Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * typecmds.c
4 : * Routines for SQL commands that manipulate types (and domains).
5 : *
6 : * Portions Copyright (c) 1996-2026, 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 : Oid *rangeConstruct2_p, Oid *rangeConstruct3_p);
116 : static void makeMultirangeConstructors(const char *name, Oid namespace,
117 : Oid multirangeOid, Oid rangeOid,
118 : Oid rangeArrayOid,
119 : Oid *mltrngConstruct0_p, Oid *mltrngConstruct1_p, Oid *mltrngConstruct2_p);
120 : static Oid findTypeInputFunction(List *procname, Oid typeOid);
121 : static Oid findTypeOutputFunction(List *procname, Oid typeOid);
122 : static Oid findTypeReceiveFunction(List *procname, Oid typeOid);
123 : static Oid findTypeSendFunction(List *procname, Oid typeOid);
124 : static Oid findTypeTypmodinFunction(List *procname);
125 : static Oid findTypeTypmodoutFunction(List *procname);
126 : static Oid findTypeAnalyzeFunction(List *procname, Oid typeOid);
127 : static Oid findTypeSubscriptingFunction(List *procname, Oid typeOid);
128 : static Oid findRangeSubOpclass(List *opcname, Oid subtype);
129 : static Oid findRangeCanonicalFunction(List *procname, Oid typeOid);
130 : static Oid findRangeSubtypeDiffFunction(List *procname, Oid subtype);
131 : static void validateDomainCheckConstraint(Oid domainoid, const char *ccbin, LOCKMODE lockmode);
132 : static void validateDomainNotNullConstraint(Oid domainoid);
133 : static List *get_rels_with_domain(Oid domainOid, LOCKMODE lockmode);
134 : static void checkEnumOwner(HeapTuple tup);
135 : static char *domainAddCheckConstraint(Oid domainOid, Oid domainNamespace,
136 : Oid baseTypeOid,
137 : int typMod, Constraint *constr,
138 : const char *domainName, ObjectAddress *constrAddr);
139 : static Node *replace_domain_constraint_value(ParseState *pstate,
140 : ColumnRef *cref);
141 : static void domainAddNotNullConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
142 : int typMod, Constraint *constr,
143 : const char *domainName, ObjectAddress *constrAddr);
144 : static void AlterTypeRecurse(Oid typeOid, bool isImplicitArray,
145 : HeapTuple tup, Relation catalog,
146 : AlterTypeRecurseParams *atparams);
147 :
148 :
149 : /*
150 : * DefineType
151 : * Registers a new base type.
152 : */
153 : ObjectAddress
154 396 : DefineType(ParseState *pstate, List *names, List *parameters)
155 : {
156 : char *typeName;
157 : Oid typeNamespace;
158 396 : int16 internalLength = -1; /* default: variable-length */
159 396 : List *inputName = NIL;
160 396 : List *outputName = NIL;
161 396 : List *receiveName = NIL;
162 396 : List *sendName = NIL;
163 396 : List *typmodinName = NIL;
164 396 : List *typmodoutName = NIL;
165 396 : List *analyzeName = NIL;
166 396 : List *subscriptName = NIL;
167 396 : char category = TYPCATEGORY_USER;
168 396 : bool preferred = false;
169 396 : char delimiter = DEFAULT_TYPDELIM;
170 396 : Oid elemType = InvalidOid;
171 396 : char *defaultValue = NULL;
172 396 : bool byValue = false;
173 396 : char alignment = TYPALIGN_INT; /* default alignment */
174 396 : char storage = TYPSTORAGE_PLAIN; /* default TOAST storage method */
175 396 : Oid collation = InvalidOid;
176 396 : DefElem *likeTypeEl = NULL;
177 396 : DefElem *internalLengthEl = NULL;
178 396 : DefElem *inputNameEl = NULL;
179 396 : DefElem *outputNameEl = NULL;
180 396 : DefElem *receiveNameEl = NULL;
181 396 : DefElem *sendNameEl = NULL;
182 396 : DefElem *typmodinNameEl = NULL;
183 396 : DefElem *typmodoutNameEl = NULL;
184 396 : DefElem *analyzeNameEl = NULL;
185 396 : DefElem *subscriptNameEl = NULL;
186 396 : DefElem *categoryEl = NULL;
187 396 : DefElem *preferredEl = NULL;
188 396 : DefElem *delimiterEl = NULL;
189 396 : DefElem *elemTypeEl = NULL;
190 396 : DefElem *defaultValueEl = NULL;
191 396 : DefElem *byValueEl = NULL;
192 396 : DefElem *alignmentEl = NULL;
193 396 : DefElem *storageEl = NULL;
194 396 : DefElem *collatableEl = NULL;
195 : Oid inputOid;
196 : Oid outputOid;
197 396 : Oid receiveOid = InvalidOid;
198 396 : Oid sendOid = InvalidOid;
199 396 : Oid typmodinOid = InvalidOid;
200 396 : Oid typmodoutOid = InvalidOid;
201 396 : Oid analyzeOid = InvalidOid;
202 396 : Oid subscriptOid = InvalidOid;
203 : char *array_type;
204 : Oid array_oid;
205 : Oid typoid;
206 : ListCell *pl;
207 : ObjectAddress address;
208 :
209 : /*
210 : * As of Postgres 8.4, we require superuser privilege to create a base
211 : * type. This is simple paranoia: there are too many ways to mess up the
212 : * system with an incorrect type definition (for instance, representation
213 : * parameters that don't match what the C code expects). In practice it
214 : * takes superuser privilege to create the I/O functions, and so the
215 : * former requirement that you own the I/O functions pretty much forced
216 : * superuserness anyway. We're just making doubly sure here.
217 : *
218 : * XXX re-enable NOT_USED code sections below if you remove this test.
219 : */
220 396 : if (!superuser())
221 0 : ereport(ERROR,
222 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
223 : errmsg("must be superuser to create a base type")));
224 :
225 : /* Convert list of names to a name and namespace */
226 396 : typeNamespace = QualifiedNameGetCreationNamespace(names, &typeName);
227 :
228 : #ifdef NOT_USED
229 : /* XXX this is unnecessary given the superuser check above */
230 : /* Check we have creation rights in target namespace */
231 : aclresult = object_aclcheck(NamespaceRelationId, typeNamespace, GetUserId(), ACL_CREATE);
232 : if (aclresult != ACLCHECK_OK)
233 : aclcheck_error(aclresult, OBJECT_SCHEMA,
234 : get_namespace_name(typeNamespace));
235 : #endif
236 :
237 : /*
238 : * Look to see if type already exists.
239 : */
240 396 : typoid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
241 : CStringGetDatum(typeName),
242 : ObjectIdGetDatum(typeNamespace));
243 :
244 : /*
245 : * If it's not a shell, see if it's an autogenerated array type, and if so
246 : * rename it out of the way.
247 : */
248 396 : if (OidIsValid(typoid) && get_typisdefined(typoid))
249 : {
250 6 : if (moveArrayTypeName(typoid, typeName, typeNamespace))
251 0 : typoid = InvalidOid;
252 : else
253 6 : ereport(ERROR,
254 : (errcode(ERRCODE_DUPLICATE_OBJECT),
255 : errmsg("type \"%s\" already exists", typeName)));
256 : }
257 :
258 : /*
259 : * If this command is a parameterless CREATE TYPE, then we're just here to
260 : * make a shell type, so do that (or fail if there already is a shell).
261 : */
262 390 : if (parameters == NIL)
263 : {
264 150 : if (OidIsValid(typoid))
265 6 : ereport(ERROR,
266 : (errcode(ERRCODE_DUPLICATE_OBJECT),
267 : errmsg("type \"%s\" already exists", typeName)));
268 :
269 144 : address = TypeShellMake(typeName, typeNamespace, GetUserId());
270 144 : return address;
271 : }
272 :
273 : /*
274 : * Otherwise, we must already have a shell type, since there is no other
275 : * way that the I/O functions could have been created.
276 : */
277 240 : if (!OidIsValid(typoid))
278 6 : ereport(ERROR,
279 : (errcode(ERRCODE_DUPLICATE_OBJECT),
280 : errmsg("type \"%s\" does not exist", typeName),
281 : errhint("Create the type as a shell type, then create its I/O functions, then do a full CREATE TYPE.")));
282 :
283 : /* Extract the parameters from the parameter list */
284 1182 : foreach(pl, parameters)
285 : {
286 948 : DefElem *defel = (DefElem *) lfirst(pl);
287 : DefElem **defelp;
288 :
289 948 : if (strcmp(defel->defname, "like") == 0)
290 56 : defelp = &likeTypeEl;
291 892 : else if (strcmp(defel->defname, "internallength") == 0)
292 156 : defelp = &internalLengthEl;
293 736 : else if (strcmp(defel->defname, "input") == 0)
294 228 : defelp = &inputNameEl;
295 508 : else if (strcmp(defel->defname, "output") == 0)
296 228 : defelp = &outputNameEl;
297 280 : else if (strcmp(defel->defname, "receive") == 0)
298 18 : defelp = &receiveNameEl;
299 262 : else if (strcmp(defel->defname, "send") == 0)
300 18 : defelp = &sendNameEl;
301 244 : else if (strcmp(defel->defname, "typmod_in") == 0)
302 8 : defelp = &typmodinNameEl;
303 236 : else if (strcmp(defel->defname, "typmod_out") == 0)
304 8 : defelp = &typmodoutNameEl;
305 228 : else if (strcmp(defel->defname, "analyze") == 0 ||
306 228 : strcmp(defel->defname, "analyse") == 0)
307 0 : defelp = &analyzeNameEl;
308 228 : else if (strcmp(defel->defname, "subscript") == 0)
309 2 : defelp = &subscriptNameEl;
310 226 : else if (strcmp(defel->defname, "category") == 0)
311 12 : defelp = &categoryEl;
312 214 : else if (strcmp(defel->defname, "preferred") == 0)
313 12 : defelp = &preferredEl;
314 202 : else if (strcmp(defel->defname, "delimiter") == 0)
315 0 : defelp = &delimiterEl;
316 202 : else if (strcmp(defel->defname, "element") == 0)
317 14 : defelp = &elemTypeEl;
318 188 : else if (strcmp(defel->defname, "default") == 0)
319 18 : defelp = &defaultValueEl;
320 170 : else if (strcmp(defel->defname, "passedbyvalue") == 0)
321 14 : defelp = &byValueEl;
322 156 : else if (strcmp(defel->defname, "alignment") == 0)
323 56 : defelp = &alignmentEl;
324 100 : else if (strcmp(defel->defname, "storage") == 0)
325 60 : defelp = &storageEl;
326 40 : else if (strcmp(defel->defname, "collatable") == 0)
327 4 : defelp = &collatableEl;
328 : else
329 : {
330 : /* WARNING, not ERROR, for historical backwards-compatibility */
331 36 : ereport(WARNING,
332 : (errcode(ERRCODE_SYNTAX_ERROR),
333 : errmsg("type attribute \"%s\" not recognized",
334 : defel->defname),
335 : parser_errposition(pstate, defel->location)));
336 36 : continue;
337 : }
338 912 : if (*defelp != NULL)
339 0 : errorConflictingDefElem(defel, pstate);
340 912 : *defelp = defel;
341 : }
342 :
343 : /*
344 : * Now interpret the options; we do this separately so that LIKE can be
345 : * overridden by other options regardless of the ordering in the parameter
346 : * list.
347 : */
348 234 : if (likeTypeEl)
349 : {
350 : Type likeType;
351 : Form_pg_type likeForm;
352 :
353 56 : likeType = typenameType(pstate, defGetTypeName(likeTypeEl), NULL);
354 50 : likeForm = (Form_pg_type) GETSTRUCT(likeType);
355 50 : internalLength = likeForm->typlen;
356 50 : byValue = likeForm->typbyval;
357 50 : alignment = likeForm->typalign;
358 50 : storage = likeForm->typstorage;
359 50 : ReleaseSysCache(likeType);
360 : }
361 228 : if (internalLengthEl)
362 156 : internalLength = defGetTypeLength(internalLengthEl);
363 228 : if (inputNameEl)
364 222 : inputName = defGetQualifiedName(inputNameEl);
365 228 : if (outputNameEl)
366 222 : outputName = defGetQualifiedName(outputNameEl);
367 228 : if (receiveNameEl)
368 18 : receiveName = defGetQualifiedName(receiveNameEl);
369 228 : if (sendNameEl)
370 18 : sendName = defGetQualifiedName(sendNameEl);
371 228 : if (typmodinNameEl)
372 8 : typmodinName = defGetQualifiedName(typmodinNameEl);
373 228 : if (typmodoutNameEl)
374 8 : typmodoutName = defGetQualifiedName(typmodoutNameEl);
375 228 : if (analyzeNameEl)
376 0 : analyzeName = defGetQualifiedName(analyzeNameEl);
377 228 : if (subscriptNameEl)
378 2 : subscriptName = defGetQualifiedName(subscriptNameEl);
379 228 : if (categoryEl)
380 : {
381 12 : char *p = defGetString(categoryEl);
382 :
383 12 : category = p[0];
384 : /* restrict to non-control ASCII */
385 12 : if (category < 32 || category > 126)
386 0 : ereport(ERROR,
387 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
388 : errmsg("invalid type category \"%s\": must be simple ASCII",
389 : p)));
390 : }
391 228 : if (preferredEl)
392 12 : preferred = defGetBoolean(preferredEl);
393 228 : if (delimiterEl)
394 : {
395 0 : char *p = defGetString(delimiterEl);
396 :
397 0 : delimiter = p[0];
398 : /* XXX shouldn't we restrict the delimiter? */
399 : }
400 228 : if (elemTypeEl)
401 : {
402 14 : elemType = typenameTypeId(NULL, defGetTypeName(elemTypeEl));
403 : /* disallow arrays of pseudotypes */
404 14 : if (get_typtype(elemType) == TYPTYPE_PSEUDO)
405 0 : ereport(ERROR,
406 : (errcode(ERRCODE_DATATYPE_MISMATCH),
407 : errmsg("array element type cannot be %s",
408 : format_type_be(elemType))));
409 : }
410 228 : if (defaultValueEl)
411 18 : defaultValue = defGetString(defaultValueEl);
412 228 : if (byValueEl)
413 14 : byValue = defGetBoolean(byValueEl);
414 228 : if (alignmentEl)
415 : {
416 56 : char *a = defGetString(alignmentEl);
417 :
418 : /*
419 : * Note: if argument was an unquoted identifier, parser will have
420 : * applied translations to it, so be prepared to recognize translated
421 : * type names as well as the nominal form.
422 : */
423 94 : if (pg_strcasecmp(a, "double") == 0 ||
424 76 : pg_strcasecmp(a, "float8") == 0 ||
425 38 : pg_strcasecmp(a, "pg_catalog.float8") == 0)
426 18 : alignment = TYPALIGN_DOUBLE;
427 44 : else if (pg_strcasecmp(a, "int4") == 0 ||
428 6 : pg_strcasecmp(a, "pg_catalog.int4") == 0)
429 38 : alignment = TYPALIGN_INT;
430 0 : else if (pg_strcasecmp(a, "int2") == 0 ||
431 0 : pg_strcasecmp(a, "pg_catalog.int2") == 0)
432 0 : alignment = TYPALIGN_SHORT;
433 0 : else if (pg_strcasecmp(a, "char") == 0 ||
434 0 : pg_strcasecmp(a, "pg_catalog.bpchar") == 0)
435 0 : alignment = TYPALIGN_CHAR;
436 : else
437 0 : ereport(ERROR,
438 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
439 : errmsg("alignment \"%s\" not recognized", a)));
440 : }
441 228 : if (storageEl)
442 : {
443 60 : char *a = defGetString(storageEl);
444 :
445 60 : if (pg_strcasecmp(a, "plain") == 0)
446 18 : storage = TYPSTORAGE_PLAIN;
447 42 : else if (pg_strcasecmp(a, "external") == 0)
448 0 : storage = TYPSTORAGE_EXTERNAL;
449 42 : else if (pg_strcasecmp(a, "extended") == 0)
450 36 : storage = TYPSTORAGE_EXTENDED;
451 6 : else if (pg_strcasecmp(a, "main") == 0)
452 6 : storage = TYPSTORAGE_MAIN;
453 : else
454 0 : ereport(ERROR,
455 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
456 : errmsg("storage \"%s\" not recognized", a)));
457 : }
458 228 : if (collatableEl)
459 4 : collation = defGetBoolean(collatableEl) ? DEFAULT_COLLATION_OID : InvalidOid;
460 :
461 : /*
462 : * make sure we have our required definitions
463 : */
464 228 : if (inputName == NIL)
465 6 : ereport(ERROR,
466 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
467 : errmsg("type input function must be specified")));
468 222 : if (outputName == NIL)
469 0 : ereport(ERROR,
470 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
471 : errmsg("type output function must be specified")));
472 :
473 222 : if (typmodinName == NIL && typmodoutName != NIL)
474 0 : ereport(ERROR,
475 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
476 : errmsg("type modifier output function is useless without a type modifier input function")));
477 :
478 : /*
479 : * Convert I/O proc names to OIDs
480 : */
481 222 : inputOid = findTypeInputFunction(inputName, typoid);
482 216 : outputOid = findTypeOutputFunction(outputName, typoid);
483 216 : if (receiveName)
484 18 : receiveOid = findTypeReceiveFunction(receiveName, typoid);
485 216 : if (sendName)
486 18 : sendOid = findTypeSendFunction(sendName, typoid);
487 :
488 : /*
489 : * Convert typmodin/out function proc names to OIDs.
490 : */
491 216 : if (typmodinName)
492 8 : typmodinOid = findTypeTypmodinFunction(typmodinName);
493 216 : if (typmodoutName)
494 8 : typmodoutOid = findTypeTypmodoutFunction(typmodoutName);
495 :
496 : /*
497 : * Convert analysis function proc name to an OID. If no analysis function
498 : * is specified, we'll use zero to select the built-in default algorithm.
499 : */
500 216 : if (analyzeName)
501 0 : analyzeOid = findTypeAnalyzeFunction(analyzeName, typoid);
502 :
503 : /*
504 : * Likewise look up the subscripting function if any. If it is not
505 : * specified, but a typelem is specified, allow that if
506 : * raw_array_subscript_handler can be used. (This is for backwards
507 : * compatibility; maybe someday we should throw an error instead.)
508 : */
509 216 : if (subscriptName)
510 2 : subscriptOid = findTypeSubscriptingFunction(subscriptName, typoid);
511 214 : else if (OidIsValid(elemType))
512 : {
513 6 : if (internalLength > 0 && !byValue && get_typlen(elemType) > 0)
514 6 : subscriptOid = F_RAW_ARRAY_SUBSCRIPT_HANDLER;
515 : else
516 0 : ereport(ERROR,
517 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
518 : errmsg("element type cannot be specified without a subscripting function")));
519 : }
520 :
521 : /*
522 : * Check permissions on functions. We choose to require the creator/owner
523 : * of a type to also own the underlying functions. Since creating a type
524 : * is tantamount to granting public execute access on the functions, the
525 : * minimum sane check would be for execute-with-grant-option. But we
526 : * don't have a way to make the type go away if the grant option is
527 : * revoked, so ownership seems better.
528 : *
529 : * XXX For now, this is all unnecessary given the superuser check above.
530 : * If we ever relax that, these calls likely should be moved into
531 : * findTypeInputFunction et al, where they could be shared by AlterType.
532 : */
533 : #ifdef NOT_USED
534 : if (inputOid && !object_ownercheck(ProcedureRelationId, inputOid, GetUserId()))
535 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
536 : NameListToString(inputName));
537 : if (outputOid && !object_ownercheck(ProcedureRelationId, outputOid, GetUserId()))
538 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
539 : NameListToString(outputName));
540 : if (receiveOid && !object_ownercheck(ProcedureRelationId, receiveOid, GetUserId()))
541 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
542 : NameListToString(receiveName));
543 : if (sendOid && !object_ownercheck(ProcedureRelationId, sendOid, GetUserId()))
544 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
545 : NameListToString(sendName));
546 : if (typmodinOid && !object_ownercheck(ProcedureRelationId, typmodinOid, GetUserId()))
547 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
548 : NameListToString(typmodinName));
549 : if (typmodoutOid && !object_ownercheck(ProcedureRelationId, typmodoutOid, GetUserId()))
550 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
551 : NameListToString(typmodoutName));
552 : if (analyzeOid && !object_ownercheck(ProcedureRelationId, analyzeOid, GetUserId()))
553 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
554 : NameListToString(analyzeName));
555 : if (subscriptOid && !object_ownercheck(ProcedureRelationId, subscriptOid, GetUserId()))
556 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_FUNCTION,
557 : NameListToString(subscriptName));
558 : #endif
559 :
560 : /*
561 : * OK, we're done checking, time to make the type. We must assign the
562 : * array type OID ahead of calling TypeCreate, since the base type and
563 : * array type each refer to the other.
564 : */
565 216 : array_oid = AssignTypeArrayOid();
566 :
567 : /*
568 : * now have TypeCreate do all the real work.
569 : *
570 : * Note: the pg_type.oid is stored in user tables as array elements (base
571 : * types) in ArrayType and in composite types in DatumTupleFields. This
572 : * oid must be preserved by binary upgrades.
573 : */
574 : address =
575 216 : TypeCreate(InvalidOid, /* no predetermined type OID */
576 : typeName, /* type name */
577 : typeNamespace, /* namespace */
578 : InvalidOid, /* relation oid (n/a here) */
579 : 0, /* relation kind (ditto) */
580 : GetUserId(), /* owner's ID */
581 : internalLength, /* internal size */
582 : TYPTYPE_BASE, /* type-type (base type) */
583 : category, /* type-category */
584 : preferred, /* is it a preferred type? */
585 : delimiter, /* array element delimiter */
586 : inputOid, /* input procedure */
587 : outputOid, /* output procedure */
588 : receiveOid, /* receive procedure */
589 : sendOid, /* send procedure */
590 : typmodinOid, /* typmodin procedure */
591 : typmodoutOid, /* typmodout procedure */
592 : analyzeOid, /* analyze procedure */
593 : subscriptOid, /* subscript procedure */
594 : elemType, /* element type ID */
595 : false, /* this is not an implicit array type */
596 : array_oid, /* array type we are about to create */
597 : InvalidOid, /* base type ID (only for domains) */
598 : defaultValue, /* default type value */
599 : NULL, /* no binary form available */
600 : byValue, /* passed by value */
601 : alignment, /* required alignment */
602 : storage, /* TOAST strategy */
603 : -1, /* typMod (Domains only) */
604 : 0, /* Array Dimensions of typbasetype */
605 : false, /* Type NOT NULL */
606 : collation); /* type's collation */
607 : Assert(typoid == address.objectId);
608 :
609 : /*
610 : * Create the array type that goes with it.
611 : */
612 216 : array_type = makeArrayTypeName(typeName, typeNamespace);
613 :
614 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for arrays */
615 216 : alignment = (alignment == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
616 :
617 216 : TypeCreate(array_oid, /* force assignment of this type OID */
618 : array_type, /* type name */
619 : typeNamespace, /* namespace */
620 : InvalidOid, /* relation oid (n/a here) */
621 : 0, /* relation kind (ditto) */
622 : GetUserId(), /* owner's ID */
623 : -1, /* internal size (always varlena) */
624 : TYPTYPE_BASE, /* type-type (base type) */
625 : TYPCATEGORY_ARRAY, /* type-category (array) */
626 : false, /* array types are never preferred */
627 : delimiter, /* array element delimiter */
628 : F_ARRAY_IN, /* input procedure */
629 : F_ARRAY_OUT, /* output procedure */
630 : F_ARRAY_RECV, /* receive procedure */
631 : F_ARRAY_SEND, /* send procedure */
632 : typmodinOid, /* typmodin procedure */
633 : typmodoutOid, /* typmodout procedure */
634 : F_ARRAY_TYPANALYZE, /* analyze procedure */
635 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
636 : typoid, /* element type ID */
637 : true, /* yes this is an array type */
638 : InvalidOid, /* no further array type */
639 : InvalidOid, /* base type ID */
640 : NULL, /* never a default type value */
641 : NULL, /* binary default isn't sent either */
642 : false, /* never passed by value */
643 : alignment, /* see above */
644 : TYPSTORAGE_EXTENDED, /* ARRAY is always toastable */
645 : -1, /* typMod (Domains only) */
646 : 0, /* Array dimensions of typbasetype */
647 : false, /* Type NOT NULL */
648 : collation); /* type's collation */
649 :
650 216 : pfree(array_type);
651 :
652 216 : return address;
653 : }
654 :
655 : /*
656 : * Guts of type deletion.
657 : */
658 : void
659 82734 : RemoveTypeById(Oid typeOid)
660 : {
661 : Relation relation;
662 : HeapTuple tup;
663 :
664 82734 : relation = table_open(TypeRelationId, RowExclusiveLock);
665 :
666 82734 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typeOid));
667 82734 : if (!HeapTupleIsValid(tup))
668 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
669 :
670 82734 : CatalogTupleDelete(relation, &tup->t_self);
671 :
672 : /*
673 : * If it is an enum, delete the pg_enum entries too; we don't bother with
674 : * making dependency entries for those, so it has to be done "by hand"
675 : * here.
676 : */
677 82734 : if (((Form_pg_type) GETSTRUCT(tup))->typtype == TYPTYPE_ENUM)
678 324 : EnumValuesDelete(typeOid);
679 :
680 : /*
681 : * If it is a range type, delete the pg_range entry too; we don't bother
682 : * with making a dependency entry for that, so it has to be done "by hand"
683 : * here.
684 : */
685 82734 : if (((Form_pg_type) GETSTRUCT(tup))->typtype == TYPTYPE_RANGE)
686 104 : RangeDelete(typeOid);
687 :
688 82734 : ReleaseSysCache(tup);
689 :
690 82734 : table_close(relation, RowExclusiveLock);
691 82734 : }
692 :
693 :
694 : /*
695 : * DefineDomain
696 : * Registers a new domain.
697 : */
698 : ObjectAddress
699 1474 : DefineDomain(ParseState *pstate, CreateDomainStmt *stmt)
700 : {
701 : char *domainName;
702 : char *domainArrayName;
703 : Oid domainNamespace;
704 : AclResult aclresult;
705 : int16 internalLength;
706 : Oid inputProcedure;
707 : Oid outputProcedure;
708 : Oid receiveProcedure;
709 : Oid sendProcedure;
710 : Oid analyzeProcedure;
711 : bool byValue;
712 : char category;
713 : char delimiter;
714 : char alignment;
715 : char storage;
716 : char typtype;
717 : Datum datum;
718 : bool isnull;
719 1474 : char *defaultValue = NULL;
720 1474 : char *defaultValueBin = NULL;
721 1474 : bool saw_default = false;
722 1474 : bool typNotNull = false;
723 1474 : bool nullDefined = false;
724 1474 : int32 typNDims = list_length(stmt->typeName->arrayBounds);
725 : HeapTuple typeTup;
726 1474 : List *schema = stmt->constraints;
727 : ListCell *listptr;
728 : Oid basetypeoid;
729 : Oid old_type_oid;
730 : Oid domaincoll;
731 : Oid domainArrayOid;
732 : Form_pg_type baseType;
733 : int32 basetypeMod;
734 : Oid baseColl;
735 : ObjectAddress address;
736 :
737 : /* Convert list of names to a name and namespace */
738 1474 : domainNamespace = QualifiedNameGetCreationNamespace(stmt->domainname,
739 : &domainName);
740 :
741 : /* Check we have creation rights in target namespace */
742 1474 : aclresult = object_aclcheck(NamespaceRelationId, domainNamespace, GetUserId(),
743 : ACL_CREATE);
744 1474 : if (aclresult != ACLCHECK_OK)
745 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
746 0 : get_namespace_name(domainNamespace));
747 :
748 : /*
749 : * Check for collision with an existing type name. If there is one and
750 : * it's an autogenerated array, we can rename it out of the way.
751 : */
752 1474 : old_type_oid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
753 : CStringGetDatum(domainName),
754 : ObjectIdGetDatum(domainNamespace));
755 1474 : if (OidIsValid(old_type_oid))
756 : {
757 0 : if (!moveArrayTypeName(old_type_oid, domainName, domainNamespace))
758 0 : ereport(ERROR,
759 : (errcode(ERRCODE_DUPLICATE_OBJECT),
760 : errmsg("type \"%s\" already exists", domainName)));
761 : }
762 :
763 : /*
764 : * Look up the base type.
765 : */
766 1474 : typeTup = typenameType(pstate, stmt->typeName, &basetypeMod);
767 1468 : baseType = (Form_pg_type) GETSTRUCT(typeTup);
768 1468 : basetypeoid = baseType->oid;
769 :
770 : /*
771 : * Base type must be a plain base type, a composite type, another domain,
772 : * an enum or a range type. Domains over pseudotypes would create a
773 : * security hole. (It would be shorter to code this to just check for
774 : * pseudotypes; but it seems safer to call out the specific typtypes that
775 : * are supported, rather than assume that all future typtypes would be
776 : * automatically supported.)
777 : */
778 1468 : typtype = baseType->typtype;
779 1468 : if (typtype != TYPTYPE_BASE &&
780 82 : typtype != TYPTYPE_COMPOSITE &&
781 32 : typtype != TYPTYPE_DOMAIN &&
782 18 : typtype != TYPTYPE_ENUM &&
783 12 : typtype != TYPTYPE_RANGE &&
784 : typtype != TYPTYPE_MULTIRANGE)
785 6 : ereport(ERROR,
786 : (errcode(ERRCODE_DATATYPE_MISMATCH),
787 : errmsg("\"%s\" is not a valid base type for a domain",
788 : TypeNameToString(stmt->typeName)),
789 : parser_errposition(pstate, stmt->typeName->location)));
790 :
791 1462 : aclresult = object_aclcheck(TypeRelationId, basetypeoid, GetUserId(), ACL_USAGE);
792 1462 : if (aclresult != ACLCHECK_OK)
793 6 : aclcheck_error_type(aclresult, basetypeoid);
794 :
795 : /*
796 : * Collect the properties of the new domain. Some are inherited from the
797 : * base type, some are not. If you change any of this inheritance
798 : * behavior, be sure to update AlterTypeRecurse() to match!
799 : */
800 :
801 : /*
802 : * Identify the collation if any
803 : */
804 1456 : baseColl = baseType->typcollation;
805 1456 : if (stmt->collClause)
806 246 : domaincoll = get_collation_oid(stmt->collClause->collname, false);
807 : else
808 1210 : domaincoll = baseColl;
809 :
810 : /* Complain if COLLATE is applied to an uncollatable type */
811 1456 : if (OidIsValid(domaincoll) && !OidIsValid(baseColl))
812 18 : ereport(ERROR,
813 : (errcode(ERRCODE_DATATYPE_MISMATCH),
814 : errmsg("collations are not supported by type %s",
815 : format_type_be(basetypeoid)),
816 : parser_errposition(pstate, stmt->typeName->location)));
817 :
818 : /* passed by value */
819 1438 : byValue = baseType->typbyval;
820 :
821 : /* Required Alignment */
822 1438 : alignment = baseType->typalign;
823 :
824 : /* TOAST Strategy */
825 1438 : storage = baseType->typstorage;
826 :
827 : /* Storage Length */
828 1438 : internalLength = baseType->typlen;
829 :
830 : /* Type Category */
831 1438 : category = baseType->typcategory;
832 :
833 : /* Array element Delimiter */
834 1438 : delimiter = baseType->typdelim;
835 :
836 : /* I/O Functions */
837 1438 : inputProcedure = F_DOMAIN_IN;
838 1438 : outputProcedure = baseType->typoutput;
839 1438 : receiveProcedure = F_DOMAIN_RECV;
840 1438 : sendProcedure = baseType->typsend;
841 :
842 : /* Domains never accept typmods, so no typmodin/typmodout needed */
843 :
844 : /* Analysis function */
845 1438 : analyzeProcedure = baseType->typanalyze;
846 :
847 : /*
848 : * Domains don't need a subscript function, since they are not
849 : * subscriptable on their own. If the base type is subscriptable, the
850 : * parser will reduce the type to the base type before subscripting.
851 : */
852 :
853 : /* Inherited default value */
854 1438 : datum = SysCacheGetAttr(TYPEOID, typeTup,
855 : Anum_pg_type_typdefault, &isnull);
856 1438 : if (!isnull)
857 0 : defaultValue = TextDatumGetCString(datum);
858 :
859 : /* Inherited default binary value */
860 1438 : datum = SysCacheGetAttr(TYPEOID, typeTup,
861 : Anum_pg_type_typdefaultbin, &isnull);
862 1438 : if (!isnull)
863 0 : defaultValueBin = TextDatumGetCString(datum);
864 :
865 : /*
866 : * Run through constraints manually to avoid the additional processing
867 : * conducted by DefineRelation() and friends.
868 : */
869 2280 : foreach(listptr, schema)
870 : {
871 920 : Constraint *constr = lfirst(listptr);
872 :
873 920 : if (!IsA(constr, Constraint))
874 0 : elog(ERROR, "unrecognized node type: %d",
875 : (int) nodeTag(constr));
876 920 : switch (constr->contype)
877 : {
878 182 : case CONSTR_DEFAULT:
879 :
880 : /*
881 : * The inherited default value may be overridden by the user
882 : * with the DEFAULT <expr> clause ... but only once.
883 : */
884 182 : if (saw_default)
885 6 : ereport(ERROR,
886 : errcode(ERRCODE_SYNTAX_ERROR),
887 : errmsg("multiple default expressions"),
888 : parser_errposition(pstate, constr->location));
889 176 : saw_default = true;
890 :
891 176 : if (constr->raw_expr)
892 : {
893 : Node *defaultExpr;
894 :
895 : /*
896 : * Cook the constr->raw_expr into an expression. Note:
897 : * name is strictly for error message
898 : */
899 176 : defaultExpr = cookDefault(pstate, constr->raw_expr,
900 : basetypeoid,
901 : basetypeMod,
902 : domainName,
903 : 0);
904 :
905 : /*
906 : * If the expression is just a NULL constant, we treat it
907 : * like not having a default.
908 : *
909 : * Note that if the basetype is another domain, we'll see
910 : * a CoerceToDomain expr here and not discard the default.
911 : * This is critical because the domain default needs to be
912 : * retained to override any default that the base domain
913 : * might have.
914 : */
915 170 : if (defaultExpr == NULL ||
916 170 : (IsA(defaultExpr, Const) &&
917 36 : ((Const *) defaultExpr)->constisnull))
918 : {
919 0 : defaultValue = NULL;
920 0 : defaultValueBin = NULL;
921 : }
922 : else
923 : {
924 : /*
925 : * Expression must be stored as a nodeToString result,
926 : * but we also require a valid textual representation
927 : * (mainly to make life easier for pg_dump).
928 : */
929 : defaultValue =
930 170 : deparse_expression(defaultExpr,
931 : NIL, false, false);
932 170 : defaultValueBin = nodeToString(defaultExpr);
933 : }
934 : }
935 : else
936 : {
937 : /* No default (can this still happen?) */
938 0 : defaultValue = NULL;
939 0 : defaultValueBin = NULL;
940 : }
941 170 : break;
942 :
943 112 : case CONSTR_NOTNULL:
944 112 : if (nullDefined)
945 : {
946 6 : if (!typNotNull)
947 0 : ereport(ERROR,
948 : errcode(ERRCODE_SYNTAX_ERROR),
949 : errmsg("conflicting NULL/NOT NULL constraints"),
950 : parser_errposition(pstate, constr->location));
951 :
952 6 : ereport(ERROR,
953 : errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
954 : errmsg("redundant NOT NULL constraint definition"),
955 : parser_errposition(pstate, constr->location));
956 : }
957 106 : if (constr->is_no_inherit)
958 6 : ereport(ERROR,
959 : errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
960 : errmsg("not-null constraints for domains cannot be marked NO INHERIT"),
961 : parser_errposition(pstate, constr->location));
962 100 : typNotNull = true;
963 100 : nullDefined = true;
964 100 : break;
965 :
966 6 : case CONSTR_NULL:
967 6 : if (nullDefined && typNotNull)
968 6 : ereport(ERROR,
969 : errcode(ERRCODE_SYNTAX_ERROR),
970 : errmsg("conflicting NULL/NOT NULL constraints"),
971 : parser_errposition(pstate, constr->location));
972 0 : typNotNull = false;
973 0 : nullDefined = true;
974 0 : break;
975 :
976 578 : case CONSTR_CHECK:
977 :
978 : /*
979 : * Check constraints are handled after domain creation, as
980 : * they require the Oid of the domain; at this point we can
981 : * only check that they're not marked NO INHERIT, because that
982 : * would be bogus.
983 : */
984 578 : if (constr->is_no_inherit)
985 6 : ereport(ERROR,
986 : errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
987 : errmsg("check constraints for domains cannot be marked NO INHERIT"),
988 : parser_errposition(pstate, constr->location));
989 :
990 572 : break;
991 :
992 : /*
993 : * All else are error cases
994 : */
995 6 : case CONSTR_UNIQUE:
996 6 : ereport(ERROR,
997 : errcode(ERRCODE_SYNTAX_ERROR),
998 : errmsg("unique constraints not possible for domains"),
999 : parser_errposition(pstate, constr->location));
1000 : break;
1001 :
1002 6 : case CONSTR_PRIMARY:
1003 6 : ereport(ERROR,
1004 : (errcode(ERRCODE_SYNTAX_ERROR),
1005 : errmsg("primary key constraints not possible for domains"),
1006 : parser_errposition(pstate, constr->location)));
1007 : break;
1008 :
1009 0 : case CONSTR_EXCLUSION:
1010 0 : ereport(ERROR,
1011 : (errcode(ERRCODE_SYNTAX_ERROR),
1012 : errmsg("exclusion constraints not possible for domains"),
1013 : parser_errposition(pstate, constr->location)));
1014 : break;
1015 :
1016 6 : case CONSTR_FOREIGN:
1017 6 : ereport(ERROR,
1018 : (errcode(ERRCODE_SYNTAX_ERROR),
1019 : errmsg("foreign key constraints not possible for domains"),
1020 : parser_errposition(pstate, constr->location)));
1021 : break;
1022 :
1023 6 : case CONSTR_ATTR_DEFERRABLE:
1024 : case CONSTR_ATTR_NOT_DEFERRABLE:
1025 : case CONSTR_ATTR_DEFERRED:
1026 : case CONSTR_ATTR_IMMEDIATE:
1027 6 : ereport(ERROR,
1028 : (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1029 : errmsg("specifying constraint deferrability not supported for domains"),
1030 : parser_errposition(pstate, constr->location)));
1031 : break;
1032 :
1033 6 : case CONSTR_GENERATED:
1034 : case CONSTR_IDENTITY:
1035 6 : ereport(ERROR,
1036 : (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1037 : errmsg("specifying GENERATED not supported for domains"),
1038 : parser_errposition(pstate, constr->location)));
1039 : break;
1040 :
1041 12 : case CONSTR_ATTR_ENFORCED:
1042 : case CONSTR_ATTR_NOT_ENFORCED:
1043 12 : ereport(ERROR,
1044 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1045 : errmsg("specifying constraint enforceability not supported for domains"),
1046 : parser_errposition(pstate, constr->location)));
1047 : break;
1048 :
1049 : /* no default, to let compiler warn about missing case */
1050 : }
1051 : }
1052 :
1053 : /* Allocate OID for array type */
1054 1360 : domainArrayOid = AssignTypeArrayOid();
1055 :
1056 : /*
1057 : * Have TypeCreate do all the real work.
1058 : */
1059 : address =
1060 1360 : TypeCreate(InvalidOid, /* no predetermined type OID */
1061 : domainName, /* type name */
1062 : domainNamespace, /* namespace */
1063 : InvalidOid, /* relation oid (n/a here) */
1064 : 0, /* relation kind (ditto) */
1065 : GetUserId(), /* owner's ID */
1066 : internalLength, /* internal size */
1067 : TYPTYPE_DOMAIN, /* type-type (domain type) */
1068 : category, /* type-category */
1069 : false, /* domain types are never preferred */
1070 : delimiter, /* array element delimiter */
1071 : inputProcedure, /* input procedure */
1072 : outputProcedure, /* output procedure */
1073 : receiveProcedure, /* receive procedure */
1074 : sendProcedure, /* send procedure */
1075 : InvalidOid, /* typmodin procedure - none */
1076 : InvalidOid, /* typmodout procedure - none */
1077 : analyzeProcedure, /* analyze procedure */
1078 : InvalidOid, /* subscript procedure - none */
1079 : InvalidOid, /* no array element type */
1080 : false, /* this isn't an array */
1081 : domainArrayOid, /* array type we are about to create */
1082 : basetypeoid, /* base type ID */
1083 : defaultValue, /* default type value (text) */
1084 : defaultValueBin, /* default type value (binary) */
1085 : byValue, /* passed by value */
1086 : alignment, /* required alignment */
1087 : storage, /* TOAST strategy */
1088 : basetypeMod, /* typeMod value */
1089 : typNDims, /* Array dimensions for base type */
1090 : typNotNull, /* Type NOT NULL */
1091 : domaincoll); /* type's collation */
1092 :
1093 : /*
1094 : * Create the array type that goes with it.
1095 : */
1096 1360 : domainArrayName = makeArrayTypeName(domainName, domainNamespace);
1097 :
1098 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for arrays */
1099 1360 : alignment = (alignment == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
1100 :
1101 1360 : TypeCreate(domainArrayOid, /* force assignment of this type OID */
1102 : domainArrayName, /* type name */
1103 : domainNamespace, /* namespace */
1104 : InvalidOid, /* relation oid (n/a here) */
1105 : 0, /* relation kind (ditto) */
1106 : GetUserId(), /* owner's ID */
1107 : -1, /* internal size (always varlena) */
1108 : TYPTYPE_BASE, /* type-type (base type) */
1109 : TYPCATEGORY_ARRAY, /* type-category (array) */
1110 : false, /* array types are never preferred */
1111 : delimiter, /* array element delimiter */
1112 : F_ARRAY_IN, /* input procedure */
1113 : F_ARRAY_OUT, /* output procedure */
1114 : F_ARRAY_RECV, /* receive procedure */
1115 : F_ARRAY_SEND, /* send procedure */
1116 : InvalidOid, /* typmodin procedure - none */
1117 : InvalidOid, /* typmodout procedure - none */
1118 : F_ARRAY_TYPANALYZE, /* analyze procedure */
1119 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
1120 : address.objectId, /* element type ID */
1121 : true, /* yes this is an array type */
1122 : InvalidOid, /* no further array type */
1123 : InvalidOid, /* base type ID */
1124 : NULL, /* never a default type value */
1125 : NULL, /* binary default isn't sent either */
1126 : false, /* never passed by value */
1127 : alignment, /* see above */
1128 : TYPSTORAGE_EXTENDED, /* ARRAY is always toastable */
1129 : -1, /* typMod (Domains only) */
1130 : 0, /* Array dimensions of typbasetype */
1131 : false, /* Type NOT NULL */
1132 : domaincoll); /* type's collation */
1133 :
1134 1360 : pfree(domainArrayName);
1135 :
1136 : /*
1137 : * Process constraints which refer to the domain ID returned by TypeCreate
1138 : */
1139 2160 : foreach(listptr, schema)
1140 : {
1141 800 : Constraint *constr = lfirst(listptr);
1142 :
1143 : /* it must be a Constraint, per check above */
1144 :
1145 800 : switch (constr->contype)
1146 : {
1147 554 : case CONSTR_CHECK:
1148 554 : domainAddCheckConstraint(address.objectId, domainNamespace,
1149 : basetypeoid, basetypeMod,
1150 : constr, domainName, NULL);
1151 554 : break;
1152 :
1153 82 : case CONSTR_NOTNULL:
1154 82 : domainAddNotNullConstraint(address.objectId, domainNamespace,
1155 : basetypeoid, basetypeMod,
1156 : constr, domainName, NULL);
1157 82 : break;
1158 :
1159 : /* Other constraint types were fully processed above */
1160 :
1161 164 : default:
1162 164 : break;
1163 : }
1164 :
1165 : /* CCI so we can detect duplicate constraint names */
1166 800 : CommandCounterIncrement();
1167 : }
1168 :
1169 : /*
1170 : * Now we can clean up.
1171 : */
1172 1360 : ReleaseSysCache(typeTup);
1173 :
1174 1360 : return address;
1175 : }
1176 :
1177 :
1178 : /*
1179 : * DefineEnum
1180 : * Registers a new enum.
1181 : */
1182 : ObjectAddress
1183 444 : DefineEnum(CreateEnumStmt *stmt)
1184 : {
1185 : char *enumName;
1186 : char *enumArrayName;
1187 : Oid enumNamespace;
1188 : AclResult aclresult;
1189 : Oid old_type_oid;
1190 : Oid enumArrayOid;
1191 : ObjectAddress enumTypeAddr;
1192 :
1193 : /* Convert list of names to a name and namespace */
1194 444 : enumNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
1195 : &enumName);
1196 :
1197 : /* Check we have creation rights in target namespace */
1198 444 : aclresult = object_aclcheck(NamespaceRelationId, enumNamespace, GetUserId(), ACL_CREATE);
1199 444 : if (aclresult != ACLCHECK_OK)
1200 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
1201 0 : get_namespace_name(enumNamespace));
1202 :
1203 : /*
1204 : * Check for collision with an existing type name. If there is one and
1205 : * it's an autogenerated array, we can rename it out of the way.
1206 : */
1207 444 : old_type_oid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
1208 : CStringGetDatum(enumName),
1209 : ObjectIdGetDatum(enumNamespace));
1210 444 : if (OidIsValid(old_type_oid))
1211 : {
1212 8 : if (!moveArrayTypeName(old_type_oid, enumName, enumNamespace))
1213 0 : ereport(ERROR,
1214 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1215 : errmsg("type \"%s\" already exists", enumName)));
1216 : }
1217 :
1218 : /* Allocate OID for array type */
1219 444 : enumArrayOid = AssignTypeArrayOid();
1220 :
1221 : /* Create the pg_type entry */
1222 : enumTypeAddr =
1223 444 : TypeCreate(InvalidOid, /* no predetermined type OID */
1224 : enumName, /* type name */
1225 : enumNamespace, /* namespace */
1226 : InvalidOid, /* relation oid (n/a here) */
1227 : 0, /* relation kind (ditto) */
1228 : GetUserId(), /* owner's ID */
1229 : sizeof(Oid), /* internal size */
1230 : TYPTYPE_ENUM, /* type-type (enum type) */
1231 : TYPCATEGORY_ENUM, /* type-category (enum type) */
1232 : false, /* enum types are never preferred */
1233 : DEFAULT_TYPDELIM, /* array element delimiter */
1234 : F_ENUM_IN, /* input procedure */
1235 : F_ENUM_OUT, /* output procedure */
1236 : F_ENUM_RECV, /* receive procedure */
1237 : F_ENUM_SEND, /* send procedure */
1238 : InvalidOid, /* typmodin procedure - none */
1239 : InvalidOid, /* typmodout procedure - none */
1240 : InvalidOid, /* analyze procedure - default */
1241 : InvalidOid, /* subscript procedure - none */
1242 : InvalidOid, /* element type ID */
1243 : false, /* this is not an array type */
1244 : enumArrayOid, /* array type we are about to create */
1245 : InvalidOid, /* base type ID (only for domains) */
1246 : NULL, /* never a default type value */
1247 : NULL, /* binary default isn't sent either */
1248 : true, /* always passed by value */
1249 : TYPALIGN_INT, /* int alignment */
1250 : TYPSTORAGE_PLAIN, /* TOAST strategy always plain */
1251 : -1, /* typMod (Domains only) */
1252 : 0, /* Array dimensions of typbasetype */
1253 : false, /* Type NOT NULL */
1254 : InvalidOid); /* type's collation */
1255 :
1256 : /* Enter the enum's values into pg_enum */
1257 442 : EnumValuesCreate(enumTypeAddr.objectId, stmt->vals);
1258 :
1259 : /*
1260 : * Create the array type that goes with it.
1261 : */
1262 436 : enumArrayName = makeArrayTypeName(enumName, enumNamespace);
1263 :
1264 436 : TypeCreate(enumArrayOid, /* force assignment of this type OID */
1265 : enumArrayName, /* type name */
1266 : enumNamespace, /* namespace */
1267 : InvalidOid, /* relation oid (n/a here) */
1268 : 0, /* relation kind (ditto) */
1269 : GetUserId(), /* owner's ID */
1270 : -1, /* internal size (always varlena) */
1271 : TYPTYPE_BASE, /* type-type (base type) */
1272 : TYPCATEGORY_ARRAY, /* type-category (array) */
1273 : false, /* array types are never preferred */
1274 : DEFAULT_TYPDELIM, /* array element delimiter */
1275 : F_ARRAY_IN, /* input procedure */
1276 : F_ARRAY_OUT, /* output procedure */
1277 : F_ARRAY_RECV, /* receive procedure */
1278 : F_ARRAY_SEND, /* send procedure */
1279 : InvalidOid, /* typmodin procedure - none */
1280 : InvalidOid, /* typmodout procedure - none */
1281 : F_ARRAY_TYPANALYZE, /* analyze procedure */
1282 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
1283 : enumTypeAddr.objectId, /* element type ID */
1284 : true, /* yes this is an array type */
1285 : InvalidOid, /* no further array type */
1286 : InvalidOid, /* base type ID */
1287 : NULL, /* never a default type value */
1288 : NULL, /* binary default isn't sent either */
1289 : false, /* never passed by value */
1290 : TYPALIGN_INT, /* enums have int align, so do their arrays */
1291 : TYPSTORAGE_EXTENDED, /* ARRAY is always toastable */
1292 : -1, /* typMod (Domains only) */
1293 : 0, /* Array dimensions of typbasetype */
1294 : false, /* Type NOT NULL */
1295 : InvalidOid); /* type's collation */
1296 :
1297 436 : pfree(enumArrayName);
1298 :
1299 436 : return enumTypeAddr;
1300 : }
1301 :
1302 : /*
1303 : * AlterEnum
1304 : * Adds a new label to an existing enum.
1305 : */
1306 : ObjectAddress
1307 396 : AlterEnum(AlterEnumStmt *stmt)
1308 : {
1309 : Oid enum_type_oid;
1310 : TypeName *typename;
1311 : HeapTuple tup;
1312 : ObjectAddress address;
1313 :
1314 : /* Make a TypeName so we can use standard type lookup machinery */
1315 396 : typename = makeTypeNameFromNameList(stmt->typeName);
1316 396 : enum_type_oid = typenameTypeId(NULL, typename);
1317 :
1318 396 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(enum_type_oid));
1319 396 : if (!HeapTupleIsValid(tup))
1320 0 : elog(ERROR, "cache lookup failed for type %u", enum_type_oid);
1321 :
1322 : /* Check it's an enum and check user has permission to ALTER the enum */
1323 396 : checkEnumOwner(tup);
1324 :
1325 396 : ReleaseSysCache(tup);
1326 :
1327 396 : if (stmt->oldVal)
1328 : {
1329 : /* Rename an existing label */
1330 24 : RenameEnumLabel(enum_type_oid, stmt->oldVal, stmt->newVal);
1331 : }
1332 : else
1333 : {
1334 : /* Add a new label */
1335 372 : AddEnumLabel(enum_type_oid, stmt->newVal,
1336 372 : stmt->newValNeighbor, stmt->newValIsAfter,
1337 372 : stmt->skipIfNewValExists);
1338 : }
1339 :
1340 366 : InvokeObjectPostAlterHook(TypeRelationId, enum_type_oid, 0);
1341 :
1342 366 : ObjectAddressSet(address, TypeRelationId, enum_type_oid);
1343 :
1344 366 : return address;
1345 : }
1346 :
1347 :
1348 : /*
1349 : * checkEnumOwner
1350 : *
1351 : * Check that the type is actually an enum and that the current user
1352 : * has permission to do ALTER TYPE on it. Throw an error if not.
1353 : */
1354 : static void
1355 396 : checkEnumOwner(HeapTuple tup)
1356 : {
1357 396 : Form_pg_type typTup = (Form_pg_type) GETSTRUCT(tup);
1358 :
1359 : /* Check that this is actually an enum */
1360 396 : if (typTup->typtype != TYPTYPE_ENUM)
1361 0 : ereport(ERROR,
1362 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1363 : errmsg("%s is not an enum",
1364 : format_type_be(typTup->oid))));
1365 :
1366 : /* Permission check: must own type */
1367 396 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
1368 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
1369 396 : }
1370 :
1371 :
1372 : /*
1373 : * DefineRange
1374 : * Registers a new range type.
1375 : *
1376 : * Perhaps it might be worthwhile to set pg_type.typelem to the base type,
1377 : * and likewise on multiranges to set it to the range type. But having a
1378 : * non-zero typelem is treated elsewhere as a synonym for being an array,
1379 : * and users might have queries with that same assumption.
1380 : */
1381 : ObjectAddress
1382 184 : DefineRange(ParseState *pstate, CreateRangeStmt *stmt)
1383 : {
1384 : char *typeName;
1385 : Oid typeNamespace;
1386 : Oid typoid;
1387 : char *rangeArrayName;
1388 184 : char *multirangeTypeName = NULL;
1389 : char *multirangeArrayName;
1390 184 : Oid multirangeNamespace = InvalidOid;
1391 : Oid rangeArrayOid;
1392 : Oid multirangeOid;
1393 : Oid multirangeArrayOid;
1394 184 : Oid rangeSubtype = InvalidOid;
1395 184 : List *rangeSubOpclassName = NIL;
1396 184 : List *rangeCollationName = NIL;
1397 184 : List *rangeCanonicalName = NIL;
1398 184 : List *rangeSubtypeDiffName = NIL;
1399 : Oid rangeSubOpclass;
1400 : Oid rangeCollation;
1401 : regproc rangeCanonical;
1402 : regproc rangeSubtypeDiff;
1403 : int16 subtyplen;
1404 : bool subtypbyval;
1405 : char subtypalign;
1406 : char alignment;
1407 : AclResult aclresult;
1408 : ListCell *lc;
1409 : ObjectAddress address;
1410 : ObjectAddress mltrngaddress PG_USED_FOR_ASSERTS_ONLY;
1411 184 : Oid rangeConstruct2Oid = InvalidOid;
1412 184 : Oid rangeConstruct3Oid = InvalidOid;
1413 184 : Oid mltrngConstruct0Oid = InvalidOid;
1414 184 : Oid mltrngConstruct1Oid = InvalidOid;
1415 184 : Oid mltrngConstruct2Oid = InvalidOid;
1416 : Oid castFuncOid;
1417 :
1418 : /* Convert list of names to a name and namespace */
1419 184 : typeNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
1420 : &typeName);
1421 :
1422 : /* Check we have creation rights in target namespace */
1423 184 : aclresult = object_aclcheck(NamespaceRelationId, typeNamespace, GetUserId(), ACL_CREATE);
1424 184 : if (aclresult != ACLCHECK_OK)
1425 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
1426 0 : get_namespace_name(typeNamespace));
1427 :
1428 : /*
1429 : * Look to see if type already exists.
1430 : */
1431 184 : typoid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
1432 : CStringGetDatum(typeName),
1433 : ObjectIdGetDatum(typeNamespace));
1434 :
1435 : /*
1436 : * If it's not a shell, see if it's an autogenerated array type, and if so
1437 : * rename it out of the way.
1438 : */
1439 184 : if (OidIsValid(typoid) && get_typisdefined(typoid))
1440 : {
1441 0 : if (moveArrayTypeName(typoid, typeName, typeNamespace))
1442 0 : typoid = InvalidOid;
1443 : else
1444 0 : ereport(ERROR,
1445 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1446 : errmsg("type \"%s\" already exists", typeName)));
1447 : }
1448 :
1449 : /*
1450 : * Unlike DefineType(), we don't insist on a shell type existing first, as
1451 : * it's only needed if the user wants to specify a canonical function.
1452 : */
1453 :
1454 : /* Extract the parameters from the parameter list */
1455 496 : foreach(lc, stmt->params)
1456 : {
1457 312 : DefElem *defel = (DefElem *) lfirst(lc);
1458 :
1459 312 : if (strcmp(defel->defname, "subtype") == 0)
1460 : {
1461 184 : if (OidIsValid(rangeSubtype))
1462 0 : errorConflictingDefElem(defel, pstate);
1463 : /* we can look up the subtype name immediately */
1464 184 : rangeSubtype = typenameTypeId(NULL, defGetTypeName(defel));
1465 : }
1466 128 : else if (strcmp(defel->defname, "subtype_opclass") == 0)
1467 : {
1468 8 : if (rangeSubOpclassName != NIL)
1469 0 : errorConflictingDefElem(defel, pstate);
1470 8 : rangeSubOpclassName = defGetQualifiedName(defel);
1471 : }
1472 120 : else if (strcmp(defel->defname, "collation") == 0)
1473 : {
1474 70 : if (rangeCollationName != NIL)
1475 0 : errorConflictingDefElem(defel, pstate);
1476 70 : rangeCollationName = defGetQualifiedName(defel);
1477 : }
1478 50 : else if (strcmp(defel->defname, "canonical") == 0)
1479 : {
1480 0 : if (rangeCanonicalName != NIL)
1481 0 : errorConflictingDefElem(defel, pstate);
1482 0 : rangeCanonicalName = defGetQualifiedName(defel);
1483 : }
1484 50 : else if (strcmp(defel->defname, "subtype_diff") == 0)
1485 : {
1486 14 : if (rangeSubtypeDiffName != NIL)
1487 0 : errorConflictingDefElem(defel, pstate);
1488 14 : rangeSubtypeDiffName = defGetQualifiedName(defel);
1489 : }
1490 36 : else if (strcmp(defel->defname, "multirange_type_name") == 0)
1491 : {
1492 36 : if (multirangeTypeName != NULL)
1493 0 : errorConflictingDefElem(defel, pstate);
1494 : /* we can look up the subtype name immediately */
1495 36 : multirangeNamespace = QualifiedNameGetCreationNamespace(defGetQualifiedName(defel),
1496 : &multirangeTypeName);
1497 : }
1498 : else
1499 0 : ereport(ERROR,
1500 : (errcode(ERRCODE_SYNTAX_ERROR),
1501 : errmsg("type attribute \"%s\" not recognized",
1502 : defel->defname)));
1503 : }
1504 :
1505 : /* Must have a subtype */
1506 184 : if (!OidIsValid(rangeSubtype))
1507 0 : ereport(ERROR,
1508 : (errcode(ERRCODE_SYNTAX_ERROR),
1509 : errmsg("type attribute \"subtype\" is required")));
1510 : /* disallow ranges of pseudotypes */
1511 184 : if (get_typtype(rangeSubtype) == TYPTYPE_PSEUDO)
1512 0 : ereport(ERROR,
1513 : (errcode(ERRCODE_DATATYPE_MISMATCH),
1514 : errmsg("range subtype cannot be %s",
1515 : format_type_be(rangeSubtype))));
1516 :
1517 : /* Identify subopclass */
1518 184 : rangeSubOpclass = findRangeSubOpclass(rangeSubOpclassName, rangeSubtype);
1519 :
1520 : /* Identify collation to use, if any */
1521 184 : if (type_is_collatable(rangeSubtype))
1522 : {
1523 78 : if (rangeCollationName != NIL)
1524 70 : rangeCollation = get_collation_oid(rangeCollationName, false);
1525 : else
1526 8 : rangeCollation = get_typcollation(rangeSubtype);
1527 : }
1528 : else
1529 : {
1530 106 : if (rangeCollationName != NIL)
1531 0 : ereport(ERROR,
1532 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1533 : errmsg("range collation specified but subtype does not support collation")));
1534 106 : rangeCollation = InvalidOid;
1535 : }
1536 :
1537 : /* Identify support functions, if provided */
1538 184 : if (rangeCanonicalName != NIL)
1539 : {
1540 0 : if (!OidIsValid(typoid))
1541 0 : ereport(ERROR,
1542 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1543 : errmsg("cannot specify a canonical function without a pre-created shell type"),
1544 : errhint("Create the type as a shell type, then create its canonicalization function, then do a full CREATE TYPE.")));
1545 0 : rangeCanonical = findRangeCanonicalFunction(rangeCanonicalName,
1546 : typoid);
1547 : }
1548 : else
1549 184 : rangeCanonical = InvalidOid;
1550 :
1551 184 : if (rangeSubtypeDiffName != NIL)
1552 14 : rangeSubtypeDiff = findRangeSubtypeDiffFunction(rangeSubtypeDiffName,
1553 : rangeSubtype);
1554 : else
1555 170 : rangeSubtypeDiff = InvalidOid;
1556 :
1557 178 : get_typlenbyvalalign(rangeSubtype,
1558 : &subtyplen, &subtypbyval, &subtypalign);
1559 :
1560 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for ranges */
1561 178 : alignment = (subtypalign == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
1562 :
1563 : /* Allocate OID for array type, its multirange, and its multirange array */
1564 178 : rangeArrayOid = AssignTypeArrayOid();
1565 178 : multirangeOid = AssignTypeMultirangeOid();
1566 178 : multirangeArrayOid = AssignTypeMultirangeArrayOid();
1567 :
1568 : /* Create the pg_type entry */
1569 : address =
1570 178 : TypeCreate(InvalidOid, /* no predetermined type OID */
1571 : typeName, /* type name */
1572 : typeNamespace, /* namespace */
1573 : InvalidOid, /* relation oid (n/a here) */
1574 : 0, /* relation kind (ditto) */
1575 : GetUserId(), /* owner's ID */
1576 : -1, /* internal size (always varlena) */
1577 : TYPTYPE_RANGE, /* type-type (range type) */
1578 : TYPCATEGORY_RANGE, /* type-category (range type) */
1579 : false, /* range types are never preferred */
1580 : DEFAULT_TYPDELIM, /* array element delimiter */
1581 : F_RANGE_IN, /* input procedure */
1582 : F_RANGE_OUT, /* output procedure */
1583 : F_RANGE_RECV, /* receive procedure */
1584 : F_RANGE_SEND, /* send procedure */
1585 : InvalidOid, /* typmodin procedure - none */
1586 : InvalidOid, /* typmodout procedure - none */
1587 : F_RANGE_TYPANALYZE, /* analyze procedure */
1588 : InvalidOid, /* subscript procedure - none */
1589 : InvalidOid, /* element type ID - none */
1590 : false, /* this is not an array type */
1591 : rangeArrayOid, /* array type we are about to create */
1592 : InvalidOid, /* base type ID (only for domains) */
1593 : NULL, /* never a default type value */
1594 : NULL, /* no binary form available either */
1595 : false, /* never passed by value */
1596 : alignment, /* alignment */
1597 : TYPSTORAGE_EXTENDED, /* TOAST strategy (always extended) */
1598 : -1, /* typMod (Domains only) */
1599 : 0, /* Array dimensions of typbasetype */
1600 : false, /* Type NOT NULL */
1601 : InvalidOid); /* type's collation (ranges never have one) */
1602 : Assert(typoid == InvalidOid || typoid == address.objectId);
1603 178 : typoid = address.objectId;
1604 :
1605 : /* Create the multirange that goes with it */
1606 178 : if (multirangeTypeName)
1607 : {
1608 : Oid old_typoid;
1609 :
1610 : /*
1611 : * Look to see if multirange type already exists.
1612 : */
1613 36 : old_typoid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
1614 : CStringGetDatum(multirangeTypeName),
1615 : ObjectIdGetDatum(multirangeNamespace));
1616 :
1617 : /*
1618 : * If it's not a shell, see if it's an autogenerated array type, and
1619 : * if so rename it out of the way.
1620 : */
1621 36 : if (OidIsValid(old_typoid) && get_typisdefined(old_typoid))
1622 : {
1623 12 : if (!moveArrayTypeName(old_typoid, multirangeTypeName, multirangeNamespace))
1624 6 : ereport(ERROR,
1625 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1626 : errmsg("type \"%s\" already exists", multirangeTypeName)));
1627 : }
1628 : }
1629 : else
1630 : {
1631 : /* Generate multirange name automatically */
1632 142 : multirangeNamespace = typeNamespace;
1633 142 : multirangeTypeName = makeMultirangeTypeName(typeName, multirangeNamespace);
1634 : }
1635 :
1636 : mltrngaddress =
1637 160 : TypeCreate(multirangeOid, /* force assignment of this type OID */
1638 : multirangeTypeName, /* type name */
1639 : multirangeNamespace, /* namespace */
1640 : InvalidOid, /* relation oid (n/a here) */
1641 : 0, /* relation kind (ditto) */
1642 : GetUserId(), /* owner's ID */
1643 : -1, /* internal size (always varlena) */
1644 : TYPTYPE_MULTIRANGE, /* type-type (multirange type) */
1645 : TYPCATEGORY_RANGE, /* type-category (range type) */
1646 : false, /* multirange types are never preferred */
1647 : DEFAULT_TYPDELIM, /* array element delimiter */
1648 : F_MULTIRANGE_IN, /* input procedure */
1649 : F_MULTIRANGE_OUT, /* output procedure */
1650 : F_MULTIRANGE_RECV, /* receive procedure */
1651 : F_MULTIRANGE_SEND, /* send procedure */
1652 : InvalidOid, /* typmodin procedure - none */
1653 : InvalidOid, /* typmodout procedure - none */
1654 : F_MULTIRANGE_TYPANALYZE, /* analyze procedure */
1655 : InvalidOid, /* subscript procedure - none */
1656 : InvalidOid, /* element type ID - none */
1657 : false, /* this is not an array type */
1658 : multirangeArrayOid, /* array type we are about to create */
1659 : InvalidOid, /* base type ID (only for domains) */
1660 : NULL, /* never a default type value */
1661 : NULL, /* no binary form available either */
1662 : false, /* never passed by value */
1663 : alignment, /* alignment */
1664 : 'x', /* TOAST strategy (always extended) */
1665 : -1, /* typMod (Domains only) */
1666 : 0, /* Array dimensions of typbasetype */
1667 : false, /* Type NOT NULL */
1668 : InvalidOid); /* type's collation (ranges never have one) */
1669 : Assert(multirangeOid == mltrngaddress.objectId);
1670 :
1671 : /*
1672 : * Create the array type that goes with it.
1673 : */
1674 160 : rangeArrayName = makeArrayTypeName(typeName, typeNamespace);
1675 :
1676 160 : TypeCreate(rangeArrayOid, /* force assignment of this type OID */
1677 : rangeArrayName, /* type name */
1678 : typeNamespace, /* namespace */
1679 : InvalidOid, /* relation oid (n/a here) */
1680 : 0, /* relation kind (ditto) */
1681 : GetUserId(), /* owner's ID */
1682 : -1, /* internal size (always varlena) */
1683 : TYPTYPE_BASE, /* type-type (base type) */
1684 : TYPCATEGORY_ARRAY, /* type-category (array) */
1685 : false, /* array types are never preferred */
1686 : DEFAULT_TYPDELIM, /* array element delimiter */
1687 : F_ARRAY_IN, /* input procedure */
1688 : F_ARRAY_OUT, /* output procedure */
1689 : F_ARRAY_RECV, /* receive procedure */
1690 : F_ARRAY_SEND, /* send procedure */
1691 : InvalidOid, /* typmodin procedure - none */
1692 : InvalidOid, /* typmodout procedure - none */
1693 : F_ARRAY_TYPANALYZE, /* analyze procedure */
1694 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
1695 : typoid, /* element type ID */
1696 : true, /* yes this is an array type */
1697 : InvalidOid, /* no further array type */
1698 : InvalidOid, /* base type ID */
1699 : NULL, /* never a default type value */
1700 : NULL, /* binary default isn't sent either */
1701 : false, /* never passed by value */
1702 : alignment, /* alignment - same as range's */
1703 : TYPSTORAGE_EXTENDED, /* ARRAY is always toastable */
1704 : -1, /* typMod (Domains only) */
1705 : 0, /* Array dimensions of typbasetype */
1706 : false, /* Type NOT NULL */
1707 : InvalidOid); /* typcollation */
1708 :
1709 160 : pfree(rangeArrayName);
1710 :
1711 : /* Create the multirange's array type */
1712 :
1713 160 : multirangeArrayName = makeArrayTypeName(multirangeTypeName, typeNamespace);
1714 :
1715 160 : TypeCreate(multirangeArrayOid, /* force assignment of this type OID */
1716 : multirangeArrayName, /* type name */
1717 : multirangeNamespace, /* namespace */
1718 : InvalidOid, /* relation oid (n/a here) */
1719 : 0, /* relation kind (ditto) */
1720 : GetUserId(), /* owner's ID */
1721 : -1, /* internal size (always varlena) */
1722 : TYPTYPE_BASE, /* type-type (base type) */
1723 : TYPCATEGORY_ARRAY, /* type-category (array) */
1724 : false, /* array types are never preferred */
1725 : DEFAULT_TYPDELIM, /* array element delimiter */
1726 : F_ARRAY_IN, /* input procedure */
1727 : F_ARRAY_OUT, /* output procedure */
1728 : F_ARRAY_RECV, /* receive procedure */
1729 : F_ARRAY_SEND, /* send procedure */
1730 : InvalidOid, /* typmodin procedure - none */
1731 : InvalidOid, /* typmodout procedure - none */
1732 : F_ARRAY_TYPANALYZE, /* analyze procedure */
1733 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
1734 : multirangeOid, /* element type ID */
1735 : true, /* yes this is an array type */
1736 : InvalidOid, /* no further array type */
1737 : InvalidOid, /* base type ID */
1738 : NULL, /* never a default type value */
1739 : NULL, /* binary default isn't sent either */
1740 : false, /* never passed by value */
1741 : alignment, /* alignment - same as range's */
1742 : 'x', /* ARRAY is always toastable */
1743 : -1, /* typMod (Domains only) */
1744 : 0, /* Array dimensions of typbasetype */
1745 : false, /* Type NOT NULL */
1746 : InvalidOid); /* typcollation */
1747 :
1748 : /* Ensure these new types are visible to ProcedureCreate */
1749 160 : CommandCounterIncrement();
1750 :
1751 : /* And create the constructor functions for this range type */
1752 160 : makeRangeConstructors(typeName, typeNamespace, typoid, rangeSubtype,
1753 : &rangeConstruct2Oid, &rangeConstruct3Oid);
1754 160 : makeMultirangeConstructors(multirangeTypeName, typeNamespace,
1755 : multirangeOid, typoid, rangeArrayOid,
1756 : &mltrngConstruct0Oid, &mltrngConstruct1Oid, &mltrngConstruct2Oid);
1757 160 : castFuncOid = mltrngConstruct1Oid;
1758 :
1759 : /* Create the entry in pg_range */
1760 160 : RangeCreate(typoid, rangeSubtype, rangeCollation, rangeSubOpclass,
1761 : rangeCanonical, rangeSubtypeDiff, multirangeOid,
1762 : rangeConstruct2Oid, rangeConstruct3Oid,
1763 : mltrngConstruct0Oid, mltrngConstruct1Oid, mltrngConstruct2Oid);
1764 :
1765 : /* Create cast from the range type to its multirange type */
1766 160 : CastCreate(typoid, multirangeOid, castFuncOid, InvalidOid, InvalidOid,
1767 : COERCION_CODE_EXPLICIT, COERCION_METHOD_FUNCTION,
1768 : DEPENDENCY_INTERNAL);
1769 :
1770 160 : pfree(multirangeArrayName);
1771 :
1772 160 : return address;
1773 : }
1774 :
1775 : /*
1776 : * Because there may exist several range types over the same subtype, the
1777 : * range type can't be uniquely determined from the subtype. So it's
1778 : * impossible to define a polymorphic constructor; we have to generate new
1779 : * constructor functions explicitly for each range type.
1780 : *
1781 : * We actually define 2 functions, with 2 through 3 arguments. This is just
1782 : * to offer more convenience for the user.
1783 : *
1784 : * The OIDs of the created functions are returned through the pointer
1785 : * arguments.
1786 : */
1787 : static void
1788 160 : makeRangeConstructors(const char *name, Oid namespace,
1789 : Oid rangeOid, Oid subtype,
1790 : Oid *rangeConstruct2_p, Oid *rangeConstruct3_p)
1791 : {
1792 : static const char *const prosrc[2] = {"range_constructor2",
1793 : "range_constructor3"};
1794 : static const int pronargs[2] = {2, 3};
1795 :
1796 : Oid constructorArgTypes[3];
1797 : ObjectAddress myself,
1798 : referenced;
1799 : int i;
1800 :
1801 160 : constructorArgTypes[0] = subtype;
1802 160 : constructorArgTypes[1] = subtype;
1803 160 : constructorArgTypes[2] = TEXTOID;
1804 :
1805 160 : referenced.classId = TypeRelationId;
1806 160 : referenced.objectId = rangeOid;
1807 160 : referenced.objectSubId = 0;
1808 :
1809 480 : for (i = 0; i < lengthof(prosrc); i++)
1810 : {
1811 : oidvector *constructorArgTypesVector;
1812 :
1813 320 : constructorArgTypesVector = buildoidvector(constructorArgTypes,
1814 320 : pronargs[i]);
1815 :
1816 320 : myself = ProcedureCreate(name, /* name: same as range type */
1817 : namespace, /* namespace */
1818 : false, /* replace */
1819 : false, /* returns set */
1820 : rangeOid, /* return type */
1821 : BOOTSTRAP_SUPERUSERID, /* proowner */
1822 : INTERNALlanguageId, /* language */
1823 : F_FMGR_INTERNAL_VALIDATOR, /* language validator */
1824 320 : prosrc[i], /* prosrc */
1825 : NULL, /* probin */
1826 : NULL, /* prosqlbody */
1827 : PROKIND_FUNCTION,
1828 : false, /* security_definer */
1829 : false, /* leakproof */
1830 : false, /* isStrict */
1831 : PROVOLATILE_IMMUTABLE, /* volatility */
1832 : PROPARALLEL_SAFE, /* parallel safety */
1833 : constructorArgTypesVector, /* parameterTypes */
1834 : PointerGetDatum(NULL), /* allParameterTypes */
1835 : PointerGetDatum(NULL), /* parameterModes */
1836 : PointerGetDatum(NULL), /* parameterNames */
1837 : NIL, /* parameterDefaults */
1838 : PointerGetDatum(NULL), /* trftypes */
1839 : NIL, /* trfoids */
1840 : PointerGetDatum(NULL), /* proconfig */
1841 : InvalidOid, /* prosupport */
1842 : 1.0, /* procost */
1843 : 0.0); /* prorows */
1844 :
1845 : /*
1846 : * Make the constructors internally-dependent on the range type so
1847 : * that they go away silently when the type is dropped. Note that
1848 : * pg_dump depends on this choice to avoid dumping the constructors.
1849 : */
1850 320 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1851 :
1852 320 : if (pronargs[i] == 2)
1853 160 : *rangeConstruct2_p = myself.objectId;
1854 160 : else if (pronargs[i] == 3)
1855 160 : *rangeConstruct3_p = myself.objectId;
1856 : }
1857 160 : }
1858 :
1859 : /*
1860 : * We make a separate multirange constructor for each range type
1861 : * so its name can include the base type, like range constructors do.
1862 : * If we had an anyrangearray polymorphic type we could use it here,
1863 : * but since each type has its own constructor name there's no need.
1864 : *
1865 : * The OIDs of the created functions are returned through the pointer
1866 : * arguments.
1867 : */
1868 : static void
1869 160 : makeMultirangeConstructors(const char *name, Oid namespace,
1870 : Oid multirangeOid, Oid rangeOid, Oid rangeArrayOid,
1871 : Oid *mltrngConstruct0_p, Oid *mltrngConstruct1_p, Oid *mltrngConstruct2_p)
1872 : {
1873 : ObjectAddress myself,
1874 : referenced;
1875 : oidvector *argtypes;
1876 : Datum allParamTypes;
1877 : ArrayType *allParameterTypes;
1878 : Datum paramModes;
1879 : ArrayType *parameterModes;
1880 :
1881 160 : referenced.classId = TypeRelationId;
1882 160 : referenced.objectId = multirangeOid;
1883 160 : referenced.objectSubId = 0;
1884 :
1885 : /* 0-arg constructor - for empty multiranges */
1886 160 : argtypes = buildoidvector(NULL, 0);
1887 160 : myself = ProcedureCreate(name, /* name: same as multirange type */
1888 : namespace,
1889 : false, /* replace */
1890 : false, /* returns set */
1891 : multirangeOid, /* return type */
1892 : BOOTSTRAP_SUPERUSERID, /* proowner */
1893 : INTERNALlanguageId, /* language */
1894 : F_FMGR_INTERNAL_VALIDATOR,
1895 : "multirange_constructor0", /* prosrc */
1896 : NULL, /* probin */
1897 : NULL, /* prosqlbody */
1898 : PROKIND_FUNCTION,
1899 : false, /* security_definer */
1900 : false, /* leakproof */
1901 : true, /* isStrict */
1902 : PROVOLATILE_IMMUTABLE, /* volatility */
1903 : PROPARALLEL_SAFE, /* parallel safety */
1904 : argtypes, /* parameterTypes */
1905 : PointerGetDatum(NULL), /* allParameterTypes */
1906 : PointerGetDatum(NULL), /* parameterModes */
1907 : PointerGetDatum(NULL), /* parameterNames */
1908 : NIL, /* parameterDefaults */
1909 : PointerGetDatum(NULL), /* trftypes */
1910 : NIL, /* trfoids */
1911 : PointerGetDatum(NULL), /* proconfig */
1912 : InvalidOid, /* prosupport */
1913 : 1.0, /* procost */
1914 : 0.0); /* prorows */
1915 :
1916 : /*
1917 : * Make the constructor internally-dependent on the multirange type so
1918 : * that they go away silently when the type is dropped. Note that pg_dump
1919 : * depends on this choice to avoid dumping the constructors.
1920 : */
1921 160 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1922 160 : *mltrngConstruct0_p = myself.objectId;
1923 160 : pfree(argtypes);
1924 :
1925 : /*
1926 : * 1-arg constructor - for casts
1927 : *
1928 : * In theory we shouldn't need both this and the vararg (n-arg)
1929 : * constructor, but having a separate 1-arg function lets us define casts
1930 : * against it.
1931 : */
1932 160 : argtypes = buildoidvector(&rangeOid, 1);
1933 160 : myself = ProcedureCreate(name, /* name: same as multirange type */
1934 : namespace,
1935 : false, /* replace */
1936 : false, /* returns set */
1937 : multirangeOid, /* return type */
1938 : BOOTSTRAP_SUPERUSERID, /* proowner */
1939 : INTERNALlanguageId, /* language */
1940 : F_FMGR_INTERNAL_VALIDATOR,
1941 : "multirange_constructor1", /* prosrc */
1942 : NULL, /* probin */
1943 : NULL, /* prosqlbody */
1944 : PROKIND_FUNCTION,
1945 : false, /* security_definer */
1946 : false, /* leakproof */
1947 : true, /* isStrict */
1948 : PROVOLATILE_IMMUTABLE, /* volatility */
1949 : PROPARALLEL_SAFE, /* parallel safety */
1950 : argtypes, /* parameterTypes */
1951 : PointerGetDatum(NULL), /* allParameterTypes */
1952 : PointerGetDatum(NULL), /* parameterModes */
1953 : PointerGetDatum(NULL), /* parameterNames */
1954 : NIL, /* parameterDefaults */
1955 : PointerGetDatum(NULL), /* trftypes */
1956 : NIL, /* trfoids */
1957 : PointerGetDatum(NULL), /* proconfig */
1958 : InvalidOid, /* prosupport */
1959 : 1.0, /* procost */
1960 : 0.0); /* prorows */
1961 : /* ditto */
1962 160 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1963 160 : *mltrngConstruct1_p = myself.objectId;
1964 160 : pfree(argtypes);
1965 :
1966 : /* n-arg constructor - vararg */
1967 160 : argtypes = buildoidvector(&rangeArrayOid, 1);
1968 160 : allParamTypes = ObjectIdGetDatum(rangeArrayOid);
1969 160 : allParameterTypes = construct_array_builtin(&allParamTypes, 1, OIDOID);
1970 160 : paramModes = CharGetDatum(FUNC_PARAM_VARIADIC);
1971 160 : parameterModes = construct_array_builtin(¶mModes, 1, CHAROID);
1972 160 : myself = ProcedureCreate(name, /* name: same as multirange type */
1973 : namespace,
1974 : false, /* replace */
1975 : false, /* returns set */
1976 : multirangeOid, /* return type */
1977 : BOOTSTRAP_SUPERUSERID, /* proowner */
1978 : INTERNALlanguageId, /* language */
1979 : F_FMGR_INTERNAL_VALIDATOR,
1980 : "multirange_constructor2", /* prosrc */
1981 : NULL, /* probin */
1982 : NULL, /* prosqlbody */
1983 : PROKIND_FUNCTION,
1984 : false, /* security_definer */
1985 : false, /* leakproof */
1986 : true, /* isStrict */
1987 : PROVOLATILE_IMMUTABLE, /* volatility */
1988 : PROPARALLEL_SAFE, /* parallel safety */
1989 : argtypes, /* parameterTypes */
1990 : PointerGetDatum(allParameterTypes), /* allParameterTypes */
1991 : PointerGetDatum(parameterModes), /* parameterModes */
1992 : PointerGetDatum(NULL), /* parameterNames */
1993 : NIL, /* parameterDefaults */
1994 : PointerGetDatum(NULL), /* trftypes */
1995 : NIL, /* trfoids */
1996 : PointerGetDatum(NULL), /* proconfig */
1997 : InvalidOid, /* prosupport */
1998 : 1.0, /* procost */
1999 : 0.0); /* prorows */
2000 : /* ditto */
2001 160 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
2002 160 : *mltrngConstruct2_p = myself.objectId;
2003 160 : pfree(argtypes);
2004 160 : pfree(allParameterTypes);
2005 160 : pfree(parameterModes);
2006 160 : }
2007 :
2008 : /*
2009 : * Find suitable I/O and other support functions for a type.
2010 : *
2011 : * typeOid is the type's OID (which will already exist, if only as a shell
2012 : * type).
2013 : */
2014 :
2015 : static Oid
2016 222 : findTypeInputFunction(List *procname, Oid typeOid)
2017 : {
2018 : Oid argList[3];
2019 : Oid procOid;
2020 : Oid procOid2;
2021 :
2022 : /*
2023 : * Input functions can take a single argument of type CSTRING, or three
2024 : * arguments (string, typioparam OID, typmod). Whine about ambiguity if
2025 : * both forms exist.
2026 : */
2027 222 : argList[0] = CSTRINGOID;
2028 222 : argList[1] = OIDOID;
2029 222 : argList[2] = INT4OID;
2030 :
2031 222 : procOid = LookupFuncName(procname, 1, argList, true);
2032 222 : procOid2 = LookupFuncName(procname, 3, argList, true);
2033 222 : if (OidIsValid(procOid))
2034 : {
2035 206 : if (OidIsValid(procOid2))
2036 0 : ereport(ERROR,
2037 : (errcode(ERRCODE_AMBIGUOUS_FUNCTION),
2038 : errmsg("type input function %s has multiple matches",
2039 : NameListToString(procname))));
2040 : }
2041 : else
2042 : {
2043 16 : procOid = procOid2;
2044 : /* If not found, reference the 1-argument signature in error msg */
2045 16 : if (!OidIsValid(procOid))
2046 0 : ereport(ERROR,
2047 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2048 : errmsg("function %s does not exist",
2049 : func_signature_string(procname, 1, NIL, argList))));
2050 : }
2051 :
2052 : /* Input functions must return the target type. */
2053 222 : if (get_func_rettype(procOid) != typeOid)
2054 6 : ereport(ERROR,
2055 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2056 : errmsg("type input function %s must return type %s",
2057 : NameListToString(procname), format_type_be(typeOid))));
2058 :
2059 : /*
2060 : * Print warnings if any of the type's I/O functions are marked volatile.
2061 : * There is a general assumption that I/O functions are stable or
2062 : * immutable; this allows us for example to mark record_in/record_out
2063 : * stable rather than volatile. Ideally we would throw errors not just
2064 : * warnings here; but since this check is new as of 9.5, and since the
2065 : * volatility marking might be just an error-of-omission and not a true
2066 : * indication of how the function behaves, we'll let it pass as a warning
2067 : * for now.
2068 : */
2069 216 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2070 0 : ereport(WARNING,
2071 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2072 : errmsg("type input function %s should not be volatile",
2073 : NameListToString(procname))));
2074 :
2075 216 : return procOid;
2076 : }
2077 :
2078 : static Oid
2079 216 : findTypeOutputFunction(List *procname, Oid typeOid)
2080 : {
2081 : Oid argList[1];
2082 : Oid procOid;
2083 :
2084 : /*
2085 : * Output functions always take a single argument of the type and return
2086 : * cstring.
2087 : */
2088 216 : argList[0] = typeOid;
2089 :
2090 216 : procOid = LookupFuncName(procname, 1, argList, true);
2091 216 : if (!OidIsValid(procOid))
2092 0 : ereport(ERROR,
2093 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2094 : errmsg("function %s does not exist",
2095 : func_signature_string(procname, 1, NIL, argList))));
2096 :
2097 216 : if (get_func_rettype(procOid) != CSTRINGOID)
2098 0 : ereport(ERROR,
2099 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2100 : errmsg("type output function %s must return type %s",
2101 : NameListToString(procname), "cstring")));
2102 :
2103 : /* Just a warning for now, per comments in findTypeInputFunction */
2104 216 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2105 0 : ereport(WARNING,
2106 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2107 : errmsg("type output function %s should not be volatile",
2108 : NameListToString(procname))));
2109 :
2110 216 : return procOid;
2111 : }
2112 :
2113 : static Oid
2114 46 : findTypeReceiveFunction(List *procname, Oid typeOid)
2115 : {
2116 : Oid argList[3];
2117 : Oid procOid;
2118 : Oid procOid2;
2119 :
2120 : /*
2121 : * Receive functions can take a single argument of type INTERNAL, or three
2122 : * arguments (internal, typioparam OID, typmod). Whine about ambiguity if
2123 : * both forms exist.
2124 : */
2125 46 : argList[0] = INTERNALOID;
2126 46 : argList[1] = OIDOID;
2127 46 : argList[2] = INT4OID;
2128 :
2129 46 : procOid = LookupFuncName(procname, 1, argList, true);
2130 46 : procOid2 = LookupFuncName(procname, 3, argList, true);
2131 46 : if (OidIsValid(procOid))
2132 : {
2133 36 : if (OidIsValid(procOid2))
2134 0 : ereport(ERROR,
2135 : (errcode(ERRCODE_AMBIGUOUS_FUNCTION),
2136 : errmsg("type receive function %s has multiple matches",
2137 : NameListToString(procname))));
2138 : }
2139 : else
2140 : {
2141 10 : procOid = procOid2;
2142 : /* If not found, reference the 1-argument signature in error msg */
2143 10 : 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 :
2150 : /* Receive functions must return the target type. */
2151 46 : if (get_func_rettype(procOid) != typeOid)
2152 0 : ereport(ERROR,
2153 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2154 : errmsg("type receive function %s must return type %s",
2155 : NameListToString(procname), format_type_be(typeOid))));
2156 :
2157 : /* Just a warning for now, per comments in findTypeInputFunction */
2158 46 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2159 0 : ereport(WARNING,
2160 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2161 : errmsg("type receive function %s should not be volatile",
2162 : NameListToString(procname))));
2163 :
2164 46 : return procOid;
2165 : }
2166 :
2167 : static Oid
2168 46 : findTypeSendFunction(List *procname, Oid typeOid)
2169 : {
2170 : Oid argList[1];
2171 : Oid procOid;
2172 :
2173 : /*
2174 : * Send functions always take a single argument of the type and return
2175 : * bytea.
2176 : */
2177 46 : argList[0] = typeOid;
2178 :
2179 46 : procOid = LookupFuncName(procname, 1, argList, true);
2180 46 : if (!OidIsValid(procOid))
2181 0 : ereport(ERROR,
2182 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2183 : errmsg("function %s does not exist",
2184 : func_signature_string(procname, 1, NIL, argList))));
2185 :
2186 46 : if (get_func_rettype(procOid) != BYTEAOID)
2187 0 : ereport(ERROR,
2188 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2189 : errmsg("type send function %s must return type %s",
2190 : NameListToString(procname), "bytea")));
2191 :
2192 : /* Just a warning for now, per comments in findTypeInputFunction */
2193 46 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2194 0 : ereport(WARNING,
2195 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2196 : errmsg("type send function %s should not be volatile",
2197 : NameListToString(procname))));
2198 :
2199 46 : return procOid;
2200 : }
2201 :
2202 : static Oid
2203 14 : findTypeTypmodinFunction(List *procname)
2204 : {
2205 : Oid argList[1];
2206 : Oid procOid;
2207 :
2208 : /*
2209 : * typmodin functions always take one cstring[] argument and return int4.
2210 : */
2211 14 : argList[0] = CSTRINGARRAYOID;
2212 :
2213 14 : procOid = LookupFuncName(procname, 1, argList, true);
2214 14 : if (!OidIsValid(procOid))
2215 0 : ereport(ERROR,
2216 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2217 : errmsg("function %s does not exist",
2218 : func_signature_string(procname, 1, NIL, argList))));
2219 :
2220 14 : if (get_func_rettype(procOid) != INT4OID)
2221 0 : ereport(ERROR,
2222 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2223 : errmsg("typmod_in function %s must return type %s",
2224 : NameListToString(procname), "integer")));
2225 :
2226 : /* Just a warning for now, per comments in findTypeInputFunction */
2227 14 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2228 0 : ereport(WARNING,
2229 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2230 : errmsg("type modifier input function %s should not be volatile",
2231 : NameListToString(procname))));
2232 :
2233 14 : return procOid;
2234 : }
2235 :
2236 : static Oid
2237 14 : findTypeTypmodoutFunction(List *procname)
2238 : {
2239 : Oid argList[1];
2240 : Oid procOid;
2241 :
2242 : /*
2243 : * typmodout functions always take one int4 argument and return cstring.
2244 : */
2245 14 : argList[0] = INT4OID;
2246 :
2247 14 : procOid = LookupFuncName(procname, 1, argList, true);
2248 14 : if (!OidIsValid(procOid))
2249 0 : ereport(ERROR,
2250 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2251 : errmsg("function %s does not exist",
2252 : func_signature_string(procname, 1, NIL, argList))));
2253 :
2254 14 : if (get_func_rettype(procOid) != CSTRINGOID)
2255 0 : ereport(ERROR,
2256 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2257 : errmsg("typmod_out function %s must return type %s",
2258 : NameListToString(procname), "cstring")));
2259 :
2260 : /* Just a warning for now, per comments in findTypeInputFunction */
2261 14 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2262 0 : ereport(WARNING,
2263 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2264 : errmsg("type modifier output function %s should not be volatile",
2265 : NameListToString(procname))));
2266 :
2267 14 : return procOid;
2268 : }
2269 :
2270 : static Oid
2271 6 : findTypeAnalyzeFunction(List *procname, Oid typeOid)
2272 : {
2273 : Oid argList[1];
2274 : Oid procOid;
2275 :
2276 : /*
2277 : * Analyze functions always take one INTERNAL argument and return bool.
2278 : */
2279 6 : argList[0] = INTERNALOID;
2280 :
2281 6 : procOid = LookupFuncName(procname, 1, argList, true);
2282 6 : if (!OidIsValid(procOid))
2283 0 : ereport(ERROR,
2284 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2285 : errmsg("function %s does not exist",
2286 : func_signature_string(procname, 1, NIL, argList))));
2287 :
2288 6 : if (get_func_rettype(procOid) != BOOLOID)
2289 0 : ereport(ERROR,
2290 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2291 : errmsg("type analyze function %s must return type %s",
2292 : NameListToString(procname), "boolean")));
2293 :
2294 6 : return procOid;
2295 : }
2296 :
2297 : static Oid
2298 22 : findTypeSubscriptingFunction(List *procname, Oid typeOid)
2299 : {
2300 : Oid argList[1];
2301 : Oid procOid;
2302 :
2303 : /*
2304 : * Subscripting support functions always take one INTERNAL argument and
2305 : * return INTERNAL. (The argument is not used, but we must have it to
2306 : * maintain type safety.)
2307 : */
2308 22 : argList[0] = INTERNALOID;
2309 :
2310 22 : procOid = LookupFuncName(procname, 1, argList, true);
2311 22 : if (!OidIsValid(procOid))
2312 0 : ereport(ERROR,
2313 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2314 : errmsg("function %s does not exist",
2315 : func_signature_string(procname, 1, NIL, argList))));
2316 :
2317 22 : if (get_func_rettype(procOid) != INTERNALOID)
2318 0 : ereport(ERROR,
2319 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2320 : errmsg("type subscripting function %s must return type %s",
2321 : NameListToString(procname), "internal")));
2322 :
2323 : /*
2324 : * We disallow array_subscript_handler() from being selected explicitly,
2325 : * since that must only be applied to autogenerated array types.
2326 : */
2327 22 : if (procOid == F_ARRAY_SUBSCRIPT_HANDLER)
2328 0 : ereport(ERROR,
2329 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2330 : errmsg("user-defined types cannot use subscripting function %s",
2331 : NameListToString(procname))));
2332 :
2333 22 : return procOid;
2334 : }
2335 :
2336 : /*
2337 : * Find suitable support functions and opclasses for a range type.
2338 : */
2339 :
2340 : /*
2341 : * Find named btree opclass for subtype, or default btree opclass if
2342 : * opcname is NIL.
2343 : */
2344 : static Oid
2345 184 : findRangeSubOpclass(List *opcname, Oid subtype)
2346 : {
2347 : Oid opcid;
2348 : Oid opInputType;
2349 :
2350 184 : if (opcname != NIL)
2351 : {
2352 8 : opcid = get_opclass_oid(BTREE_AM_OID, opcname, false);
2353 :
2354 : /*
2355 : * Verify that the operator class accepts this datatype. Note we will
2356 : * accept binary compatibility.
2357 : */
2358 8 : opInputType = get_opclass_input_type(opcid);
2359 8 : if (!IsBinaryCoercible(subtype, opInputType))
2360 0 : ereport(ERROR,
2361 : (errcode(ERRCODE_DATATYPE_MISMATCH),
2362 : errmsg("operator class \"%s\" does not accept data type %s",
2363 : NameListToString(opcname),
2364 : format_type_be(subtype))));
2365 : }
2366 : else
2367 : {
2368 176 : opcid = GetDefaultOpClass(subtype, BTREE_AM_OID);
2369 176 : if (!OidIsValid(opcid))
2370 : {
2371 : /* We spell the error message identically to ResolveOpClass */
2372 0 : ereport(ERROR,
2373 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2374 : errmsg("data type %s has no default operator class for access method \"%s\"",
2375 : format_type_be(subtype), "btree"),
2376 : errhint("You must specify an operator class for the range type or define a default operator class for the subtype.")));
2377 : }
2378 : }
2379 :
2380 184 : return opcid;
2381 : }
2382 :
2383 : static Oid
2384 0 : findRangeCanonicalFunction(List *procname, Oid typeOid)
2385 : {
2386 : Oid argList[1];
2387 : Oid procOid;
2388 : AclResult aclresult;
2389 :
2390 : /*
2391 : * Range canonical functions must take and return the range type, and must
2392 : * be immutable.
2393 : */
2394 0 : argList[0] = typeOid;
2395 :
2396 0 : procOid = LookupFuncName(procname, 1, argList, true);
2397 :
2398 0 : if (!OidIsValid(procOid))
2399 0 : ereport(ERROR,
2400 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2401 : errmsg("function %s does not exist",
2402 : func_signature_string(procname, 1, NIL, argList))));
2403 :
2404 0 : if (get_func_rettype(procOid) != typeOid)
2405 0 : ereport(ERROR,
2406 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2407 : errmsg("range canonical function %s must return range type",
2408 : func_signature_string(procname, 1, NIL, argList))));
2409 :
2410 0 : if (func_volatile(procOid) != PROVOLATILE_IMMUTABLE)
2411 0 : ereport(ERROR,
2412 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2413 : errmsg("range canonical function %s must be immutable",
2414 : func_signature_string(procname, 1, NIL, argList))));
2415 :
2416 : /* Also, range type's creator must have permission to call function */
2417 0 : aclresult = object_aclcheck(ProcedureRelationId, procOid, GetUserId(), ACL_EXECUTE);
2418 0 : if (aclresult != ACLCHECK_OK)
2419 0 : aclcheck_error(aclresult, OBJECT_FUNCTION, get_func_name(procOid));
2420 :
2421 0 : return procOid;
2422 : }
2423 :
2424 : static Oid
2425 14 : findRangeSubtypeDiffFunction(List *procname, Oid subtype)
2426 : {
2427 : Oid argList[2];
2428 : Oid procOid;
2429 : AclResult aclresult;
2430 :
2431 : /*
2432 : * Range subtype diff functions must take two arguments of the subtype,
2433 : * must return float8, and must be immutable.
2434 : */
2435 14 : argList[0] = subtype;
2436 14 : argList[1] = subtype;
2437 :
2438 14 : procOid = LookupFuncName(procname, 2, argList, true);
2439 :
2440 14 : if (!OidIsValid(procOid))
2441 6 : ereport(ERROR,
2442 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2443 : errmsg("function %s does not exist",
2444 : func_signature_string(procname, 2, NIL, argList))));
2445 :
2446 8 : if (get_func_rettype(procOid) != FLOAT8OID)
2447 0 : ereport(ERROR,
2448 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2449 : errmsg("range subtype diff function %s must return type %s",
2450 : func_signature_string(procname, 2, NIL, argList),
2451 : "double precision")));
2452 :
2453 8 : if (func_volatile(procOid) != PROVOLATILE_IMMUTABLE)
2454 0 : ereport(ERROR,
2455 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2456 : errmsg("range subtype diff function %s must be immutable",
2457 : func_signature_string(procname, 2, NIL, argList))));
2458 :
2459 : /* Also, range type's creator must have permission to call function */
2460 8 : aclresult = object_aclcheck(ProcedureRelationId, procOid, GetUserId(), ACL_EXECUTE);
2461 8 : if (aclresult != ACLCHECK_OK)
2462 0 : aclcheck_error(aclresult, OBJECT_FUNCTION, get_func_name(procOid));
2463 :
2464 8 : return procOid;
2465 : }
2466 :
2467 : /*
2468 : * AssignTypeArrayOid
2469 : *
2470 : * Pre-assign the type's array OID for use in pg_type.typarray
2471 : */
2472 : Oid
2473 74286 : AssignTypeArrayOid(void)
2474 : {
2475 : Oid type_array_oid;
2476 :
2477 : /* Use binary-upgrade override for pg_type.typarray? */
2478 74286 : if (IsBinaryUpgrade)
2479 : {
2480 1734 : if (!OidIsValid(binary_upgrade_next_array_pg_type_oid))
2481 0 : ereport(ERROR,
2482 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2483 : errmsg("pg_type array OID value not set when in binary upgrade mode")));
2484 :
2485 1734 : type_array_oid = binary_upgrade_next_array_pg_type_oid;
2486 1734 : binary_upgrade_next_array_pg_type_oid = InvalidOid;
2487 : }
2488 : else
2489 : {
2490 72552 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2491 :
2492 72552 : type_array_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2493 : Anum_pg_type_oid);
2494 72552 : table_close(pg_type, AccessShareLock);
2495 : }
2496 :
2497 74286 : return type_array_oid;
2498 : }
2499 :
2500 : /*
2501 : * AssignTypeMultirangeOid
2502 : *
2503 : * Pre-assign the range type's multirange OID for use in pg_type.oid
2504 : */
2505 : Oid
2506 178 : AssignTypeMultirangeOid(void)
2507 : {
2508 : Oid type_multirange_oid;
2509 :
2510 : /* Use binary-upgrade override for pg_type.oid? */
2511 178 : if (IsBinaryUpgrade)
2512 : {
2513 12 : if (!OidIsValid(binary_upgrade_next_mrng_pg_type_oid))
2514 0 : ereport(ERROR,
2515 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2516 : errmsg("pg_type multirange OID value not set when in binary upgrade mode")));
2517 :
2518 12 : type_multirange_oid = binary_upgrade_next_mrng_pg_type_oid;
2519 12 : binary_upgrade_next_mrng_pg_type_oid = InvalidOid;
2520 : }
2521 : else
2522 : {
2523 166 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2524 :
2525 166 : type_multirange_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2526 : Anum_pg_type_oid);
2527 166 : table_close(pg_type, AccessShareLock);
2528 : }
2529 :
2530 178 : return type_multirange_oid;
2531 : }
2532 :
2533 : /*
2534 : * AssignTypeMultirangeArrayOid
2535 : *
2536 : * Pre-assign the range type's multirange array OID for use in pg_type.typarray
2537 : */
2538 : Oid
2539 178 : AssignTypeMultirangeArrayOid(void)
2540 : {
2541 : Oid type_multirange_array_oid;
2542 :
2543 : /* Use binary-upgrade override for pg_type.oid? */
2544 178 : if (IsBinaryUpgrade)
2545 : {
2546 12 : if (!OidIsValid(binary_upgrade_next_mrng_array_pg_type_oid))
2547 0 : ereport(ERROR,
2548 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2549 : errmsg("pg_type multirange array OID value not set when in binary upgrade mode")));
2550 :
2551 12 : type_multirange_array_oid = binary_upgrade_next_mrng_array_pg_type_oid;
2552 12 : binary_upgrade_next_mrng_array_pg_type_oid = InvalidOid;
2553 : }
2554 : else
2555 : {
2556 166 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2557 :
2558 166 : type_multirange_array_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2559 : Anum_pg_type_oid);
2560 166 : table_close(pg_type, AccessShareLock);
2561 : }
2562 :
2563 178 : return type_multirange_array_oid;
2564 : }
2565 :
2566 :
2567 : /*-------------------------------------------------------------------
2568 : * DefineCompositeType
2569 : *
2570 : * Create a Composite Type relation.
2571 : * `DefineRelation' does all the work, we just provide the correct
2572 : * arguments!
2573 : *
2574 : * If the relation already exists, then 'DefineRelation' will abort
2575 : * the xact...
2576 : *
2577 : * Return type is the new type's object address.
2578 : *-------------------------------------------------------------------
2579 : */
2580 : ObjectAddress
2581 4502 : DefineCompositeType(RangeVar *typevar, List *coldeflist)
2582 : {
2583 4502 : CreateStmt *createStmt = makeNode(CreateStmt);
2584 : Oid old_type_oid;
2585 : Oid typeNamespace;
2586 : ObjectAddress address;
2587 :
2588 : /*
2589 : * now set the parameters for keys/inheritance etc. All of these are
2590 : * uninteresting for composite types...
2591 : */
2592 4502 : createStmt->relation = typevar;
2593 4502 : createStmt->tableElts = coldeflist;
2594 4502 : createStmt->inhRelations = NIL;
2595 4502 : createStmt->constraints = NIL;
2596 4502 : createStmt->options = NIL;
2597 4502 : createStmt->oncommit = ONCOMMIT_NOOP;
2598 4502 : createStmt->tablespacename = NULL;
2599 4502 : createStmt->if_not_exists = false;
2600 :
2601 : /*
2602 : * Check for collision with an existing type name. If there is one and
2603 : * it's an autogenerated array, we can rename it out of the way. This
2604 : * check is here mainly to get a better error message about a "type"
2605 : * instead of below about a "relation".
2606 : */
2607 4502 : typeNamespace = RangeVarGetAndCheckCreationNamespace(createStmt->relation,
2608 : NoLock, NULL);
2609 4502 : RangeVarAdjustRelationPersistence(createStmt->relation, typeNamespace);
2610 : old_type_oid =
2611 4502 : GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
2612 : CStringGetDatum(createStmt->relation->relname),
2613 : ObjectIdGetDatum(typeNamespace));
2614 4502 : if (OidIsValid(old_type_oid))
2615 : {
2616 0 : if (!moveArrayTypeName(old_type_oid, createStmt->relation->relname, typeNamespace))
2617 0 : ereport(ERROR,
2618 : (errcode(ERRCODE_DUPLICATE_OBJECT),
2619 : errmsg("type \"%s\" already exists", createStmt->relation->relname)));
2620 : }
2621 :
2622 : /*
2623 : * Finally create the relation. This also creates the type.
2624 : */
2625 4502 : DefineRelation(createStmt, RELKIND_COMPOSITE_TYPE, InvalidOid, &address,
2626 : NULL);
2627 :
2628 4490 : return address;
2629 : }
2630 :
2631 : /*
2632 : * AlterDomainDefault
2633 : *
2634 : * Routine implementing ALTER DOMAIN SET/DROP DEFAULT statements.
2635 : *
2636 : * Returns ObjectAddress of the modified domain.
2637 : */
2638 : ObjectAddress
2639 14 : AlterDomainDefault(List *names, Node *defaultRaw)
2640 : {
2641 : TypeName *typename;
2642 : Oid domainoid;
2643 : HeapTuple tup;
2644 : ParseState *pstate;
2645 : Relation rel;
2646 : char *defaultValue;
2647 14 : Node *defaultExpr = NULL; /* NULL if no default specified */
2648 14 : Datum new_record[Natts_pg_type] = {0};
2649 14 : bool new_record_nulls[Natts_pg_type] = {0};
2650 14 : bool new_record_repl[Natts_pg_type] = {0};
2651 : HeapTuple newtuple;
2652 : Form_pg_type typTup;
2653 : ObjectAddress address;
2654 :
2655 : /* Make a TypeName so we can use standard type lookup machinery */
2656 14 : typename = makeTypeNameFromNameList(names);
2657 14 : domainoid = typenameTypeId(NULL, typename);
2658 :
2659 : /* Look up the domain in the type table */
2660 14 : rel = table_open(TypeRelationId, RowExclusiveLock);
2661 :
2662 14 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2663 14 : if (!HeapTupleIsValid(tup))
2664 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2665 14 : typTup = (Form_pg_type) GETSTRUCT(tup);
2666 :
2667 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2668 14 : checkDomainOwner(tup);
2669 :
2670 : /* Setup new tuple */
2671 :
2672 : /* Store the new default into the tuple */
2673 14 : if (defaultRaw)
2674 : {
2675 : /* Create a dummy ParseState for transformExpr */
2676 8 : pstate = make_parsestate(NULL);
2677 :
2678 : /*
2679 : * Cook the colDef->raw_expr into an expression. Note: Name is
2680 : * strictly for error message
2681 : */
2682 8 : defaultExpr = cookDefault(pstate, defaultRaw,
2683 : typTup->typbasetype,
2684 : typTup->typtypmod,
2685 8 : NameStr(typTup->typname),
2686 : 0);
2687 :
2688 : /*
2689 : * If the expression is just a NULL constant, we treat the command
2690 : * like ALTER ... DROP DEFAULT. (But see note for same test in
2691 : * DefineDomain.)
2692 : */
2693 8 : if (defaultExpr == NULL ||
2694 8 : (IsA(defaultExpr, Const) && ((Const *) defaultExpr)->constisnull))
2695 : {
2696 : /* Default is NULL, drop it */
2697 0 : defaultExpr = NULL;
2698 0 : new_record_nulls[Anum_pg_type_typdefaultbin - 1] = true;
2699 0 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2700 0 : new_record_nulls[Anum_pg_type_typdefault - 1] = true;
2701 0 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2702 : }
2703 : else
2704 : {
2705 : /*
2706 : * Expression must be stored as a nodeToString result, but we also
2707 : * require a valid textual representation (mainly to make life
2708 : * easier for pg_dump).
2709 : */
2710 8 : defaultValue = deparse_expression(defaultExpr,
2711 : NIL, false, false);
2712 :
2713 : /*
2714 : * Form an updated tuple with the new default and write it back.
2715 : */
2716 8 : new_record[Anum_pg_type_typdefaultbin - 1] = CStringGetTextDatum(nodeToString(defaultExpr));
2717 :
2718 8 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2719 8 : new_record[Anum_pg_type_typdefault - 1] = CStringGetTextDatum(defaultValue);
2720 8 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2721 : }
2722 : }
2723 : else
2724 : {
2725 : /* ALTER ... DROP DEFAULT */
2726 6 : new_record_nulls[Anum_pg_type_typdefaultbin - 1] = true;
2727 6 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2728 6 : new_record_nulls[Anum_pg_type_typdefault - 1] = true;
2729 6 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2730 : }
2731 :
2732 14 : newtuple = heap_modify_tuple(tup, RelationGetDescr(rel),
2733 : new_record, new_record_nulls,
2734 : new_record_repl);
2735 :
2736 14 : CatalogTupleUpdate(rel, &tup->t_self, newtuple);
2737 :
2738 : /* Rebuild dependencies */
2739 14 : GenerateTypeDependencies(newtuple,
2740 : rel,
2741 : defaultExpr,
2742 : NULL, /* don't have typacl handy */
2743 : 0, /* relation kind is n/a */
2744 : false, /* a domain isn't an implicit array */
2745 : false, /* nor is it any kind of dependent type */
2746 : false, /* don't touch extension membership */
2747 : true); /* We do need to rebuild dependencies */
2748 :
2749 14 : InvokeObjectPostAlterHook(TypeRelationId, domainoid, 0);
2750 :
2751 14 : ObjectAddressSet(address, TypeRelationId, domainoid);
2752 :
2753 : /* Clean up */
2754 14 : table_close(rel, RowExclusiveLock);
2755 14 : heap_freetuple(newtuple);
2756 :
2757 14 : return address;
2758 : }
2759 :
2760 : /*
2761 : * AlterDomainNotNull
2762 : *
2763 : * Routine implementing ALTER DOMAIN SET/DROP NOT NULL statements.
2764 : *
2765 : * Returns ObjectAddress of the modified domain.
2766 : */
2767 : ObjectAddress
2768 36 : AlterDomainNotNull(List *names, bool notNull)
2769 : {
2770 : TypeName *typename;
2771 : Oid domainoid;
2772 : Relation typrel;
2773 : HeapTuple tup;
2774 : Form_pg_type typTup;
2775 36 : ObjectAddress address = InvalidObjectAddress;
2776 :
2777 : /* Make a TypeName so we can use standard type lookup machinery */
2778 36 : typename = makeTypeNameFromNameList(names);
2779 36 : domainoid = typenameTypeId(NULL, typename);
2780 :
2781 : /* Look up the domain in the type table */
2782 36 : typrel = table_open(TypeRelationId, RowExclusiveLock);
2783 :
2784 36 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2785 36 : if (!HeapTupleIsValid(tup))
2786 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2787 36 : typTup = (Form_pg_type) GETSTRUCT(tup);
2788 :
2789 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2790 36 : checkDomainOwner(tup);
2791 :
2792 : /* Is the domain already set to the desired constraint? */
2793 36 : if (typTup->typnotnull == notNull)
2794 : {
2795 0 : table_close(typrel, RowExclusiveLock);
2796 0 : return address;
2797 : }
2798 :
2799 36 : if (notNull)
2800 : {
2801 : Constraint *constr;
2802 :
2803 24 : constr = makeNode(Constraint);
2804 24 : constr->contype = CONSTR_NOTNULL;
2805 24 : constr->initially_valid = true;
2806 24 : constr->location = -1;
2807 :
2808 24 : domainAddNotNullConstraint(domainoid, typTup->typnamespace,
2809 : typTup->typbasetype, typTup->typtypmod,
2810 24 : constr, NameStr(typTup->typname), NULL);
2811 :
2812 24 : validateDomainNotNullConstraint(domainoid);
2813 : }
2814 : else
2815 : {
2816 : HeapTuple conTup;
2817 : ObjectAddress conobj;
2818 :
2819 12 : conTup = findDomainNotNullConstraint(domainoid);
2820 12 : if (conTup == NULL)
2821 0 : elog(ERROR, "could not find not-null constraint on domain \"%s\"", NameStr(typTup->typname));
2822 :
2823 12 : ObjectAddressSet(conobj, ConstraintRelationId, ((Form_pg_constraint) GETSTRUCT(conTup))->oid);
2824 12 : performDeletion(&conobj, DROP_RESTRICT, 0);
2825 : }
2826 :
2827 : /*
2828 : * Okay to update pg_type row. We can scribble on typTup because it's a
2829 : * copy.
2830 : */
2831 24 : typTup->typnotnull = notNull;
2832 :
2833 24 : CatalogTupleUpdate(typrel, &tup->t_self, tup);
2834 :
2835 24 : InvokeObjectPostAlterHook(TypeRelationId, domainoid, 0);
2836 :
2837 24 : ObjectAddressSet(address, TypeRelationId, domainoid);
2838 :
2839 : /* Clean up */
2840 24 : heap_freetuple(tup);
2841 24 : table_close(typrel, RowExclusiveLock);
2842 :
2843 24 : return address;
2844 : }
2845 :
2846 : /*
2847 : * AlterDomainDropConstraint
2848 : *
2849 : * Implements the ALTER DOMAIN DROP CONSTRAINT statement
2850 : *
2851 : * Returns ObjectAddress of the modified domain.
2852 : */
2853 : ObjectAddress
2854 60 : AlterDomainDropConstraint(List *names, const char *constrName,
2855 : DropBehavior behavior, bool missing_ok)
2856 : {
2857 : TypeName *typename;
2858 : Oid domainoid;
2859 : HeapTuple tup;
2860 : Relation rel;
2861 : Relation conrel;
2862 : SysScanDesc conscan;
2863 : ScanKeyData skey[3];
2864 : HeapTuple contup;
2865 60 : bool found = false;
2866 : ObjectAddress address;
2867 :
2868 : /* Make a TypeName so we can use standard type lookup machinery */
2869 60 : typename = makeTypeNameFromNameList(names);
2870 60 : domainoid = typenameTypeId(NULL, typename);
2871 :
2872 : /* Look up the domain in the type table */
2873 60 : rel = table_open(TypeRelationId, RowExclusiveLock);
2874 :
2875 60 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2876 60 : if (!HeapTupleIsValid(tup))
2877 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2878 :
2879 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2880 60 : checkDomainOwner(tup);
2881 :
2882 : /* Grab an appropriate lock on the pg_constraint relation */
2883 60 : conrel = table_open(ConstraintRelationId, RowExclusiveLock);
2884 :
2885 : /* Find and remove the target constraint */
2886 60 : ScanKeyInit(&skey[0],
2887 : Anum_pg_constraint_conrelid,
2888 : BTEqualStrategyNumber, F_OIDEQ,
2889 : ObjectIdGetDatum(InvalidOid));
2890 60 : ScanKeyInit(&skey[1],
2891 : Anum_pg_constraint_contypid,
2892 : BTEqualStrategyNumber, F_OIDEQ,
2893 : ObjectIdGetDatum(domainoid));
2894 60 : ScanKeyInit(&skey[2],
2895 : Anum_pg_constraint_conname,
2896 : BTEqualStrategyNumber, F_NAMEEQ,
2897 : CStringGetDatum(constrName));
2898 :
2899 60 : conscan = systable_beginscan(conrel, ConstraintRelidTypidNameIndexId, true,
2900 : NULL, 3, skey);
2901 :
2902 : /* There can be at most one matching row */
2903 60 : if ((contup = systable_getnext(conscan)) != NULL)
2904 : {
2905 48 : Form_pg_constraint construct = (Form_pg_constraint) GETSTRUCT(contup);
2906 : ObjectAddress conobj;
2907 :
2908 48 : if (construct->contype == CONSTRAINT_NOTNULL)
2909 : {
2910 12 : ((Form_pg_type) GETSTRUCT(tup))->typnotnull = false;
2911 12 : CatalogTupleUpdate(rel, &tup->t_self, tup);
2912 : }
2913 :
2914 48 : conobj.classId = ConstraintRelationId;
2915 48 : conobj.objectId = construct->oid;
2916 48 : conobj.objectSubId = 0;
2917 :
2918 48 : performDeletion(&conobj, behavior, 0);
2919 48 : found = true;
2920 : }
2921 :
2922 : /* Clean up after the scan */
2923 60 : systable_endscan(conscan);
2924 60 : table_close(conrel, RowExclusiveLock);
2925 :
2926 60 : if (!found)
2927 : {
2928 12 : if (!missing_ok)
2929 6 : ereport(ERROR,
2930 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2931 : errmsg("constraint \"%s\" of domain \"%s\" does not exist",
2932 : constrName, TypeNameToString(typename))));
2933 : else
2934 6 : ereport(NOTICE,
2935 : (errmsg("constraint \"%s\" of domain \"%s\" does not exist, skipping",
2936 : constrName, TypeNameToString(typename))));
2937 : }
2938 :
2939 : /*
2940 : * We must send out an sinval message for the domain, to ensure that any
2941 : * dependent plans get rebuilt. Since this command doesn't change the
2942 : * domain's pg_type row, that won't happen automatically; do it manually.
2943 : */
2944 54 : CacheInvalidateHeapTuple(rel, tup, NULL);
2945 :
2946 54 : ObjectAddressSet(address, TypeRelationId, domainoid);
2947 :
2948 : /* Clean up */
2949 54 : table_close(rel, RowExclusiveLock);
2950 :
2951 54 : return address;
2952 : }
2953 :
2954 : /*
2955 : * AlterDomainAddConstraint
2956 : *
2957 : * Implements the ALTER DOMAIN .. ADD CONSTRAINT statement.
2958 : */
2959 : ObjectAddress
2960 182 : AlterDomainAddConstraint(List *names, Node *newConstraint,
2961 : ObjectAddress *constrAddr)
2962 : {
2963 : TypeName *typename;
2964 : Oid domainoid;
2965 : Relation typrel;
2966 : HeapTuple tup;
2967 : Form_pg_type typTup;
2968 : Constraint *constr;
2969 : char *ccbin;
2970 182 : ObjectAddress address = InvalidObjectAddress;
2971 :
2972 : /* Make a TypeName so we can use standard type lookup machinery */
2973 182 : typename = makeTypeNameFromNameList(names);
2974 182 : domainoid = typenameTypeId(NULL, typename);
2975 :
2976 : /* Look up the domain in the type table */
2977 182 : typrel = table_open(TypeRelationId, RowExclusiveLock);
2978 :
2979 182 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2980 182 : if (!HeapTupleIsValid(tup))
2981 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2982 182 : typTup = (Form_pg_type) GETSTRUCT(tup);
2983 :
2984 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2985 182 : checkDomainOwner(tup);
2986 :
2987 182 : if (!IsA(newConstraint, Constraint))
2988 0 : elog(ERROR, "unrecognized node type: %d",
2989 : (int) nodeTag(newConstraint));
2990 :
2991 182 : constr = (Constraint *) newConstraint;
2992 :
2993 : /* enforced by parser */
2994 : Assert(constr->contype == CONSTR_CHECK || constr->contype == CONSTR_NOTNULL);
2995 :
2996 182 : if (constr->contype == CONSTR_CHECK)
2997 : {
2998 : /*
2999 : * First, process the constraint expression and add an entry to
3000 : * pg_constraint.
3001 : */
3002 :
3003 152 : ccbin = domainAddCheckConstraint(domainoid, typTup->typnamespace,
3004 : typTup->typbasetype, typTup->typtypmod,
3005 152 : constr, NameStr(typTup->typname), constrAddr);
3006 :
3007 :
3008 : /*
3009 : * If requested to validate the constraint, test all values stored in
3010 : * the attributes based on the domain the constraint is being added
3011 : * to.
3012 : */
3013 146 : if (!constr->skip_validation)
3014 132 : validateDomainCheckConstraint(domainoid, ccbin, ShareLock);
3015 :
3016 : /*
3017 : * We must send out an sinval message for the domain, to ensure that
3018 : * any dependent plans get rebuilt. Since this command doesn't change
3019 : * the domain's pg_type row, that won't happen automatically; do it
3020 : * manually.
3021 : */
3022 86 : CacheInvalidateHeapTuple(typrel, tup, NULL);
3023 : }
3024 30 : else if (constr->contype == CONSTR_NOTNULL)
3025 : {
3026 : /* Is the domain already set NOT NULL? */
3027 30 : if (typTup->typnotnull)
3028 : {
3029 6 : table_close(typrel, RowExclusiveLock);
3030 6 : return address;
3031 : }
3032 24 : domainAddNotNullConstraint(domainoid, typTup->typnamespace,
3033 : typTup->typbasetype, typTup->typtypmod,
3034 24 : constr, NameStr(typTup->typname), constrAddr);
3035 :
3036 24 : if (!constr->skip_validation)
3037 24 : validateDomainNotNullConstraint(domainoid);
3038 :
3039 12 : typTup->typnotnull = true;
3040 12 : CatalogTupleUpdate(typrel, &tup->t_self, tup);
3041 : }
3042 :
3043 98 : ObjectAddressSet(address, TypeRelationId, domainoid);
3044 :
3045 : /* Clean up */
3046 98 : table_close(typrel, RowExclusiveLock);
3047 :
3048 98 : return address;
3049 : }
3050 :
3051 : /*
3052 : * AlterDomainValidateConstraint
3053 : *
3054 : * Implements the ALTER DOMAIN .. VALIDATE CONSTRAINT statement.
3055 : */
3056 : ObjectAddress
3057 12 : AlterDomainValidateConstraint(List *names, const char *constrName)
3058 : {
3059 : TypeName *typename;
3060 : Oid domainoid;
3061 : Relation typrel;
3062 : Relation conrel;
3063 : HeapTuple tup;
3064 : Form_pg_constraint con;
3065 : Form_pg_constraint copy_con;
3066 : char *conbin;
3067 : SysScanDesc scan;
3068 : Datum val;
3069 : HeapTuple tuple;
3070 : HeapTuple copyTuple;
3071 : ScanKeyData skey[3];
3072 : ObjectAddress address;
3073 :
3074 : /* Make a TypeName so we can use standard type lookup machinery */
3075 12 : typename = makeTypeNameFromNameList(names);
3076 12 : domainoid = typenameTypeId(NULL, typename);
3077 :
3078 : /* Look up the domain in the type table */
3079 12 : typrel = table_open(TypeRelationId, AccessShareLock);
3080 :
3081 12 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(domainoid));
3082 12 : if (!HeapTupleIsValid(tup))
3083 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
3084 :
3085 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
3086 12 : checkDomainOwner(tup);
3087 :
3088 : /*
3089 : * Find and check the target constraint
3090 : */
3091 12 : conrel = table_open(ConstraintRelationId, RowExclusiveLock);
3092 :
3093 12 : ScanKeyInit(&skey[0],
3094 : Anum_pg_constraint_conrelid,
3095 : BTEqualStrategyNumber, F_OIDEQ,
3096 : ObjectIdGetDatum(InvalidOid));
3097 12 : ScanKeyInit(&skey[1],
3098 : Anum_pg_constraint_contypid,
3099 : BTEqualStrategyNumber, F_OIDEQ,
3100 : ObjectIdGetDatum(domainoid));
3101 12 : ScanKeyInit(&skey[2],
3102 : Anum_pg_constraint_conname,
3103 : BTEqualStrategyNumber, F_NAMEEQ,
3104 : CStringGetDatum(constrName));
3105 :
3106 12 : scan = systable_beginscan(conrel, ConstraintRelidTypidNameIndexId, true,
3107 : NULL, 3, skey);
3108 :
3109 : /* There can be at most one matching row */
3110 12 : if (!HeapTupleIsValid(tuple = systable_getnext(scan)))
3111 0 : ereport(ERROR,
3112 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3113 : errmsg("constraint \"%s\" of domain \"%s\" does not exist",
3114 : constrName, TypeNameToString(typename))));
3115 :
3116 12 : con = (Form_pg_constraint) GETSTRUCT(tuple);
3117 12 : if (con->contype != CONSTRAINT_CHECK)
3118 0 : ereport(ERROR,
3119 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3120 : errmsg("constraint \"%s\" of domain \"%s\" is not a check constraint",
3121 : constrName, TypeNameToString(typename))));
3122 :
3123 12 : val = SysCacheGetAttrNotNull(CONSTROID, tuple, Anum_pg_constraint_conbin);
3124 12 : conbin = TextDatumGetCString(val);
3125 :
3126 : /*
3127 : * Locking related relations with ShareUpdateExclusiveLock is ok because
3128 : * not-yet-valid constraints are still enforced against concurrent inserts
3129 : * or updates.
3130 : */
3131 12 : validateDomainCheckConstraint(domainoid, conbin, ShareUpdateExclusiveLock);
3132 :
3133 : /*
3134 : * Now update the catalog, while we have the door open.
3135 : */
3136 6 : copyTuple = heap_copytuple(tuple);
3137 6 : copy_con = (Form_pg_constraint) GETSTRUCT(copyTuple);
3138 6 : copy_con->convalidated = true;
3139 6 : CatalogTupleUpdate(conrel, ©Tuple->t_self, copyTuple);
3140 :
3141 6 : InvokeObjectPostAlterHook(ConstraintRelationId, con->oid, 0);
3142 :
3143 6 : ObjectAddressSet(address, TypeRelationId, domainoid);
3144 :
3145 6 : heap_freetuple(copyTuple);
3146 :
3147 6 : systable_endscan(scan);
3148 :
3149 6 : table_close(typrel, AccessShareLock);
3150 6 : table_close(conrel, RowExclusiveLock);
3151 :
3152 6 : ReleaseSysCache(tup);
3153 :
3154 6 : return address;
3155 : }
3156 :
3157 : /*
3158 : * Verify that all columns currently using the domain are not null.
3159 : */
3160 : static void
3161 48 : validateDomainNotNullConstraint(Oid domainoid)
3162 : {
3163 : List *rels;
3164 : ListCell *rt;
3165 :
3166 : /* Fetch relation list with attributes based on this domain */
3167 : /* ShareLock is sufficient to prevent concurrent data changes */
3168 :
3169 48 : rels = get_rels_with_domain(domainoid, ShareLock);
3170 :
3171 66 : foreach(rt, rels)
3172 : {
3173 42 : RelToCheck *rtc = (RelToCheck *) lfirst(rt);
3174 42 : Relation testrel = rtc->rel;
3175 42 : TupleDesc tupdesc = RelationGetDescr(testrel);
3176 : TupleTableSlot *slot;
3177 : TableScanDesc scan;
3178 : Snapshot snapshot;
3179 :
3180 : /* Scan all tuples in this relation */
3181 42 : snapshot = RegisterSnapshot(GetLatestSnapshot());
3182 42 : scan = table_beginscan(testrel, snapshot, 0, NULL);
3183 42 : slot = table_slot_create(testrel, NULL);
3184 60 : while (table_scan_getnextslot(scan, ForwardScanDirection, slot))
3185 : {
3186 : int i;
3187 :
3188 : /* Test attributes that are of the domain */
3189 90 : for (i = 0; i < rtc->natts; i++)
3190 : {
3191 72 : int attnum = rtc->atts[i];
3192 72 : Form_pg_attribute attr = TupleDescAttr(tupdesc, attnum - 1);
3193 :
3194 72 : if (slot_attisnull(slot, attnum))
3195 : {
3196 : /*
3197 : * In principle the auxiliary information for this error
3198 : * should be errdatatype(), but errtablecol() seems
3199 : * considerably more useful in practice. Since this code
3200 : * only executes in an ALTER DOMAIN command, the client
3201 : * should already know which domain is in question.
3202 : */
3203 24 : ereport(ERROR,
3204 : (errcode(ERRCODE_NOT_NULL_VIOLATION),
3205 : errmsg("column \"%s\" of table \"%s\" contains null values",
3206 : NameStr(attr->attname),
3207 : RelationGetRelationName(testrel)),
3208 : errtablecol(testrel, attnum)));
3209 : }
3210 : }
3211 : }
3212 18 : ExecDropSingleTupleTableSlot(slot);
3213 18 : table_endscan(scan);
3214 18 : UnregisterSnapshot(snapshot);
3215 :
3216 : /* Close each rel after processing, but keep lock */
3217 18 : table_close(testrel, NoLock);
3218 : }
3219 24 : }
3220 :
3221 : /*
3222 : * Verify that all columns currently using the domain satisfy the given check
3223 : * constraint expression.
3224 : *
3225 : * It is used to validate existing constraints and to add newly created check
3226 : * constraints to a domain.
3227 : *
3228 : * The lockmode is used for relations using the domain. It should be
3229 : * ShareLock when adding a new constraint to domain. It can be
3230 : * ShareUpdateExclusiveLock when validating an existing constraint.
3231 : */
3232 : static void
3233 144 : validateDomainCheckConstraint(Oid domainoid, const char *ccbin, LOCKMODE lockmode)
3234 : {
3235 144 : Expr *expr = (Expr *) stringToNode(ccbin);
3236 : List *rels;
3237 : ListCell *rt;
3238 : EState *estate;
3239 : ExprContext *econtext;
3240 : ExprState *exprstate;
3241 :
3242 : /* Need an EState to run ExecEvalExpr */
3243 144 : estate = CreateExecutorState();
3244 144 : econtext = GetPerTupleExprContext(estate);
3245 :
3246 : /* build execution state for expr */
3247 144 : exprstate = ExecPrepareExpr(expr, estate);
3248 :
3249 : /* Fetch relation list with attributes based on this domain */
3250 144 : rels = get_rels_with_domain(domainoid, lockmode);
3251 :
3252 150 : foreach(rt, rels)
3253 : {
3254 72 : RelToCheck *rtc = (RelToCheck *) lfirst(rt);
3255 72 : Relation testrel = rtc->rel;
3256 72 : TupleDesc tupdesc = RelationGetDescr(testrel);
3257 : TupleTableSlot *slot;
3258 : TableScanDesc scan;
3259 : Snapshot snapshot;
3260 :
3261 : /* Scan all tuples in this relation */
3262 72 : snapshot = RegisterSnapshot(GetLatestSnapshot());
3263 72 : scan = table_beginscan(testrel, snapshot, 0, NULL);
3264 72 : slot = table_slot_create(testrel, NULL);
3265 168 : while (table_scan_getnextslot(scan, ForwardScanDirection, slot))
3266 : {
3267 : int i;
3268 :
3269 : /* Test attributes that are of the domain */
3270 228 : for (i = 0; i < rtc->natts; i++)
3271 : {
3272 132 : int attnum = rtc->atts[i];
3273 : Datum d;
3274 : bool isNull;
3275 : Datum conResult;
3276 :
3277 132 : d = slot_getattr(slot, attnum, &isNull);
3278 :
3279 132 : econtext->domainValue_datum = d;
3280 132 : econtext->domainValue_isNull = isNull;
3281 :
3282 132 : conResult = ExecEvalExprSwitchContext(exprstate,
3283 : econtext,
3284 : &isNull);
3285 :
3286 132 : if (!isNull && !DatumGetBool(conResult))
3287 : {
3288 36 : Form_pg_attribute attr = TupleDescAttr(tupdesc, attnum - 1);
3289 :
3290 : /*
3291 : * In principle the auxiliary information for this error
3292 : * should be errdomainconstraint(), but errtablecol()
3293 : * seems considerably more useful in practice. Since this
3294 : * code only executes in an ALTER DOMAIN command, the
3295 : * client should already know which domain is in question,
3296 : * and which constraint too.
3297 : */
3298 36 : ereport(ERROR,
3299 : (errcode(ERRCODE_CHECK_VIOLATION),
3300 : errmsg("column \"%s\" of table \"%s\" contains values that violate the new constraint",
3301 : NameStr(attr->attname),
3302 : RelationGetRelationName(testrel)),
3303 : errtablecol(testrel, attnum)));
3304 : }
3305 : }
3306 :
3307 96 : ResetExprContext(econtext);
3308 : }
3309 36 : ExecDropSingleTupleTableSlot(slot);
3310 36 : table_endscan(scan);
3311 36 : UnregisterSnapshot(snapshot);
3312 :
3313 : /* Hold relation lock till commit (XXX bad for concurrency) */
3314 36 : table_close(testrel, NoLock);
3315 : }
3316 :
3317 78 : FreeExecutorState(estate);
3318 78 : }
3319 :
3320 : /*
3321 : * get_rels_with_domain
3322 : *
3323 : * Fetch all relations / attributes which are using the domain
3324 : *
3325 : * The result is a list of RelToCheck structs, one for each distinct
3326 : * relation, each containing one or more attribute numbers that are of
3327 : * the domain type. We have opened each rel and acquired the specified lock
3328 : * type on it.
3329 : *
3330 : * We support nested domains by including attributes that are of derived
3331 : * domain types. Current callers do not need to distinguish between attributes
3332 : * that are of exactly the given domain and those that are of derived domains.
3333 : *
3334 : * XXX this is completely broken because there is no way to lock the domain
3335 : * to prevent columns from being added or dropped while our command runs.
3336 : * We can partially protect against column drops by locking relations as we
3337 : * come across them, but there is still a race condition (the window between
3338 : * seeing a pg_depend entry and acquiring lock on the relation it references).
3339 : * Also, holding locks on all these relations simultaneously creates a non-
3340 : * trivial risk of deadlock. We can minimize but not eliminate the deadlock
3341 : * risk by using the weakest suitable lock (ShareLock for most callers).
3342 : *
3343 : * XXX the API for this is not sufficient to support checking domain values
3344 : * that are inside container types, such as composite types, arrays, or
3345 : * ranges. Currently we just error out if a container type containing the
3346 : * target domain is stored anywhere.
3347 : *
3348 : * Generally used for retrieving a list of tests when adding
3349 : * new constraints to a domain.
3350 : */
3351 : static List *
3352 204 : get_rels_with_domain(Oid domainOid, LOCKMODE lockmode)
3353 : {
3354 204 : List *result = NIL;
3355 204 : char *domainTypeName = format_type_be(domainOid);
3356 : Relation depRel;
3357 : ScanKeyData key[2];
3358 : SysScanDesc depScan;
3359 : HeapTuple depTup;
3360 :
3361 : Assert(lockmode != NoLock);
3362 :
3363 : /* since this function recurses, it could be driven to stack overflow */
3364 204 : check_stack_depth();
3365 :
3366 : /*
3367 : * We scan pg_depend to find those things that depend on the domain. (We
3368 : * assume we can ignore refobjsubid for a domain.)
3369 : */
3370 204 : depRel = table_open(DependRelationId, AccessShareLock);
3371 :
3372 204 : ScanKeyInit(&key[0],
3373 : Anum_pg_depend_refclassid,
3374 : BTEqualStrategyNumber, F_OIDEQ,
3375 : ObjectIdGetDatum(TypeRelationId));
3376 204 : ScanKeyInit(&key[1],
3377 : Anum_pg_depend_refobjid,
3378 : BTEqualStrategyNumber, F_OIDEQ,
3379 : ObjectIdGetDatum(domainOid));
3380 :
3381 204 : depScan = systable_beginscan(depRel, DependReferenceIndexId, true,
3382 : NULL, 2, key);
3383 :
3384 704 : while (HeapTupleIsValid(depTup = systable_getnext(depScan)))
3385 : {
3386 530 : Form_pg_depend pg_depend = (Form_pg_depend) GETSTRUCT(depTup);
3387 530 : RelToCheck *rtc = NULL;
3388 : ListCell *rellist;
3389 : Form_pg_attribute pg_att;
3390 : int ptr;
3391 :
3392 : /* Check for directly dependent types */
3393 530 : if (pg_depend->classid == TypeRelationId)
3394 : {
3395 222 : if (get_typtype(pg_depend->objid) == TYPTYPE_DOMAIN)
3396 : {
3397 : /*
3398 : * This is a sub-domain, so recursively add dependent columns
3399 : * to the output list. This is a bit inefficient since we may
3400 : * fail to combine RelToCheck entries when attributes of the
3401 : * same rel have different derived domain types, but it's
3402 : * probably not worth improving.
3403 : */
3404 12 : result = list_concat(result,
3405 12 : get_rels_with_domain(pg_depend->objid,
3406 : lockmode));
3407 : }
3408 : else
3409 : {
3410 : /*
3411 : * Otherwise, it is some container type using the domain, so
3412 : * fail if there are any columns of this type.
3413 : */
3414 210 : find_composite_type_dependencies(pg_depend->objid,
3415 : NULL,
3416 : domainTypeName);
3417 : }
3418 216 : continue;
3419 : }
3420 :
3421 : /* Else, ignore dependees that aren't user columns of relations */
3422 : /* (we assume system columns are never of domain types) */
3423 308 : if (pg_depend->classid != RelationRelationId ||
3424 216 : pg_depend->objsubid <= 0)
3425 92 : continue;
3426 :
3427 : /* See if we already have an entry for this relation */
3428 216 : foreach(rellist, result)
3429 : {
3430 42 : RelToCheck *rt = (RelToCheck *) lfirst(rellist);
3431 :
3432 42 : if (RelationGetRelid(rt->rel) == pg_depend->objid)
3433 : {
3434 42 : rtc = rt;
3435 42 : break;
3436 : }
3437 : }
3438 :
3439 216 : if (rtc == NULL)
3440 : {
3441 : /* First attribute found for this relation */
3442 : Relation rel;
3443 :
3444 : /* Acquire requested lock on relation */
3445 174 : rel = relation_open(pg_depend->objid, lockmode);
3446 :
3447 : /*
3448 : * Check to see if rowtype is stored anyplace as a composite-type
3449 : * column; if so we have to fail, for now anyway.
3450 : */
3451 174 : if (OidIsValid(rel->rd_rel->reltype))
3452 174 : find_composite_type_dependencies(rel->rd_rel->reltype,
3453 : NULL,
3454 : domainTypeName);
3455 :
3456 : /*
3457 : * Otherwise, we can ignore relations except those with both
3458 : * storage and user-chosen column types.
3459 : *
3460 : * XXX If an index-only scan could satisfy "col::some_domain" from
3461 : * a suitable expression index, this should also check expression
3462 : * index columns.
3463 : */
3464 150 : if (rel->rd_rel->relkind != RELKIND_RELATION &&
3465 36 : rel->rd_rel->relkind != RELKIND_MATVIEW)
3466 : {
3467 36 : relation_close(rel, lockmode);
3468 36 : continue;
3469 : }
3470 :
3471 : /* Build the RelToCheck entry with enough space for all atts */
3472 114 : rtc = palloc_object(RelToCheck);
3473 114 : rtc->rel = rel;
3474 114 : rtc->natts = 0;
3475 114 : rtc->atts = palloc_array(int, RelationGetNumberOfAttributes(rel));
3476 114 : result = lappend(result, rtc);
3477 : }
3478 :
3479 : /*
3480 : * Confirm column has not been dropped, and is of the expected type.
3481 : * This defends against an ALTER DROP COLUMN occurring just before we
3482 : * acquired lock ... but if the whole table were dropped, we'd still
3483 : * have a problem.
3484 : */
3485 156 : if (pg_depend->objsubid > RelationGetNumberOfAttributes(rtc->rel))
3486 0 : continue;
3487 156 : pg_att = TupleDescAttr(rtc->rel->rd_att, pg_depend->objsubid - 1);
3488 156 : if (pg_att->attisdropped || pg_att->atttypid != domainOid)
3489 0 : continue;
3490 :
3491 : /*
3492 : * Okay, add column to result. We store the columns in column-number
3493 : * order; this is just a hack to improve predictability of regression
3494 : * test output ...
3495 : */
3496 : Assert(rtc->natts < RelationGetNumberOfAttributes(rtc->rel));
3497 :
3498 156 : ptr = rtc->natts++;
3499 156 : while (ptr > 0 && rtc->atts[ptr - 1] > pg_depend->objsubid)
3500 : {
3501 0 : rtc->atts[ptr] = rtc->atts[ptr - 1];
3502 0 : ptr--;
3503 : }
3504 156 : rtc->atts[ptr] = pg_depend->objsubid;
3505 : }
3506 :
3507 174 : systable_endscan(depScan);
3508 :
3509 174 : relation_close(depRel, AccessShareLock);
3510 :
3511 174 : return result;
3512 : }
3513 :
3514 : /*
3515 : * checkDomainOwner
3516 : *
3517 : * Check that the type is actually a domain and that the current user
3518 : * has permission to do ALTER DOMAIN on it. Throw an error if not.
3519 : */
3520 : void
3521 310 : checkDomainOwner(HeapTuple tup)
3522 : {
3523 310 : Form_pg_type typTup = (Form_pg_type) GETSTRUCT(tup);
3524 :
3525 : /* Check that this is actually a domain */
3526 310 : if (typTup->typtype != TYPTYPE_DOMAIN)
3527 0 : ereport(ERROR,
3528 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3529 : errmsg("%s is not a domain",
3530 : format_type_be(typTup->oid))));
3531 :
3532 : /* Permission check: must own type */
3533 310 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
3534 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
3535 310 : }
3536 :
3537 : /*
3538 : * domainAddCheckConstraint - code shared between CREATE and ALTER DOMAIN
3539 : */
3540 : static char *
3541 706 : domainAddCheckConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
3542 : int typMod, Constraint *constr,
3543 : const char *domainName, ObjectAddress *constrAddr)
3544 : {
3545 : Node *expr;
3546 : char *ccbin;
3547 : ParseState *pstate;
3548 : CoerceToDomainValue *domVal;
3549 : Oid ccoid;
3550 :
3551 : Assert(constr->contype == CONSTR_CHECK);
3552 :
3553 : /*
3554 : * Assign or validate constraint name
3555 : */
3556 706 : if (constr->conname)
3557 : {
3558 400 : if (ConstraintNameIsUsed(CONSTRAINT_DOMAIN,
3559 : domainOid,
3560 400 : constr->conname))
3561 0 : ereport(ERROR,
3562 : (errcode(ERRCODE_DUPLICATE_OBJECT),
3563 : errmsg("constraint \"%s\" for domain \"%s\" already exists",
3564 : constr->conname, domainName)));
3565 : }
3566 : else
3567 306 : constr->conname = ChooseConstraintName(domainName,
3568 : NULL,
3569 : "check",
3570 : domainNamespace,
3571 : NIL);
3572 :
3573 : /*
3574 : * Convert the A_EXPR in raw_expr into an EXPR
3575 : */
3576 706 : pstate = make_parsestate(NULL);
3577 :
3578 : /*
3579 : * Set up a CoerceToDomainValue to represent the occurrence of VALUE in
3580 : * the expression. Note that it will appear to have the type of the base
3581 : * type, not the domain. This seems correct since within the check
3582 : * expression, we should not assume the input value can be considered a
3583 : * member of the domain.
3584 : */
3585 706 : domVal = makeNode(CoerceToDomainValue);
3586 706 : domVal->typeId = baseTypeOid;
3587 706 : domVal->typeMod = typMod;
3588 706 : domVal->collation = get_typcollation(baseTypeOid);
3589 706 : domVal->location = -1; /* will be set when/if used */
3590 :
3591 706 : pstate->p_pre_columnref_hook = replace_domain_constraint_value;
3592 706 : pstate->p_ref_hook_state = domVal;
3593 :
3594 706 : expr = transformExpr(pstate, constr->raw_expr, EXPR_KIND_DOMAIN_CHECK);
3595 :
3596 : /*
3597 : * Make sure it yields a boolean result.
3598 : */
3599 700 : expr = coerce_to_boolean(pstate, expr, "CHECK");
3600 :
3601 : /*
3602 : * Fix up collation information.
3603 : */
3604 700 : assign_expr_collations(pstate, expr);
3605 :
3606 : /*
3607 : * Domains don't allow variables (this is probably dead code now that
3608 : * add_missing_from is history, but let's be sure).
3609 : */
3610 1400 : if (pstate->p_rtable != NIL ||
3611 700 : contain_var_clause(expr))
3612 0 : ereport(ERROR,
3613 : (errcode(ERRCODE_INVALID_COLUMN_REFERENCE),
3614 : errmsg("cannot use table references in domain check constraint")));
3615 :
3616 : /*
3617 : * Convert to string form for storage.
3618 : */
3619 700 : ccbin = nodeToString(expr);
3620 :
3621 : /*
3622 : * Store the constraint in pg_constraint
3623 : */
3624 : ccoid =
3625 700 : CreateConstraintEntry(constr->conname, /* Constraint Name */
3626 : domainNamespace, /* namespace */
3627 : CONSTRAINT_CHECK, /* Constraint Type */
3628 : false, /* Is Deferrable */
3629 : false, /* Is Deferred */
3630 : true, /* Is Enforced */
3631 700 : !constr->skip_validation, /* Is Validated */
3632 : InvalidOid, /* no parent constraint */
3633 : InvalidOid, /* not a relation constraint */
3634 : NULL,
3635 : 0,
3636 : 0,
3637 : domainOid, /* domain constraint */
3638 : InvalidOid, /* no associated index */
3639 : InvalidOid, /* Foreign key fields */
3640 : NULL,
3641 : NULL,
3642 : NULL,
3643 : NULL,
3644 : 0,
3645 : ' ',
3646 : ' ',
3647 : NULL,
3648 : 0,
3649 : ' ',
3650 : NULL, /* not an exclusion constraint */
3651 : expr, /* Tree form of check constraint */
3652 : ccbin, /* Binary form of check constraint */
3653 : true, /* is local */
3654 : 0, /* inhcount */
3655 : false, /* connoinherit */
3656 : false, /* conperiod */
3657 700 : false); /* is_internal */
3658 700 : if (constrAddr)
3659 138 : ObjectAddressSet(*constrAddr, ConstraintRelationId, ccoid);
3660 :
3661 : /*
3662 : * Return the compiled constraint expression so the calling routine can
3663 : * perform any additional required tests.
3664 : */
3665 700 : return ccbin;
3666 : }
3667 :
3668 : /* Parser pre_columnref_hook for domain CHECK constraint parsing */
3669 : static Node *
3670 810 : replace_domain_constraint_value(ParseState *pstate, ColumnRef *cref)
3671 : {
3672 : /*
3673 : * Check for a reference to "value", and if that's what it is, replace
3674 : * with a CoerceToDomainValue as prepared for us by
3675 : * domainAddCheckConstraint. (We handle VALUE as a name, not a keyword, to
3676 : * avoid breaking a lot of applications that have used VALUE as a column
3677 : * name in the past.)
3678 : */
3679 810 : if (list_length(cref->fields) == 1)
3680 : {
3681 810 : Node *field1 = (Node *) linitial(cref->fields);
3682 : char *colname;
3683 :
3684 810 : colname = strVal(field1);
3685 810 : if (strcmp(colname, "value") == 0)
3686 : {
3687 810 : CoerceToDomainValue *domVal = copyObject(pstate->p_ref_hook_state);
3688 :
3689 : /* Propagate location knowledge, if any */
3690 810 : domVal->location = cref->location;
3691 810 : return (Node *) domVal;
3692 : }
3693 : }
3694 0 : return NULL;
3695 : }
3696 :
3697 : /*
3698 : * domainAddNotNullConstraint - code shared between CREATE and ALTER DOMAIN
3699 : */
3700 : static void
3701 130 : domainAddNotNullConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
3702 : int typMod, Constraint *constr,
3703 : const char *domainName, ObjectAddress *constrAddr)
3704 : {
3705 : Oid ccoid;
3706 :
3707 : Assert(constr->contype == CONSTR_NOTNULL);
3708 :
3709 : /*
3710 : * Assign or validate constraint name
3711 : */
3712 130 : if (constr->conname)
3713 : {
3714 14 : if (ConstraintNameIsUsed(CONSTRAINT_DOMAIN,
3715 : domainOid,
3716 14 : constr->conname))
3717 0 : ereport(ERROR,
3718 : (errcode(ERRCODE_DUPLICATE_OBJECT),
3719 : errmsg("constraint \"%s\" for domain \"%s\" already exists",
3720 : constr->conname, domainName)));
3721 : }
3722 : else
3723 116 : constr->conname = ChooseConstraintName(domainName,
3724 : NULL,
3725 : "not_null",
3726 : domainNamespace,
3727 : NIL);
3728 :
3729 : /*
3730 : * Store the constraint in pg_constraint
3731 : */
3732 : ccoid =
3733 130 : CreateConstraintEntry(constr->conname, /* Constraint Name */
3734 : domainNamespace, /* namespace */
3735 : CONSTRAINT_NOTNULL, /* Constraint Type */
3736 : false, /* Is Deferrable */
3737 : false, /* Is Deferred */
3738 : true, /* Is Enforced */
3739 130 : !constr->skip_validation, /* Is Validated */
3740 : InvalidOid, /* no parent constraint */
3741 : InvalidOid, /* not a relation constraint */
3742 : NULL,
3743 : 0,
3744 : 0,
3745 : domainOid, /* domain constraint */
3746 : InvalidOid, /* no associated index */
3747 : InvalidOid, /* Foreign key fields */
3748 : NULL,
3749 : NULL,
3750 : NULL,
3751 : NULL,
3752 : 0,
3753 : ' ',
3754 : ' ',
3755 : NULL,
3756 : 0,
3757 : ' ',
3758 : NULL, /* not an exclusion constraint */
3759 : NULL,
3760 : NULL,
3761 : true, /* is local */
3762 : 0, /* inhcount */
3763 : false, /* connoinherit */
3764 : false, /* conperiod */
3765 130 : false); /* is_internal */
3766 :
3767 130 : if (constrAddr)
3768 24 : ObjectAddressSet(*constrAddr, ConstraintRelationId, ccoid);
3769 130 : }
3770 :
3771 :
3772 : /*
3773 : * Execute ALTER TYPE RENAME
3774 : */
3775 : ObjectAddress
3776 32 : RenameType(RenameStmt *stmt)
3777 : {
3778 32 : List *names = castNode(List, stmt->object);
3779 32 : const char *newTypeName = stmt->newname;
3780 : TypeName *typename;
3781 : Oid typeOid;
3782 : Relation rel;
3783 : HeapTuple tup;
3784 : Form_pg_type typTup;
3785 : ObjectAddress address;
3786 :
3787 : /* Make a TypeName so we can use standard type lookup machinery */
3788 32 : typename = makeTypeNameFromNameList(names);
3789 32 : typeOid = typenameTypeId(NULL, typename);
3790 :
3791 : /* Look up the type in the type table */
3792 32 : rel = table_open(TypeRelationId, RowExclusiveLock);
3793 :
3794 32 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
3795 32 : if (!HeapTupleIsValid(tup))
3796 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
3797 32 : typTup = (Form_pg_type) GETSTRUCT(tup);
3798 :
3799 : /* check permissions on type */
3800 32 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
3801 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
3802 :
3803 : /* ALTER DOMAIN used on a non-domain? */
3804 32 : if (stmt->renameType == OBJECT_DOMAIN && typTup->typtype != TYPTYPE_DOMAIN)
3805 0 : ereport(ERROR,
3806 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3807 : errmsg("%s is not a domain",
3808 : format_type_be(typeOid))));
3809 :
3810 : /*
3811 : * If it's a composite type, we need to check that it really is a
3812 : * free-standing composite type, and not a table's rowtype. We want people
3813 : * to use ALTER TABLE not ALTER TYPE for that case.
3814 : */
3815 34 : if (typTup->typtype == TYPTYPE_COMPOSITE &&
3816 2 : get_rel_relkind(typTup->typrelid) != RELKIND_COMPOSITE_TYPE)
3817 0 : ereport(ERROR,
3818 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3819 : errmsg("%s is a table's row type",
3820 : format_type_be(typeOid)),
3821 : /* translator: %s is an SQL ALTER command */
3822 : errhint("Use %s instead.",
3823 : "ALTER TABLE")));
3824 :
3825 : /* don't allow direct alteration of array types, either */
3826 32 : if (IsTrueArrayType(typTup))
3827 0 : ereport(ERROR,
3828 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3829 : errmsg("cannot alter array type %s",
3830 : format_type_be(typeOid)),
3831 : errhint("You can alter type %s, which will alter the array type as well.",
3832 : format_type_be(typTup->typelem))));
3833 :
3834 : /* we do allow separate renaming of multirange types, though */
3835 :
3836 : /*
3837 : * If type is composite we need to rename associated pg_class entry too.
3838 : * RenameRelationInternal will call RenameTypeInternal automatically.
3839 : */
3840 32 : if (typTup->typtype == TYPTYPE_COMPOSITE)
3841 2 : RenameRelationInternal(typTup->typrelid, newTypeName, false, false);
3842 : else
3843 30 : RenameTypeInternal(typeOid, newTypeName,
3844 : typTup->typnamespace);
3845 :
3846 32 : ObjectAddressSet(address, TypeRelationId, typeOid);
3847 : /* Clean up */
3848 32 : table_close(rel, RowExclusiveLock);
3849 :
3850 32 : return address;
3851 : }
3852 :
3853 : /*
3854 : * Change the owner of a type.
3855 : */
3856 : ObjectAddress
3857 132 : AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype)
3858 : {
3859 : TypeName *typename;
3860 : Oid typeOid;
3861 : Relation rel;
3862 : HeapTuple tup;
3863 : HeapTuple newtup;
3864 : Form_pg_type typTup;
3865 : AclResult aclresult;
3866 : ObjectAddress address;
3867 :
3868 132 : rel = table_open(TypeRelationId, RowExclusiveLock);
3869 :
3870 : /* Make a TypeName so we can use standard type lookup machinery */
3871 132 : typename = makeTypeNameFromNameList(names);
3872 :
3873 : /* Use LookupTypeName here so that shell types can be processed */
3874 132 : tup = LookupTypeName(NULL, typename, NULL, false);
3875 132 : if (tup == NULL)
3876 0 : ereport(ERROR,
3877 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3878 : errmsg("type \"%s\" does not exist",
3879 : TypeNameToString(typename))));
3880 132 : typeOid = typeTypeId(tup);
3881 :
3882 : /* Copy the syscache entry so we can scribble on it below */
3883 132 : newtup = heap_copytuple(tup);
3884 132 : ReleaseSysCache(tup);
3885 132 : tup = newtup;
3886 132 : typTup = (Form_pg_type) GETSTRUCT(tup);
3887 :
3888 : /* Don't allow ALTER DOMAIN on a type */
3889 132 : if (objecttype == OBJECT_DOMAIN && typTup->typtype != TYPTYPE_DOMAIN)
3890 0 : ereport(ERROR,
3891 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3892 : errmsg("%s is not a domain",
3893 : format_type_be(typeOid))));
3894 :
3895 : /*
3896 : * If it's a composite type, we need to check that it really is a
3897 : * free-standing composite type, and not a table's rowtype. We want people
3898 : * to use ALTER TABLE not ALTER TYPE for that case.
3899 : */
3900 164 : if (typTup->typtype == TYPTYPE_COMPOSITE &&
3901 32 : get_rel_relkind(typTup->typrelid) != RELKIND_COMPOSITE_TYPE)
3902 0 : ereport(ERROR,
3903 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3904 : errmsg("%s is a table's row type",
3905 : format_type_be(typeOid)),
3906 : /* translator: %s is an SQL ALTER command */
3907 : errhint("Use %s instead.",
3908 : "ALTER TABLE")));
3909 :
3910 : /* don't allow direct alteration of array types, either */
3911 132 : if (IsTrueArrayType(typTup))
3912 0 : ereport(ERROR,
3913 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3914 : errmsg("cannot alter array type %s",
3915 : format_type_be(typeOid)),
3916 : errhint("You can alter type %s, which will alter the array type as well.",
3917 : format_type_be(typTup->typelem))));
3918 :
3919 : /* don't allow direct alteration of multirange types, either */
3920 132 : if (typTup->typtype == TYPTYPE_MULTIRANGE)
3921 : {
3922 6 : Oid rangetype = get_multirange_range(typeOid);
3923 :
3924 : /* We don't expect get_multirange_range to fail, but cope if so */
3925 6 : ereport(ERROR,
3926 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3927 : errmsg("cannot alter multirange type %s",
3928 : format_type_be(typeOid)),
3929 : OidIsValid(rangetype) ?
3930 : errhint("You can alter type %s, which will alter the multirange type as well.",
3931 : format_type_be(rangetype)) : 0));
3932 : }
3933 :
3934 : /*
3935 : * If the new owner is the same as the existing owner, consider the
3936 : * command to have succeeded. This is for dump restoration purposes.
3937 : */
3938 126 : if (typTup->typowner != newOwnerId)
3939 : {
3940 : /* Superusers can always do it */
3941 6 : if (!superuser())
3942 : {
3943 : /* Otherwise, must be owner of the existing object */
3944 0 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
3945 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
3946 :
3947 : /* Must be able to become new owner */
3948 0 : check_can_set_role(GetUserId(), newOwnerId);
3949 :
3950 : /* New owner must have CREATE privilege on namespace */
3951 0 : aclresult = object_aclcheck(NamespaceRelationId, typTup->typnamespace,
3952 : newOwnerId,
3953 : ACL_CREATE);
3954 0 : if (aclresult != ACLCHECK_OK)
3955 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
3956 0 : get_namespace_name(typTup->typnamespace));
3957 : }
3958 :
3959 6 : AlterTypeOwner_oid(typeOid, newOwnerId, true);
3960 : }
3961 :
3962 126 : ObjectAddressSet(address, TypeRelationId, typeOid);
3963 :
3964 : /* Clean up */
3965 126 : table_close(rel, RowExclusiveLock);
3966 :
3967 126 : return address;
3968 : }
3969 :
3970 : /*
3971 : * AlterTypeOwner_oid - change type owner unconditionally
3972 : *
3973 : * This function recurses to handle dependent types (arrays and multiranges).
3974 : * It invokes any necessary access object hooks. If hasDependEntry is true,
3975 : * this function modifies the pg_shdepend entry appropriately (this should be
3976 : * passed as false only for table rowtypes and dependent types).
3977 : *
3978 : * This is used by ALTER TABLE/TYPE OWNER commands, as well as by REASSIGN
3979 : * OWNED BY. It assumes the caller has done all needed checks.
3980 : */
3981 : void
3982 26 : AlterTypeOwner_oid(Oid typeOid, Oid newOwnerId, bool hasDependEntry)
3983 : {
3984 : Relation rel;
3985 : HeapTuple tup;
3986 : Form_pg_type typTup;
3987 :
3988 26 : rel = table_open(TypeRelationId, RowExclusiveLock);
3989 :
3990 26 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typeOid));
3991 26 : if (!HeapTupleIsValid(tup))
3992 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
3993 26 : typTup = (Form_pg_type) GETSTRUCT(tup);
3994 :
3995 : /*
3996 : * If it's a composite type, invoke ATExecChangeOwner so that we fix up
3997 : * the pg_class entry properly. That will call back to
3998 : * AlterTypeOwnerInternal to take care of the pg_type entry(s).
3999 : */
4000 26 : if (typTup->typtype == TYPTYPE_COMPOSITE)
4001 8 : ATExecChangeOwner(typTup->typrelid, newOwnerId, true, AccessExclusiveLock);
4002 : else
4003 18 : AlterTypeOwnerInternal(typeOid, newOwnerId);
4004 :
4005 : /* Update owner dependency reference */
4006 26 : if (hasDependEntry)
4007 26 : changeDependencyOnOwner(TypeRelationId, typeOid, newOwnerId);
4008 :
4009 26 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4010 :
4011 26 : ReleaseSysCache(tup);
4012 26 : table_close(rel, RowExclusiveLock);
4013 26 : }
4014 :
4015 : /*
4016 : * AlterTypeOwnerInternal - bare-bones type owner change.
4017 : *
4018 : * This routine simply modifies the owner of a pg_type entry, and recurses
4019 : * to handle any dependent types.
4020 : */
4021 : void
4022 744 : AlterTypeOwnerInternal(Oid typeOid, Oid newOwnerId)
4023 : {
4024 : Relation rel;
4025 : HeapTuple tup;
4026 : Form_pg_type typTup;
4027 : Datum repl_val[Natts_pg_type];
4028 : bool repl_null[Natts_pg_type];
4029 : bool repl_repl[Natts_pg_type];
4030 : Acl *newAcl;
4031 : Datum aclDatum;
4032 : bool isNull;
4033 :
4034 744 : rel = table_open(TypeRelationId, RowExclusiveLock);
4035 :
4036 744 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
4037 744 : if (!HeapTupleIsValid(tup))
4038 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
4039 744 : typTup = (Form_pg_type) GETSTRUCT(tup);
4040 :
4041 744 : memset(repl_null, false, sizeof(repl_null));
4042 744 : memset(repl_repl, false, sizeof(repl_repl));
4043 :
4044 744 : repl_repl[Anum_pg_type_typowner - 1] = true;
4045 744 : repl_val[Anum_pg_type_typowner - 1] = ObjectIdGetDatum(newOwnerId);
4046 :
4047 744 : aclDatum = heap_getattr(tup,
4048 : Anum_pg_type_typacl,
4049 : RelationGetDescr(rel),
4050 : &isNull);
4051 : /* Null ACLs do not require changes */
4052 744 : if (!isNull)
4053 : {
4054 2 : newAcl = aclnewowner(DatumGetAclP(aclDatum),
4055 : typTup->typowner, newOwnerId);
4056 2 : repl_repl[Anum_pg_type_typacl - 1] = true;
4057 2 : repl_val[Anum_pg_type_typacl - 1] = PointerGetDatum(newAcl);
4058 : }
4059 :
4060 744 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), repl_val, repl_null,
4061 : repl_repl);
4062 :
4063 744 : CatalogTupleUpdate(rel, &tup->t_self, tup);
4064 :
4065 : /* If it has an array type, update that too */
4066 744 : if (OidIsValid(typTup->typarray))
4067 372 : AlterTypeOwnerInternal(typTup->typarray, newOwnerId);
4068 :
4069 : /* If it is a range type, update the associated multirange too */
4070 744 : if (typTup->typtype == TYPTYPE_RANGE)
4071 : {
4072 12 : Oid multirange_typeid = get_range_multirange(typeOid);
4073 :
4074 12 : if (!OidIsValid(multirange_typeid))
4075 0 : ereport(ERROR,
4076 : (errcode(ERRCODE_UNDEFINED_OBJECT),
4077 : errmsg("could not find multirange type for data type %s",
4078 : format_type_be(typeOid))));
4079 12 : AlterTypeOwnerInternal(multirange_typeid, newOwnerId);
4080 : }
4081 :
4082 : /* Clean up */
4083 744 : table_close(rel, RowExclusiveLock);
4084 744 : }
4085 :
4086 : /*
4087 : * Execute ALTER TYPE SET SCHEMA
4088 : */
4089 : ObjectAddress
4090 18 : AlterTypeNamespace(List *names, const char *newschema, ObjectType objecttype,
4091 : Oid *oldschema)
4092 : {
4093 : TypeName *typename;
4094 : Oid typeOid;
4095 : Oid nspOid;
4096 : Oid oldNspOid;
4097 : ObjectAddresses *objsMoved;
4098 : ObjectAddress myself;
4099 :
4100 : /* Make a TypeName so we can use standard type lookup machinery */
4101 18 : typename = makeTypeNameFromNameList(names);
4102 18 : typeOid = typenameTypeId(NULL, typename);
4103 :
4104 : /* Don't allow ALTER DOMAIN on a non-domain type */
4105 18 : if (objecttype == OBJECT_DOMAIN && get_typtype(typeOid) != TYPTYPE_DOMAIN)
4106 0 : ereport(ERROR,
4107 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4108 : errmsg("%s is not a domain",
4109 : format_type_be(typeOid))));
4110 :
4111 : /* get schema OID and check its permissions */
4112 18 : nspOid = LookupCreationNamespace(newschema);
4113 :
4114 18 : objsMoved = new_object_addresses();
4115 18 : oldNspOid = AlterTypeNamespace_oid(typeOid, nspOid, false, objsMoved);
4116 18 : free_object_addresses(objsMoved);
4117 :
4118 18 : if (oldschema)
4119 18 : *oldschema = oldNspOid;
4120 :
4121 18 : ObjectAddressSet(myself, TypeRelationId, typeOid);
4122 :
4123 18 : return myself;
4124 : }
4125 :
4126 : /*
4127 : * ALTER TYPE SET SCHEMA, where the caller has already looked up the OIDs
4128 : * of the type and the target schema and checked the schema's privileges.
4129 : *
4130 : * If ignoreDependent is true, we silently ignore dependent types
4131 : * (array types and table rowtypes) rather than raising errors.
4132 : *
4133 : * This entry point is exported for use by AlterObjectNamespace_oid,
4134 : * which doesn't want errors when it passes OIDs of dependent types.
4135 : *
4136 : * Returns the type's old namespace OID, or InvalidOid if we did nothing.
4137 : */
4138 : Oid
4139 34 : AlterTypeNamespace_oid(Oid typeOid, Oid nspOid, bool ignoreDependent,
4140 : ObjectAddresses *objsMoved)
4141 : {
4142 : Oid elemOid;
4143 :
4144 : /* check permissions on type */
4145 34 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
4146 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
4147 :
4148 : /* don't allow direct alteration of array types */
4149 34 : elemOid = get_element_type(typeOid);
4150 34 : if (OidIsValid(elemOid) && get_array_type(elemOid) == typeOid)
4151 : {
4152 8 : if (ignoreDependent)
4153 8 : return InvalidOid;
4154 0 : ereport(ERROR,
4155 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4156 : errmsg("cannot alter array type %s",
4157 : format_type_be(typeOid)),
4158 : errhint("You can alter type %s, which will alter the array type as well.",
4159 : format_type_be(elemOid))));
4160 : }
4161 :
4162 : /* and do the work */
4163 26 : return AlterTypeNamespaceInternal(typeOid, nspOid,
4164 : false, /* isImplicitArray */
4165 : ignoreDependent, /* ignoreDependent */
4166 : true, /* errorOnTableType */
4167 : objsMoved);
4168 : }
4169 :
4170 : /*
4171 : * Move specified type to new namespace.
4172 : *
4173 : * Caller must have already checked privileges.
4174 : *
4175 : * The function automatically recurses to process the type's array type,
4176 : * if any. isImplicitArray should be true only when doing this internal
4177 : * recursion (outside callers must never try to move an array type directly).
4178 : *
4179 : * If ignoreDependent is true, we silently don't process table types.
4180 : *
4181 : * If errorOnTableType is true, the function errors out if the type is
4182 : * a table type. ALTER TABLE has to be used to move a table to a new
4183 : * namespace. (This flag is ignored if ignoreDependent is true.)
4184 : *
4185 : * We also do nothing if the type is already listed in *objsMoved.
4186 : * After a successful move, we add the type to *objsMoved.
4187 : *
4188 : * Returns the type's old namespace OID, or InvalidOid if we did nothing.
4189 : */
4190 : Oid
4191 218 : AlterTypeNamespaceInternal(Oid typeOid, Oid nspOid,
4192 : bool isImplicitArray,
4193 : bool ignoreDependent,
4194 : bool errorOnTableType,
4195 : ObjectAddresses *objsMoved)
4196 : {
4197 : Relation rel;
4198 : HeapTuple tup;
4199 : Form_pg_type typform;
4200 : Oid oldNspOid;
4201 : Oid arrayOid;
4202 : bool isCompositeType;
4203 : ObjectAddress thisobj;
4204 :
4205 : /*
4206 : * Make sure we haven't moved this object previously.
4207 : */
4208 218 : thisobj.classId = TypeRelationId;
4209 218 : thisobj.objectId = typeOid;
4210 218 : thisobj.objectSubId = 0;
4211 :
4212 218 : if (object_address_present(&thisobj, objsMoved))
4213 0 : return InvalidOid;
4214 :
4215 218 : rel = table_open(TypeRelationId, RowExclusiveLock);
4216 :
4217 218 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
4218 218 : if (!HeapTupleIsValid(tup))
4219 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
4220 218 : typform = (Form_pg_type) GETSTRUCT(tup);
4221 :
4222 218 : oldNspOid = typform->typnamespace;
4223 218 : arrayOid = typform->typarray;
4224 :
4225 : /* If the type is already there, we scan skip these next few checks. */
4226 218 : if (oldNspOid != nspOid)
4227 : {
4228 : /* common checks on switching namespaces */
4229 182 : CheckSetNamespace(oldNspOid, nspOid);
4230 :
4231 : /* check for duplicate name (more friendly than unique-index failure) */
4232 182 : if (SearchSysCacheExists2(TYPENAMENSP,
4233 : NameGetDatum(&typform->typname),
4234 : ObjectIdGetDatum(nspOid)))
4235 0 : ereport(ERROR,
4236 : (errcode(ERRCODE_DUPLICATE_OBJECT),
4237 : errmsg("type \"%s\" already exists in schema \"%s\"",
4238 : NameStr(typform->typname),
4239 : get_namespace_name(nspOid))));
4240 : }
4241 :
4242 : /* Detect whether type is a composite type (but not a table rowtype) */
4243 218 : isCompositeType =
4244 318 : (typform->typtype == TYPTYPE_COMPOSITE &&
4245 100 : get_rel_relkind(typform->typrelid) == RELKIND_COMPOSITE_TYPE);
4246 :
4247 : /* Enforce not-table-type if requested */
4248 218 : if (typform->typtype == TYPTYPE_COMPOSITE && !isCompositeType)
4249 : {
4250 86 : if (ignoreDependent)
4251 : {
4252 2 : table_close(rel, RowExclusiveLock);
4253 2 : return InvalidOid;
4254 : }
4255 84 : if (errorOnTableType)
4256 0 : ereport(ERROR,
4257 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4258 : errmsg("%s is a table's row type",
4259 : format_type_be(typeOid)),
4260 : /* translator: %s is an SQL ALTER command */
4261 : errhint("Use %s instead.", "ALTER TABLE")));
4262 : }
4263 :
4264 216 : if (oldNspOid != nspOid)
4265 : {
4266 : /* OK, modify the pg_type row */
4267 :
4268 : /* tup is a copy, so we can scribble directly on it */
4269 180 : typform->typnamespace = nspOid;
4270 :
4271 180 : CatalogTupleUpdate(rel, &tup->t_self, tup);
4272 : }
4273 :
4274 : /*
4275 : * Composite types have pg_class entries.
4276 : *
4277 : * We need to modify the pg_class tuple as well to reflect the change of
4278 : * schema.
4279 : */
4280 216 : if (isCompositeType)
4281 : {
4282 : Relation classRel;
4283 :
4284 14 : classRel = table_open(RelationRelationId, RowExclusiveLock);
4285 :
4286 14 : AlterRelationNamespaceInternal(classRel, typform->typrelid,
4287 : oldNspOid, nspOid,
4288 : false, objsMoved);
4289 :
4290 14 : table_close(classRel, RowExclusiveLock);
4291 :
4292 : /*
4293 : * Check for constraints associated with the composite type (we don't
4294 : * currently support this, but probably will someday).
4295 : */
4296 14 : AlterConstraintNamespaces(typform->typrelid, oldNspOid,
4297 : nspOid, false, objsMoved);
4298 : }
4299 : else
4300 : {
4301 : /* If it's a domain, it might have constraints */
4302 202 : if (typform->typtype == TYPTYPE_DOMAIN)
4303 6 : AlterConstraintNamespaces(typeOid, oldNspOid, nspOid, true,
4304 : objsMoved);
4305 : }
4306 :
4307 : /*
4308 : * Update dependency on schema, if any --- a table rowtype has not got
4309 : * one, and neither does an implicit array.
4310 : */
4311 216 : if (oldNspOid != nspOid &&
4312 172 : (isCompositeType || typform->typtype != TYPTYPE_COMPOSITE) &&
4313 108 : !isImplicitArray)
4314 18 : if (changeDependencyFor(TypeRelationId, typeOid,
4315 : NamespaceRelationId, oldNspOid, nspOid) != 1)
4316 0 : elog(ERROR, "could not change schema dependency for type \"%s\"",
4317 : format_type_be(typeOid));
4318 :
4319 216 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4320 :
4321 216 : heap_freetuple(tup);
4322 :
4323 216 : table_close(rel, RowExclusiveLock);
4324 :
4325 216 : add_exact_object_address(&thisobj, objsMoved);
4326 :
4327 : /* Recursively alter the associated array type, if any */
4328 216 : if (OidIsValid(arrayOid))
4329 108 : AlterTypeNamespaceInternal(arrayOid, nspOid,
4330 : true, /* isImplicitArray */
4331 : false, /* ignoreDependent */
4332 : true, /* errorOnTableType */
4333 : objsMoved);
4334 :
4335 216 : return oldNspOid;
4336 : }
4337 :
4338 : /*
4339 : * AlterType
4340 : * ALTER TYPE <type> SET (option = ...)
4341 : *
4342 : * NOTE: the set of changes that can be allowed here is constrained by many
4343 : * non-obvious implementation restrictions. Tread carefully when considering
4344 : * adding new flexibility.
4345 : */
4346 : ObjectAddress
4347 60 : AlterType(AlterTypeStmt *stmt)
4348 : {
4349 : ObjectAddress address;
4350 : Relation catalog;
4351 : TypeName *typename;
4352 : HeapTuple tup;
4353 : Oid typeOid;
4354 : Form_pg_type typForm;
4355 60 : bool requireSuper = false;
4356 : AlterTypeRecurseParams atparams;
4357 : ListCell *pl;
4358 :
4359 60 : catalog = table_open(TypeRelationId, RowExclusiveLock);
4360 :
4361 : /* Make a TypeName so we can use standard type lookup machinery */
4362 60 : typename = makeTypeNameFromNameList(stmt->typeName);
4363 60 : tup = typenameType(NULL, typename, NULL);
4364 :
4365 54 : typeOid = typeTypeId(tup);
4366 54 : typForm = (Form_pg_type) GETSTRUCT(tup);
4367 :
4368 : /* Process options */
4369 54 : memset(&atparams, 0, sizeof(atparams));
4370 154 : foreach(pl, stmt->options)
4371 : {
4372 106 : DefElem *defel = (DefElem *) lfirst(pl);
4373 :
4374 106 : if (strcmp(defel->defname, "storage") == 0)
4375 : {
4376 12 : char *a = defGetString(defel);
4377 :
4378 12 : if (pg_strcasecmp(a, "plain") == 0)
4379 6 : atparams.storage = TYPSTORAGE_PLAIN;
4380 6 : else if (pg_strcasecmp(a, "external") == 0)
4381 0 : atparams.storage = TYPSTORAGE_EXTERNAL;
4382 6 : else if (pg_strcasecmp(a, "extended") == 0)
4383 6 : atparams.storage = TYPSTORAGE_EXTENDED;
4384 0 : else if (pg_strcasecmp(a, "main") == 0)
4385 0 : atparams.storage = TYPSTORAGE_MAIN;
4386 : else
4387 0 : ereport(ERROR,
4388 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
4389 : errmsg("storage \"%s\" not recognized", a)));
4390 :
4391 : /*
4392 : * Validate the storage request. If the type isn't varlena, it
4393 : * certainly doesn't support non-PLAIN storage.
4394 : */
4395 12 : if (atparams.storage != TYPSTORAGE_PLAIN && typForm->typlen != -1)
4396 0 : ereport(ERROR,
4397 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
4398 : errmsg("fixed-size types must have storage PLAIN")));
4399 :
4400 : /*
4401 : * Switching from PLAIN to non-PLAIN is allowed, but it requires
4402 : * superuser, since we can't validate that the type's C functions
4403 : * will support it. Switching from non-PLAIN to PLAIN is
4404 : * disallowed outright, because it's not practical to ensure that
4405 : * no tables have toasted values of the type. Switching among
4406 : * different non-PLAIN settings is OK, since it just constitutes a
4407 : * change in the strategy requested for columns created in the
4408 : * future.
4409 : */
4410 12 : if (atparams.storage != TYPSTORAGE_PLAIN &&
4411 6 : typForm->typstorage == TYPSTORAGE_PLAIN)
4412 0 : requireSuper = true;
4413 12 : else if (atparams.storage == TYPSTORAGE_PLAIN &&
4414 6 : typForm->typstorage != TYPSTORAGE_PLAIN)
4415 6 : ereport(ERROR,
4416 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
4417 : errmsg("cannot change type's storage to PLAIN")));
4418 :
4419 6 : atparams.updateStorage = true;
4420 : }
4421 94 : else if (strcmp(defel->defname, "receive") == 0)
4422 : {
4423 28 : if (defel->arg != NULL)
4424 28 : atparams.receiveOid =
4425 28 : findTypeReceiveFunction(defGetQualifiedName(defel),
4426 : typeOid);
4427 : else
4428 0 : atparams.receiveOid = InvalidOid; /* NONE, remove function */
4429 28 : atparams.updateReceive = true;
4430 : /* Replacing an I/O function requires superuser. */
4431 28 : requireSuper = true;
4432 : }
4433 66 : else if (strcmp(defel->defname, "send") == 0)
4434 : {
4435 28 : if (defel->arg != NULL)
4436 28 : atparams.sendOid =
4437 28 : findTypeSendFunction(defGetQualifiedName(defel),
4438 : typeOid);
4439 : else
4440 0 : atparams.sendOid = InvalidOid; /* NONE, remove function */
4441 28 : atparams.updateSend = true;
4442 : /* Replacing an I/O function requires superuser. */
4443 28 : requireSuper = true;
4444 : }
4445 38 : else if (strcmp(defel->defname, "typmod_in") == 0)
4446 : {
4447 6 : if (defel->arg != NULL)
4448 6 : atparams.typmodinOid =
4449 6 : findTypeTypmodinFunction(defGetQualifiedName(defel));
4450 : else
4451 0 : atparams.typmodinOid = InvalidOid; /* NONE, remove function */
4452 6 : atparams.updateTypmodin = true;
4453 : /* Replacing an I/O function requires superuser. */
4454 6 : requireSuper = true;
4455 : }
4456 32 : else if (strcmp(defel->defname, "typmod_out") == 0)
4457 : {
4458 6 : if (defel->arg != NULL)
4459 6 : atparams.typmodoutOid =
4460 6 : findTypeTypmodoutFunction(defGetQualifiedName(defel));
4461 : else
4462 0 : atparams.typmodoutOid = InvalidOid; /* NONE, remove function */
4463 6 : atparams.updateTypmodout = true;
4464 : /* Replacing an I/O function requires superuser. */
4465 6 : requireSuper = true;
4466 : }
4467 26 : else if (strcmp(defel->defname, "analyze") == 0)
4468 : {
4469 6 : if (defel->arg != NULL)
4470 6 : atparams.analyzeOid =
4471 6 : findTypeAnalyzeFunction(defGetQualifiedName(defel),
4472 : typeOid);
4473 : else
4474 0 : atparams.analyzeOid = InvalidOid; /* NONE, remove function */
4475 6 : atparams.updateAnalyze = true;
4476 : /* Replacing an analyze function requires superuser. */
4477 6 : requireSuper = true;
4478 : }
4479 20 : else if (strcmp(defel->defname, "subscript") == 0)
4480 : {
4481 20 : if (defel->arg != NULL)
4482 20 : atparams.subscriptOid =
4483 20 : findTypeSubscriptingFunction(defGetQualifiedName(defel),
4484 : typeOid);
4485 : else
4486 0 : atparams.subscriptOid = InvalidOid; /* NONE, remove function */
4487 20 : atparams.updateSubscript = true;
4488 : /* Replacing a subscript function requires superuser. */
4489 20 : requireSuper = true;
4490 : }
4491 :
4492 : /*
4493 : * The rest of the options that CREATE accepts cannot be changed.
4494 : * Check for them so that we can give a meaningful error message.
4495 : */
4496 0 : else if (strcmp(defel->defname, "input") == 0 ||
4497 0 : strcmp(defel->defname, "output") == 0 ||
4498 0 : strcmp(defel->defname, "internallength") == 0 ||
4499 0 : strcmp(defel->defname, "passedbyvalue") == 0 ||
4500 0 : strcmp(defel->defname, "alignment") == 0 ||
4501 0 : strcmp(defel->defname, "like") == 0 ||
4502 0 : strcmp(defel->defname, "category") == 0 ||
4503 0 : strcmp(defel->defname, "preferred") == 0 ||
4504 0 : strcmp(defel->defname, "default") == 0 ||
4505 0 : strcmp(defel->defname, "element") == 0 ||
4506 0 : strcmp(defel->defname, "delimiter") == 0 ||
4507 0 : strcmp(defel->defname, "collatable") == 0)
4508 0 : ereport(ERROR,
4509 : (errcode(ERRCODE_SYNTAX_ERROR),
4510 : errmsg("type attribute \"%s\" cannot be changed",
4511 : defel->defname)));
4512 : else
4513 0 : ereport(ERROR,
4514 : (errcode(ERRCODE_SYNTAX_ERROR),
4515 : errmsg("type attribute \"%s\" not recognized",
4516 : defel->defname)));
4517 : }
4518 :
4519 : /*
4520 : * Permissions check. Require superuser if we decided the command
4521 : * requires that, else must own the type.
4522 : */
4523 48 : if (requireSuper)
4524 : {
4525 42 : if (!superuser())
4526 0 : ereport(ERROR,
4527 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
4528 : errmsg("must be superuser to alter a type")));
4529 : }
4530 : else
4531 : {
4532 6 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
4533 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
4534 : }
4535 :
4536 : /*
4537 : * We disallow all forms of ALTER TYPE SET on types that aren't plain base
4538 : * types. It would for example be highly unsafe, not to mention
4539 : * pointless, to change the send/receive functions for a composite type.
4540 : * Moreover, pg_dump has no support for changing these properties on
4541 : * non-base types. We might weaken this someday, but not now.
4542 : *
4543 : * Note: if you weaken this enough to allow composite types, be sure to
4544 : * adjust the GenerateTypeDependencies call in AlterTypeRecurse.
4545 : */
4546 48 : if (typForm->typtype != TYPTYPE_BASE)
4547 0 : ereport(ERROR,
4548 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4549 : errmsg("%s is not a base type",
4550 : format_type_be(typeOid))));
4551 :
4552 : /*
4553 : * For the same reasons, don't allow direct alteration of array types.
4554 : */
4555 48 : if (IsTrueArrayType(typForm))
4556 0 : ereport(ERROR,
4557 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4558 : errmsg("%s is not a base type",
4559 : format_type_be(typeOid))));
4560 :
4561 : /* OK, recursively update this type and any arrays/domains over it */
4562 48 : AlterTypeRecurse(typeOid, false, tup, catalog, &atparams);
4563 :
4564 : /* Clean up */
4565 48 : ReleaseSysCache(tup);
4566 :
4567 48 : table_close(catalog, RowExclusiveLock);
4568 :
4569 48 : ObjectAddressSet(address, TypeRelationId, typeOid);
4570 :
4571 48 : return address;
4572 : }
4573 :
4574 : /*
4575 : * AlterTypeRecurse: one recursion step for AlterType()
4576 : *
4577 : * Apply the changes specified by "atparams" to the type identified by
4578 : * "typeOid", whose existing pg_type tuple is "tup". If necessary,
4579 : * recursively update its array type as well. Then search for any domains
4580 : * over this type, and recursively apply (most of) the same changes to those
4581 : * domains.
4582 : *
4583 : * We need this because the system generally assumes that a domain inherits
4584 : * many properties from its base type. See DefineDomain() above for details
4585 : * of what is inherited. Arrays inherit a smaller number of properties,
4586 : * but not none.
4587 : *
4588 : * There's a race condition here, in that some other transaction could
4589 : * concurrently add another domain atop this base type; we'd miss updating
4590 : * that one. Hence, be wary of allowing ALTER TYPE to change properties for
4591 : * which it'd be really fatal for a domain to be out of sync with its base
4592 : * type (typlen, for example). In practice, races seem unlikely to be an
4593 : * issue for plausible use-cases for ALTER TYPE. If one does happen, it could
4594 : * be fixed by re-doing the same ALTER TYPE once all prior transactions have
4595 : * committed.
4596 : */
4597 : static void
4598 66 : AlterTypeRecurse(Oid typeOid, bool isImplicitArray,
4599 : HeapTuple tup, Relation catalog,
4600 : AlterTypeRecurseParams *atparams)
4601 : {
4602 : Datum values[Natts_pg_type];
4603 : bool nulls[Natts_pg_type];
4604 : bool replaces[Natts_pg_type];
4605 : HeapTuple newtup;
4606 : SysScanDesc scan;
4607 : ScanKeyData key[1];
4608 : HeapTuple domainTup;
4609 :
4610 : /* Since this function recurses, it could be driven to stack overflow */
4611 66 : check_stack_depth();
4612 :
4613 : /* Update the current type's tuple */
4614 66 : memset(values, 0, sizeof(values));
4615 66 : memset(nulls, 0, sizeof(nulls));
4616 66 : memset(replaces, 0, sizeof(replaces));
4617 :
4618 66 : if (atparams->updateStorage)
4619 : {
4620 12 : replaces[Anum_pg_type_typstorage - 1] = true;
4621 12 : values[Anum_pg_type_typstorage - 1] = CharGetDatum(atparams->storage);
4622 : }
4623 66 : if (atparams->updateReceive)
4624 : {
4625 28 : replaces[Anum_pg_type_typreceive - 1] = true;
4626 28 : values[Anum_pg_type_typreceive - 1] = ObjectIdGetDatum(atparams->receiveOid);
4627 : }
4628 66 : if (atparams->updateSend)
4629 : {
4630 34 : replaces[Anum_pg_type_typsend - 1] = true;
4631 34 : values[Anum_pg_type_typsend - 1] = ObjectIdGetDatum(atparams->sendOid);
4632 : }
4633 66 : if (atparams->updateTypmodin)
4634 : {
4635 12 : replaces[Anum_pg_type_typmodin - 1] = true;
4636 12 : values[Anum_pg_type_typmodin - 1] = ObjectIdGetDatum(atparams->typmodinOid);
4637 : }
4638 66 : if (atparams->updateTypmodout)
4639 : {
4640 12 : replaces[Anum_pg_type_typmodout - 1] = true;
4641 12 : values[Anum_pg_type_typmodout - 1] = ObjectIdGetDatum(atparams->typmodoutOid);
4642 : }
4643 66 : if (atparams->updateAnalyze)
4644 : {
4645 12 : replaces[Anum_pg_type_typanalyze - 1] = true;
4646 12 : values[Anum_pg_type_typanalyze - 1] = ObjectIdGetDatum(atparams->analyzeOid);
4647 : }
4648 66 : if (atparams->updateSubscript)
4649 : {
4650 20 : replaces[Anum_pg_type_typsubscript - 1] = true;
4651 20 : values[Anum_pg_type_typsubscript - 1] = ObjectIdGetDatum(atparams->subscriptOid);
4652 : }
4653 :
4654 66 : newtup = heap_modify_tuple(tup, RelationGetDescr(catalog),
4655 : values, nulls, replaces);
4656 :
4657 66 : CatalogTupleUpdate(catalog, &newtup->t_self, newtup);
4658 :
4659 : /* Rebuild dependencies for this type */
4660 66 : GenerateTypeDependencies(newtup,
4661 : catalog,
4662 : NULL, /* don't have defaultExpr handy */
4663 : NULL, /* don't have typacl handy */
4664 : 0, /* we rejected composite types above */
4665 : isImplicitArray, /* it might be an array */
4666 : isImplicitArray, /* dependent iff it's array */
4667 : false, /* don't touch extension membership */
4668 : true);
4669 :
4670 66 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4671 :
4672 : /*
4673 : * Arrays inherit their base type's typmodin and typmodout, but none of
4674 : * the other properties we're concerned with here. Recurse to the array
4675 : * type if needed.
4676 : */
4677 66 : if (!isImplicitArray &&
4678 60 : (atparams->updateTypmodin || atparams->updateTypmodout))
4679 : {
4680 6 : Oid arrtypoid = ((Form_pg_type) GETSTRUCT(newtup))->typarray;
4681 :
4682 6 : if (OidIsValid(arrtypoid))
4683 : {
4684 : HeapTuple arrtup;
4685 : AlterTypeRecurseParams arrparams;
4686 :
4687 6 : arrtup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(arrtypoid));
4688 6 : if (!HeapTupleIsValid(arrtup))
4689 0 : elog(ERROR, "cache lookup failed for type %u", arrtypoid);
4690 :
4691 6 : memset(&arrparams, 0, sizeof(arrparams));
4692 6 : arrparams.updateTypmodin = atparams->updateTypmodin;
4693 6 : arrparams.updateTypmodout = atparams->updateTypmodout;
4694 6 : arrparams.typmodinOid = atparams->typmodinOid;
4695 6 : arrparams.typmodoutOid = atparams->typmodoutOid;
4696 :
4697 6 : AlterTypeRecurse(arrtypoid, true, arrtup, catalog, &arrparams);
4698 :
4699 6 : ReleaseSysCache(arrtup);
4700 : }
4701 : }
4702 :
4703 : /*
4704 : * Now we need to recurse to domains. However, some properties are not
4705 : * inherited by domains, so clear the update flags for those.
4706 : */
4707 66 : atparams->updateReceive = false; /* domains use F_DOMAIN_RECV */
4708 66 : atparams->updateTypmodin = false; /* domains don't have typmods */
4709 66 : atparams->updateTypmodout = false;
4710 66 : atparams->updateSubscript = false; /* domains don't have subscriptors */
4711 :
4712 : /* Skip the scan if nothing remains to be done */
4713 66 : if (!(atparams->updateStorage ||
4714 54 : atparams->updateSend ||
4715 20 : atparams->updateAnalyze))
4716 20 : return;
4717 :
4718 : /* Search pg_type for possible domains over this type */
4719 46 : ScanKeyInit(&key[0],
4720 : Anum_pg_type_typbasetype,
4721 : BTEqualStrategyNumber, F_OIDEQ,
4722 : ObjectIdGetDatum(typeOid));
4723 :
4724 46 : scan = systable_beginscan(catalog, InvalidOid, false,
4725 : NULL, 1, key);
4726 :
4727 58 : while ((domainTup = systable_getnext(scan)) != NULL)
4728 : {
4729 12 : Form_pg_type domainForm = (Form_pg_type) GETSTRUCT(domainTup);
4730 :
4731 : /*
4732 : * Shouldn't have a nonzero typbasetype in a non-domain, but let's
4733 : * check
4734 : */
4735 12 : if (domainForm->typtype != TYPTYPE_DOMAIN)
4736 0 : continue;
4737 :
4738 12 : AlterTypeRecurse(domainForm->oid, false, domainTup, catalog, atparams);
4739 : }
4740 :
4741 46 : systable_endscan(scan);
4742 : }
|
