Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * typecmds.c
4 : * Routines for SQL commands that manipulate types (and domains).
5 : *
6 : * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
7 : * Portions Copyright (c) 1994, Regents of the University of California
8 : *
9 : *
10 : * IDENTIFICATION
11 : * src/backend/commands/typecmds.c
12 : *
13 : * DESCRIPTION
14 : * The "DefineFoo" routines take the parse tree and pick out the
15 : * appropriate arguments/flags, passing the results to the
16 : * corresponding "FooCreate" routines (in src/backend/catalog) that do
17 : * the actual catalog-munging. These routines also verify permission
18 : * of the user to execute the command.
19 : *
20 : * NOTES
21 : * These things must be defined and committed in the following order:
22 : * "create function":
23 : * input/output, recv/send functions
24 : * "create type":
25 : * type
26 : * "create operator":
27 : * operators
28 : *
29 : *
30 : *-------------------------------------------------------------------------
31 : */
32 : #include "postgres.h"
33 :
34 : #include "access/genam.h"
35 : #include "access/htup_details.h"
36 : #include "access/relation.h"
37 : #include "access/table.h"
38 : #include "access/tableam.h"
39 : #include "access/xact.h"
40 : #include "catalog/binary_upgrade.h"
41 : #include "catalog/catalog.h"
42 : #include "catalog/heap.h"
43 : #include "catalog/objectaccess.h"
44 : #include "catalog/pg_am.h"
45 : #include "catalog/pg_authid.h"
46 : #include "catalog/pg_cast.h"
47 : #include "catalog/pg_collation.h"
48 : #include "catalog/pg_constraint.h"
49 : #include "catalog/pg_depend.h"
50 : #include "catalog/pg_enum.h"
51 : #include "catalog/pg_language.h"
52 : #include "catalog/pg_namespace.h"
53 : #include "catalog/pg_proc.h"
54 : #include "catalog/pg_range.h"
55 : #include "catalog/pg_type.h"
56 : #include "commands/defrem.h"
57 : #include "commands/tablecmds.h"
58 : #include "commands/typecmds.h"
59 : #include "executor/executor.h"
60 : #include "miscadmin.h"
61 : #include "nodes/makefuncs.h"
62 : #include "optimizer/optimizer.h"
63 : #include "parser/parse_coerce.h"
64 : #include "parser/parse_collate.h"
65 : #include "parser/parse_expr.h"
66 : #include "parser/parse_func.h"
67 : #include "parser/parse_type.h"
68 : #include "utils/builtins.h"
69 : #include "utils/fmgroids.h"
70 : #include "utils/inval.h"
71 : #include "utils/lsyscache.h"
72 : #include "utils/rel.h"
73 : #include "utils/ruleutils.h"
74 : #include "utils/snapmgr.h"
75 : #include "utils/syscache.h"
76 :
77 :
78 : /* result structure for get_rels_with_domain() */
79 : typedef struct
80 : {
81 : Relation rel; /* opened and locked relation */
82 : int natts; /* number of attributes of interest */
83 : int *atts; /* attribute numbers */
84 : /* atts[] is of allocated length RelationGetNumberOfAttributes(rel) */
85 : } RelToCheck;
86 :
87 : /* parameter structure for AlterTypeRecurse() */
88 : typedef struct
89 : {
90 : /* Flags indicating which type attributes to update */
91 : bool updateStorage;
92 : bool updateReceive;
93 : bool updateSend;
94 : bool updateTypmodin;
95 : bool updateTypmodout;
96 : bool updateAnalyze;
97 : bool updateSubscript;
98 : /* New values for relevant attributes */
99 : char storage;
100 : Oid receiveOid;
101 : Oid sendOid;
102 : Oid typmodinOid;
103 : Oid typmodoutOid;
104 : Oid analyzeOid;
105 : Oid subscriptOid;
106 : } AlterTypeRecurseParams;
107 :
108 : /* Potentially set by pg_upgrade_support functions */
109 : Oid binary_upgrade_next_array_pg_type_oid = InvalidOid;
110 : Oid binary_upgrade_next_mrng_pg_type_oid = InvalidOid;
111 : Oid binary_upgrade_next_mrng_array_pg_type_oid = InvalidOid;
112 :
113 : static void makeRangeConstructors(const char *name, Oid namespace,
114 : Oid rangeOid, Oid subtype);
115 : static void makeMultirangeConstructors(const char *name, Oid namespace,
116 : Oid multirangeOid, Oid rangeOid,
117 : Oid rangeArrayOid, Oid *castFuncOid);
118 : static Oid findTypeInputFunction(List *procname, Oid typeOid);
119 : static Oid findTypeOutputFunction(List *procname, Oid typeOid);
120 : static Oid findTypeReceiveFunction(List *procname, Oid typeOid);
121 : static Oid findTypeSendFunction(List *procname, Oid typeOid);
122 : static Oid findTypeTypmodinFunction(List *procname);
123 : static Oid findTypeTypmodoutFunction(List *procname);
124 : static Oid findTypeAnalyzeFunction(List *procname, Oid typeOid);
125 : static Oid findTypeSubscriptingFunction(List *procname, Oid typeOid);
126 : static Oid findRangeSubOpclass(List *opcname, Oid subtype);
127 : static Oid findRangeCanonicalFunction(List *procname, Oid typeOid);
128 : static Oid findRangeSubtypeDiffFunction(List *procname, Oid subtype);
129 : static void validateDomainCheckConstraint(Oid domainoid, const char *ccbin);
130 : static void validateDomainNotNullConstraint(Oid domainoid);
131 : static List *get_rels_with_domain(Oid domainOid, LOCKMODE lockmode);
132 : static void checkEnumOwner(HeapTuple tup);
133 : static char *domainAddCheckConstraint(Oid domainOid, Oid domainNamespace,
134 : Oid baseTypeOid,
135 : int typMod, Constraint *constr,
136 : const char *domainName, ObjectAddress *constrAddr);
137 : static Node *replace_domain_constraint_value(ParseState *pstate,
138 : ColumnRef *cref);
139 : static void domainAddNotNullConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
140 : int typMod, Constraint *constr,
141 : const char *domainName, ObjectAddress *constrAddr);
142 : static void AlterTypeRecurse(Oid typeOid, bool isImplicitArray,
143 : HeapTuple tup, Relation catalog,
144 : AlterTypeRecurseParams *atparams);
145 :
146 :
147 : /*
148 : * DefineType
149 : * Registers a new base type.
150 : */
151 : ObjectAddress
152 372 : DefineType(ParseState *pstate, List *names, List *parameters)
153 : {
154 : char *typeName;
155 : Oid typeNamespace;
156 372 : int16 internalLength = -1; /* default: variable-length */
157 372 : List *inputName = NIL;
158 372 : List *outputName = NIL;
159 372 : List *receiveName = NIL;
160 372 : List *sendName = NIL;
161 372 : List *typmodinName = NIL;
162 372 : List *typmodoutName = NIL;
163 372 : List *analyzeName = NIL;
164 372 : List *subscriptName = NIL;
165 372 : char category = TYPCATEGORY_USER;
166 372 : bool preferred = false;
167 372 : char delimiter = DEFAULT_TYPDELIM;
168 372 : Oid elemType = InvalidOid;
169 372 : char *defaultValue = NULL;
170 372 : bool byValue = false;
171 372 : char alignment = TYPALIGN_INT; /* default alignment */
172 372 : char storage = TYPSTORAGE_PLAIN; /* default TOAST storage method */
173 372 : Oid collation = InvalidOid;
174 372 : DefElem *likeTypeEl = NULL;
175 372 : DefElem *internalLengthEl = NULL;
176 372 : DefElem *inputNameEl = NULL;
177 372 : DefElem *outputNameEl = NULL;
178 372 : DefElem *receiveNameEl = NULL;
179 372 : DefElem *sendNameEl = NULL;
180 372 : DefElem *typmodinNameEl = NULL;
181 372 : DefElem *typmodoutNameEl = NULL;
182 372 : DefElem *analyzeNameEl = NULL;
183 372 : DefElem *subscriptNameEl = NULL;
184 372 : DefElem *categoryEl = NULL;
185 372 : DefElem *preferredEl = NULL;
186 372 : DefElem *delimiterEl = NULL;
187 372 : DefElem *elemTypeEl = NULL;
188 372 : DefElem *defaultValueEl = NULL;
189 372 : DefElem *byValueEl = NULL;
190 372 : DefElem *alignmentEl = NULL;
191 372 : DefElem *storageEl = NULL;
192 372 : DefElem *collatableEl = NULL;
193 : Oid inputOid;
194 : Oid outputOid;
195 372 : Oid receiveOid = InvalidOid;
196 372 : Oid sendOid = InvalidOid;
197 372 : Oid typmodinOid = InvalidOid;
198 372 : Oid typmodoutOid = InvalidOid;
199 372 : Oid analyzeOid = InvalidOid;
200 372 : Oid subscriptOid = InvalidOid;
201 : char *array_type;
202 : Oid array_oid;
203 : Oid typoid;
204 : ListCell *pl;
205 : ObjectAddress address;
206 :
207 : /*
208 : * As of Postgres 8.4, we require superuser privilege to create a base
209 : * type. This is simple paranoia: there are too many ways to mess up the
210 : * system with an incorrect type definition (for instance, representation
211 : * parameters that don't match what the C code expects). In practice it
212 : * takes superuser privilege to create the I/O functions, and so the
213 : * former requirement that you own the I/O functions pretty much forced
214 : * superuserness anyway. We're just making doubly sure here.
215 : *
216 : * XXX re-enable NOT_USED code sections below if you remove this test.
217 : */
218 372 : if (!superuser())
219 0 : ereport(ERROR,
220 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
221 : errmsg("must be superuser to create a base type")));
222 :
223 : /* Convert list of names to a name and namespace */
224 372 : typeNamespace = QualifiedNameGetCreationNamespace(names, &typeName);
225 :
226 : #ifdef NOT_USED
227 : /* XXX this is unnecessary given the superuser check above */
228 : /* Check we have creation rights in target namespace */
229 : aclresult = object_aclcheck(NamespaceRelationId, typeNamespace, GetUserId(), ACL_CREATE);
230 : if (aclresult != ACLCHECK_OK)
231 : aclcheck_error(aclresult, OBJECT_SCHEMA,
232 : get_namespace_name(typeNamespace));
233 : #endif
234 :
235 : /*
236 : * Look to see if type already exists.
237 : */
238 372 : typoid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
239 : CStringGetDatum(typeName),
240 : ObjectIdGetDatum(typeNamespace));
241 :
242 : /*
243 : * If it's not a shell, see if it's an autogenerated array type, and if so
244 : * rename it out of the way.
245 : */
246 372 : if (OidIsValid(typoid) && get_typisdefined(typoid))
247 : {
248 6 : if (moveArrayTypeName(typoid, typeName, typeNamespace))
249 0 : typoid = InvalidOid;
250 : else
251 6 : ereport(ERROR,
252 : (errcode(ERRCODE_DUPLICATE_OBJECT),
253 : errmsg("type \"%s\" already exists", typeName)));
254 : }
255 :
256 : /*
257 : * If this command is a parameterless CREATE TYPE, then we're just here to
258 : * make a shell type, so do that (or fail if there already is a shell).
259 : */
260 366 : if (parameters == NIL)
261 : {
262 150 : if (OidIsValid(typoid))
263 6 : ereport(ERROR,
264 : (errcode(ERRCODE_DUPLICATE_OBJECT),
265 : errmsg("type \"%s\" already exists", typeName)));
266 :
267 144 : address = TypeShellMake(typeName, typeNamespace, GetUserId());
268 144 : return address;
269 : }
270 :
271 : /*
272 : * Otherwise, we must already have a shell type, since there is no other
273 : * way that the I/O functions could have been created.
274 : */
275 216 : if (!OidIsValid(typoid))
276 6 : ereport(ERROR,
277 : (errcode(ERRCODE_DUPLICATE_OBJECT),
278 : errmsg("type \"%s\" does not exist", typeName),
279 : errhint("Create the type as a shell type, then create its I/O functions, then do a full CREATE TYPE.")));
280 :
281 : /* Extract the parameters from the parameter list */
282 1082 : foreach(pl, parameters)
283 : {
284 872 : DefElem *defel = (DefElem *) lfirst(pl);
285 : DefElem **defelp;
286 :
287 872 : if (strcmp(defel->defname, "like") == 0)
288 56 : defelp = &likeTypeEl;
289 816 : else if (strcmp(defel->defname, "internallength") == 0)
290 132 : defelp = &internalLengthEl;
291 684 : else if (strcmp(defel->defname, "input") == 0)
292 204 : defelp = &inputNameEl;
293 480 : else if (strcmp(defel->defname, "output") == 0)
294 204 : defelp = &outputNameEl;
295 276 : else if (strcmp(defel->defname, "receive") == 0)
296 18 : defelp = &receiveNameEl;
297 258 : else if (strcmp(defel->defname, "send") == 0)
298 18 : defelp = &sendNameEl;
299 240 : else if (strcmp(defel->defname, "typmod_in") == 0)
300 8 : defelp = &typmodinNameEl;
301 232 : else if (strcmp(defel->defname, "typmod_out") == 0)
302 8 : defelp = &typmodoutNameEl;
303 224 : else if (strcmp(defel->defname, "analyze") == 0 ||
304 224 : strcmp(defel->defname, "analyse") == 0)
305 0 : defelp = &analyzeNameEl;
306 224 : else if (strcmp(defel->defname, "subscript") == 0)
307 2 : defelp = &subscriptNameEl;
308 222 : else if (strcmp(defel->defname, "category") == 0)
309 12 : defelp = &categoryEl;
310 210 : else if (strcmp(defel->defname, "preferred") == 0)
311 12 : defelp = &preferredEl;
312 198 : else if (strcmp(defel->defname, "delimiter") == 0)
313 0 : defelp = &delimiterEl;
314 198 : else if (strcmp(defel->defname, "element") == 0)
315 14 : defelp = &elemTypeEl;
316 184 : else if (strcmp(defel->defname, "default") == 0)
317 18 : defelp = &defaultValueEl;
318 166 : else if (strcmp(defel->defname, "passedbyvalue") == 0)
319 14 : defelp = &byValueEl;
320 152 : else if (strcmp(defel->defname, "alignment") == 0)
321 56 : defelp = &alignmentEl;
322 96 : else if (strcmp(defel->defname, "storage") == 0)
323 56 : defelp = &storageEl;
324 40 : else if (strcmp(defel->defname, "collatable") == 0)
325 4 : defelp = &collatableEl;
326 : else
327 : {
328 : /* WARNING, not ERROR, for historical backwards-compatibility */
329 36 : ereport(WARNING,
330 : (errcode(ERRCODE_SYNTAX_ERROR),
331 : errmsg("type attribute \"%s\" not recognized",
332 : defel->defname),
333 : parser_errposition(pstate, defel->location)));
334 36 : continue;
335 : }
336 836 : if (*defelp != NULL)
337 0 : errorConflictingDefElem(defel, pstate);
338 836 : *defelp = defel;
339 : }
340 :
341 : /*
342 : * Now interpret the options; we do this separately so that LIKE can be
343 : * overridden by other options regardless of the ordering in the parameter
344 : * list.
345 : */
346 210 : if (likeTypeEl)
347 : {
348 : Type likeType;
349 : Form_pg_type likeForm;
350 :
351 56 : likeType = typenameType(pstate, defGetTypeName(likeTypeEl), NULL);
352 50 : likeForm = (Form_pg_type) GETSTRUCT(likeType);
353 50 : internalLength = likeForm->typlen;
354 50 : byValue = likeForm->typbyval;
355 50 : alignment = likeForm->typalign;
356 50 : storage = likeForm->typstorage;
357 50 : ReleaseSysCache(likeType);
358 : }
359 204 : if (internalLengthEl)
360 132 : internalLength = defGetTypeLength(internalLengthEl);
361 204 : if (inputNameEl)
362 198 : inputName = defGetQualifiedName(inputNameEl);
363 204 : if (outputNameEl)
364 198 : outputName = defGetQualifiedName(outputNameEl);
365 204 : if (receiveNameEl)
366 18 : receiveName = defGetQualifiedName(receiveNameEl);
367 204 : if (sendNameEl)
368 18 : sendName = defGetQualifiedName(sendNameEl);
369 204 : if (typmodinNameEl)
370 8 : typmodinName = defGetQualifiedName(typmodinNameEl);
371 204 : if (typmodoutNameEl)
372 8 : typmodoutName = defGetQualifiedName(typmodoutNameEl);
373 204 : if (analyzeNameEl)
374 0 : analyzeName = defGetQualifiedName(analyzeNameEl);
375 204 : if (subscriptNameEl)
376 2 : subscriptName = defGetQualifiedName(subscriptNameEl);
377 204 : if (categoryEl)
378 : {
379 12 : char *p = defGetString(categoryEl);
380 :
381 12 : category = p[0];
382 : /* restrict to non-control ASCII */
383 12 : if (category < 32 || category > 126)
384 0 : ereport(ERROR,
385 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
386 : errmsg("invalid type category \"%s\": must be simple ASCII",
387 : p)));
388 : }
389 204 : if (preferredEl)
390 12 : preferred = defGetBoolean(preferredEl);
391 204 : if (delimiterEl)
392 : {
393 0 : char *p = defGetString(delimiterEl);
394 :
395 0 : delimiter = p[0];
396 : /* XXX shouldn't we restrict the delimiter? */
397 : }
398 204 : if (elemTypeEl)
399 : {
400 14 : elemType = typenameTypeId(NULL, defGetTypeName(elemTypeEl));
401 : /* disallow arrays of pseudotypes */
402 14 : if (get_typtype(elemType) == TYPTYPE_PSEUDO)
403 0 : ereport(ERROR,
404 : (errcode(ERRCODE_DATATYPE_MISMATCH),
405 : errmsg("array element type cannot be %s",
406 : format_type_be(elemType))));
407 : }
408 204 : if (defaultValueEl)
409 18 : defaultValue = defGetString(defaultValueEl);
410 204 : if (byValueEl)
411 14 : byValue = defGetBoolean(byValueEl);
412 204 : if (alignmentEl)
413 : {
414 56 : char *a = defGetString(alignmentEl);
415 :
416 : /*
417 : * Note: if argument was an unquoted identifier, parser will have
418 : * applied translations to it, so be prepared to recognize translated
419 : * type names as well as the nominal form.
420 : */
421 94 : if (pg_strcasecmp(a, "double") == 0 ||
422 76 : pg_strcasecmp(a, "float8") == 0 ||
423 38 : pg_strcasecmp(a, "pg_catalog.float8") == 0)
424 18 : alignment = TYPALIGN_DOUBLE;
425 44 : else if (pg_strcasecmp(a, "int4") == 0 ||
426 6 : pg_strcasecmp(a, "pg_catalog.int4") == 0)
427 38 : alignment = TYPALIGN_INT;
428 0 : else if (pg_strcasecmp(a, "int2") == 0 ||
429 0 : pg_strcasecmp(a, "pg_catalog.int2") == 0)
430 0 : alignment = TYPALIGN_SHORT;
431 0 : else if (pg_strcasecmp(a, "char") == 0 ||
432 0 : pg_strcasecmp(a, "pg_catalog.bpchar") == 0)
433 0 : alignment = TYPALIGN_CHAR;
434 : else
435 0 : ereport(ERROR,
436 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
437 : errmsg("alignment \"%s\" not recognized", a)));
438 : }
439 204 : if (storageEl)
440 : {
441 56 : char *a = defGetString(storageEl);
442 :
443 56 : if (pg_strcasecmp(a, "plain") == 0)
444 18 : storage = TYPSTORAGE_PLAIN;
445 38 : else if (pg_strcasecmp(a, "external") == 0)
446 0 : storage = TYPSTORAGE_EXTERNAL;
447 38 : else if (pg_strcasecmp(a, "extended") == 0)
448 32 : storage = TYPSTORAGE_EXTENDED;
449 6 : else if (pg_strcasecmp(a, "main") == 0)
450 6 : storage = TYPSTORAGE_MAIN;
451 : else
452 0 : ereport(ERROR,
453 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
454 : errmsg("storage \"%s\" not recognized", a)));
455 : }
456 204 : if (collatableEl)
457 4 : collation = defGetBoolean(collatableEl) ? DEFAULT_COLLATION_OID : InvalidOid;
458 :
459 : /*
460 : * make sure we have our required definitions
461 : */
462 204 : if (inputName == NIL)
463 6 : ereport(ERROR,
464 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
465 : errmsg("type input function must be specified")));
466 198 : if (outputName == NIL)
467 0 : ereport(ERROR,
468 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
469 : errmsg("type output function must be specified")));
470 :
471 198 : if (typmodinName == NIL && typmodoutName != NIL)
472 0 : ereport(ERROR,
473 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
474 : errmsg("type modifier output function is useless without a type modifier input function")));
475 :
476 : /*
477 : * Convert I/O proc names to OIDs
478 : */
479 198 : inputOid = findTypeInputFunction(inputName, typoid);
480 192 : outputOid = findTypeOutputFunction(outputName, typoid);
481 192 : if (receiveName)
482 18 : receiveOid = findTypeReceiveFunction(receiveName, typoid);
483 192 : if (sendName)
484 18 : sendOid = findTypeSendFunction(sendName, typoid);
485 :
486 : /*
487 : * Convert typmodin/out function proc names to OIDs.
488 : */
489 192 : if (typmodinName)
490 8 : typmodinOid = findTypeTypmodinFunction(typmodinName);
491 192 : if (typmodoutName)
492 8 : typmodoutOid = findTypeTypmodoutFunction(typmodoutName);
493 :
494 : /*
495 : * Convert analysis function proc name to an OID. If no analysis function
496 : * is specified, we'll use zero to select the built-in default algorithm.
497 : */
498 192 : if (analyzeName)
499 0 : analyzeOid = findTypeAnalyzeFunction(analyzeName, typoid);
500 :
501 : /*
502 : * Likewise look up the subscripting function if any. If it is not
503 : * specified, but a typelem is specified, allow that if
504 : * raw_array_subscript_handler can be used. (This is for backwards
505 : * compatibility; maybe someday we should throw an error instead.)
506 : */
507 192 : if (subscriptName)
508 2 : subscriptOid = findTypeSubscriptingFunction(subscriptName, typoid);
509 190 : else if (OidIsValid(elemType))
510 : {
511 6 : if (internalLength > 0 && !byValue && get_typlen(elemType) > 0)
512 6 : subscriptOid = F_RAW_ARRAY_SUBSCRIPT_HANDLER;
513 : else
514 0 : ereport(ERROR,
515 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
516 : errmsg("element type cannot be specified without a subscripting function")));
517 : }
518 :
519 : /*
520 : * Check permissions on functions. We choose to require the creator/owner
521 : * of a type to also own the underlying functions. Since creating a type
522 : * is tantamount to granting public execute access on the functions, the
523 : * minimum sane check would be for execute-with-grant-option. But we
524 : * don't have a way to make the type go away if the grant option is
525 : * revoked, so ownership seems better.
526 : *
527 : * XXX For now, this is all unnecessary given the superuser check above.
528 : * If we ever relax that, these calls likely should be moved into
529 : * findTypeInputFunction et al, where they could be shared by AlterType.
530 : */
531 : #ifdef NOT_USED
532 : if (inputOid && !object_ownercheck(ProcedureRelationId, inputOid, GetUserId()))
533 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
534 : NameListToString(inputName));
535 : if (outputOid && !object_ownercheck(ProcedureRelationId, outputOid, GetUserId()))
536 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
537 : NameListToString(outputName));
538 : if (receiveOid && !object_ownercheck(ProcedureRelationId, receiveOid, GetUserId()))
539 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
540 : NameListToString(receiveName));
541 : if (sendOid && !object_ownercheck(ProcedureRelationId, sendOid, GetUserId()))
542 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
543 : NameListToString(sendName));
544 : if (typmodinOid && !object_ownercheck(ProcedureRelationId, typmodinOid, GetUserId()))
545 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
546 : NameListToString(typmodinName));
547 : if (typmodoutOid && !object_ownercheck(ProcedureRelationId, typmodoutOid, GetUserId()))
548 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
549 : NameListToString(typmodoutName));
550 : if (analyzeOid && !object_ownercheck(ProcedureRelationId, analyzeOid, GetUserId()))
551 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
552 : NameListToString(analyzeName));
553 : if (subscriptOid && !object_ownercheck(ProcedureRelationId, subscriptOid, GetUserId()))
554 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
555 : NameListToString(subscriptName));
556 : #endif
557 :
558 : /*
559 : * OK, we're done checking, time to make the type. We must assign the
560 : * array type OID ahead of calling TypeCreate, since the base type and
561 : * array type each refer to the other.
562 : */
563 192 : array_oid = AssignTypeArrayOid();
564 :
565 : /*
566 : * now have TypeCreate do all the real work.
567 : *
568 : * Note: the pg_type.oid is stored in user tables as array elements (base
569 : * types) in ArrayType and in composite types in DatumTupleFields. This
570 : * oid must be preserved by binary upgrades.
571 : */
572 : address =
573 192 : TypeCreate(InvalidOid, /* no predetermined type OID */
574 : typeName, /* type name */
575 : typeNamespace, /* namespace */
576 : InvalidOid, /* relation oid (n/a here) */
577 : 0, /* relation kind (ditto) */
578 : GetUserId(), /* owner's ID */
579 : internalLength, /* internal size */
580 : TYPTYPE_BASE, /* type-type (base type) */
581 : category, /* type-category */
582 : preferred, /* is it a preferred type? */
583 : delimiter, /* array element delimiter */
584 : inputOid, /* input procedure */
585 : outputOid, /* output procedure */
586 : receiveOid, /* receive procedure */
587 : sendOid, /* send procedure */
588 : typmodinOid, /* typmodin procedure */
589 : typmodoutOid, /* typmodout procedure */
590 : analyzeOid, /* analyze procedure */
591 : subscriptOid, /* subscript procedure */
592 : elemType, /* element type ID */
593 : false, /* this is not an implicit array type */
594 : array_oid, /* array type we are about to create */
595 : InvalidOid, /* base type ID (only for domains) */
596 : defaultValue, /* default type value */
597 : NULL, /* no binary form available */
598 : byValue, /* passed by value */
599 : alignment, /* required alignment */
600 : storage, /* TOAST strategy */
601 : -1, /* typMod (Domains only) */
602 : 0, /* Array Dimensions of typbasetype */
603 : false, /* Type NOT NULL */
604 : collation); /* type's collation */
605 : Assert(typoid == address.objectId);
606 :
607 : /*
608 : * Create the array type that goes with it.
609 : */
610 192 : array_type = makeArrayTypeName(typeName, typeNamespace);
611 :
612 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for arrays */
613 192 : alignment = (alignment == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
614 :
615 192 : TypeCreate(array_oid, /* force assignment of this type OID */
616 : array_type, /* type name */
617 : typeNamespace, /* namespace */
618 : InvalidOid, /* relation oid (n/a here) */
619 : 0, /* relation kind (ditto) */
620 : GetUserId(), /* owner's ID */
621 : -1, /* internal size (always varlena) */
622 : TYPTYPE_BASE, /* type-type (base type) */
623 : TYPCATEGORY_ARRAY, /* type-category (array) */
624 : false, /* array types are never preferred */
625 : delimiter, /* array element delimiter */
626 : F_ARRAY_IN, /* input procedure */
627 : F_ARRAY_OUT, /* output procedure */
628 : F_ARRAY_RECV, /* receive procedure */
629 : F_ARRAY_SEND, /* send procedure */
630 : typmodinOid, /* typmodin procedure */
631 : typmodoutOid, /* typmodout procedure */
632 : F_ARRAY_TYPANALYZE, /* analyze procedure */
633 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
634 : typoid, /* element type ID */
635 : true, /* yes this is an array type */
636 : InvalidOid, /* no further array type */
637 : InvalidOid, /* base type ID */
638 : NULL, /* never a default type value */
639 : NULL, /* binary default isn't sent either */
640 : false, /* never passed by value */
641 : alignment, /* see above */
642 : TYPSTORAGE_EXTENDED, /* ARRAY is always toastable */
643 : -1, /* typMod (Domains only) */
644 : 0, /* Array dimensions of typbasetype */
645 : false, /* Type NOT NULL */
646 : collation); /* type's collation */
647 :
648 192 : pfree(array_type);
649 :
650 192 : return address;
651 : }
652 :
653 : /*
654 : * Guts of type deletion.
655 : */
656 : void
657 75414 : RemoveTypeById(Oid typeOid)
658 : {
659 : Relation relation;
660 : HeapTuple tup;
661 :
662 75414 : relation = table_open(TypeRelationId, RowExclusiveLock);
663 :
664 75414 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typeOid));
665 75414 : if (!HeapTupleIsValid(tup))
666 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
667 :
668 75414 : CatalogTupleDelete(relation, &tup->t_self);
669 :
670 : /*
671 : * If it is an enum, delete the pg_enum entries too; we don't bother with
672 : * making dependency entries for those, so it has to be done "by hand"
673 : * here.
674 : */
675 75414 : if (((Form_pg_type) GETSTRUCT(tup))->typtype == TYPTYPE_ENUM)
676 324 : EnumValuesDelete(typeOid);
677 :
678 : /*
679 : * If it is a range type, delete the pg_range entry too; we don't bother
680 : * with making a dependency entry for that, so it has to be done "by hand"
681 : * here.
682 : */
683 75414 : if (((Form_pg_type) GETSTRUCT(tup))->typtype == TYPTYPE_RANGE)
684 104 : RangeDelete(typeOid);
685 :
686 75414 : ReleaseSysCache(tup);
687 :
688 75414 : table_close(relation, RowExclusiveLock);
689 75414 : }
690 :
691 :
692 : /*
693 : * DefineDomain
694 : * Registers a new domain.
695 : */
696 : ObjectAddress
697 1372 : DefineDomain(ParseState *pstate, CreateDomainStmt *stmt)
698 : {
699 : char *domainName;
700 : char *domainArrayName;
701 : Oid domainNamespace;
702 : AclResult aclresult;
703 : int16 internalLength;
704 : Oid inputProcedure;
705 : Oid outputProcedure;
706 : Oid receiveProcedure;
707 : Oid sendProcedure;
708 : Oid analyzeProcedure;
709 : bool byValue;
710 : char category;
711 : char delimiter;
712 : char alignment;
713 : char storage;
714 : char typtype;
715 : Datum datum;
716 : bool isnull;
717 1372 : char *defaultValue = NULL;
718 1372 : char *defaultValueBin = NULL;
719 1372 : bool saw_default = false;
720 1372 : bool typNotNull = false;
721 1372 : bool nullDefined = false;
722 1372 : int32 typNDims = list_length(stmt->typeName->arrayBounds);
723 : HeapTuple typeTup;
724 1372 : List *schema = stmt->constraints;
725 : ListCell *listptr;
726 : Oid basetypeoid;
727 : Oid old_type_oid;
728 : Oid domaincoll;
729 : Oid domainArrayOid;
730 : Form_pg_type baseType;
731 : int32 basetypeMod;
732 : Oid baseColl;
733 : ObjectAddress address;
734 :
735 : /* Convert list of names to a name and namespace */
736 1372 : domainNamespace = QualifiedNameGetCreationNamespace(stmt->domainname,
737 : &domainName);
738 :
739 : /* Check we have creation rights in target namespace */
740 1372 : aclresult = object_aclcheck(NamespaceRelationId, domainNamespace, GetUserId(),
741 : ACL_CREATE);
742 1372 : if (aclresult != ACLCHECK_OK)
743 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
744 0 : get_namespace_name(domainNamespace));
745 :
746 : /*
747 : * Check for collision with an existing type name. If there is one and
748 : * it's an autogenerated array, we can rename it out of the way.
749 : */
750 1372 : old_type_oid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
751 : CStringGetDatum(domainName),
752 : ObjectIdGetDatum(domainNamespace));
753 1372 : if (OidIsValid(old_type_oid))
754 : {
755 0 : if (!moveArrayTypeName(old_type_oid, domainName, domainNamespace))
756 0 : ereport(ERROR,
757 : (errcode(ERRCODE_DUPLICATE_OBJECT),
758 : errmsg("type \"%s\" already exists", domainName)));
759 : }
760 :
761 : /*
762 : * Look up the base type.
763 : */
764 1372 : typeTup = typenameType(pstate, stmt->typeName, &basetypeMod);
765 1366 : baseType = (Form_pg_type) GETSTRUCT(typeTup);
766 1366 : basetypeoid = baseType->oid;
767 :
768 : /*
769 : * Base type must be a plain base type, a composite type, another domain,
770 : * an enum or a range type. Domains over pseudotypes would create a
771 : * security hole. (It would be shorter to code this to just check for
772 : * pseudotypes; but it seems safer to call out the specific typtypes that
773 : * are supported, rather than assume that all future typtypes would be
774 : * automatically supported.)
775 : */
776 1366 : typtype = baseType->typtype;
777 1366 : if (typtype != TYPTYPE_BASE &&
778 82 : typtype != TYPTYPE_COMPOSITE &&
779 32 : typtype != TYPTYPE_DOMAIN &&
780 18 : typtype != TYPTYPE_ENUM &&
781 12 : typtype != TYPTYPE_RANGE &&
782 : typtype != TYPTYPE_MULTIRANGE)
783 6 : ereport(ERROR,
784 : (errcode(ERRCODE_DATATYPE_MISMATCH),
785 : errmsg("\"%s\" is not a valid base type for a domain",
786 : TypeNameToString(stmt->typeName)),
787 : parser_errposition(pstate, stmt->typeName->location)));
788 :
789 1360 : aclresult = object_aclcheck(TypeRelationId, basetypeoid, GetUserId(), ACL_USAGE);
790 1360 : if (aclresult != ACLCHECK_OK)
791 6 : aclcheck_error_type(aclresult, basetypeoid);
792 :
793 : /*
794 : * Collect the properties of the new domain. Some are inherited from the
795 : * base type, some are not. If you change any of this inheritance
796 : * behavior, be sure to update AlterTypeRecurse() to match!
797 : */
798 :
799 : /*
800 : * Identify the collation if any
801 : */
802 1354 : baseColl = baseType->typcollation;
803 1354 : if (stmt->collClause)
804 210 : domaincoll = get_collation_oid(stmt->collClause->collname, false);
805 : else
806 1144 : domaincoll = baseColl;
807 :
808 : /* Complain if COLLATE is applied to an uncollatable type */
809 1354 : if (OidIsValid(domaincoll) && !OidIsValid(baseColl))
810 18 : ereport(ERROR,
811 : (errcode(ERRCODE_DATATYPE_MISMATCH),
812 : errmsg("collations are not supported by type %s",
813 : format_type_be(basetypeoid)),
814 : parser_errposition(pstate, stmt->typeName->location)));
815 :
816 : /* passed by value */
817 1336 : byValue = baseType->typbyval;
818 :
819 : /* Required Alignment */
820 1336 : alignment = baseType->typalign;
821 :
822 : /* TOAST Strategy */
823 1336 : storage = baseType->typstorage;
824 :
825 : /* Storage Length */
826 1336 : internalLength = baseType->typlen;
827 :
828 : /* Type Category */
829 1336 : category = baseType->typcategory;
830 :
831 : /* Array element Delimiter */
832 1336 : delimiter = baseType->typdelim;
833 :
834 : /* I/O Functions */
835 1336 : inputProcedure = F_DOMAIN_IN;
836 1336 : outputProcedure = baseType->typoutput;
837 1336 : receiveProcedure = F_DOMAIN_RECV;
838 1336 : sendProcedure = baseType->typsend;
839 :
840 : /* Domains never accept typmods, so no typmodin/typmodout needed */
841 :
842 : /* Analysis function */
843 1336 : analyzeProcedure = baseType->typanalyze;
844 :
845 : /*
846 : * Domains don't need a subscript function, since they are not
847 : * subscriptable on their own. If the base type is subscriptable, the
848 : * parser will reduce the type to the base type before subscripting.
849 : */
850 :
851 : /* Inherited default value */
852 1336 : datum = SysCacheGetAttr(TYPEOID, typeTup,
853 : Anum_pg_type_typdefault, &isnull);
854 1336 : if (!isnull)
855 0 : defaultValue = TextDatumGetCString(datum);
856 :
857 : /* Inherited default binary value */
858 1336 : datum = SysCacheGetAttr(TYPEOID, typeTup,
859 : Anum_pg_type_typdefaultbin, &isnull);
860 1336 : if (!isnull)
861 0 : defaultValueBin = TextDatumGetCString(datum);
862 :
863 : /*
864 : * Run through constraints manually to avoid the additional processing
865 : * conducted by DefineRelation() and friends.
866 : */
867 2118 : foreach(listptr, schema)
868 : {
869 854 : Constraint *constr = lfirst(listptr);
870 :
871 854 : if (!IsA(constr, Constraint))
872 0 : elog(ERROR, "unrecognized node type: %d",
873 : (int) nodeTag(constr));
874 854 : switch (constr->contype)
875 : {
876 170 : case CONSTR_DEFAULT:
877 :
878 : /*
879 : * The inherited default value may be overridden by the user
880 : * with the DEFAULT <expr> clause ... but only once.
881 : */
882 170 : if (saw_default)
883 6 : ereport(ERROR,
884 : errcode(ERRCODE_SYNTAX_ERROR),
885 : errmsg("multiple default expressions"),
886 : parser_errposition(pstate, constr->location));
887 164 : saw_default = true;
888 :
889 164 : if (constr->raw_expr)
890 : {
891 : Node *defaultExpr;
892 :
893 : /*
894 : * Cook the constr->raw_expr into an expression. Note:
895 : * name is strictly for error message
896 : */
897 164 : defaultExpr = cookDefault(pstate, constr->raw_expr,
898 : basetypeoid,
899 : basetypeMod,
900 : domainName,
901 : 0);
902 :
903 : /*
904 : * If the expression is just a NULL constant, we treat it
905 : * like not having a default.
906 : *
907 : * Note that if the basetype is another domain, we'll see
908 : * a CoerceToDomain expr here and not discard the default.
909 : * This is critical because the domain default needs to be
910 : * retained to override any default that the base domain
911 : * might have.
912 : */
913 158 : if (defaultExpr == NULL ||
914 158 : (IsA(defaultExpr, Const) &&
915 36 : ((Const *) defaultExpr)->constisnull))
916 : {
917 0 : defaultValue = NULL;
918 0 : defaultValueBin = NULL;
919 : }
920 : else
921 : {
922 : /*
923 : * Expression must be stored as a nodeToString result,
924 : * but we also require a valid textual representation
925 : * (mainly to make life easier for pg_dump).
926 : */
927 : defaultValue =
928 158 : deparse_expression(defaultExpr,
929 : NIL, false, false);
930 158 : defaultValueBin = nodeToString(defaultExpr);
931 : }
932 : }
933 : else
934 : {
935 : /* No default (can this still happen?) */
936 0 : defaultValue = NULL;
937 0 : defaultValueBin = NULL;
938 : }
939 158 : break;
940 :
941 98 : case CONSTR_NOTNULL:
942 98 : if (nullDefined && !typNotNull)
943 0 : ereport(ERROR,
944 : errcode(ERRCODE_SYNTAX_ERROR),
945 : errmsg("conflicting NULL/NOT NULL constraints"),
946 : parser_errposition(pstate, constr->location));
947 98 : if (constr->is_no_inherit)
948 6 : ereport(ERROR,
949 : errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
950 : errmsg("not-null constraints for domains cannot be marked NO INHERIT"),
951 : parser_errposition(pstate, constr->location));
952 92 : typNotNull = true;
953 92 : nullDefined = true;
954 92 : break;
955 :
956 6 : case CONSTR_NULL:
957 6 : if (nullDefined && typNotNull)
958 6 : ereport(ERROR,
959 : errcode(ERRCODE_SYNTAX_ERROR),
960 : errmsg("conflicting NULL/NOT NULL constraints"),
961 : parser_errposition(pstate, constr->location));
962 0 : typNotNull = false;
963 0 : nullDefined = true;
964 0 : break;
965 :
966 538 : case CONSTR_CHECK:
967 :
968 : /*
969 : * Check constraints are handled after domain creation, as
970 : * they require the Oid of the domain; at this point we can
971 : * only check that they're not marked NO INHERIT, because that
972 : * would be bogus.
973 : */
974 538 : if (constr->is_no_inherit)
975 6 : ereport(ERROR,
976 : errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
977 : errmsg("check constraints for domains cannot be marked NO INHERIT"),
978 : parser_errposition(pstate, constr->location));
979 :
980 532 : break;
981 :
982 : /*
983 : * All else are error cases
984 : */
985 6 : case CONSTR_UNIQUE:
986 6 : ereport(ERROR,
987 : errcode(ERRCODE_SYNTAX_ERROR),
988 : errmsg("unique constraints not possible for domains"),
989 : parser_errposition(pstate, constr->location));
990 : break;
991 :
992 6 : case CONSTR_PRIMARY:
993 6 : ereport(ERROR,
994 : (errcode(ERRCODE_SYNTAX_ERROR),
995 : errmsg("primary key constraints not possible for domains"),
996 : parser_errposition(pstate, constr->location)));
997 : break;
998 :
999 0 : case CONSTR_EXCLUSION:
1000 0 : ereport(ERROR,
1001 : (errcode(ERRCODE_SYNTAX_ERROR),
1002 : errmsg("exclusion constraints not possible for domains"),
1003 : parser_errposition(pstate, constr->location)));
1004 : break;
1005 :
1006 6 : case CONSTR_FOREIGN:
1007 6 : ereport(ERROR,
1008 : (errcode(ERRCODE_SYNTAX_ERROR),
1009 : errmsg("foreign key constraints not possible for domains"),
1010 : parser_errposition(pstate, constr->location)));
1011 : break;
1012 :
1013 6 : case CONSTR_ATTR_DEFERRABLE:
1014 : case CONSTR_ATTR_NOT_DEFERRABLE:
1015 : case CONSTR_ATTR_DEFERRED:
1016 : case CONSTR_ATTR_IMMEDIATE:
1017 6 : ereport(ERROR,
1018 : (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1019 : errmsg("specifying constraint deferrability not supported for domains"),
1020 : parser_errposition(pstate, constr->location)));
1021 : break;
1022 :
1023 6 : case CONSTR_GENERATED:
1024 : case CONSTR_IDENTITY:
1025 6 : ereport(ERROR,
1026 : (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1027 : errmsg("specifying GENERATED not supported for domains"),
1028 : parser_errposition(pstate, constr->location)));
1029 : break;
1030 :
1031 12 : case CONSTR_ATTR_ENFORCED:
1032 : case CONSTR_ATTR_NOT_ENFORCED:
1033 12 : ereport(ERROR,
1034 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1035 : errmsg("specifying constraint enforceability not supported for domains"),
1036 : parser_errposition(pstate, constr->location)));
1037 : break;
1038 :
1039 : /* no default, to let compiler warn about missing case */
1040 : }
1041 782 : }
1042 :
1043 : /* Allocate OID for array type */
1044 1264 : domainArrayOid = AssignTypeArrayOid();
1045 :
1046 : /*
1047 : * Have TypeCreate do all the real work.
1048 : */
1049 : address =
1050 1264 : TypeCreate(InvalidOid, /* no predetermined type OID */
1051 : domainName, /* type name */
1052 : domainNamespace, /* namespace */
1053 : InvalidOid, /* relation oid (n/a here) */
1054 : 0, /* relation kind (ditto) */
1055 : GetUserId(), /* owner's ID */
1056 : internalLength, /* internal size */
1057 : TYPTYPE_DOMAIN, /* type-type (domain type) */
1058 : category, /* type-category */
1059 : false, /* domain types are never preferred */
1060 : delimiter, /* array element delimiter */
1061 : inputProcedure, /* input procedure */
1062 : outputProcedure, /* output procedure */
1063 : receiveProcedure, /* receive procedure */
1064 : sendProcedure, /* send procedure */
1065 : InvalidOid, /* typmodin procedure - none */
1066 : InvalidOid, /* typmodout procedure - none */
1067 : analyzeProcedure, /* analyze procedure */
1068 : InvalidOid, /* subscript procedure - none */
1069 : InvalidOid, /* no array element type */
1070 : false, /* this isn't an array */
1071 : domainArrayOid, /* array type we are about to create */
1072 : basetypeoid, /* base type ID */
1073 : defaultValue, /* default type value (text) */
1074 : defaultValueBin, /* default type value (binary) */
1075 : byValue, /* passed by value */
1076 : alignment, /* required alignment */
1077 : storage, /* TOAST strategy */
1078 : basetypeMod, /* typeMod value */
1079 : typNDims, /* Array dimensions for base type */
1080 : typNotNull, /* Type NOT NULL */
1081 : domaincoll); /* type's collation */
1082 :
1083 : /*
1084 : * Create the array type that goes with it.
1085 : */
1086 1264 : domainArrayName = makeArrayTypeName(domainName, domainNamespace);
1087 :
1088 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for arrays */
1089 1264 : alignment = (alignment == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
1090 :
1091 1264 : TypeCreate(domainArrayOid, /* force assignment of this type OID */
1092 : domainArrayName, /* type name */
1093 : domainNamespace, /* namespace */
1094 : InvalidOid, /* relation oid (n/a here) */
1095 : 0, /* relation kind (ditto) */
1096 : GetUserId(), /* owner's ID */
1097 : -1, /* internal size (always varlena) */
1098 : TYPTYPE_BASE, /* type-type (base type) */
1099 : TYPCATEGORY_ARRAY, /* type-category (array) */
1100 : false, /* array types are never preferred */
1101 : delimiter, /* array element delimiter */
1102 : F_ARRAY_IN, /* input procedure */
1103 : F_ARRAY_OUT, /* output procedure */
1104 : F_ARRAY_RECV, /* receive procedure */
1105 : F_ARRAY_SEND, /* send procedure */
1106 : InvalidOid, /* typmodin procedure - none */
1107 : InvalidOid, /* typmodout procedure - none */
1108 : F_ARRAY_TYPANALYZE, /* analyze procedure */
1109 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
1110 : address.objectId, /* element type ID */
1111 : true, /* yes this is an array type */
1112 : InvalidOid, /* no further array type */
1113 : InvalidOid, /* base type ID */
1114 : NULL, /* never a default type value */
1115 : NULL, /* binary default isn't sent either */
1116 : false, /* never passed by value */
1117 : alignment, /* see above */
1118 : TYPSTORAGE_EXTENDED, /* ARRAY is always toastable */
1119 : -1, /* typMod (Domains only) */
1120 : 0, /* Array dimensions of typbasetype */
1121 : false, /* Type NOT NULL */
1122 : domaincoll); /* type's collation */
1123 :
1124 1264 : pfree(domainArrayName);
1125 :
1126 : /*
1127 : * Process constraints which refer to the domain ID returned by TypeCreate
1128 : */
1129 2010 : foreach(listptr, schema)
1130 : {
1131 746 : Constraint *constr = lfirst(listptr);
1132 :
1133 : /* it must be a Constraint, per check above */
1134 :
1135 746 : switch (constr->contype)
1136 : {
1137 514 : case CONSTR_CHECK:
1138 514 : domainAddCheckConstraint(address.objectId, domainNamespace,
1139 : basetypeoid, basetypeMod,
1140 : constr, domainName, NULL);
1141 514 : break;
1142 :
1143 80 : case CONSTR_NOTNULL:
1144 80 : domainAddNotNullConstraint(address.objectId, domainNamespace,
1145 : basetypeoid, basetypeMod,
1146 : constr, domainName, NULL);
1147 80 : break;
1148 :
1149 : /* Other constraint types were fully processed above */
1150 :
1151 152 : default:
1152 152 : break;
1153 : }
1154 :
1155 : /* CCI so we can detect duplicate constraint names */
1156 746 : CommandCounterIncrement();
1157 : }
1158 :
1159 : /*
1160 : * Now we can clean up.
1161 : */
1162 1264 : ReleaseSysCache(typeTup);
1163 :
1164 1264 : return address;
1165 : }
1166 :
1167 :
1168 : /*
1169 : * DefineEnum
1170 : * Registers a new enum.
1171 : */
1172 : ObjectAddress
1173 436 : DefineEnum(CreateEnumStmt *stmt)
1174 : {
1175 : char *enumName;
1176 : char *enumArrayName;
1177 : Oid enumNamespace;
1178 : AclResult aclresult;
1179 : Oid old_type_oid;
1180 : Oid enumArrayOid;
1181 : ObjectAddress enumTypeAddr;
1182 :
1183 : /* Convert list of names to a name and namespace */
1184 436 : enumNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
1185 : &enumName);
1186 :
1187 : /* Check we have creation rights in target namespace */
1188 436 : aclresult = object_aclcheck(NamespaceRelationId, enumNamespace, GetUserId(), ACL_CREATE);
1189 436 : if (aclresult != ACLCHECK_OK)
1190 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
1191 0 : get_namespace_name(enumNamespace));
1192 :
1193 : /*
1194 : * Check for collision with an existing type name. If there is one and
1195 : * it's an autogenerated array, we can rename it out of the way.
1196 : */
1197 436 : old_type_oid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
1198 : CStringGetDatum(enumName),
1199 : ObjectIdGetDatum(enumNamespace));
1200 436 : if (OidIsValid(old_type_oid))
1201 : {
1202 8 : if (!moveArrayTypeName(old_type_oid, enumName, enumNamespace))
1203 0 : ereport(ERROR,
1204 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1205 : errmsg("type \"%s\" already exists", enumName)));
1206 : }
1207 :
1208 : /* Allocate OID for array type */
1209 436 : enumArrayOid = AssignTypeArrayOid();
1210 :
1211 : /* Create the pg_type entry */
1212 : enumTypeAddr =
1213 436 : TypeCreate(InvalidOid, /* no predetermined type OID */
1214 : enumName, /* type name */
1215 : enumNamespace, /* namespace */
1216 : InvalidOid, /* relation oid (n/a here) */
1217 : 0, /* relation kind (ditto) */
1218 : GetUserId(), /* owner's ID */
1219 : sizeof(Oid), /* internal size */
1220 : TYPTYPE_ENUM, /* type-type (enum type) */
1221 : TYPCATEGORY_ENUM, /* type-category (enum type) */
1222 : false, /* enum types are never preferred */
1223 : DEFAULT_TYPDELIM, /* array element delimiter */
1224 : F_ENUM_IN, /* input procedure */
1225 : F_ENUM_OUT, /* output procedure */
1226 : F_ENUM_RECV, /* receive procedure */
1227 : F_ENUM_SEND, /* send procedure */
1228 : InvalidOid, /* typmodin procedure - none */
1229 : InvalidOid, /* typmodout procedure - none */
1230 : InvalidOid, /* analyze procedure - default */
1231 : InvalidOid, /* subscript procedure - none */
1232 : InvalidOid, /* element type ID */
1233 : false, /* this is not an array type */
1234 : enumArrayOid, /* array type we are about to create */
1235 : InvalidOid, /* base type ID (only for domains) */
1236 : NULL, /* never a default type value */
1237 : NULL, /* binary default isn't sent either */
1238 : true, /* always passed by value */
1239 : TYPALIGN_INT, /* int alignment */
1240 : TYPSTORAGE_PLAIN, /* TOAST strategy always plain */
1241 : -1, /* typMod (Domains only) */
1242 : 0, /* Array dimensions of typbasetype */
1243 : false, /* Type NOT NULL */
1244 : InvalidOid); /* type's collation */
1245 :
1246 : /* Enter the enum's values into pg_enum */
1247 434 : EnumValuesCreate(enumTypeAddr.objectId, stmt->vals);
1248 :
1249 : /*
1250 : * Create the array type that goes with it.
1251 : */
1252 434 : enumArrayName = makeArrayTypeName(enumName, enumNamespace);
1253 :
1254 434 : TypeCreate(enumArrayOid, /* force assignment of this type OID */
1255 : enumArrayName, /* type name */
1256 : enumNamespace, /* namespace */
1257 : InvalidOid, /* relation oid (n/a here) */
1258 : 0, /* relation kind (ditto) */
1259 : GetUserId(), /* owner's ID */
1260 : -1, /* internal size (always varlena) */
1261 : TYPTYPE_BASE, /* type-type (base type) */
1262 : TYPCATEGORY_ARRAY, /* type-category (array) */
1263 : false, /* array types are never preferred */
1264 : DEFAULT_TYPDELIM, /* array element delimiter */
1265 : F_ARRAY_IN, /* input procedure */
1266 : F_ARRAY_OUT, /* output procedure */
1267 : F_ARRAY_RECV, /* receive procedure */
1268 : F_ARRAY_SEND, /* send procedure */
1269 : InvalidOid, /* typmodin procedure - none */
1270 : InvalidOid, /* typmodout procedure - none */
1271 : F_ARRAY_TYPANALYZE, /* analyze procedure */
1272 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
1273 : enumTypeAddr.objectId, /* element type ID */
1274 : true, /* yes this is an array type */
1275 : InvalidOid, /* no further array type */
1276 : InvalidOid, /* base type ID */
1277 : NULL, /* never a default type value */
1278 : NULL, /* binary default isn't sent either */
1279 : false, /* never passed by value */
1280 : TYPALIGN_INT, /* enums have int align, so do their arrays */
1281 : TYPSTORAGE_EXTENDED, /* ARRAY is always toastable */
1282 : -1, /* typMod (Domains only) */
1283 : 0, /* Array dimensions of typbasetype */
1284 : false, /* Type NOT NULL */
1285 : InvalidOid); /* type's collation */
1286 :
1287 434 : pfree(enumArrayName);
1288 :
1289 434 : return enumTypeAddr;
1290 : }
1291 :
1292 : /*
1293 : * AlterEnum
1294 : * Adds a new label to an existing enum.
1295 : */
1296 : ObjectAddress
1297 394 : AlterEnum(AlterEnumStmt *stmt)
1298 : {
1299 : Oid enum_type_oid;
1300 : TypeName *typename;
1301 : HeapTuple tup;
1302 : ObjectAddress address;
1303 :
1304 : /* Make a TypeName so we can use standard type lookup machinery */
1305 394 : typename = makeTypeNameFromNameList(stmt->typeName);
1306 394 : enum_type_oid = typenameTypeId(NULL, typename);
1307 :
1308 394 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(enum_type_oid));
1309 394 : if (!HeapTupleIsValid(tup))
1310 0 : elog(ERROR, "cache lookup failed for type %u", enum_type_oid);
1311 :
1312 : /* Check it's an enum and check user has permission to ALTER the enum */
1313 394 : checkEnumOwner(tup);
1314 :
1315 394 : ReleaseSysCache(tup);
1316 :
1317 394 : if (stmt->oldVal)
1318 : {
1319 : /* Rename an existing label */
1320 24 : RenameEnumLabel(enum_type_oid, stmt->oldVal, stmt->newVal);
1321 : }
1322 : else
1323 : {
1324 : /* Add a new label */
1325 370 : AddEnumLabel(enum_type_oid, stmt->newVal,
1326 370 : stmt->newValNeighbor, stmt->newValIsAfter,
1327 370 : stmt->skipIfNewValExists);
1328 : }
1329 :
1330 364 : InvokeObjectPostAlterHook(TypeRelationId, enum_type_oid, 0);
1331 :
1332 364 : ObjectAddressSet(address, TypeRelationId, enum_type_oid);
1333 :
1334 364 : return address;
1335 : }
1336 :
1337 :
1338 : /*
1339 : * checkEnumOwner
1340 : *
1341 : * Check that the type is actually an enum and that the current user
1342 : * has permission to do ALTER TYPE on it. Throw an error if not.
1343 : */
1344 : static void
1345 394 : checkEnumOwner(HeapTuple tup)
1346 : {
1347 394 : Form_pg_type typTup = (Form_pg_type) GETSTRUCT(tup);
1348 :
1349 : /* Check that this is actually an enum */
1350 394 : if (typTup->typtype != TYPTYPE_ENUM)
1351 0 : ereport(ERROR,
1352 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1353 : errmsg("%s is not an enum",
1354 : format_type_be(typTup->oid))));
1355 :
1356 : /* Permission check: must own type */
1357 394 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
1358 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
1359 394 : }
1360 :
1361 :
1362 : /*
1363 : * DefineRange
1364 : * Registers a new range type.
1365 : *
1366 : * Perhaps it might be worthwhile to set pg_type.typelem to the base type,
1367 : * and likewise on multiranges to set it to the range type. But having a
1368 : * non-zero typelem is treated elsewhere as a synonym for being an array,
1369 : * and users might have queries with that same assumption.
1370 : */
1371 : ObjectAddress
1372 184 : DefineRange(ParseState *pstate, CreateRangeStmt *stmt)
1373 : {
1374 : char *typeName;
1375 : Oid typeNamespace;
1376 : Oid typoid;
1377 : char *rangeArrayName;
1378 184 : char *multirangeTypeName = NULL;
1379 : char *multirangeArrayName;
1380 184 : Oid multirangeNamespace = InvalidOid;
1381 : Oid rangeArrayOid;
1382 : Oid multirangeOid;
1383 : Oid multirangeArrayOid;
1384 184 : Oid rangeSubtype = InvalidOid;
1385 184 : List *rangeSubOpclassName = NIL;
1386 184 : List *rangeCollationName = NIL;
1387 184 : List *rangeCanonicalName = NIL;
1388 184 : List *rangeSubtypeDiffName = NIL;
1389 : Oid rangeSubOpclass;
1390 : Oid rangeCollation;
1391 : regproc rangeCanonical;
1392 : regproc rangeSubtypeDiff;
1393 : int16 subtyplen;
1394 : bool subtypbyval;
1395 : char subtypalign;
1396 : char alignment;
1397 : AclResult aclresult;
1398 : ListCell *lc;
1399 : ObjectAddress address;
1400 : ObjectAddress mltrngaddress PG_USED_FOR_ASSERTS_ONLY;
1401 : Oid castFuncOid;
1402 :
1403 : /* Convert list of names to a name and namespace */
1404 184 : typeNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
1405 : &typeName);
1406 :
1407 : /* Check we have creation rights in target namespace */
1408 184 : aclresult = object_aclcheck(NamespaceRelationId, typeNamespace, GetUserId(), ACL_CREATE);
1409 184 : if (aclresult != ACLCHECK_OK)
1410 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
1411 0 : get_namespace_name(typeNamespace));
1412 :
1413 : /*
1414 : * Look to see if type already exists.
1415 : */
1416 184 : typoid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
1417 : CStringGetDatum(typeName),
1418 : ObjectIdGetDatum(typeNamespace));
1419 :
1420 : /*
1421 : * If it's not a shell, see if it's an autogenerated array type, and if so
1422 : * rename it out of the way.
1423 : */
1424 184 : if (OidIsValid(typoid) && get_typisdefined(typoid))
1425 : {
1426 0 : if (moveArrayTypeName(typoid, typeName, typeNamespace))
1427 0 : typoid = InvalidOid;
1428 : else
1429 0 : ereport(ERROR,
1430 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1431 : errmsg("type \"%s\" already exists", typeName)));
1432 : }
1433 :
1434 : /*
1435 : * Unlike DefineType(), we don't insist on a shell type existing first, as
1436 : * it's only needed if the user wants to specify a canonical function.
1437 : */
1438 :
1439 : /* Extract the parameters from the parameter list */
1440 496 : foreach(lc, stmt->params)
1441 : {
1442 312 : DefElem *defel = (DefElem *) lfirst(lc);
1443 :
1444 312 : if (strcmp(defel->defname, "subtype") == 0)
1445 : {
1446 184 : if (OidIsValid(rangeSubtype))
1447 0 : errorConflictingDefElem(defel, pstate);
1448 : /* we can look up the subtype name immediately */
1449 184 : rangeSubtype = typenameTypeId(NULL, defGetTypeName(defel));
1450 : }
1451 128 : else if (strcmp(defel->defname, "subtype_opclass") == 0)
1452 : {
1453 8 : if (rangeSubOpclassName != NIL)
1454 0 : errorConflictingDefElem(defel, pstate);
1455 8 : rangeSubOpclassName = defGetQualifiedName(defel);
1456 : }
1457 120 : else if (strcmp(defel->defname, "collation") == 0)
1458 : {
1459 70 : if (rangeCollationName != NIL)
1460 0 : errorConflictingDefElem(defel, pstate);
1461 70 : rangeCollationName = defGetQualifiedName(defel);
1462 : }
1463 50 : else if (strcmp(defel->defname, "canonical") == 0)
1464 : {
1465 0 : if (rangeCanonicalName != NIL)
1466 0 : errorConflictingDefElem(defel, pstate);
1467 0 : rangeCanonicalName = defGetQualifiedName(defel);
1468 : }
1469 50 : else if (strcmp(defel->defname, "subtype_diff") == 0)
1470 : {
1471 14 : if (rangeSubtypeDiffName != NIL)
1472 0 : errorConflictingDefElem(defel, pstate);
1473 14 : rangeSubtypeDiffName = defGetQualifiedName(defel);
1474 : }
1475 36 : else if (strcmp(defel->defname, "multirange_type_name") == 0)
1476 : {
1477 36 : if (multirangeTypeName != NULL)
1478 0 : errorConflictingDefElem(defel, pstate);
1479 : /* we can look up the subtype name immediately */
1480 36 : multirangeNamespace = QualifiedNameGetCreationNamespace(defGetQualifiedName(defel),
1481 : &multirangeTypeName);
1482 : }
1483 : else
1484 0 : ereport(ERROR,
1485 : (errcode(ERRCODE_SYNTAX_ERROR),
1486 : errmsg("type attribute \"%s\" not recognized",
1487 : defel->defname)));
1488 : }
1489 :
1490 : /* Must have a subtype */
1491 184 : if (!OidIsValid(rangeSubtype))
1492 0 : ereport(ERROR,
1493 : (errcode(ERRCODE_SYNTAX_ERROR),
1494 : errmsg("type attribute \"subtype\" is required")));
1495 : /* disallow ranges of pseudotypes */
1496 184 : if (get_typtype(rangeSubtype) == TYPTYPE_PSEUDO)
1497 0 : ereport(ERROR,
1498 : (errcode(ERRCODE_DATATYPE_MISMATCH),
1499 : errmsg("range subtype cannot be %s",
1500 : format_type_be(rangeSubtype))));
1501 :
1502 : /* Identify subopclass */
1503 184 : rangeSubOpclass = findRangeSubOpclass(rangeSubOpclassName, rangeSubtype);
1504 :
1505 : /* Identify collation to use, if any */
1506 184 : if (type_is_collatable(rangeSubtype))
1507 : {
1508 78 : if (rangeCollationName != NIL)
1509 70 : rangeCollation = get_collation_oid(rangeCollationName, false);
1510 : else
1511 8 : rangeCollation = get_typcollation(rangeSubtype);
1512 : }
1513 : else
1514 : {
1515 106 : if (rangeCollationName != NIL)
1516 0 : ereport(ERROR,
1517 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1518 : errmsg("range collation specified but subtype does not support collation")));
1519 106 : rangeCollation = InvalidOid;
1520 : }
1521 :
1522 : /* Identify support functions, if provided */
1523 184 : if (rangeCanonicalName != NIL)
1524 : {
1525 0 : if (!OidIsValid(typoid))
1526 0 : ereport(ERROR,
1527 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1528 : errmsg("cannot specify a canonical function without a pre-created shell type"),
1529 : errhint("Create the type as a shell type, then create its canonicalization function, then do a full CREATE TYPE.")));
1530 0 : rangeCanonical = findRangeCanonicalFunction(rangeCanonicalName,
1531 : typoid);
1532 : }
1533 : else
1534 184 : rangeCanonical = InvalidOid;
1535 :
1536 184 : if (rangeSubtypeDiffName != NIL)
1537 14 : rangeSubtypeDiff = findRangeSubtypeDiffFunction(rangeSubtypeDiffName,
1538 : rangeSubtype);
1539 : else
1540 170 : rangeSubtypeDiff = InvalidOid;
1541 :
1542 178 : get_typlenbyvalalign(rangeSubtype,
1543 : &subtyplen, &subtypbyval, &subtypalign);
1544 :
1545 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for ranges */
1546 178 : alignment = (subtypalign == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
1547 :
1548 : /* Allocate OID for array type, its multirange, and its multirange array */
1549 178 : rangeArrayOid = AssignTypeArrayOid();
1550 178 : multirangeOid = AssignTypeMultirangeOid();
1551 178 : multirangeArrayOid = AssignTypeMultirangeArrayOid();
1552 :
1553 : /* Create the pg_type entry */
1554 : address =
1555 178 : TypeCreate(InvalidOid, /* no predetermined type OID */
1556 : typeName, /* type name */
1557 : typeNamespace, /* namespace */
1558 : InvalidOid, /* relation oid (n/a here) */
1559 : 0, /* relation kind (ditto) */
1560 : GetUserId(), /* owner's ID */
1561 : -1, /* internal size (always varlena) */
1562 : TYPTYPE_RANGE, /* type-type (range type) */
1563 : TYPCATEGORY_RANGE, /* type-category (range type) */
1564 : false, /* range types are never preferred */
1565 : DEFAULT_TYPDELIM, /* array element delimiter */
1566 : F_RANGE_IN, /* input procedure */
1567 : F_RANGE_OUT, /* output procedure */
1568 : F_RANGE_RECV, /* receive procedure */
1569 : F_RANGE_SEND, /* send procedure */
1570 : InvalidOid, /* typmodin procedure - none */
1571 : InvalidOid, /* typmodout procedure - none */
1572 : F_RANGE_TYPANALYZE, /* analyze procedure */
1573 : InvalidOid, /* subscript procedure - none */
1574 : InvalidOid, /* element type ID - none */
1575 : false, /* this is not an array type */
1576 : rangeArrayOid, /* array type we are about to create */
1577 : InvalidOid, /* base type ID (only for domains) */
1578 : NULL, /* never a default type value */
1579 : NULL, /* no binary form available either */
1580 : false, /* never passed by value */
1581 : alignment, /* alignment */
1582 : TYPSTORAGE_EXTENDED, /* TOAST strategy (always extended) */
1583 : -1, /* typMod (Domains only) */
1584 : 0, /* Array dimensions of typbasetype */
1585 : false, /* Type NOT NULL */
1586 : InvalidOid); /* type's collation (ranges never have one) */
1587 : Assert(typoid == InvalidOid || typoid == address.objectId);
1588 178 : typoid = address.objectId;
1589 :
1590 : /* Create the multirange that goes with it */
1591 178 : if (multirangeTypeName)
1592 : {
1593 : Oid old_typoid;
1594 :
1595 : /*
1596 : * Look to see if multirange type already exists.
1597 : */
1598 36 : old_typoid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
1599 : CStringGetDatum(multirangeTypeName),
1600 : ObjectIdGetDatum(multirangeNamespace));
1601 :
1602 : /*
1603 : * If it's not a shell, see if it's an autogenerated array type, and
1604 : * if so rename it out of the way.
1605 : */
1606 36 : if (OidIsValid(old_typoid) && get_typisdefined(old_typoid))
1607 : {
1608 12 : if (!moveArrayTypeName(old_typoid, multirangeTypeName, multirangeNamespace))
1609 6 : ereport(ERROR,
1610 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1611 : errmsg("type \"%s\" already exists", multirangeTypeName)));
1612 : }
1613 : }
1614 : else
1615 : {
1616 : /* Generate multirange name automatically */
1617 142 : multirangeNamespace = typeNamespace;
1618 142 : multirangeTypeName = makeMultirangeTypeName(typeName, multirangeNamespace);
1619 : }
1620 :
1621 : mltrngaddress =
1622 160 : TypeCreate(multirangeOid, /* force assignment of this type OID */
1623 : multirangeTypeName, /* type name */
1624 : multirangeNamespace, /* namespace */
1625 : InvalidOid, /* relation oid (n/a here) */
1626 : 0, /* relation kind (ditto) */
1627 : GetUserId(), /* owner's ID */
1628 : -1, /* internal size (always varlena) */
1629 : TYPTYPE_MULTIRANGE, /* type-type (multirange type) */
1630 : TYPCATEGORY_RANGE, /* type-category (range type) */
1631 : false, /* multirange types are never preferred */
1632 : DEFAULT_TYPDELIM, /* array element delimiter */
1633 : F_MULTIRANGE_IN, /* input procedure */
1634 : F_MULTIRANGE_OUT, /* output procedure */
1635 : F_MULTIRANGE_RECV, /* receive procedure */
1636 : F_MULTIRANGE_SEND, /* send procedure */
1637 : InvalidOid, /* typmodin procedure - none */
1638 : InvalidOid, /* typmodout procedure - none */
1639 : F_MULTIRANGE_TYPANALYZE, /* analyze procedure */
1640 : InvalidOid, /* subscript procedure - none */
1641 : InvalidOid, /* element type ID - none */
1642 : false, /* this is not an array type */
1643 : multirangeArrayOid, /* array type we are about to create */
1644 : InvalidOid, /* base type ID (only for domains) */
1645 : NULL, /* never a default type value */
1646 : NULL, /* no binary form available either */
1647 : false, /* never passed by value */
1648 : alignment, /* alignment */
1649 : 'x', /* TOAST strategy (always extended) */
1650 : -1, /* typMod (Domains only) */
1651 : 0, /* Array dimensions of typbasetype */
1652 : false, /* Type NOT NULL */
1653 : InvalidOid); /* type's collation (ranges never have one) */
1654 : Assert(multirangeOid == mltrngaddress.objectId);
1655 :
1656 : /* Create the entry in pg_range */
1657 160 : RangeCreate(typoid, rangeSubtype, rangeCollation, rangeSubOpclass,
1658 : rangeCanonical, rangeSubtypeDiff, multirangeOid);
1659 :
1660 : /*
1661 : * Create the array type that goes with it.
1662 : */
1663 160 : rangeArrayName = makeArrayTypeName(typeName, typeNamespace);
1664 :
1665 160 : TypeCreate(rangeArrayOid, /* force assignment of this type OID */
1666 : rangeArrayName, /* type name */
1667 : typeNamespace, /* namespace */
1668 : InvalidOid, /* relation oid (n/a here) */
1669 : 0, /* relation kind (ditto) */
1670 : GetUserId(), /* owner's ID */
1671 : -1, /* internal size (always varlena) */
1672 : TYPTYPE_BASE, /* type-type (base type) */
1673 : TYPCATEGORY_ARRAY, /* type-category (array) */
1674 : false, /* array types are never preferred */
1675 : DEFAULT_TYPDELIM, /* array element delimiter */
1676 : F_ARRAY_IN, /* input procedure */
1677 : F_ARRAY_OUT, /* output procedure */
1678 : F_ARRAY_RECV, /* receive procedure */
1679 : F_ARRAY_SEND, /* send procedure */
1680 : InvalidOid, /* typmodin procedure - none */
1681 : InvalidOid, /* typmodout procedure - none */
1682 : F_ARRAY_TYPANALYZE, /* analyze procedure */
1683 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
1684 : typoid, /* element type ID */
1685 : true, /* yes this is an array type */
1686 : InvalidOid, /* no further array type */
1687 : InvalidOid, /* base type ID */
1688 : NULL, /* never a default type value */
1689 : NULL, /* binary default isn't sent either */
1690 : false, /* never passed by value */
1691 : alignment, /* alignment - same as range's */
1692 : TYPSTORAGE_EXTENDED, /* ARRAY is always toastable */
1693 : -1, /* typMod (Domains only) */
1694 : 0, /* Array dimensions of typbasetype */
1695 : false, /* Type NOT NULL */
1696 : InvalidOid); /* typcollation */
1697 :
1698 160 : pfree(rangeArrayName);
1699 :
1700 : /* Create the multirange's array type */
1701 :
1702 160 : multirangeArrayName = makeArrayTypeName(multirangeTypeName, typeNamespace);
1703 :
1704 160 : TypeCreate(multirangeArrayOid, /* force assignment of this type OID */
1705 : multirangeArrayName, /* type name */
1706 : multirangeNamespace, /* namespace */
1707 : InvalidOid, /* relation oid (n/a here) */
1708 : 0, /* relation kind (ditto) */
1709 : GetUserId(), /* owner's ID */
1710 : -1, /* internal size (always varlena) */
1711 : TYPTYPE_BASE, /* type-type (base type) */
1712 : TYPCATEGORY_ARRAY, /* type-category (array) */
1713 : false, /* array types are never preferred */
1714 : DEFAULT_TYPDELIM, /* array element delimiter */
1715 : F_ARRAY_IN, /* input procedure */
1716 : F_ARRAY_OUT, /* output procedure */
1717 : F_ARRAY_RECV, /* receive procedure */
1718 : F_ARRAY_SEND, /* send procedure */
1719 : InvalidOid, /* typmodin procedure - none */
1720 : InvalidOid, /* typmodout procedure - none */
1721 : F_ARRAY_TYPANALYZE, /* analyze procedure */
1722 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
1723 : multirangeOid, /* element type ID */
1724 : true, /* yes this is an array type */
1725 : InvalidOid, /* no further array type */
1726 : InvalidOid, /* base type ID */
1727 : NULL, /* never a default type value */
1728 : NULL, /* binary default isn't sent either */
1729 : false, /* never passed by value */
1730 : alignment, /* alignment - same as range's */
1731 : 'x', /* ARRAY is always toastable */
1732 : -1, /* typMod (Domains only) */
1733 : 0, /* Array dimensions of typbasetype */
1734 : false, /* Type NOT NULL */
1735 : InvalidOid); /* typcollation */
1736 :
1737 : /* And create the constructor functions for this range type */
1738 160 : makeRangeConstructors(typeName, typeNamespace, typoid, rangeSubtype);
1739 160 : makeMultirangeConstructors(multirangeTypeName, typeNamespace,
1740 : multirangeOid, typoid, rangeArrayOid,
1741 : &castFuncOid);
1742 :
1743 : /* Create cast from the range type to its multirange type */
1744 160 : CastCreate(typoid, multirangeOid, castFuncOid, InvalidOid, InvalidOid,
1745 : COERCION_CODE_EXPLICIT, COERCION_METHOD_FUNCTION,
1746 : DEPENDENCY_INTERNAL);
1747 :
1748 160 : pfree(multirangeArrayName);
1749 :
1750 160 : return address;
1751 : }
1752 :
1753 : /*
1754 : * Because there may exist several range types over the same subtype, the
1755 : * range type can't be uniquely determined from the subtype. So it's
1756 : * impossible to define a polymorphic constructor; we have to generate new
1757 : * constructor functions explicitly for each range type.
1758 : *
1759 : * We actually define 4 functions, with 0 through 3 arguments. This is just
1760 : * to offer more convenience for the user.
1761 : */
1762 : static void
1763 160 : makeRangeConstructors(const char *name, Oid namespace,
1764 : Oid rangeOid, Oid subtype)
1765 : {
1766 : static const char *const prosrc[2] = {"range_constructor2",
1767 : "range_constructor3"};
1768 : static const int pronargs[2] = {2, 3};
1769 :
1770 : Oid constructorArgTypes[3];
1771 : ObjectAddress myself,
1772 : referenced;
1773 : int i;
1774 :
1775 160 : constructorArgTypes[0] = subtype;
1776 160 : constructorArgTypes[1] = subtype;
1777 160 : constructorArgTypes[2] = TEXTOID;
1778 :
1779 160 : referenced.classId = TypeRelationId;
1780 160 : referenced.objectId = rangeOid;
1781 160 : referenced.objectSubId = 0;
1782 :
1783 480 : for (i = 0; i < lengthof(prosrc); i++)
1784 : {
1785 : oidvector *constructorArgTypesVector;
1786 :
1787 320 : constructorArgTypesVector = buildoidvector(constructorArgTypes,
1788 : pronargs[i]);
1789 :
1790 320 : myself = ProcedureCreate(name, /* name: same as range type */
1791 : namespace, /* namespace */
1792 : false, /* replace */
1793 : false, /* returns set */
1794 : rangeOid, /* return type */
1795 : BOOTSTRAP_SUPERUSERID, /* proowner */
1796 : INTERNALlanguageId, /* language */
1797 : F_FMGR_INTERNAL_VALIDATOR, /* language validator */
1798 : prosrc[i], /* prosrc */
1799 : NULL, /* probin */
1800 : NULL, /* prosqlbody */
1801 : PROKIND_FUNCTION,
1802 : false, /* security_definer */
1803 : false, /* leakproof */
1804 : false, /* isStrict */
1805 : PROVOLATILE_IMMUTABLE, /* volatility */
1806 : PROPARALLEL_SAFE, /* parallel safety */
1807 : constructorArgTypesVector, /* parameterTypes */
1808 : PointerGetDatum(NULL), /* allParameterTypes */
1809 : PointerGetDatum(NULL), /* parameterModes */
1810 : PointerGetDatum(NULL), /* parameterNames */
1811 : NIL, /* parameterDefaults */
1812 : PointerGetDatum(NULL), /* trftypes */
1813 : PointerGetDatum(NULL), /* proconfig */
1814 : InvalidOid, /* prosupport */
1815 : 1.0, /* procost */
1816 : 0.0); /* prorows */
1817 :
1818 : /*
1819 : * Make the constructors internally-dependent on the range type so
1820 : * that they go away silently when the type is dropped. Note that
1821 : * pg_dump depends on this choice to avoid dumping the constructors.
1822 : */
1823 320 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1824 : }
1825 160 : }
1826 :
1827 : /*
1828 : * We make a separate multirange constructor for each range type
1829 : * so its name can include the base type, like range constructors do.
1830 : * If we had an anyrangearray polymorphic type we could use it here,
1831 : * but since each type has its own constructor name there's no need.
1832 : *
1833 : * Sets castFuncOid to the oid of the new constructor that can be used
1834 : * to cast from a range to a multirange.
1835 : */
1836 : static void
1837 160 : makeMultirangeConstructors(const char *name, Oid namespace,
1838 : Oid multirangeOid, Oid rangeOid, Oid rangeArrayOid,
1839 : Oid *castFuncOid)
1840 : {
1841 : ObjectAddress myself,
1842 : referenced;
1843 : oidvector *argtypes;
1844 : Datum allParamTypes;
1845 : ArrayType *allParameterTypes;
1846 : Datum paramModes;
1847 : ArrayType *parameterModes;
1848 :
1849 160 : referenced.classId = TypeRelationId;
1850 160 : referenced.objectId = multirangeOid;
1851 160 : referenced.objectSubId = 0;
1852 :
1853 : /* 0-arg constructor - for empty multiranges */
1854 160 : argtypes = buildoidvector(NULL, 0);
1855 160 : myself = ProcedureCreate(name, /* name: same as multirange type */
1856 : namespace,
1857 : false, /* replace */
1858 : false, /* returns set */
1859 : multirangeOid, /* return type */
1860 : BOOTSTRAP_SUPERUSERID, /* proowner */
1861 : INTERNALlanguageId, /* language */
1862 : F_FMGR_INTERNAL_VALIDATOR,
1863 : "multirange_constructor0", /* prosrc */
1864 : NULL, /* probin */
1865 : NULL, /* prosqlbody */
1866 : PROKIND_FUNCTION,
1867 : false, /* security_definer */
1868 : false, /* leakproof */
1869 : true, /* isStrict */
1870 : PROVOLATILE_IMMUTABLE, /* volatility */
1871 : PROPARALLEL_SAFE, /* parallel safety */
1872 : argtypes, /* parameterTypes */
1873 : PointerGetDatum(NULL), /* allParameterTypes */
1874 : PointerGetDatum(NULL), /* parameterModes */
1875 : PointerGetDatum(NULL), /* parameterNames */
1876 : NIL, /* parameterDefaults */
1877 : PointerGetDatum(NULL), /* trftypes */
1878 : PointerGetDatum(NULL), /* proconfig */
1879 : InvalidOid, /* prosupport */
1880 : 1.0, /* procost */
1881 : 0.0); /* prorows */
1882 :
1883 : /*
1884 : * Make the constructor internally-dependent on the multirange type so
1885 : * that they go away silently when the type is dropped. Note that pg_dump
1886 : * depends on this choice to avoid dumping the constructors.
1887 : */
1888 160 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1889 160 : pfree(argtypes);
1890 :
1891 : /*
1892 : * 1-arg constructor - for casts
1893 : *
1894 : * In theory we shouldn't need both this and the vararg (n-arg)
1895 : * constructor, but having a separate 1-arg function lets us define casts
1896 : * against it.
1897 : */
1898 160 : argtypes = buildoidvector(&rangeOid, 1);
1899 160 : myself = ProcedureCreate(name, /* name: same as multirange type */
1900 : namespace,
1901 : false, /* replace */
1902 : false, /* returns set */
1903 : multirangeOid, /* return type */
1904 : BOOTSTRAP_SUPERUSERID, /* proowner */
1905 : INTERNALlanguageId, /* language */
1906 : F_FMGR_INTERNAL_VALIDATOR,
1907 : "multirange_constructor1", /* prosrc */
1908 : NULL, /* probin */
1909 : NULL, /* prosqlbody */
1910 : PROKIND_FUNCTION,
1911 : false, /* security_definer */
1912 : false, /* leakproof */
1913 : true, /* isStrict */
1914 : PROVOLATILE_IMMUTABLE, /* volatility */
1915 : PROPARALLEL_SAFE, /* parallel safety */
1916 : argtypes, /* parameterTypes */
1917 : PointerGetDatum(NULL), /* allParameterTypes */
1918 : PointerGetDatum(NULL), /* parameterModes */
1919 : PointerGetDatum(NULL), /* parameterNames */
1920 : NIL, /* parameterDefaults */
1921 : PointerGetDatum(NULL), /* trftypes */
1922 : PointerGetDatum(NULL), /* proconfig */
1923 : InvalidOid, /* prosupport */
1924 : 1.0, /* procost */
1925 : 0.0); /* prorows */
1926 : /* ditto */
1927 160 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1928 160 : pfree(argtypes);
1929 160 : *castFuncOid = myself.objectId;
1930 :
1931 : /* n-arg constructor - vararg */
1932 160 : argtypes = buildoidvector(&rangeArrayOid, 1);
1933 160 : allParamTypes = ObjectIdGetDatum(rangeArrayOid);
1934 160 : allParameterTypes = construct_array_builtin(&allParamTypes, 1, OIDOID);
1935 160 : paramModes = CharGetDatum(FUNC_PARAM_VARIADIC);
1936 160 : parameterModes = construct_array_builtin(¶mModes, 1, CHAROID);
1937 160 : myself = ProcedureCreate(name, /* name: same as multirange type */
1938 : namespace,
1939 : false, /* replace */
1940 : false, /* returns set */
1941 : multirangeOid, /* return type */
1942 : BOOTSTRAP_SUPERUSERID, /* proowner */
1943 : INTERNALlanguageId, /* language */
1944 : F_FMGR_INTERNAL_VALIDATOR,
1945 : "multirange_constructor2", /* prosrc */
1946 : NULL, /* probin */
1947 : NULL, /* prosqlbody */
1948 : PROKIND_FUNCTION,
1949 : false, /* security_definer */
1950 : false, /* leakproof */
1951 : true, /* isStrict */
1952 : PROVOLATILE_IMMUTABLE, /* volatility */
1953 : PROPARALLEL_SAFE, /* parallel safety */
1954 : argtypes, /* parameterTypes */
1955 : PointerGetDatum(allParameterTypes), /* allParameterTypes */
1956 : PointerGetDatum(parameterModes), /* parameterModes */
1957 : PointerGetDatum(NULL), /* parameterNames */
1958 : NIL, /* parameterDefaults */
1959 : PointerGetDatum(NULL), /* trftypes */
1960 : PointerGetDatum(NULL), /* proconfig */
1961 : InvalidOid, /* prosupport */
1962 : 1.0, /* procost */
1963 : 0.0); /* prorows */
1964 : /* ditto */
1965 160 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1966 160 : pfree(argtypes);
1967 160 : pfree(allParameterTypes);
1968 160 : pfree(parameterModes);
1969 160 : }
1970 :
1971 : /*
1972 : * Find suitable I/O and other support functions for a type.
1973 : *
1974 : * typeOid is the type's OID (which will already exist, if only as a shell
1975 : * type).
1976 : */
1977 :
1978 : static Oid
1979 198 : findTypeInputFunction(List *procname, Oid typeOid)
1980 : {
1981 : Oid argList[3];
1982 : Oid procOid;
1983 : Oid procOid2;
1984 :
1985 : /*
1986 : * Input functions can take a single argument of type CSTRING, or three
1987 : * arguments (string, typioparam OID, typmod). Whine about ambiguity if
1988 : * both forms exist.
1989 : */
1990 198 : argList[0] = CSTRINGOID;
1991 198 : argList[1] = OIDOID;
1992 198 : argList[2] = INT4OID;
1993 :
1994 198 : procOid = LookupFuncName(procname, 1, argList, true);
1995 198 : procOid2 = LookupFuncName(procname, 3, argList, true);
1996 198 : if (OidIsValid(procOid))
1997 : {
1998 182 : if (OidIsValid(procOid2))
1999 0 : ereport(ERROR,
2000 : (errcode(ERRCODE_AMBIGUOUS_FUNCTION),
2001 : errmsg("type input function %s has multiple matches",
2002 : NameListToString(procname))));
2003 : }
2004 : else
2005 : {
2006 16 : procOid = procOid2;
2007 : /* If not found, reference the 1-argument signature in error msg */
2008 16 : if (!OidIsValid(procOid))
2009 0 : ereport(ERROR,
2010 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2011 : errmsg("function %s does not exist",
2012 : func_signature_string(procname, 1, NIL, argList))));
2013 : }
2014 :
2015 : /* Input functions must return the target type. */
2016 198 : if (get_func_rettype(procOid) != typeOid)
2017 6 : ereport(ERROR,
2018 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2019 : errmsg("type input function %s must return type %s",
2020 : NameListToString(procname), format_type_be(typeOid))));
2021 :
2022 : /*
2023 : * Print warnings if any of the type's I/O functions are marked volatile.
2024 : * There is a general assumption that I/O functions are stable or
2025 : * immutable; this allows us for example to mark record_in/record_out
2026 : * stable rather than volatile. Ideally we would throw errors not just
2027 : * warnings here; but since this check is new as of 9.5, and since the
2028 : * volatility marking might be just an error-of-omission and not a true
2029 : * indication of how the function behaves, we'll let it pass as a warning
2030 : * for now.
2031 : */
2032 192 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2033 0 : ereport(WARNING,
2034 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2035 : errmsg("type input function %s should not be volatile",
2036 : NameListToString(procname))));
2037 :
2038 192 : return procOid;
2039 : }
2040 :
2041 : static Oid
2042 192 : findTypeOutputFunction(List *procname, Oid typeOid)
2043 : {
2044 : Oid argList[1];
2045 : Oid procOid;
2046 :
2047 : /*
2048 : * Output functions always take a single argument of the type and return
2049 : * cstring.
2050 : */
2051 192 : argList[0] = typeOid;
2052 :
2053 192 : procOid = LookupFuncName(procname, 1, argList, true);
2054 192 : if (!OidIsValid(procOid))
2055 0 : ereport(ERROR,
2056 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2057 : errmsg("function %s does not exist",
2058 : func_signature_string(procname, 1, NIL, argList))));
2059 :
2060 192 : if (get_func_rettype(procOid) != CSTRINGOID)
2061 0 : ereport(ERROR,
2062 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2063 : errmsg("type output function %s must return type %s",
2064 : NameListToString(procname), "cstring")));
2065 :
2066 : /* Just a warning for now, per comments in findTypeInputFunction */
2067 192 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2068 0 : ereport(WARNING,
2069 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2070 : errmsg("type output function %s should not be volatile",
2071 : NameListToString(procname))));
2072 :
2073 192 : return procOid;
2074 : }
2075 :
2076 : static Oid
2077 46 : findTypeReceiveFunction(List *procname, Oid typeOid)
2078 : {
2079 : Oid argList[3];
2080 : Oid procOid;
2081 : Oid procOid2;
2082 :
2083 : /*
2084 : * Receive functions can take a single argument of type INTERNAL, or three
2085 : * arguments (internal, typioparam OID, typmod). Whine about ambiguity if
2086 : * both forms exist.
2087 : */
2088 46 : argList[0] = INTERNALOID;
2089 46 : argList[1] = OIDOID;
2090 46 : argList[2] = INT4OID;
2091 :
2092 46 : procOid = LookupFuncName(procname, 1, argList, true);
2093 46 : procOid2 = LookupFuncName(procname, 3, argList, true);
2094 46 : if (OidIsValid(procOid))
2095 : {
2096 36 : if (OidIsValid(procOid2))
2097 0 : ereport(ERROR,
2098 : (errcode(ERRCODE_AMBIGUOUS_FUNCTION),
2099 : errmsg("type receive function %s has multiple matches",
2100 : NameListToString(procname))));
2101 : }
2102 : else
2103 : {
2104 10 : procOid = procOid2;
2105 : /* If not found, reference the 1-argument signature in error msg */
2106 10 : if (!OidIsValid(procOid))
2107 0 : ereport(ERROR,
2108 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2109 : errmsg("function %s does not exist",
2110 : func_signature_string(procname, 1, NIL, argList))));
2111 : }
2112 :
2113 : /* Receive functions must return the target type. */
2114 46 : if (get_func_rettype(procOid) != typeOid)
2115 0 : ereport(ERROR,
2116 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2117 : errmsg("type receive function %s must return type %s",
2118 : NameListToString(procname), format_type_be(typeOid))));
2119 :
2120 : /* Just a warning for now, per comments in findTypeInputFunction */
2121 46 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2122 0 : ereport(WARNING,
2123 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2124 : errmsg("type receive function %s should not be volatile",
2125 : NameListToString(procname))));
2126 :
2127 46 : return procOid;
2128 : }
2129 :
2130 : static Oid
2131 46 : findTypeSendFunction(List *procname, Oid typeOid)
2132 : {
2133 : Oid argList[1];
2134 : Oid procOid;
2135 :
2136 : /*
2137 : * Send functions always take a single argument of the type and return
2138 : * bytea.
2139 : */
2140 46 : argList[0] = typeOid;
2141 :
2142 46 : procOid = LookupFuncName(procname, 1, argList, true);
2143 46 : if (!OidIsValid(procOid))
2144 0 : ereport(ERROR,
2145 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2146 : errmsg("function %s does not exist",
2147 : func_signature_string(procname, 1, NIL, argList))));
2148 :
2149 46 : if (get_func_rettype(procOid) != BYTEAOID)
2150 0 : ereport(ERROR,
2151 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2152 : errmsg("type send function %s must return type %s",
2153 : NameListToString(procname), "bytea")));
2154 :
2155 : /* Just a warning for now, per comments in findTypeInputFunction */
2156 46 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2157 0 : ereport(WARNING,
2158 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2159 : errmsg("type send function %s should not be volatile",
2160 : NameListToString(procname))));
2161 :
2162 46 : return procOid;
2163 : }
2164 :
2165 : static Oid
2166 14 : findTypeTypmodinFunction(List *procname)
2167 : {
2168 : Oid argList[1];
2169 : Oid procOid;
2170 :
2171 : /*
2172 : * typmodin functions always take one cstring[] argument and return int4.
2173 : */
2174 14 : argList[0] = CSTRINGARRAYOID;
2175 :
2176 14 : procOid = LookupFuncName(procname, 1, argList, true);
2177 14 : if (!OidIsValid(procOid))
2178 0 : ereport(ERROR,
2179 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2180 : errmsg("function %s does not exist",
2181 : func_signature_string(procname, 1, NIL, argList))));
2182 :
2183 14 : if (get_func_rettype(procOid) != INT4OID)
2184 0 : ereport(ERROR,
2185 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2186 : errmsg("typmod_in function %s must return type %s",
2187 : NameListToString(procname), "integer")));
2188 :
2189 : /* Just a warning for now, per comments in findTypeInputFunction */
2190 14 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2191 0 : ereport(WARNING,
2192 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2193 : errmsg("type modifier input function %s should not be volatile",
2194 : NameListToString(procname))));
2195 :
2196 14 : return procOid;
2197 : }
2198 :
2199 : static Oid
2200 14 : findTypeTypmodoutFunction(List *procname)
2201 : {
2202 : Oid argList[1];
2203 : Oid procOid;
2204 :
2205 : /*
2206 : * typmodout functions always take one int4 argument and return cstring.
2207 : */
2208 14 : argList[0] = INT4OID;
2209 :
2210 14 : procOid = LookupFuncName(procname, 1, argList, true);
2211 14 : if (!OidIsValid(procOid))
2212 0 : ereport(ERROR,
2213 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2214 : errmsg("function %s does not exist",
2215 : func_signature_string(procname, 1, NIL, argList))));
2216 :
2217 14 : if (get_func_rettype(procOid) != CSTRINGOID)
2218 0 : ereport(ERROR,
2219 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2220 : errmsg("typmod_out function %s must return type %s",
2221 : NameListToString(procname), "cstring")));
2222 :
2223 : /* Just a warning for now, per comments in findTypeInputFunction */
2224 14 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2225 0 : ereport(WARNING,
2226 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2227 : errmsg("type modifier output function %s should not be volatile",
2228 : NameListToString(procname))));
2229 :
2230 14 : return procOid;
2231 : }
2232 :
2233 : static Oid
2234 6 : findTypeAnalyzeFunction(List *procname, Oid typeOid)
2235 : {
2236 : Oid argList[1];
2237 : Oid procOid;
2238 :
2239 : /*
2240 : * Analyze functions always take one INTERNAL argument and return bool.
2241 : */
2242 6 : argList[0] = INTERNALOID;
2243 :
2244 6 : procOid = LookupFuncName(procname, 1, argList, true);
2245 6 : if (!OidIsValid(procOid))
2246 0 : ereport(ERROR,
2247 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2248 : errmsg("function %s does not exist",
2249 : func_signature_string(procname, 1, NIL, argList))));
2250 :
2251 6 : if (get_func_rettype(procOid) != BOOLOID)
2252 0 : ereport(ERROR,
2253 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2254 : errmsg("type analyze function %s must return type %s",
2255 : NameListToString(procname), "boolean")));
2256 :
2257 6 : return procOid;
2258 : }
2259 :
2260 : static Oid
2261 22 : findTypeSubscriptingFunction(List *procname, Oid typeOid)
2262 : {
2263 : Oid argList[1];
2264 : Oid procOid;
2265 :
2266 : /*
2267 : * Subscripting support functions always take one INTERNAL argument and
2268 : * return INTERNAL. (The argument is not used, but we must have it to
2269 : * maintain type safety.)
2270 : */
2271 22 : argList[0] = INTERNALOID;
2272 :
2273 22 : procOid = LookupFuncName(procname, 1, argList, true);
2274 22 : if (!OidIsValid(procOid))
2275 0 : ereport(ERROR,
2276 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2277 : errmsg("function %s does not exist",
2278 : func_signature_string(procname, 1, NIL, argList))));
2279 :
2280 22 : if (get_func_rettype(procOid) != INTERNALOID)
2281 0 : ereport(ERROR,
2282 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2283 : errmsg("type subscripting function %s must return type %s",
2284 : NameListToString(procname), "internal")));
2285 :
2286 : /*
2287 : * We disallow array_subscript_handler() from being selected explicitly,
2288 : * since that must only be applied to autogenerated array types.
2289 : */
2290 22 : if (procOid == F_ARRAY_SUBSCRIPT_HANDLER)
2291 0 : ereport(ERROR,
2292 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2293 : errmsg("user-defined types cannot use subscripting function %s",
2294 : NameListToString(procname))));
2295 :
2296 22 : return procOid;
2297 : }
2298 :
2299 : /*
2300 : * Find suitable support functions and opclasses for a range type.
2301 : */
2302 :
2303 : /*
2304 : * Find named btree opclass for subtype, or default btree opclass if
2305 : * opcname is NIL.
2306 : */
2307 : static Oid
2308 184 : findRangeSubOpclass(List *opcname, Oid subtype)
2309 : {
2310 : Oid opcid;
2311 : Oid opInputType;
2312 :
2313 184 : if (opcname != NIL)
2314 : {
2315 8 : opcid = get_opclass_oid(BTREE_AM_OID, opcname, false);
2316 :
2317 : /*
2318 : * Verify that the operator class accepts this datatype. Note we will
2319 : * accept binary compatibility.
2320 : */
2321 8 : opInputType = get_opclass_input_type(opcid);
2322 8 : if (!IsBinaryCoercible(subtype, opInputType))
2323 0 : ereport(ERROR,
2324 : (errcode(ERRCODE_DATATYPE_MISMATCH),
2325 : errmsg("operator class \"%s\" does not accept data type %s",
2326 : NameListToString(opcname),
2327 : format_type_be(subtype))));
2328 : }
2329 : else
2330 : {
2331 176 : opcid = GetDefaultOpClass(subtype, BTREE_AM_OID);
2332 176 : if (!OidIsValid(opcid))
2333 : {
2334 : /* We spell the error message identically to ResolveOpClass */
2335 0 : ereport(ERROR,
2336 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2337 : errmsg("data type %s has no default operator class for access method \"%s\"",
2338 : format_type_be(subtype), "btree"),
2339 : errhint("You must specify an operator class for the range type or define a default operator class for the subtype.")));
2340 : }
2341 : }
2342 :
2343 184 : return opcid;
2344 : }
2345 :
2346 : static Oid
2347 0 : findRangeCanonicalFunction(List *procname, Oid typeOid)
2348 : {
2349 : Oid argList[1];
2350 : Oid procOid;
2351 : AclResult aclresult;
2352 :
2353 : /*
2354 : * Range canonical functions must take and return the range type, and must
2355 : * be immutable.
2356 : */
2357 0 : argList[0] = typeOid;
2358 :
2359 0 : procOid = LookupFuncName(procname, 1, argList, true);
2360 :
2361 0 : if (!OidIsValid(procOid))
2362 0 : ereport(ERROR,
2363 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2364 : errmsg("function %s does not exist",
2365 : func_signature_string(procname, 1, NIL, argList))));
2366 :
2367 0 : if (get_func_rettype(procOid) != typeOid)
2368 0 : ereport(ERROR,
2369 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2370 : errmsg("range canonical function %s must return range type",
2371 : func_signature_string(procname, 1, NIL, argList))));
2372 :
2373 0 : if (func_volatile(procOid) != PROVOLATILE_IMMUTABLE)
2374 0 : ereport(ERROR,
2375 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2376 : errmsg("range canonical function %s must be immutable",
2377 : func_signature_string(procname, 1, NIL, argList))));
2378 :
2379 : /* Also, range type's creator must have permission to call function */
2380 0 : aclresult = object_aclcheck(ProcedureRelationId, procOid, GetUserId(), ACL_EXECUTE);
2381 0 : if (aclresult != ACLCHECK_OK)
2382 0 : aclcheck_error(aclresult, OBJECT_FUNCTION, get_func_name(procOid));
2383 :
2384 0 : return procOid;
2385 : }
2386 :
2387 : static Oid
2388 14 : findRangeSubtypeDiffFunction(List *procname, Oid subtype)
2389 : {
2390 : Oid argList[2];
2391 : Oid procOid;
2392 : AclResult aclresult;
2393 :
2394 : /*
2395 : * Range subtype diff functions must take two arguments of the subtype,
2396 : * must return float8, and must be immutable.
2397 : */
2398 14 : argList[0] = subtype;
2399 14 : argList[1] = subtype;
2400 :
2401 14 : procOid = LookupFuncName(procname, 2, argList, true);
2402 :
2403 14 : if (!OidIsValid(procOid))
2404 6 : ereport(ERROR,
2405 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2406 : errmsg("function %s does not exist",
2407 : func_signature_string(procname, 2, NIL, argList))));
2408 :
2409 8 : if (get_func_rettype(procOid) != FLOAT8OID)
2410 0 : ereport(ERROR,
2411 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2412 : errmsg("range subtype diff function %s must return type %s",
2413 : func_signature_string(procname, 2, NIL, argList),
2414 : "double precision")));
2415 :
2416 8 : if (func_volatile(procOid) != PROVOLATILE_IMMUTABLE)
2417 0 : ereport(ERROR,
2418 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2419 : errmsg("range subtype diff function %s must be immutable",
2420 : func_signature_string(procname, 2, NIL, argList))));
2421 :
2422 : /* Also, range type's creator must have permission to call function */
2423 8 : aclresult = object_aclcheck(ProcedureRelationId, procOid, GetUserId(), ACL_EXECUTE);
2424 8 : if (aclresult != ACLCHECK_OK)
2425 0 : aclcheck_error(aclresult, OBJECT_FUNCTION, get_func_name(procOid));
2426 :
2427 8 : return procOid;
2428 : }
2429 :
2430 : /*
2431 : * AssignTypeArrayOid
2432 : *
2433 : * Pre-assign the type's array OID for use in pg_type.typarray
2434 : */
2435 : Oid
2436 67076 : AssignTypeArrayOid(void)
2437 : {
2438 : Oid type_array_oid;
2439 :
2440 : /* Use binary-upgrade override for pg_type.typarray? */
2441 67076 : if (IsBinaryUpgrade)
2442 : {
2443 1646 : if (!OidIsValid(binary_upgrade_next_array_pg_type_oid))
2444 0 : ereport(ERROR,
2445 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2446 : errmsg("pg_type array OID value not set when in binary upgrade mode")));
2447 :
2448 1646 : type_array_oid = binary_upgrade_next_array_pg_type_oid;
2449 1646 : binary_upgrade_next_array_pg_type_oid = InvalidOid;
2450 : }
2451 : else
2452 : {
2453 65430 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2454 :
2455 65430 : type_array_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2456 : Anum_pg_type_oid);
2457 65430 : table_close(pg_type, AccessShareLock);
2458 : }
2459 :
2460 67076 : return type_array_oid;
2461 : }
2462 :
2463 : /*
2464 : * AssignTypeMultirangeOid
2465 : *
2466 : * Pre-assign the range type's multirange OID for use in pg_type.oid
2467 : */
2468 : Oid
2469 178 : AssignTypeMultirangeOid(void)
2470 : {
2471 : Oid type_multirange_oid;
2472 :
2473 : /* Use binary-upgrade override for pg_type.oid? */
2474 178 : if (IsBinaryUpgrade)
2475 : {
2476 12 : if (!OidIsValid(binary_upgrade_next_mrng_pg_type_oid))
2477 0 : ereport(ERROR,
2478 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2479 : errmsg("pg_type multirange OID value not set when in binary upgrade mode")));
2480 :
2481 12 : type_multirange_oid = binary_upgrade_next_mrng_pg_type_oid;
2482 12 : binary_upgrade_next_mrng_pg_type_oid = InvalidOid;
2483 : }
2484 : else
2485 : {
2486 166 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2487 :
2488 166 : type_multirange_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2489 : Anum_pg_type_oid);
2490 166 : table_close(pg_type, AccessShareLock);
2491 : }
2492 :
2493 178 : return type_multirange_oid;
2494 : }
2495 :
2496 : /*
2497 : * AssignTypeMultirangeArrayOid
2498 : *
2499 : * Pre-assign the range type's multirange array OID for use in pg_type.typarray
2500 : */
2501 : Oid
2502 178 : AssignTypeMultirangeArrayOid(void)
2503 : {
2504 : Oid type_multirange_array_oid;
2505 :
2506 : /* Use binary-upgrade override for pg_type.oid? */
2507 178 : if (IsBinaryUpgrade)
2508 : {
2509 12 : if (!OidIsValid(binary_upgrade_next_mrng_array_pg_type_oid))
2510 0 : ereport(ERROR,
2511 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2512 : errmsg("pg_type multirange array OID value not set when in binary upgrade mode")));
2513 :
2514 12 : type_multirange_array_oid = binary_upgrade_next_mrng_array_pg_type_oid;
2515 12 : binary_upgrade_next_mrng_array_pg_type_oid = InvalidOid;
2516 : }
2517 : else
2518 : {
2519 166 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2520 :
2521 166 : type_multirange_array_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2522 : Anum_pg_type_oid);
2523 166 : table_close(pg_type, AccessShareLock);
2524 : }
2525 :
2526 178 : return type_multirange_array_oid;
2527 : }
2528 :
2529 :
2530 : /*-------------------------------------------------------------------
2531 : * DefineCompositeType
2532 : *
2533 : * Create a Composite Type relation.
2534 : * `DefineRelation' does all the work, we just provide the correct
2535 : * arguments!
2536 : *
2537 : * If the relation already exists, then 'DefineRelation' will abort
2538 : * the xact...
2539 : *
2540 : * Return type is the new type's object address.
2541 : *-------------------------------------------------------------------
2542 : */
2543 : ObjectAddress
2544 4500 : DefineCompositeType(RangeVar *typevar, List *coldeflist)
2545 : {
2546 4500 : CreateStmt *createStmt = makeNode(CreateStmt);
2547 : Oid old_type_oid;
2548 : Oid typeNamespace;
2549 : ObjectAddress address;
2550 :
2551 : /*
2552 : * now set the parameters for keys/inheritance etc. All of these are
2553 : * uninteresting for composite types...
2554 : */
2555 4500 : createStmt->relation = typevar;
2556 4500 : createStmt->tableElts = coldeflist;
2557 4500 : createStmt->inhRelations = NIL;
2558 4500 : createStmt->constraints = NIL;
2559 4500 : createStmt->options = NIL;
2560 4500 : createStmt->oncommit = ONCOMMIT_NOOP;
2561 4500 : createStmt->tablespacename = NULL;
2562 4500 : createStmt->if_not_exists = false;
2563 :
2564 : /*
2565 : * Check for collision with an existing type name. If there is one and
2566 : * it's an autogenerated array, we can rename it out of the way. This
2567 : * check is here mainly to get a better error message about a "type"
2568 : * instead of below about a "relation".
2569 : */
2570 4500 : typeNamespace = RangeVarGetAndCheckCreationNamespace(createStmt->relation,
2571 : NoLock, NULL);
2572 4500 : RangeVarAdjustRelationPersistence(createStmt->relation, typeNamespace);
2573 : old_type_oid =
2574 4500 : GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
2575 : CStringGetDatum(createStmt->relation->relname),
2576 : ObjectIdGetDatum(typeNamespace));
2577 4500 : if (OidIsValid(old_type_oid))
2578 : {
2579 0 : if (!moveArrayTypeName(old_type_oid, createStmt->relation->relname, typeNamespace))
2580 0 : ereport(ERROR,
2581 : (errcode(ERRCODE_DUPLICATE_OBJECT),
2582 : errmsg("type \"%s\" already exists", createStmt->relation->relname)));
2583 : }
2584 :
2585 : /*
2586 : * Finally create the relation. This also creates the type.
2587 : */
2588 4500 : DefineRelation(createStmt, RELKIND_COMPOSITE_TYPE, InvalidOid, &address,
2589 : NULL);
2590 :
2591 4488 : return address;
2592 : }
2593 :
2594 : /*
2595 : * AlterDomainDefault
2596 : *
2597 : * Routine implementing ALTER DOMAIN SET/DROP DEFAULT statements.
2598 : *
2599 : * Returns ObjectAddress of the modified domain.
2600 : */
2601 : ObjectAddress
2602 14 : AlterDomainDefault(List *names, Node *defaultRaw)
2603 : {
2604 : TypeName *typename;
2605 : Oid domainoid;
2606 : HeapTuple tup;
2607 : ParseState *pstate;
2608 : Relation rel;
2609 : char *defaultValue;
2610 14 : Node *defaultExpr = NULL; /* NULL if no default specified */
2611 14 : Datum new_record[Natts_pg_type] = {0};
2612 14 : bool new_record_nulls[Natts_pg_type] = {0};
2613 14 : bool new_record_repl[Natts_pg_type] = {0};
2614 : HeapTuple newtuple;
2615 : Form_pg_type typTup;
2616 : ObjectAddress address;
2617 :
2618 : /* Make a TypeName so we can use standard type lookup machinery */
2619 14 : typename = makeTypeNameFromNameList(names);
2620 14 : domainoid = typenameTypeId(NULL, typename);
2621 :
2622 : /* Look up the domain in the type table */
2623 14 : rel = table_open(TypeRelationId, RowExclusiveLock);
2624 :
2625 14 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2626 14 : if (!HeapTupleIsValid(tup))
2627 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2628 14 : typTup = (Form_pg_type) GETSTRUCT(tup);
2629 :
2630 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2631 14 : checkDomainOwner(tup);
2632 :
2633 : /* Setup new tuple */
2634 :
2635 : /* Store the new default into the tuple */
2636 14 : if (defaultRaw)
2637 : {
2638 : /* Create a dummy ParseState for transformExpr */
2639 8 : pstate = make_parsestate(NULL);
2640 :
2641 : /*
2642 : * Cook the colDef->raw_expr into an expression. Note: Name is
2643 : * strictly for error message
2644 : */
2645 8 : defaultExpr = cookDefault(pstate, defaultRaw,
2646 : typTup->typbasetype,
2647 : typTup->typtypmod,
2648 8 : NameStr(typTup->typname),
2649 : 0);
2650 :
2651 : /*
2652 : * If the expression is just a NULL constant, we treat the command
2653 : * like ALTER ... DROP DEFAULT. (But see note for same test in
2654 : * DefineDomain.)
2655 : */
2656 8 : if (defaultExpr == NULL ||
2657 8 : (IsA(defaultExpr, Const) && ((Const *) defaultExpr)->constisnull))
2658 : {
2659 : /* Default is NULL, drop it */
2660 0 : defaultExpr = NULL;
2661 0 : new_record_nulls[Anum_pg_type_typdefaultbin - 1] = true;
2662 0 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2663 0 : new_record_nulls[Anum_pg_type_typdefault - 1] = true;
2664 0 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2665 : }
2666 : else
2667 : {
2668 : /*
2669 : * Expression must be stored as a nodeToString result, but we also
2670 : * require a valid textual representation (mainly to make life
2671 : * easier for pg_dump).
2672 : */
2673 8 : defaultValue = deparse_expression(defaultExpr,
2674 : NIL, false, false);
2675 :
2676 : /*
2677 : * Form an updated tuple with the new default and write it back.
2678 : */
2679 8 : new_record[Anum_pg_type_typdefaultbin - 1] = CStringGetTextDatum(nodeToString(defaultExpr));
2680 :
2681 8 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2682 8 : new_record[Anum_pg_type_typdefault - 1] = CStringGetTextDatum(defaultValue);
2683 8 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2684 : }
2685 : }
2686 : else
2687 : {
2688 : /* ALTER ... DROP DEFAULT */
2689 6 : new_record_nulls[Anum_pg_type_typdefaultbin - 1] = true;
2690 6 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2691 6 : new_record_nulls[Anum_pg_type_typdefault - 1] = true;
2692 6 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2693 : }
2694 :
2695 14 : newtuple = heap_modify_tuple(tup, RelationGetDescr(rel),
2696 : new_record, new_record_nulls,
2697 : new_record_repl);
2698 :
2699 14 : CatalogTupleUpdate(rel, &tup->t_self, newtuple);
2700 :
2701 : /* Rebuild dependencies */
2702 14 : GenerateTypeDependencies(newtuple,
2703 : rel,
2704 : defaultExpr,
2705 : NULL, /* don't have typacl handy */
2706 : 0, /* relation kind is n/a */
2707 : false, /* a domain isn't an implicit array */
2708 : false, /* nor is it any kind of dependent type */
2709 : false, /* don't touch extension membership */
2710 : true); /* We do need to rebuild dependencies */
2711 :
2712 14 : InvokeObjectPostAlterHook(TypeRelationId, domainoid, 0);
2713 :
2714 14 : ObjectAddressSet(address, TypeRelationId, domainoid);
2715 :
2716 : /* Clean up */
2717 14 : table_close(rel, RowExclusiveLock);
2718 14 : heap_freetuple(newtuple);
2719 :
2720 14 : return address;
2721 : }
2722 :
2723 : /*
2724 : * AlterDomainNotNull
2725 : *
2726 : * Routine implementing ALTER DOMAIN SET/DROP NOT NULL statements.
2727 : *
2728 : * Returns ObjectAddress of the modified domain.
2729 : */
2730 : ObjectAddress
2731 36 : AlterDomainNotNull(List *names, bool notNull)
2732 : {
2733 : TypeName *typename;
2734 : Oid domainoid;
2735 : Relation typrel;
2736 : HeapTuple tup;
2737 : Form_pg_type typTup;
2738 36 : ObjectAddress address = InvalidObjectAddress;
2739 :
2740 : /* Make a TypeName so we can use standard type lookup machinery */
2741 36 : typename = makeTypeNameFromNameList(names);
2742 36 : domainoid = typenameTypeId(NULL, typename);
2743 :
2744 : /* Look up the domain in the type table */
2745 36 : typrel = table_open(TypeRelationId, RowExclusiveLock);
2746 :
2747 36 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2748 36 : if (!HeapTupleIsValid(tup))
2749 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2750 36 : typTup = (Form_pg_type) GETSTRUCT(tup);
2751 :
2752 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2753 36 : checkDomainOwner(tup);
2754 :
2755 : /* Is the domain already set to the desired constraint? */
2756 36 : if (typTup->typnotnull == notNull)
2757 : {
2758 0 : table_close(typrel, RowExclusiveLock);
2759 0 : return address;
2760 : }
2761 :
2762 36 : if (notNull)
2763 : {
2764 : Constraint *constr;
2765 :
2766 24 : constr = makeNode(Constraint);
2767 24 : constr->contype = CONSTR_NOTNULL;
2768 24 : constr->initially_valid = true;
2769 24 : constr->location = -1;
2770 :
2771 24 : domainAddNotNullConstraint(domainoid, typTup->typnamespace,
2772 : typTup->typbasetype, typTup->typtypmod,
2773 24 : constr, NameStr(typTup->typname), NULL);
2774 :
2775 24 : validateDomainNotNullConstraint(domainoid);
2776 : }
2777 : else
2778 : {
2779 : HeapTuple conTup;
2780 : ObjectAddress conobj;
2781 :
2782 12 : conTup = findDomainNotNullConstraint(domainoid);
2783 12 : if (conTup == NULL)
2784 0 : elog(ERROR, "could not find not-null constraint on domain \"%s\"", NameStr(typTup->typname));
2785 :
2786 12 : ObjectAddressSet(conobj, ConstraintRelationId, ((Form_pg_constraint) GETSTRUCT(conTup))->oid);
2787 12 : performDeletion(&conobj, DROP_RESTRICT, 0);
2788 : }
2789 :
2790 : /*
2791 : * Okay to update pg_type row. We can scribble on typTup because it's a
2792 : * copy.
2793 : */
2794 24 : typTup->typnotnull = notNull;
2795 :
2796 24 : CatalogTupleUpdate(typrel, &tup->t_self, tup);
2797 :
2798 24 : InvokeObjectPostAlterHook(TypeRelationId, domainoid, 0);
2799 :
2800 24 : ObjectAddressSet(address, TypeRelationId, domainoid);
2801 :
2802 : /* Clean up */
2803 24 : heap_freetuple(tup);
2804 24 : table_close(typrel, RowExclusiveLock);
2805 :
2806 24 : return address;
2807 : }
2808 :
2809 : /*
2810 : * AlterDomainDropConstraint
2811 : *
2812 : * Implements the ALTER DOMAIN DROP CONSTRAINT statement
2813 : *
2814 : * Returns ObjectAddress of the modified domain.
2815 : */
2816 : ObjectAddress
2817 60 : AlterDomainDropConstraint(List *names, const char *constrName,
2818 : DropBehavior behavior, bool missing_ok)
2819 : {
2820 : TypeName *typename;
2821 : Oid domainoid;
2822 : HeapTuple tup;
2823 : Relation rel;
2824 : Relation conrel;
2825 : SysScanDesc conscan;
2826 : ScanKeyData skey[3];
2827 : HeapTuple contup;
2828 60 : bool found = false;
2829 : ObjectAddress address;
2830 :
2831 : /* Make a TypeName so we can use standard type lookup machinery */
2832 60 : typename = makeTypeNameFromNameList(names);
2833 60 : domainoid = typenameTypeId(NULL, typename);
2834 :
2835 : /* Look up the domain in the type table */
2836 60 : rel = table_open(TypeRelationId, RowExclusiveLock);
2837 :
2838 60 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2839 60 : if (!HeapTupleIsValid(tup))
2840 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2841 :
2842 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2843 60 : checkDomainOwner(tup);
2844 :
2845 : /* Grab an appropriate lock on the pg_constraint relation */
2846 60 : conrel = table_open(ConstraintRelationId, RowExclusiveLock);
2847 :
2848 : /* Find and remove the target constraint */
2849 60 : ScanKeyInit(&skey[0],
2850 : Anum_pg_constraint_conrelid,
2851 : BTEqualStrategyNumber, F_OIDEQ,
2852 : ObjectIdGetDatum(InvalidOid));
2853 60 : ScanKeyInit(&skey[1],
2854 : Anum_pg_constraint_contypid,
2855 : BTEqualStrategyNumber, F_OIDEQ,
2856 : ObjectIdGetDatum(domainoid));
2857 60 : ScanKeyInit(&skey[2],
2858 : Anum_pg_constraint_conname,
2859 : BTEqualStrategyNumber, F_NAMEEQ,
2860 : CStringGetDatum(constrName));
2861 :
2862 60 : conscan = systable_beginscan(conrel, ConstraintRelidTypidNameIndexId, true,
2863 : NULL, 3, skey);
2864 :
2865 : /* There can be at most one matching row */
2866 60 : if ((contup = systable_getnext(conscan)) != NULL)
2867 : {
2868 48 : Form_pg_constraint construct = (Form_pg_constraint) GETSTRUCT(contup);
2869 : ObjectAddress conobj;
2870 :
2871 48 : if (construct->contype == CONSTRAINT_NOTNULL)
2872 : {
2873 12 : ((Form_pg_type) GETSTRUCT(tup))->typnotnull = false;
2874 12 : CatalogTupleUpdate(rel, &tup->t_self, tup);
2875 : }
2876 :
2877 48 : conobj.classId = ConstraintRelationId;
2878 48 : conobj.objectId = construct->oid;
2879 48 : conobj.objectSubId = 0;
2880 :
2881 48 : performDeletion(&conobj, behavior, 0);
2882 48 : found = true;
2883 : }
2884 :
2885 : /* Clean up after the scan */
2886 60 : systable_endscan(conscan);
2887 60 : table_close(conrel, RowExclusiveLock);
2888 :
2889 60 : if (!found)
2890 : {
2891 12 : if (!missing_ok)
2892 6 : ereport(ERROR,
2893 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2894 : errmsg("constraint \"%s\" of domain \"%s\" does not exist",
2895 : constrName, TypeNameToString(typename))));
2896 : else
2897 6 : ereport(NOTICE,
2898 : (errmsg("constraint \"%s\" of domain \"%s\" does not exist, skipping",
2899 : constrName, TypeNameToString(typename))));
2900 : }
2901 :
2902 : /*
2903 : * We must send out an sinval message for the domain, to ensure that any
2904 : * dependent plans get rebuilt. Since this command doesn't change the
2905 : * domain's pg_type row, that won't happen automatically; do it manually.
2906 : */
2907 54 : CacheInvalidateHeapTuple(rel, tup, NULL);
2908 :
2909 54 : ObjectAddressSet(address, TypeRelationId, domainoid);
2910 :
2911 : /* Clean up */
2912 54 : table_close(rel, RowExclusiveLock);
2913 :
2914 54 : return address;
2915 : }
2916 :
2917 : /*
2918 : * AlterDomainAddConstraint
2919 : *
2920 : * Implements the ALTER DOMAIN .. ADD CONSTRAINT statement.
2921 : */
2922 : ObjectAddress
2923 174 : AlterDomainAddConstraint(List *names, Node *newConstraint,
2924 : ObjectAddress *constrAddr)
2925 : {
2926 : TypeName *typename;
2927 : Oid domainoid;
2928 : Relation typrel;
2929 : HeapTuple tup;
2930 : Form_pg_type typTup;
2931 : Constraint *constr;
2932 : char *ccbin;
2933 174 : ObjectAddress address = InvalidObjectAddress;
2934 :
2935 : /* Make a TypeName so we can use standard type lookup machinery */
2936 174 : typename = makeTypeNameFromNameList(names);
2937 174 : domainoid = typenameTypeId(NULL, typename);
2938 :
2939 : /* Look up the domain in the type table */
2940 174 : typrel = table_open(TypeRelationId, RowExclusiveLock);
2941 :
2942 174 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2943 174 : if (!HeapTupleIsValid(tup))
2944 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2945 174 : typTup = (Form_pg_type) GETSTRUCT(tup);
2946 :
2947 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2948 174 : checkDomainOwner(tup);
2949 :
2950 174 : if (!IsA(newConstraint, Constraint))
2951 0 : elog(ERROR, "unrecognized node type: %d",
2952 : (int) nodeTag(newConstraint));
2953 :
2954 174 : constr = (Constraint *) newConstraint;
2955 :
2956 : /* enforced by parser */
2957 : Assert(constr->contype == CONSTR_CHECK || constr->contype == CONSTR_NOTNULL);
2958 :
2959 174 : if (constr->contype == CONSTR_CHECK)
2960 : {
2961 : /*
2962 : * First, process the constraint expression and add an entry to
2963 : * pg_constraint.
2964 : */
2965 :
2966 144 : ccbin = domainAddCheckConstraint(domainoid, typTup->typnamespace,
2967 : typTup->typbasetype, typTup->typtypmod,
2968 144 : constr, NameStr(typTup->typname), constrAddr);
2969 :
2970 :
2971 : /*
2972 : * If requested to validate the constraint, test all values stored in
2973 : * the attributes based on the domain the constraint is being added
2974 : * to.
2975 : */
2976 138 : if (!constr->skip_validation)
2977 132 : validateDomainCheckConstraint(domainoid, ccbin);
2978 :
2979 : /*
2980 : * We must send out an sinval message for the domain, to ensure that
2981 : * any dependent plans get rebuilt. Since this command doesn't change
2982 : * the domain's pg_type row, that won't happen automatically; do it
2983 : * manually.
2984 : */
2985 78 : CacheInvalidateHeapTuple(typrel, tup, NULL);
2986 : }
2987 30 : else if (constr->contype == CONSTR_NOTNULL)
2988 : {
2989 : /* Is the domain already set NOT NULL? */
2990 30 : if (typTup->typnotnull)
2991 : {
2992 6 : table_close(typrel, RowExclusiveLock);
2993 6 : return address;
2994 : }
2995 24 : domainAddNotNullConstraint(domainoid, typTup->typnamespace,
2996 : typTup->typbasetype, typTup->typtypmod,
2997 24 : constr, NameStr(typTup->typname), constrAddr);
2998 :
2999 24 : if (!constr->skip_validation)
3000 24 : validateDomainNotNullConstraint(domainoid);
3001 :
3002 12 : typTup->typnotnull = true;
3003 12 : CatalogTupleUpdate(typrel, &tup->t_self, tup);
3004 : }
3005 :
3006 90 : ObjectAddressSet(address, TypeRelationId, domainoid);
3007 :
3008 : /* Clean up */
3009 90 : table_close(typrel, RowExclusiveLock);
3010 :
3011 90 : return address;
3012 : }
3013 :
3014 : /*
3015 : * AlterDomainValidateConstraint
3016 : *
3017 : * Implements the ALTER DOMAIN .. VALIDATE CONSTRAINT statement.
3018 : */
3019 : ObjectAddress
3020 12 : AlterDomainValidateConstraint(List *names, const char *constrName)
3021 : {
3022 : TypeName *typename;
3023 : Oid domainoid;
3024 : Relation typrel;
3025 : Relation conrel;
3026 : HeapTuple tup;
3027 : Form_pg_constraint con;
3028 : Form_pg_constraint copy_con;
3029 : char *conbin;
3030 : SysScanDesc scan;
3031 : Datum val;
3032 : HeapTuple tuple;
3033 : HeapTuple copyTuple;
3034 : ScanKeyData skey[3];
3035 : ObjectAddress address;
3036 :
3037 : /* Make a TypeName so we can use standard type lookup machinery */
3038 12 : typename = makeTypeNameFromNameList(names);
3039 12 : domainoid = typenameTypeId(NULL, typename);
3040 :
3041 : /* Look up the domain in the type table */
3042 12 : typrel = table_open(TypeRelationId, AccessShareLock);
3043 :
3044 12 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(domainoid));
3045 12 : if (!HeapTupleIsValid(tup))
3046 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
3047 :
3048 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
3049 12 : checkDomainOwner(tup);
3050 :
3051 : /*
3052 : * Find and check the target constraint
3053 : */
3054 12 : conrel = table_open(ConstraintRelationId, RowExclusiveLock);
3055 :
3056 12 : ScanKeyInit(&skey[0],
3057 : Anum_pg_constraint_conrelid,
3058 : BTEqualStrategyNumber, F_OIDEQ,
3059 : ObjectIdGetDatum(InvalidOid));
3060 12 : ScanKeyInit(&skey[1],
3061 : Anum_pg_constraint_contypid,
3062 : BTEqualStrategyNumber, F_OIDEQ,
3063 : ObjectIdGetDatum(domainoid));
3064 12 : ScanKeyInit(&skey[2],
3065 : Anum_pg_constraint_conname,
3066 : BTEqualStrategyNumber, F_NAMEEQ,
3067 : CStringGetDatum(constrName));
3068 :
3069 12 : scan = systable_beginscan(conrel, ConstraintRelidTypidNameIndexId, true,
3070 : NULL, 3, skey);
3071 :
3072 : /* There can be at most one matching row */
3073 12 : if (!HeapTupleIsValid(tuple = systable_getnext(scan)))
3074 0 : ereport(ERROR,
3075 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3076 : errmsg("constraint \"%s\" of domain \"%s\" does not exist",
3077 : constrName, TypeNameToString(typename))));
3078 :
3079 12 : con = (Form_pg_constraint) GETSTRUCT(tuple);
3080 12 : if (con->contype != CONSTRAINT_CHECK)
3081 0 : ereport(ERROR,
3082 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3083 : errmsg("constraint \"%s\" of domain \"%s\" is not a check constraint",
3084 : constrName, TypeNameToString(typename))));
3085 :
3086 12 : val = SysCacheGetAttrNotNull(CONSTROID, tuple, Anum_pg_constraint_conbin);
3087 12 : conbin = TextDatumGetCString(val);
3088 :
3089 12 : validateDomainCheckConstraint(domainoid, conbin);
3090 :
3091 : /*
3092 : * Now update the catalog, while we have the door open.
3093 : */
3094 6 : copyTuple = heap_copytuple(tuple);
3095 6 : copy_con = (Form_pg_constraint) GETSTRUCT(copyTuple);
3096 6 : copy_con->convalidated = true;
3097 6 : CatalogTupleUpdate(conrel, ©Tuple->t_self, copyTuple);
3098 :
3099 6 : InvokeObjectPostAlterHook(ConstraintRelationId, con->oid, 0);
3100 :
3101 6 : ObjectAddressSet(address, TypeRelationId, domainoid);
3102 :
3103 6 : heap_freetuple(copyTuple);
3104 :
3105 6 : systable_endscan(scan);
3106 :
3107 6 : table_close(typrel, AccessShareLock);
3108 6 : table_close(conrel, RowExclusiveLock);
3109 :
3110 6 : ReleaseSysCache(tup);
3111 :
3112 6 : return address;
3113 : }
3114 :
3115 : /*
3116 : * Verify that all columns currently using the domain are not null.
3117 : */
3118 : static void
3119 48 : validateDomainNotNullConstraint(Oid domainoid)
3120 : {
3121 : List *rels;
3122 : ListCell *rt;
3123 :
3124 : /* Fetch relation list with attributes based on this domain */
3125 : /* ShareLock is sufficient to prevent concurrent data changes */
3126 :
3127 48 : rels = get_rels_with_domain(domainoid, ShareLock);
3128 :
3129 66 : foreach(rt, rels)
3130 : {
3131 42 : RelToCheck *rtc = (RelToCheck *) lfirst(rt);
3132 42 : Relation testrel = rtc->rel;
3133 42 : TupleDesc tupdesc = RelationGetDescr(testrel);
3134 : TupleTableSlot *slot;
3135 : TableScanDesc scan;
3136 : Snapshot snapshot;
3137 :
3138 : /* Scan all tuples in this relation */
3139 42 : snapshot = RegisterSnapshot(GetLatestSnapshot());
3140 42 : scan = table_beginscan(testrel, snapshot, 0, NULL);
3141 42 : slot = table_slot_create(testrel, NULL);
3142 60 : while (table_scan_getnextslot(scan, ForwardScanDirection, slot))
3143 : {
3144 : int i;
3145 :
3146 : /* Test attributes that are of the domain */
3147 90 : for (i = 0; i < rtc->natts; i++)
3148 : {
3149 72 : int attnum = rtc->atts[i];
3150 72 : Form_pg_attribute attr = TupleDescAttr(tupdesc, attnum - 1);
3151 :
3152 72 : if (slot_attisnull(slot, attnum))
3153 : {
3154 : /*
3155 : * In principle the auxiliary information for this error
3156 : * should be errdatatype(), but errtablecol() seems
3157 : * considerably more useful in practice. Since this code
3158 : * only executes in an ALTER DOMAIN command, the client
3159 : * should already know which domain is in question.
3160 : */
3161 24 : ereport(ERROR,
3162 : (errcode(ERRCODE_NOT_NULL_VIOLATION),
3163 : errmsg("column \"%s\" of table \"%s\" contains null values",
3164 : NameStr(attr->attname),
3165 : RelationGetRelationName(testrel)),
3166 : errtablecol(testrel, attnum)));
3167 : }
3168 : }
3169 : }
3170 18 : ExecDropSingleTupleTableSlot(slot);
3171 18 : table_endscan(scan);
3172 18 : UnregisterSnapshot(snapshot);
3173 :
3174 : /* Close each rel after processing, but keep lock */
3175 18 : table_close(testrel, NoLock);
3176 : }
3177 24 : }
3178 :
3179 : /*
3180 : * Verify that all columns currently using the domain satisfy the given check
3181 : * constraint expression.
3182 : */
3183 : static void
3184 144 : validateDomainCheckConstraint(Oid domainoid, const char *ccbin)
3185 : {
3186 144 : Expr *expr = (Expr *) stringToNode(ccbin);
3187 : List *rels;
3188 : ListCell *rt;
3189 : EState *estate;
3190 : ExprContext *econtext;
3191 : ExprState *exprstate;
3192 :
3193 : /* Need an EState to run ExecEvalExpr */
3194 144 : estate = CreateExecutorState();
3195 144 : econtext = GetPerTupleExprContext(estate);
3196 :
3197 : /* build execution state for expr */
3198 144 : exprstate = ExecPrepareExpr(expr, estate);
3199 :
3200 : /* Fetch relation list with attributes based on this domain */
3201 : /* ShareLock is sufficient to prevent concurrent data changes */
3202 :
3203 144 : rels = get_rels_with_domain(domainoid, ShareLock);
3204 :
3205 150 : foreach(rt, rels)
3206 : {
3207 72 : RelToCheck *rtc = (RelToCheck *) lfirst(rt);
3208 72 : Relation testrel = rtc->rel;
3209 72 : TupleDesc tupdesc = RelationGetDescr(testrel);
3210 : TupleTableSlot *slot;
3211 : TableScanDesc scan;
3212 : Snapshot snapshot;
3213 :
3214 : /* Scan all tuples in this relation */
3215 72 : snapshot = RegisterSnapshot(GetLatestSnapshot());
3216 72 : scan = table_beginscan(testrel, snapshot, 0, NULL);
3217 72 : slot = table_slot_create(testrel, NULL);
3218 168 : while (table_scan_getnextslot(scan, ForwardScanDirection, slot))
3219 : {
3220 : int i;
3221 :
3222 : /* Test attributes that are of the domain */
3223 228 : for (i = 0; i < rtc->natts; i++)
3224 : {
3225 132 : int attnum = rtc->atts[i];
3226 : Datum d;
3227 : bool isNull;
3228 : Datum conResult;
3229 132 : Form_pg_attribute attr = TupleDescAttr(tupdesc, attnum - 1);
3230 :
3231 132 : d = slot_getattr(slot, attnum, &isNull);
3232 :
3233 132 : econtext->domainValue_datum = d;
3234 132 : econtext->domainValue_isNull = isNull;
3235 :
3236 132 : conResult = ExecEvalExprSwitchContext(exprstate,
3237 : econtext,
3238 : &isNull);
3239 :
3240 132 : if (!isNull && !DatumGetBool(conResult))
3241 : {
3242 : /*
3243 : * In principle the auxiliary information for this error
3244 : * should be errdomainconstraint(), but errtablecol()
3245 : * seems considerably more useful in practice. Since this
3246 : * code only executes in an ALTER DOMAIN command, the
3247 : * client should already know which domain is in question,
3248 : * and which constraint too.
3249 : */
3250 36 : ereport(ERROR,
3251 : (errcode(ERRCODE_CHECK_VIOLATION),
3252 : errmsg("column \"%s\" of table \"%s\" contains values that violate the new constraint",
3253 : NameStr(attr->attname),
3254 : RelationGetRelationName(testrel)),
3255 : errtablecol(testrel, attnum)));
3256 : }
3257 : }
3258 :
3259 96 : ResetExprContext(econtext);
3260 : }
3261 36 : ExecDropSingleTupleTableSlot(slot);
3262 36 : table_endscan(scan);
3263 36 : UnregisterSnapshot(snapshot);
3264 :
3265 : /* Hold relation lock till commit (XXX bad for concurrency) */
3266 36 : table_close(testrel, NoLock);
3267 : }
3268 :
3269 78 : FreeExecutorState(estate);
3270 78 : }
3271 :
3272 : /*
3273 : * get_rels_with_domain
3274 : *
3275 : * Fetch all relations / attributes which are using the domain
3276 : *
3277 : * The result is a list of RelToCheck structs, one for each distinct
3278 : * relation, each containing one or more attribute numbers that are of
3279 : * the domain type. We have opened each rel and acquired the specified lock
3280 : * type on it.
3281 : *
3282 : * We support nested domains by including attributes that are of derived
3283 : * domain types. Current callers do not need to distinguish between attributes
3284 : * that are of exactly the given domain and those that are of derived domains.
3285 : *
3286 : * XXX this is completely broken because there is no way to lock the domain
3287 : * to prevent columns from being added or dropped while our command runs.
3288 : * We can partially protect against column drops by locking relations as we
3289 : * come across them, but there is still a race condition (the window between
3290 : * seeing a pg_depend entry and acquiring lock on the relation it references).
3291 : * Also, holding locks on all these relations simultaneously creates a non-
3292 : * trivial risk of deadlock. We can minimize but not eliminate the deadlock
3293 : * risk by using the weakest suitable lock (ShareLock for most callers).
3294 : *
3295 : * XXX the API for this is not sufficient to support checking domain values
3296 : * that are inside container types, such as composite types, arrays, or
3297 : * ranges. Currently we just error out if a container type containing the
3298 : * target domain is stored anywhere.
3299 : *
3300 : * Generally used for retrieving a list of tests when adding
3301 : * new constraints to a domain.
3302 : */
3303 : static List *
3304 204 : get_rels_with_domain(Oid domainOid, LOCKMODE lockmode)
3305 : {
3306 204 : List *result = NIL;
3307 204 : char *domainTypeName = format_type_be(domainOid);
3308 : Relation depRel;
3309 : ScanKeyData key[2];
3310 : SysScanDesc depScan;
3311 : HeapTuple depTup;
3312 :
3313 : Assert(lockmode != NoLock);
3314 :
3315 : /* since this function recurses, it could be driven to stack overflow */
3316 204 : check_stack_depth();
3317 :
3318 : /*
3319 : * We scan pg_depend to find those things that depend on the domain. (We
3320 : * assume we can ignore refobjsubid for a domain.)
3321 : */
3322 204 : depRel = table_open(DependRelationId, AccessShareLock);
3323 :
3324 204 : ScanKeyInit(&key[0],
3325 : Anum_pg_depend_refclassid,
3326 : BTEqualStrategyNumber, F_OIDEQ,
3327 : ObjectIdGetDatum(TypeRelationId));
3328 204 : ScanKeyInit(&key[1],
3329 : Anum_pg_depend_refobjid,
3330 : BTEqualStrategyNumber, F_OIDEQ,
3331 : ObjectIdGetDatum(domainOid));
3332 :
3333 204 : depScan = systable_beginscan(depRel, DependReferenceIndexId, true,
3334 : NULL, 2, key);
3335 :
3336 692 : while (HeapTupleIsValid(depTup = systable_getnext(depScan)))
3337 : {
3338 518 : Form_pg_depend pg_depend = (Form_pg_depend) GETSTRUCT(depTup);
3339 518 : RelToCheck *rtc = NULL;
3340 : ListCell *rellist;
3341 : Form_pg_attribute pg_att;
3342 : int ptr;
3343 :
3344 : /* Check for directly dependent types */
3345 518 : if (pg_depend->classid == TypeRelationId)
3346 : {
3347 222 : if (get_typtype(pg_depend->objid) == TYPTYPE_DOMAIN)
3348 : {
3349 : /*
3350 : * This is a sub-domain, so recursively add dependent columns
3351 : * to the output list. This is a bit inefficient since we may
3352 : * fail to combine RelToCheck entries when attributes of the
3353 : * same rel have different derived domain types, but it's
3354 : * probably not worth improving.
3355 : */
3356 12 : result = list_concat(result,
3357 12 : get_rels_with_domain(pg_depend->objid,
3358 : lockmode));
3359 : }
3360 : else
3361 : {
3362 : /*
3363 : * Otherwise, it is some container type using the domain, so
3364 : * fail if there are any columns of this type.
3365 : */
3366 210 : find_composite_type_dependencies(pg_depend->objid,
3367 : NULL,
3368 : domainTypeName);
3369 : }
3370 216 : continue;
3371 : }
3372 :
3373 : /* Else, ignore dependees that aren't user columns of relations */
3374 : /* (we assume system columns are never of domain types) */
3375 296 : if (pg_depend->classid != RelationRelationId ||
3376 216 : pg_depend->objsubid <= 0)
3377 80 : continue;
3378 :
3379 : /* See if we already have an entry for this relation */
3380 216 : foreach(rellist, result)
3381 : {
3382 42 : RelToCheck *rt = (RelToCheck *) lfirst(rellist);
3383 :
3384 42 : if (RelationGetRelid(rt->rel) == pg_depend->objid)
3385 : {
3386 42 : rtc = rt;
3387 42 : break;
3388 : }
3389 : }
3390 :
3391 216 : if (rtc == NULL)
3392 : {
3393 : /* First attribute found for this relation */
3394 : Relation rel;
3395 :
3396 : /* Acquire requested lock on relation */
3397 174 : rel = relation_open(pg_depend->objid, lockmode);
3398 :
3399 : /*
3400 : * Check to see if rowtype is stored anyplace as a composite-type
3401 : * column; if so we have to fail, for now anyway.
3402 : */
3403 174 : if (OidIsValid(rel->rd_rel->reltype))
3404 174 : find_composite_type_dependencies(rel->rd_rel->reltype,
3405 : NULL,
3406 : domainTypeName);
3407 :
3408 : /*
3409 : * Otherwise, we can ignore relations except those with both
3410 : * storage and user-chosen column types.
3411 : *
3412 : * XXX If an index-only scan could satisfy "col::some_domain" from
3413 : * a suitable expression index, this should also check expression
3414 : * index columns.
3415 : */
3416 150 : if (rel->rd_rel->relkind != RELKIND_RELATION &&
3417 36 : rel->rd_rel->relkind != RELKIND_MATVIEW)
3418 : {
3419 36 : relation_close(rel, lockmode);
3420 36 : continue;
3421 : }
3422 :
3423 : /* Build the RelToCheck entry with enough space for all atts */
3424 114 : rtc = (RelToCheck *) palloc(sizeof(RelToCheck));
3425 114 : rtc->rel = rel;
3426 114 : rtc->natts = 0;
3427 114 : rtc->atts = (int *) palloc(sizeof(int) * RelationGetNumberOfAttributes(rel));
3428 114 : result = lappend(result, rtc);
3429 : }
3430 :
3431 : /*
3432 : * Confirm column has not been dropped, and is of the expected type.
3433 : * This defends against an ALTER DROP COLUMN occurring just before we
3434 : * acquired lock ... but if the whole table were dropped, we'd still
3435 : * have a problem.
3436 : */
3437 156 : if (pg_depend->objsubid > RelationGetNumberOfAttributes(rtc->rel))
3438 0 : continue;
3439 156 : pg_att = TupleDescAttr(rtc->rel->rd_att, pg_depend->objsubid - 1);
3440 156 : if (pg_att->attisdropped || pg_att->atttypid != domainOid)
3441 0 : continue;
3442 :
3443 : /*
3444 : * Okay, add column to result. We store the columns in column-number
3445 : * order; this is just a hack to improve predictability of regression
3446 : * test output ...
3447 : */
3448 : Assert(rtc->natts < RelationGetNumberOfAttributes(rtc->rel));
3449 :
3450 156 : ptr = rtc->natts++;
3451 156 : while (ptr > 0 && rtc->atts[ptr - 1] > pg_depend->objsubid)
3452 : {
3453 0 : rtc->atts[ptr] = rtc->atts[ptr - 1];
3454 0 : ptr--;
3455 : }
3456 156 : rtc->atts[ptr] = pg_depend->objsubid;
3457 : }
3458 :
3459 174 : systable_endscan(depScan);
3460 :
3461 174 : relation_close(depRel, AccessShareLock);
3462 :
3463 174 : return result;
3464 : }
3465 :
3466 : /*
3467 : * checkDomainOwner
3468 : *
3469 : * Check that the type is actually a domain and that the current user
3470 : * has permission to do ALTER DOMAIN on it. Throw an error if not.
3471 : */
3472 : void
3473 302 : checkDomainOwner(HeapTuple tup)
3474 : {
3475 302 : Form_pg_type typTup = (Form_pg_type) GETSTRUCT(tup);
3476 :
3477 : /* Check that this is actually a domain */
3478 302 : if (typTup->typtype != TYPTYPE_DOMAIN)
3479 0 : ereport(ERROR,
3480 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3481 : errmsg("%s is not a domain",
3482 : format_type_be(typTup->oid))));
3483 :
3484 : /* Permission check: must own type */
3485 302 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
3486 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
3487 302 : }
3488 :
3489 : /*
3490 : * domainAddCheckConstraint - code shared between CREATE and ALTER DOMAIN
3491 : */
3492 : static char *
3493 658 : domainAddCheckConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
3494 : int typMod, Constraint *constr,
3495 : const char *domainName, ObjectAddress *constrAddr)
3496 : {
3497 : Node *expr;
3498 : char *ccbin;
3499 : ParseState *pstate;
3500 : CoerceToDomainValue *domVal;
3501 : Oid ccoid;
3502 :
3503 : Assert(constr->contype == CONSTR_CHECK);
3504 :
3505 : /*
3506 : * Assign or validate constraint name
3507 : */
3508 658 : if (constr->conname)
3509 : {
3510 364 : if (ConstraintNameIsUsed(CONSTRAINT_DOMAIN,
3511 : domainOid,
3512 364 : constr->conname))
3513 0 : ereport(ERROR,
3514 : (errcode(ERRCODE_DUPLICATE_OBJECT),
3515 : errmsg("constraint \"%s\" for domain \"%s\" already exists",
3516 : constr->conname, domainName)));
3517 : }
3518 : else
3519 294 : constr->conname = ChooseConstraintName(domainName,
3520 : NULL,
3521 : "check",
3522 : domainNamespace,
3523 : NIL);
3524 :
3525 : /*
3526 : * Convert the A_EXPR in raw_expr into an EXPR
3527 : */
3528 658 : pstate = make_parsestate(NULL);
3529 :
3530 : /*
3531 : * Set up a CoerceToDomainValue to represent the occurrence of VALUE in
3532 : * the expression. Note that it will appear to have the type of the base
3533 : * type, not the domain. This seems correct since within the check
3534 : * expression, we should not assume the input value can be considered a
3535 : * member of the domain.
3536 : */
3537 658 : domVal = makeNode(CoerceToDomainValue);
3538 658 : domVal->typeId = baseTypeOid;
3539 658 : domVal->typeMod = typMod;
3540 658 : domVal->collation = get_typcollation(baseTypeOid);
3541 658 : domVal->location = -1; /* will be set when/if used */
3542 :
3543 658 : pstate->p_pre_columnref_hook = replace_domain_constraint_value;
3544 658 : pstate->p_ref_hook_state = domVal;
3545 :
3546 658 : expr = transformExpr(pstate, constr->raw_expr, EXPR_KIND_DOMAIN_CHECK);
3547 :
3548 : /*
3549 : * Make sure it yields a boolean result.
3550 : */
3551 652 : expr = coerce_to_boolean(pstate, expr, "CHECK");
3552 :
3553 : /*
3554 : * Fix up collation information.
3555 : */
3556 652 : assign_expr_collations(pstate, expr);
3557 :
3558 : /*
3559 : * Domains don't allow variables (this is probably dead code now that
3560 : * add_missing_from is history, but let's be sure).
3561 : */
3562 1304 : if (pstate->p_rtable != NIL ||
3563 652 : contain_var_clause(expr))
3564 0 : ereport(ERROR,
3565 : (errcode(ERRCODE_INVALID_COLUMN_REFERENCE),
3566 : errmsg("cannot use table references in domain check constraint")));
3567 :
3568 : /*
3569 : * Convert to string form for storage.
3570 : */
3571 652 : ccbin = nodeToString(expr);
3572 :
3573 : /*
3574 : * Store the constraint in pg_constraint
3575 : */
3576 : ccoid =
3577 652 : CreateConstraintEntry(constr->conname, /* Constraint Name */
3578 : domainNamespace, /* namespace */
3579 : CONSTRAINT_CHECK, /* Constraint Type */
3580 : false, /* Is Deferrable */
3581 : false, /* Is Deferred */
3582 : true, /* Is Enforced */
3583 652 : !constr->skip_validation, /* Is Validated */
3584 : InvalidOid, /* no parent constraint */
3585 : InvalidOid, /* not a relation constraint */
3586 : NULL,
3587 : 0,
3588 : 0,
3589 : domainOid, /* domain constraint */
3590 : InvalidOid, /* no associated index */
3591 : InvalidOid, /* Foreign key fields */
3592 : NULL,
3593 : NULL,
3594 : NULL,
3595 : NULL,
3596 : 0,
3597 : ' ',
3598 : ' ',
3599 : NULL,
3600 : 0,
3601 : ' ',
3602 : NULL, /* not an exclusion constraint */
3603 : expr, /* Tree form of check constraint */
3604 : ccbin, /* Binary form of check constraint */
3605 : true, /* is local */
3606 : 0, /* inhcount */
3607 : false, /* connoinherit */
3608 : false, /* conperiod */
3609 652 : false); /* is_internal */
3610 652 : if (constrAddr)
3611 130 : ObjectAddressSet(*constrAddr, ConstraintRelationId, ccoid);
3612 :
3613 : /*
3614 : * Return the compiled constraint expression so the calling routine can
3615 : * perform any additional required tests.
3616 : */
3617 652 : return ccbin;
3618 : }
3619 :
3620 : /* Parser pre_columnref_hook for domain CHECK constraint parsing */
3621 : static Node *
3622 762 : replace_domain_constraint_value(ParseState *pstate, ColumnRef *cref)
3623 : {
3624 : /*
3625 : * Check for a reference to "value", and if that's what it is, replace
3626 : * with a CoerceToDomainValue as prepared for us by
3627 : * domainAddCheckConstraint. (We handle VALUE as a name, not a keyword, to
3628 : * avoid breaking a lot of applications that have used VALUE as a column
3629 : * name in the past.)
3630 : */
3631 762 : if (list_length(cref->fields) == 1)
3632 : {
3633 762 : Node *field1 = (Node *) linitial(cref->fields);
3634 : char *colname;
3635 :
3636 762 : colname = strVal(field1);
3637 762 : if (strcmp(colname, "value") == 0)
3638 : {
3639 762 : CoerceToDomainValue *domVal = copyObject(pstate->p_ref_hook_state);
3640 :
3641 : /* Propagate location knowledge, if any */
3642 762 : domVal->location = cref->location;
3643 762 : return (Node *) domVal;
3644 : }
3645 : }
3646 0 : return NULL;
3647 : }
3648 :
3649 : /*
3650 : * domainAddNotNullConstraint - code shared between CREATE and ALTER DOMAIN
3651 : */
3652 : static void
3653 128 : domainAddNotNullConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
3654 : int typMod, Constraint *constr,
3655 : const char *domainName, ObjectAddress *constrAddr)
3656 : {
3657 : Oid ccoid;
3658 :
3659 : Assert(constr->contype == CONSTR_NOTNULL);
3660 :
3661 : /*
3662 : * Assign or validate constraint name
3663 : */
3664 128 : if (constr->conname)
3665 : {
3666 12 : if (ConstraintNameIsUsed(CONSTRAINT_DOMAIN,
3667 : domainOid,
3668 12 : constr->conname))
3669 0 : ereport(ERROR,
3670 : (errcode(ERRCODE_DUPLICATE_OBJECT),
3671 : errmsg("constraint \"%s\" for domain \"%s\" already exists",
3672 : constr->conname, domainName)));
3673 : }
3674 : else
3675 116 : constr->conname = ChooseConstraintName(domainName,
3676 : NULL,
3677 : "not_null",
3678 : domainNamespace,
3679 : NIL);
3680 :
3681 : /*
3682 : * Store the constraint in pg_constraint
3683 : */
3684 : ccoid =
3685 128 : CreateConstraintEntry(constr->conname, /* Constraint Name */
3686 : domainNamespace, /* namespace */
3687 : CONSTRAINT_NOTNULL, /* Constraint Type */
3688 : false, /* Is Deferrable */
3689 : false, /* Is Deferred */
3690 : true, /* Is Enforced */
3691 128 : !constr->skip_validation, /* Is Validated */
3692 : InvalidOid, /* no parent constraint */
3693 : InvalidOid, /* not a relation constraint */
3694 : NULL,
3695 : 0,
3696 : 0,
3697 : domainOid, /* domain constraint */
3698 : InvalidOid, /* no associated index */
3699 : InvalidOid, /* Foreign key fields */
3700 : NULL,
3701 : NULL,
3702 : NULL,
3703 : NULL,
3704 : 0,
3705 : ' ',
3706 : ' ',
3707 : NULL,
3708 : 0,
3709 : ' ',
3710 : NULL, /* not an exclusion constraint */
3711 : NULL,
3712 : NULL,
3713 : true, /* is local */
3714 : 0, /* inhcount */
3715 : false, /* connoinherit */
3716 : false, /* conperiod */
3717 128 : false); /* is_internal */
3718 :
3719 128 : if (constrAddr)
3720 24 : ObjectAddressSet(*constrAddr, ConstraintRelationId, ccoid);
3721 128 : }
3722 :
3723 :
3724 : /*
3725 : * Execute ALTER TYPE RENAME
3726 : */
3727 : ObjectAddress
3728 32 : RenameType(RenameStmt *stmt)
3729 : {
3730 32 : List *names = castNode(List, stmt->object);
3731 32 : const char *newTypeName = stmt->newname;
3732 : TypeName *typename;
3733 : Oid typeOid;
3734 : Relation rel;
3735 : HeapTuple tup;
3736 : Form_pg_type typTup;
3737 : ObjectAddress address;
3738 :
3739 : /* Make a TypeName so we can use standard type lookup machinery */
3740 32 : typename = makeTypeNameFromNameList(names);
3741 32 : typeOid = typenameTypeId(NULL, typename);
3742 :
3743 : /* Look up the type in the type table */
3744 32 : rel = table_open(TypeRelationId, RowExclusiveLock);
3745 :
3746 32 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
3747 32 : if (!HeapTupleIsValid(tup))
3748 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
3749 32 : typTup = (Form_pg_type) GETSTRUCT(tup);
3750 :
3751 : /* check permissions on type */
3752 32 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
3753 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
3754 :
3755 : /* ALTER DOMAIN used on a non-domain? */
3756 32 : if (stmt->renameType == OBJECT_DOMAIN && typTup->typtype != TYPTYPE_DOMAIN)
3757 0 : ereport(ERROR,
3758 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3759 : errmsg("%s is not a domain",
3760 : format_type_be(typeOid))));
3761 :
3762 : /*
3763 : * If it's a composite type, we need to check that it really is a
3764 : * free-standing composite type, and not a table's rowtype. We want people
3765 : * to use ALTER TABLE not ALTER TYPE for that case.
3766 : */
3767 34 : if (typTup->typtype == TYPTYPE_COMPOSITE &&
3768 2 : get_rel_relkind(typTup->typrelid) != RELKIND_COMPOSITE_TYPE)
3769 0 : ereport(ERROR,
3770 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3771 : errmsg("%s is a table's row type",
3772 : format_type_be(typeOid)),
3773 : /* translator: %s is an SQL ALTER command */
3774 : errhint("Use %s instead.",
3775 : "ALTER TABLE")));
3776 :
3777 : /* don't allow direct alteration of array types, either */
3778 32 : if (IsTrueArrayType(typTup))
3779 0 : ereport(ERROR,
3780 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3781 : errmsg("cannot alter array type %s",
3782 : format_type_be(typeOid)),
3783 : errhint("You can alter type %s, which will alter the array type as well.",
3784 : format_type_be(typTup->typelem))));
3785 :
3786 : /* we do allow separate renaming of multirange types, though */
3787 :
3788 : /*
3789 : * If type is composite we need to rename associated pg_class entry too.
3790 : * RenameRelationInternal will call RenameTypeInternal automatically.
3791 : */
3792 32 : if (typTup->typtype == TYPTYPE_COMPOSITE)
3793 2 : RenameRelationInternal(typTup->typrelid, newTypeName, false, false);
3794 : else
3795 30 : RenameTypeInternal(typeOid, newTypeName,
3796 : typTup->typnamespace);
3797 :
3798 32 : ObjectAddressSet(address, TypeRelationId, typeOid);
3799 : /* Clean up */
3800 32 : table_close(rel, RowExclusiveLock);
3801 :
3802 32 : return address;
3803 : }
3804 :
3805 : /*
3806 : * Change the owner of a type.
3807 : */
3808 : ObjectAddress
3809 126 : AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype)
3810 : {
3811 : TypeName *typename;
3812 : Oid typeOid;
3813 : Relation rel;
3814 : HeapTuple tup;
3815 : HeapTuple newtup;
3816 : Form_pg_type typTup;
3817 : AclResult aclresult;
3818 : ObjectAddress address;
3819 :
3820 126 : rel = table_open(TypeRelationId, RowExclusiveLock);
3821 :
3822 : /* Make a TypeName so we can use standard type lookup machinery */
3823 126 : typename = makeTypeNameFromNameList(names);
3824 :
3825 : /* Use LookupTypeName here so that shell types can be processed */
3826 126 : tup = LookupTypeName(NULL, typename, NULL, false);
3827 126 : if (tup == NULL)
3828 0 : ereport(ERROR,
3829 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3830 : errmsg("type \"%s\" does not exist",
3831 : TypeNameToString(typename))));
3832 126 : typeOid = typeTypeId(tup);
3833 :
3834 : /* Copy the syscache entry so we can scribble on it below */
3835 126 : newtup = heap_copytuple(tup);
3836 126 : ReleaseSysCache(tup);
3837 126 : tup = newtup;
3838 126 : typTup = (Form_pg_type) GETSTRUCT(tup);
3839 :
3840 : /* Don't allow ALTER DOMAIN on a type */
3841 126 : if (objecttype == OBJECT_DOMAIN && typTup->typtype != TYPTYPE_DOMAIN)
3842 0 : ereport(ERROR,
3843 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3844 : errmsg("%s is not a domain",
3845 : format_type_be(typeOid))));
3846 :
3847 : /*
3848 : * If it's a composite type, we need to check that it really is a
3849 : * free-standing composite type, and not a table's rowtype. We want people
3850 : * to use ALTER TABLE not ALTER TYPE for that case.
3851 : */
3852 158 : if (typTup->typtype == TYPTYPE_COMPOSITE &&
3853 32 : get_rel_relkind(typTup->typrelid) != RELKIND_COMPOSITE_TYPE)
3854 0 : ereport(ERROR,
3855 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3856 : errmsg("%s is a table's row type",
3857 : format_type_be(typeOid)),
3858 : /* translator: %s is an SQL ALTER command */
3859 : errhint("Use %s instead.",
3860 : "ALTER TABLE")));
3861 :
3862 : /* don't allow direct alteration of array types, either */
3863 126 : if (IsTrueArrayType(typTup))
3864 0 : ereport(ERROR,
3865 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3866 : errmsg("cannot alter array type %s",
3867 : format_type_be(typeOid)),
3868 : errhint("You can alter type %s, which will alter the array type as well.",
3869 : format_type_be(typTup->typelem))));
3870 :
3871 : /* don't allow direct alteration of multirange types, either */
3872 126 : if (typTup->typtype == TYPTYPE_MULTIRANGE)
3873 : {
3874 6 : Oid rangetype = get_multirange_range(typeOid);
3875 :
3876 : /* We don't expect get_multirange_range to fail, but cope if so */
3877 6 : ereport(ERROR,
3878 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3879 : errmsg("cannot alter multirange type %s",
3880 : format_type_be(typeOid)),
3881 : OidIsValid(rangetype) ?
3882 : errhint("You can alter type %s, which will alter the multirange type as well.",
3883 : format_type_be(rangetype)) : 0));
3884 : }
3885 :
3886 : /*
3887 : * If the new owner is the same as the existing owner, consider the
3888 : * command to have succeeded. This is for dump restoration purposes.
3889 : */
3890 120 : if (typTup->typowner != newOwnerId)
3891 : {
3892 : /* Superusers can always do it */
3893 6 : if (!superuser())
3894 : {
3895 : /* Otherwise, must be owner of the existing object */
3896 0 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
3897 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
3898 :
3899 : /* Must be able to become new owner */
3900 0 : check_can_set_role(GetUserId(), newOwnerId);
3901 :
3902 : /* New owner must have CREATE privilege on namespace */
3903 0 : aclresult = object_aclcheck(NamespaceRelationId, typTup->typnamespace,
3904 : newOwnerId,
3905 : ACL_CREATE);
3906 0 : if (aclresult != ACLCHECK_OK)
3907 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
3908 0 : get_namespace_name(typTup->typnamespace));
3909 : }
3910 :
3911 6 : AlterTypeOwner_oid(typeOid, newOwnerId, true);
3912 : }
3913 :
3914 120 : ObjectAddressSet(address, TypeRelationId, typeOid);
3915 :
3916 : /* Clean up */
3917 120 : table_close(rel, RowExclusiveLock);
3918 :
3919 120 : return address;
3920 : }
3921 :
3922 : /*
3923 : * AlterTypeOwner_oid - change type owner unconditionally
3924 : *
3925 : * This function recurses to handle dependent types (arrays and multiranges).
3926 : * It invokes any necessary access object hooks. If hasDependEntry is true,
3927 : * this function modifies the pg_shdepend entry appropriately (this should be
3928 : * passed as false only for table rowtypes and dependent types).
3929 : *
3930 : * This is used by ALTER TABLE/TYPE OWNER commands, as well as by REASSIGN
3931 : * OWNED BY. It assumes the caller has done all needed checks.
3932 : */
3933 : void
3934 26 : AlterTypeOwner_oid(Oid typeOid, Oid newOwnerId, bool hasDependEntry)
3935 : {
3936 : Relation rel;
3937 : HeapTuple tup;
3938 : Form_pg_type typTup;
3939 :
3940 26 : rel = table_open(TypeRelationId, RowExclusiveLock);
3941 :
3942 26 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typeOid));
3943 26 : if (!HeapTupleIsValid(tup))
3944 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
3945 26 : typTup = (Form_pg_type) GETSTRUCT(tup);
3946 :
3947 : /*
3948 : * If it's a composite type, invoke ATExecChangeOwner so that we fix up
3949 : * the pg_class entry properly. That will call back to
3950 : * AlterTypeOwnerInternal to take care of the pg_type entry(s).
3951 : */
3952 26 : if (typTup->typtype == TYPTYPE_COMPOSITE)
3953 8 : ATExecChangeOwner(typTup->typrelid, newOwnerId, true, AccessExclusiveLock);
3954 : else
3955 18 : AlterTypeOwnerInternal(typeOid, newOwnerId);
3956 :
3957 : /* Update owner dependency reference */
3958 26 : if (hasDependEntry)
3959 26 : changeDependencyOnOwner(TypeRelationId, typeOid, newOwnerId);
3960 :
3961 26 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
3962 :
3963 26 : ReleaseSysCache(tup);
3964 26 : table_close(rel, RowExclusiveLock);
3965 26 : }
3966 :
3967 : /*
3968 : * AlterTypeOwnerInternal - bare-bones type owner change.
3969 : *
3970 : * This routine simply modifies the owner of a pg_type entry, and recurses
3971 : * to handle any dependent types.
3972 : */
3973 : void
3974 648 : AlterTypeOwnerInternal(Oid typeOid, Oid newOwnerId)
3975 : {
3976 : Relation rel;
3977 : HeapTuple tup;
3978 : Form_pg_type typTup;
3979 : Datum repl_val[Natts_pg_type];
3980 : bool repl_null[Natts_pg_type];
3981 : bool repl_repl[Natts_pg_type];
3982 : Acl *newAcl;
3983 : Datum aclDatum;
3984 : bool isNull;
3985 :
3986 648 : rel = table_open(TypeRelationId, RowExclusiveLock);
3987 :
3988 648 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
3989 648 : if (!HeapTupleIsValid(tup))
3990 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
3991 648 : typTup = (Form_pg_type) GETSTRUCT(tup);
3992 :
3993 648 : memset(repl_null, false, sizeof(repl_null));
3994 648 : memset(repl_repl, false, sizeof(repl_repl));
3995 :
3996 648 : repl_repl[Anum_pg_type_typowner - 1] = true;
3997 648 : repl_val[Anum_pg_type_typowner - 1] = ObjectIdGetDatum(newOwnerId);
3998 :
3999 648 : aclDatum = heap_getattr(tup,
4000 : Anum_pg_type_typacl,
4001 : RelationGetDescr(rel),
4002 : &isNull);
4003 : /* Null ACLs do not require changes */
4004 648 : if (!isNull)
4005 : {
4006 2 : newAcl = aclnewowner(DatumGetAclP(aclDatum),
4007 : typTup->typowner, newOwnerId);
4008 2 : repl_repl[Anum_pg_type_typacl - 1] = true;
4009 2 : repl_val[Anum_pg_type_typacl - 1] = PointerGetDatum(newAcl);
4010 : }
4011 :
4012 648 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), repl_val, repl_null,
4013 : repl_repl);
4014 :
4015 648 : CatalogTupleUpdate(rel, &tup->t_self, tup);
4016 :
4017 : /* If it has an array type, update that too */
4018 648 : if (OidIsValid(typTup->typarray))
4019 324 : AlterTypeOwnerInternal(typTup->typarray, newOwnerId);
4020 :
4021 : /* If it is a range type, update the associated multirange too */
4022 648 : if (typTup->typtype == TYPTYPE_RANGE)
4023 : {
4024 12 : Oid multirange_typeid = get_range_multirange(typeOid);
4025 :
4026 12 : if (!OidIsValid(multirange_typeid))
4027 0 : ereport(ERROR,
4028 : (errcode(ERRCODE_UNDEFINED_OBJECT),
4029 : errmsg("could not find multirange type for data type %s",
4030 : format_type_be(typeOid))));
4031 12 : AlterTypeOwnerInternal(multirange_typeid, newOwnerId);
4032 : }
4033 :
4034 : /* Clean up */
4035 648 : table_close(rel, RowExclusiveLock);
4036 648 : }
4037 :
4038 : /*
4039 : * Execute ALTER TYPE SET SCHEMA
4040 : */
4041 : ObjectAddress
4042 18 : AlterTypeNamespace(List *names, const char *newschema, ObjectType objecttype,
4043 : Oid *oldschema)
4044 : {
4045 : TypeName *typename;
4046 : Oid typeOid;
4047 : Oid nspOid;
4048 : Oid oldNspOid;
4049 : ObjectAddresses *objsMoved;
4050 : ObjectAddress myself;
4051 :
4052 : /* Make a TypeName so we can use standard type lookup machinery */
4053 18 : typename = makeTypeNameFromNameList(names);
4054 18 : typeOid = typenameTypeId(NULL, typename);
4055 :
4056 : /* Don't allow ALTER DOMAIN on a non-domain type */
4057 18 : if (objecttype == OBJECT_DOMAIN && get_typtype(typeOid) != TYPTYPE_DOMAIN)
4058 0 : ereport(ERROR,
4059 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4060 : errmsg("%s is not a domain",
4061 : format_type_be(typeOid))));
4062 :
4063 : /* get schema OID and check its permissions */
4064 18 : nspOid = LookupCreationNamespace(newschema);
4065 :
4066 18 : objsMoved = new_object_addresses();
4067 18 : oldNspOid = AlterTypeNamespace_oid(typeOid, nspOid, false, objsMoved);
4068 18 : free_object_addresses(objsMoved);
4069 :
4070 18 : if (oldschema)
4071 18 : *oldschema = oldNspOid;
4072 :
4073 18 : ObjectAddressSet(myself, TypeRelationId, typeOid);
4074 :
4075 18 : return myself;
4076 : }
4077 :
4078 : /*
4079 : * ALTER TYPE SET SCHEMA, where the caller has already looked up the OIDs
4080 : * of the type and the target schema and checked the schema's privileges.
4081 : *
4082 : * If ignoreDependent is true, we silently ignore dependent types
4083 : * (array types and table rowtypes) rather than raising errors.
4084 : *
4085 : * This entry point is exported for use by AlterObjectNamespace_oid,
4086 : * which doesn't want errors when it passes OIDs of dependent types.
4087 : *
4088 : * Returns the type's old namespace OID, or InvalidOid if we did nothing.
4089 : */
4090 : Oid
4091 34 : AlterTypeNamespace_oid(Oid typeOid, Oid nspOid, bool ignoreDependent,
4092 : ObjectAddresses *objsMoved)
4093 : {
4094 : Oid elemOid;
4095 :
4096 : /* check permissions on type */
4097 34 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
4098 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
4099 :
4100 : /* don't allow direct alteration of array types */
4101 34 : elemOid = get_element_type(typeOid);
4102 34 : if (OidIsValid(elemOid) && get_array_type(elemOid) == typeOid)
4103 : {
4104 8 : if (ignoreDependent)
4105 8 : return InvalidOid;
4106 0 : ereport(ERROR,
4107 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4108 : errmsg("cannot alter array type %s",
4109 : format_type_be(typeOid)),
4110 : errhint("You can alter type %s, which will alter the array type as well.",
4111 : format_type_be(elemOid))));
4112 : }
4113 :
4114 : /* and do the work */
4115 26 : return AlterTypeNamespaceInternal(typeOid, nspOid,
4116 : false, /* isImplicitArray */
4117 : ignoreDependent, /* ignoreDependent */
4118 : true, /* errorOnTableType */
4119 : objsMoved);
4120 : }
4121 :
4122 : /*
4123 : * Move specified type to new namespace.
4124 : *
4125 : * Caller must have already checked privileges.
4126 : *
4127 : * The function automatically recurses to process the type's array type,
4128 : * if any. isImplicitArray should be true only when doing this internal
4129 : * recursion (outside callers must never try to move an array type directly).
4130 : *
4131 : * If ignoreDependent is true, we silently don't process table types.
4132 : *
4133 : * If errorOnTableType is true, the function errors out if the type is
4134 : * a table type. ALTER TABLE has to be used to move a table to a new
4135 : * namespace. (This flag is ignored if ignoreDependent is true.)
4136 : *
4137 : * We also do nothing if the type is already listed in *objsMoved.
4138 : * After a successful move, we add the type to *objsMoved.
4139 : *
4140 : * Returns the type's old namespace OID, or InvalidOid if we did nothing.
4141 : */
4142 : Oid
4143 218 : AlterTypeNamespaceInternal(Oid typeOid, Oid nspOid,
4144 : bool isImplicitArray,
4145 : bool ignoreDependent,
4146 : bool errorOnTableType,
4147 : ObjectAddresses *objsMoved)
4148 : {
4149 : Relation rel;
4150 : HeapTuple tup;
4151 : Form_pg_type typform;
4152 : Oid oldNspOid;
4153 : Oid arrayOid;
4154 : bool isCompositeType;
4155 : ObjectAddress thisobj;
4156 :
4157 : /*
4158 : * Make sure we haven't moved this object previously.
4159 : */
4160 218 : thisobj.classId = TypeRelationId;
4161 218 : thisobj.objectId = typeOid;
4162 218 : thisobj.objectSubId = 0;
4163 :
4164 218 : if (object_address_present(&thisobj, objsMoved))
4165 0 : return InvalidOid;
4166 :
4167 218 : rel = table_open(TypeRelationId, RowExclusiveLock);
4168 :
4169 218 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
4170 218 : if (!HeapTupleIsValid(tup))
4171 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
4172 218 : typform = (Form_pg_type) GETSTRUCT(tup);
4173 :
4174 218 : oldNspOid = typform->typnamespace;
4175 218 : arrayOid = typform->typarray;
4176 :
4177 : /* If the type is already there, we scan skip these next few checks. */
4178 218 : if (oldNspOid != nspOid)
4179 : {
4180 : /* common checks on switching namespaces */
4181 182 : CheckSetNamespace(oldNspOid, nspOid);
4182 :
4183 : /* check for duplicate name (more friendly than unique-index failure) */
4184 182 : if (SearchSysCacheExists2(TYPENAMENSP,
4185 : NameGetDatum(&typform->typname),
4186 : ObjectIdGetDatum(nspOid)))
4187 0 : ereport(ERROR,
4188 : (errcode(ERRCODE_DUPLICATE_OBJECT),
4189 : errmsg("type \"%s\" already exists in schema \"%s\"",
4190 : NameStr(typform->typname),
4191 : get_namespace_name(nspOid))));
4192 : }
4193 :
4194 : /* Detect whether type is a composite type (but not a table rowtype) */
4195 218 : isCompositeType =
4196 318 : (typform->typtype == TYPTYPE_COMPOSITE &&
4197 100 : get_rel_relkind(typform->typrelid) == RELKIND_COMPOSITE_TYPE);
4198 :
4199 : /* Enforce not-table-type if requested */
4200 218 : if (typform->typtype == TYPTYPE_COMPOSITE && !isCompositeType)
4201 : {
4202 86 : if (ignoreDependent)
4203 : {
4204 2 : table_close(rel, RowExclusiveLock);
4205 2 : return InvalidOid;
4206 : }
4207 84 : if (errorOnTableType)
4208 0 : ereport(ERROR,
4209 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4210 : errmsg("%s is a table's row type",
4211 : format_type_be(typeOid)),
4212 : /* translator: %s is an SQL ALTER command */
4213 : errhint("Use %s instead.", "ALTER TABLE")));
4214 : }
4215 :
4216 216 : if (oldNspOid != nspOid)
4217 : {
4218 : /* OK, modify the pg_type row */
4219 :
4220 : /* tup is a copy, so we can scribble directly on it */
4221 180 : typform->typnamespace = nspOid;
4222 :
4223 180 : CatalogTupleUpdate(rel, &tup->t_self, tup);
4224 : }
4225 :
4226 : /*
4227 : * Composite types have pg_class entries.
4228 : *
4229 : * We need to modify the pg_class tuple as well to reflect the change of
4230 : * schema.
4231 : */
4232 216 : if (isCompositeType)
4233 : {
4234 : Relation classRel;
4235 :
4236 14 : classRel = table_open(RelationRelationId, RowExclusiveLock);
4237 :
4238 14 : AlterRelationNamespaceInternal(classRel, typform->typrelid,
4239 : oldNspOid, nspOid,
4240 : false, objsMoved);
4241 :
4242 14 : table_close(classRel, RowExclusiveLock);
4243 :
4244 : /*
4245 : * Check for constraints associated with the composite type (we don't
4246 : * currently support this, but probably will someday).
4247 : */
4248 14 : AlterConstraintNamespaces(typform->typrelid, oldNspOid,
4249 : nspOid, false, objsMoved);
4250 : }
4251 : else
4252 : {
4253 : /* If it's a domain, it might have constraints */
4254 202 : if (typform->typtype == TYPTYPE_DOMAIN)
4255 6 : AlterConstraintNamespaces(typeOid, oldNspOid, nspOid, true,
4256 : objsMoved);
4257 : }
4258 :
4259 : /*
4260 : * Update dependency on schema, if any --- a table rowtype has not got
4261 : * one, and neither does an implicit array.
4262 : */
4263 216 : if (oldNspOid != nspOid &&
4264 172 : (isCompositeType || typform->typtype != TYPTYPE_COMPOSITE) &&
4265 108 : !isImplicitArray)
4266 18 : if (changeDependencyFor(TypeRelationId, typeOid,
4267 : NamespaceRelationId, oldNspOid, nspOid) != 1)
4268 0 : elog(ERROR, "could not change schema dependency for type \"%s\"",
4269 : format_type_be(typeOid));
4270 :
4271 216 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4272 :
4273 216 : heap_freetuple(tup);
4274 :
4275 216 : table_close(rel, RowExclusiveLock);
4276 :
4277 216 : add_exact_object_address(&thisobj, objsMoved);
4278 :
4279 : /* Recursively alter the associated array type, if any */
4280 216 : if (OidIsValid(arrayOid))
4281 108 : AlterTypeNamespaceInternal(arrayOid, nspOid,
4282 : true, /* isImplicitArray */
4283 : false, /* ignoreDependent */
4284 : true, /* errorOnTableType */
4285 : objsMoved);
4286 :
4287 216 : return oldNspOid;
4288 : }
4289 :
4290 : /*
4291 : * AlterType
4292 : * ALTER TYPE <type> SET (option = ...)
4293 : *
4294 : * NOTE: the set of changes that can be allowed here is constrained by many
4295 : * non-obvious implementation restrictions. Tread carefully when considering
4296 : * adding new flexibility.
4297 : */
4298 : ObjectAddress
4299 60 : AlterType(AlterTypeStmt *stmt)
4300 : {
4301 : ObjectAddress address;
4302 : Relation catalog;
4303 : TypeName *typename;
4304 : HeapTuple tup;
4305 : Oid typeOid;
4306 : Form_pg_type typForm;
4307 60 : bool requireSuper = false;
4308 : AlterTypeRecurseParams atparams;
4309 : ListCell *pl;
4310 :
4311 60 : catalog = table_open(TypeRelationId, RowExclusiveLock);
4312 :
4313 : /* Make a TypeName so we can use standard type lookup machinery */
4314 60 : typename = makeTypeNameFromNameList(stmt->typeName);
4315 60 : tup = typenameType(NULL, typename, NULL);
4316 :
4317 54 : typeOid = typeTypeId(tup);
4318 54 : typForm = (Form_pg_type) GETSTRUCT(tup);
4319 :
4320 : /* Process options */
4321 54 : memset(&atparams, 0, sizeof(atparams));
4322 154 : foreach(pl, stmt->options)
4323 : {
4324 106 : DefElem *defel = (DefElem *) lfirst(pl);
4325 :
4326 106 : if (strcmp(defel->defname, "storage") == 0)
4327 : {
4328 12 : char *a = defGetString(defel);
4329 :
4330 12 : if (pg_strcasecmp(a, "plain") == 0)
4331 6 : atparams.storage = TYPSTORAGE_PLAIN;
4332 6 : else if (pg_strcasecmp(a, "external") == 0)
4333 0 : atparams.storage = TYPSTORAGE_EXTERNAL;
4334 6 : else if (pg_strcasecmp(a, "extended") == 0)
4335 6 : atparams.storage = TYPSTORAGE_EXTENDED;
4336 0 : else if (pg_strcasecmp(a, "main") == 0)
4337 0 : atparams.storage = TYPSTORAGE_MAIN;
4338 : else
4339 0 : ereport(ERROR,
4340 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
4341 : errmsg("storage \"%s\" not recognized", a)));
4342 :
4343 : /*
4344 : * Validate the storage request. If the type isn't varlena, it
4345 : * certainly doesn't support non-PLAIN storage.
4346 : */
4347 12 : if (atparams.storage != TYPSTORAGE_PLAIN && typForm->typlen != -1)
4348 0 : ereport(ERROR,
4349 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
4350 : errmsg("fixed-size types must have storage PLAIN")));
4351 :
4352 : /*
4353 : * Switching from PLAIN to non-PLAIN is allowed, but it requires
4354 : * superuser, since we can't validate that the type's C functions
4355 : * will support it. Switching from non-PLAIN to PLAIN is
4356 : * disallowed outright, because it's not practical to ensure that
4357 : * no tables have toasted values of the type. Switching among
4358 : * different non-PLAIN settings is OK, since it just constitutes a
4359 : * change in the strategy requested for columns created in the
4360 : * future.
4361 : */
4362 12 : if (atparams.storage != TYPSTORAGE_PLAIN &&
4363 6 : typForm->typstorage == TYPSTORAGE_PLAIN)
4364 0 : requireSuper = true;
4365 12 : else if (atparams.storage == TYPSTORAGE_PLAIN &&
4366 6 : typForm->typstorage != TYPSTORAGE_PLAIN)
4367 6 : ereport(ERROR,
4368 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
4369 : errmsg("cannot change type's storage to PLAIN")));
4370 :
4371 6 : atparams.updateStorage = true;
4372 : }
4373 94 : else if (strcmp(defel->defname, "receive") == 0)
4374 : {
4375 28 : if (defel->arg != NULL)
4376 28 : atparams.receiveOid =
4377 28 : findTypeReceiveFunction(defGetQualifiedName(defel),
4378 : typeOid);
4379 : else
4380 0 : atparams.receiveOid = InvalidOid; /* NONE, remove function */
4381 28 : atparams.updateReceive = true;
4382 : /* Replacing an I/O function requires superuser. */
4383 28 : requireSuper = true;
4384 : }
4385 66 : else if (strcmp(defel->defname, "send") == 0)
4386 : {
4387 28 : if (defel->arg != NULL)
4388 28 : atparams.sendOid =
4389 28 : findTypeSendFunction(defGetQualifiedName(defel),
4390 : typeOid);
4391 : else
4392 0 : atparams.sendOid = InvalidOid; /* NONE, remove function */
4393 28 : atparams.updateSend = true;
4394 : /* Replacing an I/O function requires superuser. */
4395 28 : requireSuper = true;
4396 : }
4397 38 : else if (strcmp(defel->defname, "typmod_in") == 0)
4398 : {
4399 6 : if (defel->arg != NULL)
4400 6 : atparams.typmodinOid =
4401 6 : findTypeTypmodinFunction(defGetQualifiedName(defel));
4402 : else
4403 0 : atparams.typmodinOid = InvalidOid; /* NONE, remove function */
4404 6 : atparams.updateTypmodin = true;
4405 : /* Replacing an I/O function requires superuser. */
4406 6 : requireSuper = true;
4407 : }
4408 32 : else if (strcmp(defel->defname, "typmod_out") == 0)
4409 : {
4410 6 : if (defel->arg != NULL)
4411 6 : atparams.typmodoutOid =
4412 6 : findTypeTypmodoutFunction(defGetQualifiedName(defel));
4413 : else
4414 0 : atparams.typmodoutOid = InvalidOid; /* NONE, remove function */
4415 6 : atparams.updateTypmodout = true;
4416 : /* Replacing an I/O function requires superuser. */
4417 6 : requireSuper = true;
4418 : }
4419 26 : else if (strcmp(defel->defname, "analyze") == 0)
4420 : {
4421 6 : if (defel->arg != NULL)
4422 6 : atparams.analyzeOid =
4423 6 : findTypeAnalyzeFunction(defGetQualifiedName(defel),
4424 : typeOid);
4425 : else
4426 0 : atparams.analyzeOid = InvalidOid; /* NONE, remove function */
4427 6 : atparams.updateAnalyze = true;
4428 : /* Replacing an analyze function requires superuser. */
4429 6 : requireSuper = true;
4430 : }
4431 20 : else if (strcmp(defel->defname, "subscript") == 0)
4432 : {
4433 20 : if (defel->arg != NULL)
4434 20 : atparams.subscriptOid =
4435 20 : findTypeSubscriptingFunction(defGetQualifiedName(defel),
4436 : typeOid);
4437 : else
4438 0 : atparams.subscriptOid = InvalidOid; /* NONE, remove function */
4439 20 : atparams.updateSubscript = true;
4440 : /* Replacing a subscript function requires superuser. */
4441 20 : requireSuper = true;
4442 : }
4443 :
4444 : /*
4445 : * The rest of the options that CREATE accepts cannot be changed.
4446 : * Check for them so that we can give a meaningful error message.
4447 : */
4448 0 : else if (strcmp(defel->defname, "input") == 0 ||
4449 0 : strcmp(defel->defname, "output") == 0 ||
4450 0 : strcmp(defel->defname, "internallength") == 0 ||
4451 0 : strcmp(defel->defname, "passedbyvalue") == 0 ||
4452 0 : strcmp(defel->defname, "alignment") == 0 ||
4453 0 : strcmp(defel->defname, "like") == 0 ||
4454 0 : strcmp(defel->defname, "category") == 0 ||
4455 0 : strcmp(defel->defname, "preferred") == 0 ||
4456 0 : strcmp(defel->defname, "default") == 0 ||
4457 0 : strcmp(defel->defname, "element") == 0 ||
4458 0 : strcmp(defel->defname, "delimiter") == 0 ||
4459 0 : strcmp(defel->defname, "collatable") == 0)
4460 0 : ereport(ERROR,
4461 : (errcode(ERRCODE_SYNTAX_ERROR),
4462 : errmsg("type attribute \"%s\" cannot be changed",
4463 : defel->defname)));
4464 : else
4465 0 : ereport(ERROR,
4466 : (errcode(ERRCODE_SYNTAX_ERROR),
4467 : errmsg("type attribute \"%s\" not recognized",
4468 : defel->defname)));
4469 : }
4470 :
4471 : /*
4472 : * Permissions check. Require superuser if we decided the command
4473 : * requires that, else must own the type.
4474 : */
4475 48 : if (requireSuper)
4476 : {
4477 42 : if (!superuser())
4478 0 : ereport(ERROR,
4479 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
4480 : errmsg("must be superuser to alter a type")));
4481 : }
4482 : else
4483 : {
4484 6 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
4485 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
4486 : }
4487 :
4488 : /*
4489 : * We disallow all forms of ALTER TYPE SET on types that aren't plain base
4490 : * types. It would for example be highly unsafe, not to mention
4491 : * pointless, to change the send/receive functions for a composite type.
4492 : * Moreover, pg_dump has no support for changing these properties on
4493 : * non-base types. We might weaken this someday, but not now.
4494 : *
4495 : * Note: if you weaken this enough to allow composite types, be sure to
4496 : * adjust the GenerateTypeDependencies call in AlterTypeRecurse.
4497 : */
4498 48 : if (typForm->typtype != TYPTYPE_BASE)
4499 0 : ereport(ERROR,
4500 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4501 : errmsg("%s is not a base type",
4502 : format_type_be(typeOid))));
4503 :
4504 : /*
4505 : * For the same reasons, don't allow direct alteration of array types.
4506 : */
4507 48 : if (IsTrueArrayType(typForm))
4508 0 : ereport(ERROR,
4509 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4510 : errmsg("%s is not a base type",
4511 : format_type_be(typeOid))));
4512 :
4513 : /* OK, recursively update this type and any arrays/domains over it */
4514 48 : AlterTypeRecurse(typeOid, false, tup, catalog, &atparams);
4515 :
4516 : /* Clean up */
4517 48 : ReleaseSysCache(tup);
4518 :
4519 48 : table_close(catalog, RowExclusiveLock);
4520 :
4521 48 : ObjectAddressSet(address, TypeRelationId, typeOid);
4522 :
4523 48 : return address;
4524 : }
4525 :
4526 : /*
4527 : * AlterTypeRecurse: one recursion step for AlterType()
4528 : *
4529 : * Apply the changes specified by "atparams" to the type identified by
4530 : * "typeOid", whose existing pg_type tuple is "tup". If necessary,
4531 : * recursively update its array type as well. Then search for any domains
4532 : * over this type, and recursively apply (most of) the same changes to those
4533 : * domains.
4534 : *
4535 : * We need this because the system generally assumes that a domain inherits
4536 : * many properties from its base type. See DefineDomain() above for details
4537 : * of what is inherited. Arrays inherit a smaller number of properties,
4538 : * but not none.
4539 : *
4540 : * There's a race condition here, in that some other transaction could
4541 : * concurrently add another domain atop this base type; we'd miss updating
4542 : * that one. Hence, be wary of allowing ALTER TYPE to change properties for
4543 : * which it'd be really fatal for a domain to be out of sync with its base
4544 : * type (typlen, for example). In practice, races seem unlikely to be an
4545 : * issue for plausible use-cases for ALTER TYPE. If one does happen, it could
4546 : * be fixed by re-doing the same ALTER TYPE once all prior transactions have
4547 : * committed.
4548 : */
4549 : static void
4550 66 : AlterTypeRecurse(Oid typeOid, bool isImplicitArray,
4551 : HeapTuple tup, Relation catalog,
4552 : AlterTypeRecurseParams *atparams)
4553 : {
4554 : Datum values[Natts_pg_type];
4555 : bool nulls[Natts_pg_type];
4556 : bool replaces[Natts_pg_type];
4557 : HeapTuple newtup;
4558 : SysScanDesc scan;
4559 : ScanKeyData key[1];
4560 : HeapTuple domainTup;
4561 :
4562 : /* Since this function recurses, it could be driven to stack overflow */
4563 66 : check_stack_depth();
4564 :
4565 : /* Update the current type's tuple */
4566 66 : memset(values, 0, sizeof(values));
4567 66 : memset(nulls, 0, sizeof(nulls));
4568 66 : memset(replaces, 0, sizeof(replaces));
4569 :
4570 66 : if (atparams->updateStorage)
4571 : {
4572 12 : replaces[Anum_pg_type_typstorage - 1] = true;
4573 12 : values[Anum_pg_type_typstorage - 1] = CharGetDatum(atparams->storage);
4574 : }
4575 66 : if (atparams->updateReceive)
4576 : {
4577 28 : replaces[Anum_pg_type_typreceive - 1] = true;
4578 28 : values[Anum_pg_type_typreceive - 1] = ObjectIdGetDatum(atparams->receiveOid);
4579 : }
4580 66 : if (atparams->updateSend)
4581 : {
4582 34 : replaces[Anum_pg_type_typsend - 1] = true;
4583 34 : values[Anum_pg_type_typsend - 1] = ObjectIdGetDatum(atparams->sendOid);
4584 : }
4585 66 : if (atparams->updateTypmodin)
4586 : {
4587 12 : replaces[Anum_pg_type_typmodin - 1] = true;
4588 12 : values[Anum_pg_type_typmodin - 1] = ObjectIdGetDatum(atparams->typmodinOid);
4589 : }
4590 66 : if (atparams->updateTypmodout)
4591 : {
4592 12 : replaces[Anum_pg_type_typmodout - 1] = true;
4593 12 : values[Anum_pg_type_typmodout - 1] = ObjectIdGetDatum(atparams->typmodoutOid);
4594 : }
4595 66 : if (atparams->updateAnalyze)
4596 : {
4597 12 : replaces[Anum_pg_type_typanalyze - 1] = true;
4598 12 : values[Anum_pg_type_typanalyze - 1] = ObjectIdGetDatum(atparams->analyzeOid);
4599 : }
4600 66 : if (atparams->updateSubscript)
4601 : {
4602 20 : replaces[Anum_pg_type_typsubscript - 1] = true;
4603 20 : values[Anum_pg_type_typsubscript - 1] = ObjectIdGetDatum(atparams->subscriptOid);
4604 : }
4605 :
4606 66 : newtup = heap_modify_tuple(tup, RelationGetDescr(catalog),
4607 : values, nulls, replaces);
4608 :
4609 66 : CatalogTupleUpdate(catalog, &newtup->t_self, newtup);
4610 :
4611 : /* Rebuild dependencies for this type */
4612 66 : GenerateTypeDependencies(newtup,
4613 : catalog,
4614 : NULL, /* don't have defaultExpr handy */
4615 : NULL, /* don't have typacl handy */
4616 : 0, /* we rejected composite types above */
4617 : isImplicitArray, /* it might be an array */
4618 : isImplicitArray, /* dependent iff it's array */
4619 : false, /* don't touch extension membership */
4620 : true);
4621 :
4622 66 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4623 :
4624 : /*
4625 : * Arrays inherit their base type's typmodin and typmodout, but none of
4626 : * the other properties we're concerned with here. Recurse to the array
4627 : * type if needed.
4628 : */
4629 66 : if (!isImplicitArray &&
4630 60 : (atparams->updateTypmodin || atparams->updateTypmodout))
4631 : {
4632 6 : Oid arrtypoid = ((Form_pg_type) GETSTRUCT(newtup))->typarray;
4633 :
4634 6 : if (OidIsValid(arrtypoid))
4635 : {
4636 : HeapTuple arrtup;
4637 : AlterTypeRecurseParams arrparams;
4638 :
4639 6 : arrtup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(arrtypoid));
4640 6 : if (!HeapTupleIsValid(arrtup))
4641 0 : elog(ERROR, "cache lookup failed for type %u", arrtypoid);
4642 :
4643 6 : memset(&arrparams, 0, sizeof(arrparams));
4644 6 : arrparams.updateTypmodin = atparams->updateTypmodin;
4645 6 : arrparams.updateTypmodout = atparams->updateTypmodout;
4646 6 : arrparams.typmodinOid = atparams->typmodinOid;
4647 6 : arrparams.typmodoutOid = atparams->typmodoutOid;
4648 :
4649 6 : AlterTypeRecurse(arrtypoid, true, arrtup, catalog, &arrparams);
4650 :
4651 6 : ReleaseSysCache(arrtup);
4652 : }
4653 : }
4654 :
4655 : /*
4656 : * Now we need to recurse to domains. However, some properties are not
4657 : * inherited by domains, so clear the update flags for those.
4658 : */
4659 66 : atparams->updateReceive = false; /* domains use F_DOMAIN_RECV */
4660 66 : atparams->updateTypmodin = false; /* domains don't have typmods */
4661 66 : atparams->updateTypmodout = false;
4662 66 : atparams->updateSubscript = false; /* domains don't have subscriptors */
4663 :
4664 : /* Skip the scan if nothing remains to be done */
4665 66 : if (!(atparams->updateStorage ||
4666 54 : atparams->updateSend ||
4667 20 : atparams->updateAnalyze))
4668 20 : return;
4669 :
4670 : /* Search pg_type for possible domains over this type */
4671 46 : ScanKeyInit(&key[0],
4672 : Anum_pg_type_typbasetype,
4673 : BTEqualStrategyNumber, F_OIDEQ,
4674 : ObjectIdGetDatum(typeOid));
4675 :
4676 46 : scan = systable_beginscan(catalog, InvalidOid, false,
4677 : NULL, 1, key);
4678 :
4679 58 : while ((domainTup = systable_getnext(scan)) != NULL)
4680 : {
4681 12 : Form_pg_type domainForm = (Form_pg_type) GETSTRUCT(domainTup);
4682 :
4683 : /*
4684 : * Shouldn't have a nonzero typbasetype in a non-domain, but let's
4685 : * check
4686 : */
4687 12 : if (domainForm->typtype != TYPTYPE_DOMAIN)
4688 0 : continue;
4689 :
4690 12 : AlterTypeRecurse(domainForm->oid, false, domainTup, catalog, atparams);
4691 : }
4692 :
4693 46 : systable_endscan(scan);
4694 : }
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