectIdGetDatum(member->object));
1144 3400 : if (!HeapTupleIsValid(optup))
1145 0 : elog(ERROR, "cache lookup failed for operator %u", member->object);
1146 3400 : opform = (Form_pg_operator) GETSTRUCT(optup);
1147 :
1148 : /*
1149 : * Opfamily operators must be binary.
1150 : */
1151 3400 : if (opform->oprkind != 'b')
1152 0 : ereport(ERROR,
1153 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1154 : errmsg("index operators must be binary")));
1155 :
1156 3400 : 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 120 : if (!GetIndexAmRoutineByAmId(amoid, false)->amcanorderbyop)
1169 6 : ereport(ERROR,
1170 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1171 : errmsg("access method \"%s\" does not support ordering operators",
1172 : get_am_name(amoid))));
1173 : }
1174 : else
1175 : {
1176 : /*
1177 : * Search operators must return boolean.
1178 : */
1179 3280 : if (opform->oprresult != BOOLOID)
1180 0 : ereport(ERROR,
1181 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1182 : errmsg("index search operators must return boolean")));
1183 : }
1184 :
1185 : /*
1186 : * If lefttype/righttype isn't specified, use the operator's input types
1187 : */
1188 3394 : if (!OidIsValid(member->lefttype))
1189 3394 : member->lefttype = opform->oprleft;
1190 3394 : if (!OidIsValid(member->righttype))
1191 3394 : member->righttype = opform->oprright;
1192 :
1193 3394 : ReleaseSysCache(optup);
1194 3394 : }
1195 :
1196 : /*
1197 : * Determine the lefttype/righttype to assign to a support procedure,
1198 : * and do any validity checking we can manage.
1199 : */
1200 : static void
1201 2980 : assignProcTypes(OpFamilyMember *member, Oid amoid, Oid typeoid,
1202 : int opclassOptsProcNum)
1203 : {
1204 : HeapTuple proctup;
1205 : Form_pg_proc procform;
1206 :
1207 : /* Fetch the procedure definition */
1208 2980 : proctup = SearchSysCache1(PROCOID, ObjectIdGetDatum(member->object));
1209 2980 : if (!HeapTupleIsValid(proctup))
1210 0 : elog(ERROR, "cache lookup failed for function %u", member->object);
1211 2980 : procform = (Form_pg_proc) GETSTRUCT(proctup);
1212 :
1213 : /* Check the signature of the opclass options parsing function */
1214 2980 : if (member->number == opclassOptsProcNum)
1215 : {
1216 46 : if (OidIsValid(typeoid))
1217 : {
1218 0 : if ((OidIsValid(member->lefttype) && member->lefttype != typeoid) ||
1219 0 : (OidIsValid(member->righttype) && member->righttype != typeoid))
1220 0 : ereport(ERROR,
1221 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1222 : errmsg("associated data types for operator class options parsing functions must match opclass input type")));
1223 : }
1224 : else
1225 : {
1226 46 : if (member->lefttype != member->righttype)
1227 6 : ereport(ERROR,
1228 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1229 : errmsg("left and right associated data types for operator class options parsing functions must match")));
1230 : }
1231 :
1232 40 : if (procform->prorettype != VOIDOID ||
1233 34 : procform->pronargs != 1 ||
1234 34 : procform->proargtypes.values[0] != INTERNALOID)
1235 6 : ereport(ERROR,
1236 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1237 : errmsg("invalid operator class options parsing function"),
1238 : errhint("Valid signature of operator class options parsing function is %s.",
1239 : "(internal) RETURNS void")));
1240 : }
1241 :
1242 : /*
1243 : * Ordering comparison procs must be 2-arg procs returning int4. Ordering
1244 : * sortsupport procs must take internal and return void. Ordering
1245 : * in_range procs must be 5-arg procs returning bool. Ordering equalimage
1246 : * procs must take 1 arg and return bool. Hashing support proc 1 must be
1247 : * a 1-arg proc returning int4, while proc 2 must be a 2-arg proc
1248 : * returning int8. Otherwise we don't know.
1249 : */
1250 2934 : else if (GetIndexAmRoutineByAmId(amoid, false)->amcanorder)
1251 : {
1252 202 : if (member->number == BTORDER_PROC)
1253 : {
1254 182 : if (procform->pronargs != 2)
1255 6 : ereport(ERROR,
1256 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1257 : errmsg("ordering comparison functions must have two arguments")));
1258 176 : if (procform->prorettype != INT4OID)
1259 6 : ereport(ERROR,
1260 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1261 : errmsg("ordering comparison functions must return integer")));
1262 :
1263 : /*
1264 : * If lefttype/righttype isn't specified, use the proc's input
1265 : * types
1266 : */
1267 170 : if (!OidIsValid(member->lefttype))
1268 168 : member->lefttype = procform->proargtypes.values[0];
1269 170 : if (!OidIsValid(member->righttype))
1270 168 : member->righttype = procform->proargtypes.values[1];
1271 : }
1272 20 : else if (member->number == BTSORTSUPPORT_PROC)
1273 : {
1274 4 : if (procform->pronargs != 1 ||
1275 4 : procform->proargtypes.values[0] != INTERNALOID)
1276 0 : ereport(ERROR,
1277 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1278 : errmsg("ordering sort support functions must accept type \"internal\"")));
1279 4 : if (procform->prorettype != VOIDOID)
1280 0 : ereport(ERROR,
1281 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1282 : errmsg("ordering sort support functions must return void")));
1283 :
1284 : /*
1285 : * Can't infer lefttype/righttype from proc, so use default rule
1286 : */
1287 : }
1288 16 : else if (member->number == BTINRANGE_PROC)
1289 : {
1290 0 : if (procform->pronargs != 5)
1291 0 : ereport(ERROR,
1292 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1293 : errmsg("ordering in_range functions must have five arguments")));
1294 0 : if (procform->prorettype != BOOLOID)
1295 0 : ereport(ERROR,
1296 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1297 : errmsg("ordering in_range functions must return boolean")));
1298 :
1299 : /*
1300 : * If lefttype/righttype isn't specified, use the proc's input
1301 : * types (we look at the test-value and offset arguments)
1302 : */
1303 0 : if (!OidIsValid(member->lefttype))
1304 0 : member->lefttype = procform->proargtypes.values[0];
1305 0 : if (!OidIsValid(member->righttype))
1306 0 : member->righttype = procform->proargtypes.values[2];
1307 : }
1308 16 : else if (member->number == BTEQUALIMAGE_PROC)
1309 : {
1310 10 : if (procform->pronargs != 1)
1311 0 : ereport(ERROR,
1312 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1313 : errmsg("ordering equal image functions must have one argument")));
1314 10 : if (procform->prorettype != BOOLOID)
1315 0 : ereport(ERROR,
1316 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1317 : errmsg("ordering equal image functions must return boolean")));
1318 :
1319 : /*
1320 : * pg_amproc functions are indexed by (lefttype, righttype), but
1321 : * an equalimage function can only be called at CREATE INDEX time.
1322 : * The same opclass opcintype OID is always used for lefttype and
1323 : * righttype. Providing a cross-type routine isn't sensible.
1324 : * Reject cross-type ALTER OPERATOR FAMILY ... ADD FUNCTION 4
1325 : * statements here.
1326 : */
1327 10 : if (member->lefttype != member->righttype)
1328 6 : ereport(ERROR,
1329 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1330 : errmsg("ordering equal image functions must not be cross-type")));
1331 : }
1332 6 : else if (member->number == BTSKIPSUPPORT_PROC)
1333 : {
1334 6 : if (procform->pronargs != 1 ||
1335 6 : procform->proargtypes.values[0] != INTERNALOID)
1336 0 : ereport(ERROR,
1337 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1338 : errmsg("btree skip support functions must accept type \"internal\"")));
1339 6 : if (procform->prorettype != VOIDOID)
1340 0 : ereport(ERROR,
1341 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1342 : errmsg("btree skip support functions must return void")));
1343 :
1344 : /*
1345 : * pg_amproc functions are indexed by (lefttype, righttype), but a
1346 : * skip support function doesn't make sense in cross-type
1347 : * scenarios. The same opclass opcintype OID is always used for
1348 : * lefttype and righttype. Providing a cross-type routine isn't
1349 : * sensible. Reject cross-type ALTER OPERATOR FAMILY ... ADD
1350 : * FUNCTION 6 statements here.
1351 : */
1352 6 : if (member->lefttype != member->righttype)
1353 6 : ereport(ERROR,
1354 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1355 : errmsg("btree skip support functions must not be cross-type")));
1356 : }
1357 : }
1358 2732 : else if (GetIndexAmRoutineByAmId(amoid, false)->amcanhash)
1359 : {
1360 120 : if (member->number == HASHSTANDARD_PROC)
1361 : {
1362 62 : if (procform->pronargs != 1)
1363 6 : ereport(ERROR,
1364 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1365 : errmsg("hash function 1 must have one argument")));
1366 56 : if (procform->prorettype != INT4OID)
1367 6 : ereport(ERROR,
1368 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1369 : errmsg("hash function 1 must return integer")));
1370 : }
1371 58 : else if (member->number == HASHEXTENDED_PROC)
1372 : {
1373 58 : if (procform->pronargs != 2)
1374 0 : ereport(ERROR,
1375 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1376 : errmsg("hash function 2 must have two arguments")));
1377 58 : if (procform->prorettype != INT8OID)
1378 0 : ereport(ERROR,
1379 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1380 : errmsg("hash function 2 must return bigint")));
1381 : }
1382 :
1383 : /*
1384 : * If lefttype/righttype isn't specified, use the proc's input type
1385 : */
1386 108 : if (!OidIsValid(member->lefttype))
1387 102 : member->lefttype = procform->proargtypes.values[0];
1388 108 : if (!OidIsValid(member->righttype))
1389 102 : member->righttype = procform->proargtypes.values[0];
1390 : }
1391 :
1392 : /*
1393 : * The default in CREATE OPERATOR CLASS is to use the class' opcintype as
1394 : * lefttype and righttype. In CREATE or ALTER OPERATOR FAMILY, opcintype
1395 : * isn't available, so make the user specify the types.
1396 : */
1397 2932 : if (!OidIsValid(member->lefttype))
1398 2096 : member->lefttype = typeoid;
1399 2932 : if (!OidIsValid(member->righttype))
1400 2096 : member->righttype = typeoid;
1401 :
1402 2932 : if (!OidIsValid(member->lefttype) || !OidIsValid(member->righttype))
1403 6 : ereport(ERROR,
1404 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1405 : errmsg("associated data types must be specified for index support function")));
1406 :
1407 2926 : ReleaseSysCache(proctup);
1408 2926 : }
1409 :
1410 : /*
1411 : * Add a new family member to the appropriate list, after checking for
1412 : * duplicated strategy or proc number.
1413 : */
1414 : static void
1415 6408 : addFamilyMember(List **list, OpFamilyMember *member)
1416 : {
1417 : ListCell *l;
1418 :
1419 20864 : foreach(l, *list)
1420 : {
1421 14468 : OpFamilyMember *old = (OpFamilyMember *) lfirst(l);
1422 :
1423 14468 : if (old->number == member->number &&
1424 390 : old->lefttype == member->lefttype &&
1425 390 : old->righttype == member->righttype)
1426 : {
1427 12 : if (member->is_func)
1428 6 : ereport(ERROR,
1429 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1430 : errmsg("function number %d for (%s,%s) appears more than once",
1431 : member->number,
1432 : format_type_be(member->lefttype),
1433 : format_type_be(member->righttype))));
1434 : else
1435 6 : ereport(ERROR,
1436 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1437 : errmsg("operator number %d for (%s,%s) appears more than once",
1438 : member->number,
1439 : format_type_be(member->lefttype),
1440 : format_type_be(member->righttype))));
1441 : }
1442 : }
1443 6396 : *list = lappend(*list, member);
1444 6396 : }
1445 :
1446 : /*
1447 : * Dump the operators to pg_amop
1448 : *
1449 : * We also make dependency entries in pg_depend for the pg_amop entries.
1450 : */
1451 : static void
1452 1280 : storeOperators(List *opfamilyname, Oid amoid, Oid opfamilyoid,
1453 : List *operators, bool isAdd)
1454 : {
1455 : Relation rel;
1456 : Datum values[Natts_pg_amop];
1457 : bool nulls[Natts_pg_amop];
1458 : HeapTuple tup;
1459 : Oid entryoid;
1460 : ObjectAddress myself,
1461 : referenced;
1462 : ListCell *l;
1463 :
1464 1280 : rel = table_open(AccessMethodOperatorRelationId, RowExclusiveLock);
1465 :
1466 4596 : foreach(l, operators)
1467 : {
1468 3328 : OpFamilyMember *op = (OpFamilyMember *) lfirst(l);
1469 : char oppurpose;
1470 :
1471 : /*
1472 : * If adding to an existing family, check for conflict with an
1473 : * existing pg_amop entry (just to give a nicer error message)
1474 : */
1475 4324 : if (isAdd &&
1476 996 : SearchSysCacheExists4(AMOPSTRATEGY,
1477 : ObjectIdGetDatum(opfamilyoid),
1478 : ObjectIdGetDatum(op->lefttype),
1479 : ObjectIdGetDatum(op->righttype),
1480 : Int16GetDatum(op->number)))
1481 12 : ereport(ERROR,
1482 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1483 : errmsg("operator %d(%s,%s) already exists in operator family \"%s\"",
1484 : op->number,
1485 : format_type_be(op->lefttype),
1486 : format_type_be(op->righttype),
1487 : NameListToString(opfamilyname))));
1488 :
1489 3316 : oppurpose = OidIsValid(op->sortfamily) ? AMOP_ORDER : AMOP_SEARCH;
1490 :
1491 : /* Create the pg_amop entry */
1492 3316 : memset(values, 0, sizeof(values));
1493 3316 : memset(nulls, false, sizeof(nulls));
1494 :
1495 3316 : entryoid = GetNewOidWithIndex(rel, AccessMethodOperatorOidIndexId,
1496 : Anum_pg_amop_oid);
1497 3316 : values[Anum_pg_amop_oid - 1] = ObjectIdGetDatum(entryoid);
1498 3316 : values[Anum_pg_amop_amopfamily - 1] = ObjectIdGetDatum(opfamilyoid);
1499 3316 : values[Anum_pg_amop_amoplefttype - 1] = ObjectIdGetDatum(op->lefttype);
1500 3316 : values[Anum_pg_amop_amoprighttype - 1] = ObjectIdGetDatum(op->righttype);
1501 3316 : values[Anum_pg_amop_amopstrategy - 1] = Int16GetDatum(op->number);
1502 3316 : values[Anum_pg_amop_amoppurpose - 1] = CharGetDatum(oppurpose);
1503 3316 : values[Anum_pg_amop_amopopr - 1] = ObjectIdGetDatum(op->object);
1504 3316 : values[Anum_pg_amop_amopmethod - 1] = ObjectIdGetDatum(amoid);
1505 3316 : values[Anum_pg_amop_amopsortfamily - 1] = ObjectIdGetDatum(op->sortfamily);
1506 :
1507 3316 : tup = heap_form_tuple(rel->rd_att, values, nulls);
1508 :
1509 3316 : CatalogTupleInsert(rel, tup);
1510 :
1511 3316 : heap_freetuple(tup);
1512 :
1513 : /* Make its dependencies */
1514 3316 : myself.classId = AccessMethodOperatorRelationId;
1515 3316 : myself.objectId = entryoid;
1516 3316 : myself.objectSubId = 0;
1517 :
1518 3316 : referenced.classId = OperatorRelationId;
1519 3316 : referenced.objectId = op->object;
1520 3316 : referenced.objectSubId = 0;
1521 :
1522 : /* see comments in amapi.h about dependency strength */
1523 3316 : recordDependencyOn(&myself, &referenced,
1524 3316 : op->ref_is_hard ? DEPENDENCY_NORMAL : DEPENDENCY_AUTO);
1525 :
1526 3316 : referenced.classId = op->ref_is_family ? OperatorFamilyRelationId :
1527 : OperatorClassRelationId;
1528 3316 : referenced.objectId = op->refobjid;
1529 3316 : referenced.objectSubId = 0;
1530 :
1531 3316 : recordDependencyOn(&myself, &referenced,
1532 3316 : op->ref_is_hard ? DEPENDENCY_INTERNAL : DEPENDENCY_AUTO);
1533 :
1534 3316 : if (typeDepNeeded(op->lefttype, op))
1535 : {
1536 0 : referenced.classId = TypeRelationId;
1537 0 : referenced.objectId = op->lefttype;
1538 0 : referenced.objectSubId = 0;
1539 :
1540 : /* see comments in amapi.h about dependency strength */
1541 0 : recordDependencyOn(&myself, &referenced,
1542 0 : op->ref_is_hard ? DEPENDENCY_NORMAL : DEPENDENCY_AUTO);
1543 : }
1544 :
1545 4152 : if (op->lefttype != op->righttype &&
1546 836 : typeDepNeeded(op->righttype, op))
1547 : {
1548 0 : referenced.classId = TypeRelationId;
1549 0 : referenced.objectId = op->righttype;
1550 0 : referenced.objectSubId = 0;
1551 :
1552 : /* see comments in amapi.h about dependency strength */
1553 0 : recordDependencyOn(&myself, &referenced,
1554 0 : op->ref_is_hard ? DEPENDENCY_NORMAL : DEPENDENCY_AUTO);
1555 : }
1556 :
1557 : /* A search operator also needs a dep on the referenced opfamily */
1558 3316 : if (OidIsValid(op->sortfamily))
1559 : {
1560 114 : referenced.classId = OperatorFamilyRelationId;
1561 114 : referenced.objectId = op->sortfamily;
1562 114 : referenced.objectSubId = 0;
1563 :
1564 114 : recordDependencyOn(&myself, &referenced,
1565 114 : op->ref_is_hard ? DEPENDENCY_NORMAL : DEPENDENCY_AUTO);
1566 : }
1567 :
1568 : /* Post create hook of this access method operator */
1569 3316 : InvokeObjectPostCreateHook(AccessMethodOperatorRelationId,
1570 : entryoid, 0);
1571 : }
1572 :
1573 1268 : table_close(rel, RowExclusiveLock);
1574 1268 : }
1575 :
1576 : /*
1577 : * Dump the procedures (support routines) to pg_amproc
1578 : *
1579 : * We also make dependency entries in pg_depend for the pg_amproc entries.
1580 : */
1581 : static void
1582 1268 : storeProcedures(List *opfamilyname, Oid amoid, Oid opfamilyoid,
1583 : List *procedures, bool isAdd)
1584 : {
1585 : Relation rel;
1586 : Datum values[Natts_pg_amproc];
1587 : bool nulls[Natts_pg_amproc];
1588 : HeapTuple tup;
1589 : Oid entryoid;
1590 : ObjectAddress myself,
1591 : referenced;
1592 : ListCell *l;
1593 :
1594 1268 : rel = table_open(AccessMethodProcedureRelationId, RowExclusiveLock);
1595 :
1596 4176 : foreach(l, procedures)
1597 : {
1598 2908 : OpFamilyMember *proc = (OpFamilyMember *) lfirst(l);
1599 :
1600 : /*
1601 : * If adding to an existing family, check for conflict with an
1602 : * existing pg_amproc entry (just to give a nicer error message)
1603 : */
1604 3562 : if (isAdd &&
1605 654 : SearchSysCacheExists4(AMPROCNUM,
1606 : ObjectIdGetDatum(opfamilyoid),
1607 : ObjectIdGetDatum(proc->lefttype),
1608 : ObjectIdGetDatum(proc->righttype),
1609 : Int16GetDatum(proc->number)))
1610 0 : ereport(ERROR,
1611 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1612 : errmsg("function %d(%s,%s) already exists in operator family \"%s\"",
1613 : proc->number,
1614 : format_type_be(proc->lefttype),
1615 : format_type_be(proc->righttype),
1616 : NameListToString(opfamilyname))));
1617 :
1618 : /* Create the pg_amproc entry */
1619 2908 : memset(values, 0, sizeof(values));
1620 2908 : memset(nulls, false, sizeof(nulls));
1621 :
1622 2908 : entryoid = GetNewOidWithIndex(rel, AccessMethodProcedureOidIndexId,
1623 : Anum_pg_amproc_oid);
1624 2908 : values[Anum_pg_amproc_oid - 1] = ObjectIdGetDatum(entryoid);
1625 2908 : values[Anum_pg_amproc_amprocfamily - 1] = ObjectIdGetDatum(opfamilyoid);
1626 2908 : values[Anum_pg_amproc_amproclefttype - 1] = ObjectIdGetDatum(proc->lefttype);
1627 2908 : values[Anum_pg_amproc_amprocrighttype - 1] = ObjectIdGetDatum(proc->righttype);
1628 2908 : values[Anum_pg_amproc_amprocnum - 1] = Int16GetDatum(proc->number);
1629 2908 : values[Anum_pg_amproc_amproc - 1] = ObjectIdGetDatum(proc->object);
1630 :
1631 2908 : tup = heap_form_tuple(rel->rd_att, values, nulls);
1632 :
1633 2908 : CatalogTupleInsert(rel, tup);
1634 :
1635 2908 : heap_freetuple(tup);
1636 :
1637 : /* Make its dependencies */
1638 2908 : myself.classId = AccessMethodProcedureRelationId;
1639 2908 : myself.objectId = entryoid;
1640 2908 : myself.objectSubId = 0;
1641 :
1642 2908 : referenced.classId = ProcedureRelationId;
1643 2908 : referenced.objectId = proc->object;
1644 2908 : referenced.objectSubId = 0;
1645 :
1646 : /* see comments in amapi.h about dependency strength */
1647 2908 : recordDependencyOn(&myself, &referenced,
1648 2908 : proc->ref_is_hard ? DEPENDENCY_NORMAL : DEPENDENCY_AUTO);
1649 :
1650 2908 : referenced.classId = proc->ref_is_family ? OperatorFamilyRelationId :
1651 : OperatorClassRelationId;
1652 2908 : referenced.objectId = proc->refobjid;
1653 2908 : referenced.objectSubId = 0;
1654 :
1655 2908 : recordDependencyOn(&myself, &referenced,
1656 2908 : proc->ref_is_hard ? DEPENDENCY_INTERNAL : DEPENDENCY_AUTO);
1657 :
1658 2908 : if (typeDepNeeded(proc->lefttype, proc))
1659 : {
1660 218 : referenced.classId = TypeRelationId;
1661 218 : referenced.objectId = proc->lefttype;
1662 218 : referenced.objectSubId = 0;
1663 :
1664 : /* see comments in amapi.h about dependency strength */
1665 218 : recordDependencyOn(&myself, &referenced,
1666 218 : proc->ref_is_hard ? DEPENDENCY_NORMAL : DEPENDENCY_AUTO);
1667 : }
1668 :
1669 2972 : if (proc->lefttype != proc->righttype &&
1670 64 : typeDepNeeded(proc->righttype, proc))
1671 : {
1672 0 : referenced.classId = TypeRelationId;
1673 0 : referenced.objectId = proc->righttype;
1674 0 : referenced.objectSubId = 0;
1675 :
1676 : /* see comments in amapi.h about dependency strength */
1677 0 : recordDependencyOn(&myself, &referenced,
1678 0 : proc->ref_is_hard ? DEPENDENCY_NORMAL : DEPENDENCY_AUTO);
1679 : }
1680 :
1681 : /* Post create hook of access method procedure */
1682 2908 : InvokeObjectPostCreateHook(AccessMethodProcedureRelationId,
1683 : entryoid, 0);
1684 : }
1685 :
1686 1268 : table_close(rel, RowExclusiveLock);
1687 1268 : }
1688 :
1689 : /*
1690 : * Detect whether a pg_amop or pg_amproc entry needs an explicit dependency
1691 : * on its lefttype or righttype.
1692 : *
1693 : * We make such a dependency unless the entry has an indirect dependency
1694 : * via its referenced operator or function. That's nearly always true
1695 : * for operators, but might well not be true for support functions.
1696 : */
1697 : static bool
1698 7124 : typeDepNeeded(Oid typid, OpFamilyMember *member)
1699 : {
1700 7124 : bool result = true;
1701 :
1702 : /*
1703 : * If the type is pinned, we don't need a dependency. This is a bit of a
1704 : * layering violation perhaps (recordDependencyOn would ignore the request
1705 : * anyway), but it's a cheap test and will frequently save a syscache
1706 : * lookup here.
1707 : */
1708 7124 : if (IsPinnedObject(TypeRelationId, typid))
1709 5398 : return false;
1710 :
1711 : /* Nope, so check the input types of the function or operator. */
1712 1726 : if (member->is_func)
1713 : {
1714 : Oid *argtypes;
1715 : int nargs;
1716 :
1717 518 : (void) get_func_signature(member->object, &argtypes, &nargs);
1718 1034 : for (int i = 0; i < nargs; i++)
1719 : {
1720 816 : if (typid == argtypes[i])
1721 : {
1722 300 : result = false; /* match, no dependency needed */
1723 300 : break;
1724 : }
1725 : }
1726 518 : pfree(argtypes);
1727 : }
1728 : else
1729 : {
1730 : Oid lefttype,
1731 : righttype;
1732 :
1733 1208 : op_input_types(member->object, &lefttype, &righttype);
1734 1208 : if (typid == lefttype || typid == righttype)
1735 1208 : result = false; /* match, no dependency needed */
1736 : }
1737 1726 : return result;
1738 : }
1739 :
1740 :
1741 : /*
1742 : * Remove operator entries from an opfamily.
1743 : *
1744 : * Note: this is only allowed for "loose" members of an opfamily, hence
1745 : * behavior is always RESTRICT.
1746 : */
1747 : static void
1748 58 : dropOperators(List *opfamilyname, Oid amoid, Oid opfamilyoid,
1749 : List *operators)
1750 : {
1751 : ListCell *l;
1752 :
1753 102 : foreach(l, operators)
1754 : {
1755 50 : OpFamilyMember *op = (OpFamilyMember *) lfirst(l);
1756 : Oid amopid;
1757 : ObjectAddress object;
1758 :
1759 50 : amopid = GetSysCacheOid4(AMOPSTRATEGY, Anum_pg_amop_oid,
1760 : ObjectIdGetDatum(opfamilyoid),
1761 : ObjectIdGetDatum(op->lefttype),
1762 : ObjectIdGetDatum(op->righttype),
1763 : Int16GetDatum(op->number));
1764 50 : if (!OidIsValid(amopid))
1765 6 : ereport(ERROR,
1766 : (errcode(ERRCODE_UNDEFINED_OBJECT),
1767 : errmsg("operator %d(%s,%s) does not exist in operator family \"%s\"",
1768 : op->number,
1769 : format_type_be(op->lefttype),
1770 : format_type_be(op->righttype),
1771 : NameListToString(opfamilyname))));
1772 :
1773 44 : object.classId = AccessMethodOperatorRelationId;
1774 44 : object.objectId = amopid;
1775 44 : object.objectSubId = 0;
1776 :
1777 44 : performDeletion(&object, DROP_RESTRICT, 0);
1778 : }
1779 52 : }
1780 :
1781 : /*
1782 : * Remove procedure entries from an opfamily.
1783 : *
1784 : * Note: this is only allowed for "loose" members of an opfamily, hence
1785 : * behavior is always RESTRICT.
1786 : */
1787 : static void
1788 52 : dropProcedures(List *opfamilyname, Oid amoid, Oid opfamilyoid,
1789 : List *procedures)
1790 : {
1791 : ListCell *l;
1792 :
1793 84 : foreach(l, procedures)
1794 : {
1795 38 : OpFamilyMember *op = (OpFamilyMember *) lfirst(l);
1796 : Oid amprocid;
1797 : ObjectAddress object;
1798 :
1799 38 : amprocid = GetSysCacheOid4(AMPROCNUM, Anum_pg_amproc_oid,
1800 : ObjectIdGetDatum(opfamilyoid),
1801 : ObjectIdGetDatum(op->lefttype),
1802 : ObjectIdGetDatum(op->righttype),
1803 : Int16GetDatum(op->number));
1804 38 : if (!OidIsValid(amprocid))
1805 6 : ereport(ERROR,
1806 : (errcode(ERRCODE_UNDEFINED_OBJECT),
1807 : errmsg("function %d(%s,%s) does not exist in operator family \"%s\"",
1808 : op->number,
1809 : format_type_be(op->lefttype),
1810 : format_type_be(op->righttype),
1811 : NameListToString(opfamilyname))));
1812 :
1813 32 : object.classId = AccessMethodProcedureRelationId;
1814 32 : object.objectId = amprocid;
1815 32 : object.objectSubId = 0;
1816 :
1817 32 : performDeletion(&object, DROP_RESTRICT, 0);
1818 : }
1819 46 : }
1820 :
1821 : /*
1822 : * Subroutine for ALTER OPERATOR CLASS SET SCHEMA/RENAME
1823 : *
1824 : * Is there an operator class with the given name and signature already
1825 : * in the given namespace? If so, raise an appropriate error message.
1826 : */
1827 : void
1828 36 : IsThereOpClassInNamespace(const char *opcname, Oid opcmethod,
1829 : Oid opcnamespace)
1830 : {
1831 : /* make sure the new name doesn't exist */
1832 36 : if (SearchSysCacheExists3(CLAAMNAMENSP,
1833 : ObjectIdGetDatum(opcmethod),
1834 : CStringGetDatum(opcname),
1835 : ObjectIdGetDatum(opcnamespace)))
1836 12 : ereport(ERROR,
1837 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1838 : errmsg("operator class \"%s\" for access method \"%s\" already exists in schema \"%s\"",
1839 : opcname,
1840 : get_am_name(opcmethod),
1841 : get_namespace_name(opcnamespace))));
1842 24 : }
1843 :
1844 : /*
1845 : * Subroutine for ALTER OPERATOR FAMILY SET SCHEMA/RENAME
1846 : *
1847 : * Is there an operator family with the given name and signature already
1848 : * in the given namespace? If so, raise an appropriate error message.
1849 : */
1850 : void
1851 36 : IsThereOpFamilyInNamespace(const char *opfname, Oid opfmethod,
1852 : Oid opfnamespace)
1853 : {
1854 : /* make sure the new name doesn't exist */
1855 36 : if (SearchSysCacheExists3(OPFAMILYAMNAMENSP,
1856 : ObjectIdGetDatum(opfmethod),
1857 : CStringGetDatum(opfname),
1858 : ObjectIdGetDatum(opfnamespace)))
1859 12 : ereport(ERROR,
1860 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1861 : errmsg("operator family \"%s\" for access method \"%s\" already exists in schema \"%s\"",
1862 : opfname,
1863 : get_am_name(opfmethod),
1864 : get_namespace_name(opfnamespace))));
1865 24 : }
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