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
154 199 : DefineType(ParseState *pstate, List *names, List *parameters)
155 : {
156 : char *typeName;
157 : Oid typeNamespace;
158 199 : int16 internalLength = -1; /* default: variable-length */
159 199 : List *inputName = NIL;
160 199 : List *outputName = NIL;
161 199 : List *receiveName = NIL;
162 199 : List *sendName = NIL;
163 199 : List *typmodinName = NIL;
164 199 : List *typmodoutName = NIL;
165 199 : List *analyzeName = NIL;
166 199 : List *subscriptName = NIL;
167 199 : char category = TYPCATEGORY_USER;
168 199 : bool preferred = false;
169 199 : char delimiter = DEFAULT_TYPDELIM;
170 199 : Oid elemType = InvalidOid;
171 199 : char *defaultValue = NULL;
172 199 : bool byValue = false;
173 199 : char alignment = TYPALIGN_INT; /* default alignment */
174 199 : char storage = TYPSTORAGE_PLAIN; /* default TOAST storage method */
175 199 : Oid collation = InvalidOid;
176 199 : DefElem *likeTypeEl = NULL;
177 199 : DefElem *internalLengthEl = NULL;
178 199 : DefElem *inputNameEl = NULL;
179 199 : DefElem *outputNameEl = NULL;
180 199 : DefElem *receiveNameEl = NULL;
181 199 : DefElem *sendNameEl = NULL;
182 199 : DefElem *typmodinNameEl = NULL;
183 199 : DefElem *typmodoutNameEl = NULL;
184 199 : DefElem *analyzeNameEl = NULL;
185 199 : DefElem *subscriptNameEl = NULL;
186 199 : DefElem *categoryEl = NULL;
187 199 : DefElem *preferredEl = NULL;
188 199 : DefElem *delimiterEl = NULL;
189 199 : DefElem *elemTypeEl = NULL;
190 199 : DefElem *defaultValueEl = NULL;
191 199 : DefElem *byValueEl = NULL;
192 199 : DefElem *alignmentEl = NULL;
193 199 : DefElem *storageEl = NULL;
194 199 : DefElem *collatableEl = NULL;
195 : Oid inputOid;
196 : Oid outputOid;
197 199 : Oid receiveOid = InvalidOid;
198 199 : Oid sendOid = InvalidOid;
199 199 : Oid typmodinOid = InvalidOid;
200 199 : Oid typmodoutOid = InvalidOid;
201 199 : Oid analyzeOid = InvalidOid;
202 199 : 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 : */
220 199 : 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 */
226 199 : 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 : */
240 199 : 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 : */
248 199 : if (OidIsValid(typoid) && get_typisdefined(typoid))
249 : {
250 3 : if (moveArrayTypeName(typoid, typeName, typeNamespace))
251 0 : typoid = InvalidOid;
252 : else
253 3 : 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 : */
262 196 : if (parameters == NIL)
263 : {
264 75 : if (OidIsValid(typoid))
265 3 : ereport(ERROR,
266 : (errcode(ERRCODE_DUPLICATE_OBJECT),
267 : errmsg("type \"%s\" already exists", typeName)));
268 :
269 72 : address = TypeShellMake(typeName, typeNamespace, GetUserId());
270 72 : 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 : */
277 121 : if (!OidIsValid(typoid))
278 3 : 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 */
284 595 : foreach(pl, parameters)
285 : {
286 477 : DefElem *defel = (DefElem *) lfirst(pl);
287 : DefElem **defelp;
288 :
289 477 : if (strcmp(defel->defname, "like") == 0)
290 29 : defelp = &likeTypeEl;
291 448 : else if (strcmp(defel->defname, "internallength") == 0)
292 78 : defelp = &internalLengthEl;
293 370 : else if (strcmp(defel->defname, "input") == 0)
294 115 : defelp = &inputNameEl;
295 255 : else if (strcmp(defel->defname, "output") == 0)
296 115 : defelp = &outputNameEl;
297 140 : else if (strcmp(defel->defname, "receive") == 0)
298 9 : defelp = &receiveNameEl;
299 131 : else if (strcmp(defel->defname, "send") == 0)
300 9 : defelp = &sendNameEl;
301 122 : else if (strcmp(defel->defname, "typmod_in") == 0)
302 4 : defelp = &typmodinNameEl;
303 118 : else if (strcmp(defel->defname, "typmod_out") == 0)
304 4 : defelp = &typmodoutNameEl;
305 114 : else if (strcmp(defel->defname, "analyze") == 0 ||
306 114 : strcmp(defel->defname, "analyse") == 0)
307 0 : defelp = &analyzeNameEl;
308 114 : else if (strcmp(defel->defname, "subscript") == 0)
309 1 : defelp = &subscriptNameEl;
310 113 : else if (strcmp(defel->defname, "category") == 0)
311 6 : defelp = &categoryEl;
312 107 : else if (strcmp(defel->defname, "preferred") == 0)
313 6 : defelp = &preferredEl;
314 101 : else if (strcmp(defel->defname, "delimiter") == 0)
315 0 : defelp = &delimiterEl;
316 101 : else if (strcmp(defel->defname, "element") == 0)
317 7 : defelp = &elemTypeEl;
318 94 : else if (strcmp(defel->defname, "default") == 0)
319 9 : defelp = &defaultValueEl;
320 85 : else if (strcmp(defel->defname, "passedbyvalue") == 0)
321 7 : defelp = &byValueEl;
322 78 : else if (strcmp(defel->defname, "alignment") == 0)
323 28 : defelp = &alignmentEl;
324 50 : else if (strcmp(defel->defname, "storage") == 0)
325 30 : defelp = &storageEl;
326 20 : else if (strcmp(defel->defname, "collatable") == 0)
327 2 : defelp = &collatableEl;
328 : else
329 : {
330 : /* WARNING, not ERROR, for historical backwards-compatibility */
331 18 : ereport(WARNING,
332 : (errcode(ERRCODE_SYNTAX_ERROR),
333 : errmsg("type attribute \"%s\" not recognized",
334 : defel->defname),
335 : parser_errposition(pstate, defel->location)));
336 18 : continue;
337 : }
338 459 : if (*defelp != NULL)
339 0 : errorConflictingDefElem(defel, pstate);
340 459 : *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 : */
348 118 : if (likeTypeEl)
349 : {
350 : Type likeType;
351 : Form_pg_type likeForm;
352 :
353 29 : likeType = typenameType(pstate, defGetTypeName(likeTypeEl), NULL);
354 26 : likeForm = (Form_pg_type) GETSTRUCT(likeType);
355 26 : internalLength = likeForm->typlen;
356 26 : byValue = likeForm->typbyval;
357 26 : alignment = likeForm->typalign;
358 26 : storage = likeForm->typstorage;
359 26 : ReleaseSysCache(likeType);
360 : }
361 115 : if (internalLengthEl)
362 78 : internalLength = defGetTypeLength(internalLengthEl);
363 115 : if (inputNameEl)
364 112 : inputName = defGetQualifiedName(inputNameEl);
365 115 : if (outputNameEl)
366 112 : outputName = defGetQualifiedName(outputNameEl);
367 115 : if (receiveNameEl)
368 9 : receiveName = defGetQualifiedName(receiveNameEl);
369 115 : if (sendNameEl)
370 9 : sendName = defGetQualifiedName(sendNameEl);
371 115 : if (typmodinNameEl)
372 4 : typmodinName = defGetQualifiedName(typmodinNameEl);
373 115 : if (typmodoutNameEl)
374 4 : typmodoutName = defGetQualifiedName(typmodoutNameEl);
375 115 : if (analyzeNameEl)
376 0 : analyzeName = defGetQualifiedName(analyzeNameEl);
377 115 : if (subscriptNameEl)
378 1 : subscriptName = defGetQualifiedName(subscriptNameEl);
379 115 : if (categoryEl)
380 : {
381 6 : char *p = defGetString(categoryEl);
382 :
383 6 : category = p[0];
384 : /* restrict to non-control ASCII */
385 6 : 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 : }
391 115 : if (preferredEl)
392 6 : preferred = defGetBoolean(preferredEl);
393 115 : if (delimiterEl)
394 : {
395 0 : char *p = defGetString(delimiterEl);
396 :
397 0 : delimiter = p[0];
398 : /* XXX shouldn't we restrict the delimiter? */
399 : }
400 115 : if (elemTypeEl)
401 : {
402 7 : elemType = typenameTypeId(NULL, defGetTypeName(elemTypeEl));
403 : /* disallow arrays of pseudotypes */
404 7 : 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 : }
410 115 : if (defaultValueEl)
411 9 : defaultValue = defGetString(defaultValueEl);
412 115 : if (byValueEl)
413 7 : byValue = defGetBoolean(byValueEl);
414 115 : if (alignmentEl)
415 : {
416 28 : 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 47 : if (pg_strcasecmp(a, "double") == 0 ||
424 38 : pg_strcasecmp(a, "float8") == 0 ||
425 19 : pg_strcasecmp(a, "pg_catalog.float8") == 0)
426 9 : alignment = TYPALIGN_DOUBLE;
427 22 : else if (pg_strcasecmp(a, "int4") == 0 ||
428 3 : pg_strcasecmp(a, "pg_catalog.int4") == 0)
429 19 : 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 : }
441 115 : if (storageEl)
442 : {
443 30 : char *a = defGetString(storageEl);
444 :
445 30 : if (pg_strcasecmp(a, "plain") == 0)
446 9 : storage = TYPSTORAGE_PLAIN;
447 21 : else if (pg_strcasecmp(a, "external") == 0)
448 0 : storage = TYPSTORAGE_EXTERNAL;
449 21 : else if (pg_strcasecmp(a, "extended") == 0)
450 18 : storage = TYPSTORAGE_EXTENDED;
451 3 : else if (pg_strcasecmp(a, "main") == 0)
452 3 : storage = TYPSTORAGE_MAIN;
453 : else
454 0 : ereport(ERROR,
455 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
456 : errmsg("storage \"%s\" not recognized", a)));
457 : }
458 115 : if (collatableEl)
459 2 : collation = defGetBoolean(collatableEl) ? DEFAULT_COLLATION_OID : InvalidOid;
460 :
461 : /*
462 : * make sure we have our required definitions
463 : */
464 115 : if (inputName == NIL)
465 3 : ereport(ERROR,
466 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
467 : errmsg("type input function must be specified")));
468 112 : if (outputName == NIL)
469 0 : ereport(ERROR,
470 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
471 : errmsg("type output function must be specified")));
472 :
473 112 : 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 : */
481 112 : inputOid = findTypeInputFunction(inputName, typoid);
482 109 : outputOid = findTypeOutputFunction(outputName, typoid);
483 109 : if (receiveName)
484 9 : receiveOid = findTypeReceiveFunction(receiveName, typoid);
485 109 : if (sendName)
486 9 : sendOid = findTypeSendFunction(sendName, typoid);
487 :
488 : /*
489 : * Convert typmodin/out function proc names to OIDs.
490 : */
491 109 : if (typmodinName)
492 4 : typmodinOid = findTypeTypmodinFunction(typmodinName);
493 109 : if (typmodoutName)
494 4 : 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 : */
500 109 : 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 : */
509 109 : if (subscriptName)
510 1 : subscriptOid = findTypeSubscriptingFunction(subscriptName, typoid);
511 108 : else if (OidIsValid(elemType))
512 : {
513 3 : if (internalLength > 0 && !byValue && get_typlen(elemType) > 0)
514 3 : 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 : */
565 109 : 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 =
575 109 : 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 : */
612 109 : array_type = makeArrayTypeName(typeName, typeNamespace);
613 :
614 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for arrays */
615 109 : alignment = (alignment == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
616 :
617 109 : 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 :
650 109 : pfree(array_type);
651 :
652 109 : return address;
653 : }
654 :
655 : /*
656 : * Guts of type deletion.
657 : */
658 : void
659 41665 : RemoveTypeById(Oid typeOid)
660 : {
661 : Relation relation;
662 : HeapTuple tup;
663 :
664 41665 : relation = table_open(TypeRelationId, RowExclusiveLock);
665 :
666 41665 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typeOid));
667 41665 : if (!HeapTupleIsValid(tup))
668 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
669 :
670 41665 : 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 41665 : if (((Form_pg_type) GETSTRUCT(tup))->typtype == TYPTYPE_ENUM)
678 162 : 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 41665 : if (((Form_pg_type) GETSTRUCT(tup))->typtype == TYPTYPE_RANGE)
686 52 : RangeDelete(typeOid);
687 :
688 41665 : ReleaseSysCache(tup);
689 :
690 41665 : table_close(relation, RowExclusiveLock);
691 41665 : }
692 :
693 :
694 : /*
695 : * DefineDomain
696 : * Registers a new domain.
697 : */
698 : ObjectAddress
699 743 : 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;
719 743 : char *defaultValue = NULL;
720 743 : char *defaultValueBin = NULL;
721 743 : bool saw_default = false;
722 743 : bool typNotNull = false;
723 743 : bool nullDefined = false;
724 743 : int32 typNDims = list_length(stmt->typeName->arrayBounds);
725 : HeapTuple typeTup;
726 743 : 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 */
738 743 : domainNamespace = QualifiedNameGetCreationNamespace(stmt->domainname,
739 : &domainName);
740 :
741 : /* Check we have creation rights in target namespace */
742 743 : aclresult = object_aclcheck(NamespaceRelationId, domainNamespace, GetUserId(),
743 : ACL_CREATE);
744 743 : 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 : */
752 743 : old_type_oid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
753 : CStringGetDatum(domainName),
754 : ObjectIdGetDatum(domainNamespace));
755 743 : 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 : */
766 743 : typeTup = typenameType(pstate, stmt->typeName, &basetypeMod);
767 740 : baseType = (Form_pg_type) GETSTRUCT(typeTup);
768 740 : 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 : */
778 740 : typtype = baseType->typtype;
779 740 : if (typtype != TYPTYPE_BASE &&
780 41 : typtype != TYPTYPE_COMPOSITE &&
781 16 : typtype != TYPTYPE_DOMAIN &&
782 9 : typtype != TYPTYPE_ENUM &&
783 6 : typtype != TYPTYPE_RANGE &&
784 : typtype != TYPTYPE_MULTIRANGE)
785 3 : 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 :
791 737 : aclresult = object_aclcheck(TypeRelationId, basetypeoid, GetUserId(), ACL_USAGE);
792 737 : if (aclresult != ACLCHECK_OK)
793 3 : 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 : */
804 734 : baseColl = baseType->typcollation;
805 734 : if (stmt->collClause)
806 123 : domaincoll = get_collation_oid(stmt->collClause->collname, false);
807 : else
808 611 : domaincoll = baseColl;
809 :
810 : /* Complain if COLLATE is applied to an uncollatable type */
811 734 : if (OidIsValid(domaincoll) && !OidIsValid(baseColl))
812 9 : 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 */
819 725 : byValue = baseType->typbyval;
820 :
821 : /* Required Alignment */
822 725 : alignment = baseType->typalign;
823 :
824 : /* TOAST Strategy */
825 725 : storage = baseType->typstorage;
826 :
827 : /* Storage Length */
828 725 : internalLength = baseType->typlen;
829 :
830 : /* Type Category */
831 725 : category = baseType->typcategory;
832 :
833 : /* Array element Delimiter */
834 725 : delimiter = baseType->typdelim;
835 :
836 : /* I/O Functions */
837 725 : inputProcedure = F_DOMAIN_IN;
838 725 : outputProcedure = baseType->typoutput;
839 725 : receiveProcedure = F_DOMAIN_RECV;
840 725 : sendProcedure = baseType->typsend;
841 :
842 : /* Domains never accept typmods, so no typmodin/typmodout needed */
843 :
844 : /* Analysis function */
845 725 : 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 */
854 725 : datum = SysCacheGetAttr(TYPEOID, typeTup,
855 : Anum_pg_type_typdefault, &isnull);
856 725 : if (!isnull)
857 0 : defaultValue = TextDatumGetCString(datum);
858 :
859 : /* Inherited default binary value */
860 725 : datum = SysCacheGetAttr(TYPEOID, typeTup,
861 : Anum_pg_type_typdefaultbin, &isnull);
862 725 : 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 1155 : foreach(listptr, schema)
870 : {
871 469 : Constraint *constr = lfirst(listptr);
872 :
873 469 : if (!IsA(constr, Constraint))
874 0 : elog(ERROR, "unrecognized node type: %d",
875 : (int) nodeTag(constr));
876 469 : switch (constr->contype)
877 : {
878 91 : 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 91 : if (saw_default)
885 3 : ereport(ERROR,
886 : errcode(ERRCODE_SYNTAX_ERROR),
887 : errmsg("multiple default expressions"),
888 : parser_errposition(pstate, constr->location));
889 88 : saw_default = true;
890 :
891 88 : 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 88 : 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 85 : if (defaultExpr == NULL ||
916 85 : (IsA(defaultExpr, Const) &&
917 18 : ((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 85 : deparse_expression(defaultExpr,
931 : NIL, false, false);
932 85 : 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 85 : break;
942 :
943 59 : case CONSTR_NOTNULL:
944 59 : if (nullDefined)
945 : {
946 3 : 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 3 : ereport(ERROR,
953 : errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
954 : errmsg("redundant NOT NULL constraint definition"),
955 : parser_errposition(pstate, constr->location));
956 : }
957 56 : if (constr->is_no_inherit)
958 3 : 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 53 : typNotNull = true;
963 53 : nullDefined = true;
964 53 : break;
965 :
966 3 : case CONSTR_NULL:
967 3 : if (nullDefined && typNotNull)
968 3 : 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 :
976 295 : 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 : */
984 295 : if (constr->is_no_inherit)
985 3 : 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 :
990 292 : break;
991 :
992 : /*
993 : * All else are error cases
994 : */
995 3 : case CONSTR_UNIQUE:
996 3 : 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 3 : case CONSTR_PRIMARY:
1003 3 : 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 3 : case CONSTR_FOREIGN:
1017 3 : 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 3 : case CONSTR_ATTR_DEFERRABLE:
1024 : case CONSTR_ATTR_NOT_DEFERRABLE:
1025 : case CONSTR_ATTR_DEFERRED:
1026 : case CONSTR_ATTR_IMMEDIATE:
1027 3 : 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 3 : case CONSTR_GENERATED:
1034 : case CONSTR_IDENTITY:
1035 3 : 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 6 : case CONSTR_ATTR_ENFORCED:
1042 : case CONSTR_ATTR_NOT_ENFORCED:
1043 6 : 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 686 : domainArrayOid = AssignTypeArrayOid();
1055 :
1056 : /*
1057 : * Have TypeCreate do all the real work.
1058 : */
1059 : address =
1060 686 : 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 686 : domainArrayName = makeArrayTypeName(domainName, domainNamespace);
1097 :
1098 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for arrays */
1099 686 : alignment = (alignment == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
1100 :
1101 686 : 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 686 : pfree(domainArrayName);
1135 :
1136 : /*
1137 : * Process constraints which refer to the domain ID returned by TypeCreate
1138 : */
1139 1095 : foreach(listptr, schema)
1140 : {
1141 409 : Constraint *constr = lfirst(listptr);
1142 :
1143 : /* it must be a Constraint, per check above */
1144 :
1145 409 : switch (constr->contype)
1146 : {
1147 283 : case CONSTR_CHECK:
1148 283 : domainAddCheckConstraint(address.objectId, domainNamespace,
1149 : basetypeoid, basetypeMod,
1150 : constr, domainName, NULL);
1151 283 : break;
1152 :
1153 44 : case CONSTR_NOTNULL:
1154 44 : domainAddNotNullConstraint(address.objectId, domainNamespace,
1155 : basetypeoid, basetypeMod,
1156 : constr, domainName, NULL);
1157 44 : break;
1158 :
1159 : /* Other constraint types were fully processed above */
1160 :
1161 82 : default:
1162 82 : break;
1163 : }
1164 :
1165 : /* CCI so we can detect duplicate constraint names */
1166 409 : CommandCounterIncrement();
1167 : }
1168 :
1169 : /*
1170 : * Now we can clean up.
1171 : */
1172 686 : ReleaseSysCache(typeTup);
1173 :
1174 686 : return address;
1175 : }
1176 :
1177 :
1178 : /*
1179 : * DefineEnum
1180 : * Registers a new enum.
1181 : */
1182 : ObjectAddress
1183 222 : 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 222 : enumNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
1195 : &enumName);
1196 :
1197 : /* Check we have creation rights in target namespace */
1198 222 : aclresult = object_aclcheck(NamespaceRelationId, enumNamespace, GetUserId(), ACL_CREATE);
1199 222 : 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 222 : old_type_oid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
1208 : CStringGetDatum(enumName),
1209 : ObjectIdGetDatum(enumNamespace));
1210 222 : if (OidIsValid(old_type_oid))
1211 : {
1212 4 : 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 222 : enumArrayOid = AssignTypeArrayOid();
1220 :
1221 : /* Create the pg_type entry */
1222 : enumTypeAddr =
1223 222 : 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 221 : EnumValuesCreate(enumTypeAddr.objectId, stmt->vals);
1258 :
1259 : /*
1260 : * Create the array type that goes with it.
1261 : */
1262 218 : enumArrayName = makeArrayTypeName(enumName, enumNamespace);
1263 :
1264 218 : 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 218 : pfree(enumArrayName);
1298 :
1299 218 : return enumTypeAddr;
1300 : }
1301 :
1302 : /*
1303 : * AlterEnum
1304 : * Adds a new label to an existing enum.
1305 : */
1306 : ObjectAddress
1307 198 : 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 198 : typename = makeTypeNameFromNameList(stmt->typeName);
1316 198 : enum_type_oid = typenameTypeId(NULL, typename);
1317 :
1318 198 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(enum_type_oid));
1319 198 : 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 198 : checkEnumOwner(tup);
1324 :
1325 198 : ReleaseSysCache(tup);
1326 :
1327 198 : if (stmt->oldVal)
1328 : {
1329 : /* Rename an existing label */
1330 12 : RenameEnumLabel(enum_type_oid, stmt->oldVal, stmt->newVal);
1331 : }
1332 : else
1333 : {
1334 : /* Add a new label */
1335 186 : AddEnumLabel(enum_type_oid, stmt->newVal,
1336 186 : stmt->newValNeighbor, stmt->newValIsAfter,
1337 186 : stmt->skipIfNewValExists);
1338 : }
1339 :
1340 183 : InvokeObjectPostAlterHook(TypeRelationId, enum_type_oid, 0);
1341 :
1342 183 : ObjectAddressSet(address, TypeRelationId, enum_type_oid);
1343 :
1344 183 : 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 198 : checkEnumOwner(HeapTuple tup)
1356 : {
1357 198 : Form_pg_type typTup = (Form_pg_type) GETSTRUCT(tup);
1358 :
1359 : /* Check that this is actually an enum */
1360 198 : 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 198 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
1368 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
1369 198 : }
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 92 : DefineRange(ParseState *pstate, CreateRangeStmt *stmt)
1383 : {
1384 : char *typeName;
1385 : Oid typeNamespace;
1386 : Oid typoid;
1387 : char *rangeArrayName;
1388 92 : char *multirangeTypeName = NULL;
1389 : char *multirangeArrayName;
1390 92 : Oid multirangeNamespace = InvalidOid;
1391 : Oid rangeArrayOid;
1392 : Oid multirangeOid;
1393 : Oid multirangeArrayOid;
1394 92 : Oid rangeSubtype = InvalidOid;
1395 92 : List *rangeSubOpclassName = NIL;
1396 92 : List *rangeCollationName = NIL;
1397 92 : List *rangeCanonicalName = NIL;
1398 92 : 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 92 : Oid rangeConstruct2Oid = InvalidOid;
1412 92 : Oid rangeConstruct3Oid = InvalidOid;
1413 92 : Oid mltrngConstruct0Oid = InvalidOid;
1414 92 : Oid mltrngConstruct1Oid = InvalidOid;
1415 92 : Oid mltrngConstruct2Oid = InvalidOid;
1416 : Oid castFuncOid;
1417 :
1418 : /* Convert list of names to a name and namespace */
1419 92 : typeNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
1420 : &typeName);
1421 :
1422 : /* Check we have creation rights in target namespace */
1423 92 : aclresult = object_aclcheck(NamespaceRelationId, typeNamespace, GetUserId(), ACL_CREATE);
1424 92 : 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 92 : 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 92 : 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 248 : foreach(lc, stmt->params)
1456 : {
1457 156 : DefElem *defel = (DefElem *) lfirst(lc);
1458 :
1459 156 : if (strcmp(defel->defname, "subtype") == 0)
1460 : {
1461 92 : if (OidIsValid(rangeSubtype))
1462 0 : errorConflictingDefElem(defel, pstate);
1463 : /* we can look up the subtype name immediately */
1464 92 : rangeSubtype = typenameTypeId(NULL, defGetTypeName(defel));
1465 : }
1466 64 : else if (strcmp(defel->defname, "subtype_opclass") == 0)
1467 : {
1468 4 : if (rangeSubOpclassName != NIL)
1469 0 : errorConflictingDefElem(defel, pstate);
1470 4 : rangeSubOpclassName = defGetQualifiedName(defel);
1471 : }
1472 60 : else if (strcmp(defel->defname, "collation") == 0)
1473 : {
1474 35 : if (rangeCollationName != NIL)
1475 0 : errorConflictingDefElem(defel, pstate);
1476 35 : rangeCollationName = defGetQualifiedName(defel);
1477 : }
1478 25 : 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 25 : else if (strcmp(defel->defname, "subtype_diff") == 0)
1485 : {
1486 7 : if (rangeSubtypeDiffName != NIL)
1487 0 : errorConflictingDefElem(defel, pstate);
1488 7 : rangeSubtypeDiffName = defGetQualifiedName(defel);
1489 : }
1490 18 : else if (strcmp(defel->defname, "multirange_type_name") == 0)
1491 : {
1492 18 : if (multirangeTypeName != NULL)
1493 0 : errorConflictingDefElem(defel, pstate);
1494 : /* we can look up the subtype name immediately */
1495 18 : 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 92 : 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 92 : 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 92 : rangeSubOpclass = findRangeSubOpclass(rangeSubOpclassName, rangeSubtype);
1519 :
1520 : /* Identify collation to use, if any */
1521 92 : if (type_is_collatable(rangeSubtype))
1522 : {
1523 39 : if (rangeCollationName != NIL)
1524 35 : rangeCollation = get_collation_oid(rangeCollationName, false);
1525 : else
1526 4 : rangeCollation = get_typcollation(rangeSubtype);
1527 : }
1528 : else
1529 : {
1530 53 : 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 53 : rangeCollation = InvalidOid;
1535 : }
1536 :
1537 : /* Identify support functions, if provided */
1538 92 : 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 92 : rangeCanonical = InvalidOid;
1550 :
1551 92 : if (rangeSubtypeDiffName != NIL)
1552 7 : rangeSubtypeDiff = findRangeSubtypeDiffFunction(rangeSubtypeDiffName,
1553 : rangeSubtype);
1554 : else
1555 85 : rangeSubtypeDiff = InvalidOid;
1556 :
1557 89 : get_typlenbyvalalign(rangeSubtype,
1558 : &subtyplen, &subtypbyval, &subtypalign);
1559 :
1560 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for ranges */
1561 89 : alignment = (subtypalign == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
1562 :
1563 : /* Allocate OID for array type, its multirange, and its multirange array */
1564 89 : rangeArrayOid = AssignTypeArrayOid();
1565 89 : multirangeOid = AssignTypeMultirangeOid();
1566 89 : multirangeArrayOid = AssignTypeMultirangeArrayOid();
1567 :
1568 : /* Create the pg_type entry */
1569 : address =
1570 89 : 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 89 : typoid = address.objectId;
1604 :
1605 : /* Create the multirange that goes with it */
1606 89 : if (multirangeTypeName)
1607 : {
1608 : Oid old_typoid;
1609 :
1610 : /*
1611 : * Look to see if multirange type already exists.
1612 : */
1613 18 : 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 18 : if (OidIsValid(old_typoid) && get_typisdefined(old_typoid))
1622 : {
1623 6 : if (!moveArrayTypeName(old_typoid, multirangeTypeName, multirangeNamespace))
1624 3 : 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 71 : multirangeNamespace = typeNamespace;
1633 71 : multirangeTypeName = makeMultirangeTypeName(typeName, multirangeNamespace);
1634 : }
1635 :
1636 : mltrngaddress =
1637 80 : 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 80 : rangeArrayName = makeArrayTypeName(typeName, typeNamespace);
1675 :
1676 80 : 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 80 : pfree(rangeArrayName);
1710 :
1711 : /* Create the multirange's array type */
1712 :
1713 80 : multirangeArrayName = makeArrayTypeName(multirangeTypeName, typeNamespace);
1714 :
1715 80 : 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 80 : CommandCounterIncrement();
1750 :
1751 : /* And create the constructor functions for this range type */
1752 80 : makeRangeConstructors(typeName, typeNamespace, typoid, rangeSubtype,
1753 : &rangeConstruct2Oid, &rangeConstruct3Oid);
1754 80 : makeMultirangeConstructors(multirangeTypeName, typeNamespace,
1755 : multirangeOid, typoid, rangeArrayOid,
1756 : &mltrngConstruct0Oid, &mltrngConstruct1Oid, &mltrngConstruct2Oid);
1757 80 : castFuncOid = mltrngConstruct1Oid;
1758 :
1759 : /* Create the entry in pg_range */
1760 80 : 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 80 : CastCreate(typoid, multirangeOid, castFuncOid, InvalidOid, InvalidOid,
1767 : COERCION_CODE_EXPLICIT, COERCION_METHOD_FUNCTION,
1768 : DEPENDENCY_INTERNAL);
1769 :
1770 80 : pfree(multirangeArrayName);
1771 :
1772 80 : 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 80 : 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 80 : constructorArgTypes[0] = subtype;
1802 80 : constructorArgTypes[1] = subtype;
1803 80 : constructorArgTypes[2] = TEXTOID;
1804 :
1805 80 : referenced.classId = TypeRelationId;
1806 80 : referenced.objectId = rangeOid;
1807 80 : referenced.objectSubId = 0;
1808 :
1809 240 : for (i = 0; i < lengthof(prosrc); i++)
1810 : {
1811 : oidvector *constructorArgTypesVector;
1812 :
1813 160 : constructorArgTypesVector = buildoidvector(constructorArgTypes,
1814 160 : pronargs[i]);
1815 :
1816 160 : 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 160 : 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 160 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1851 :
1852 160 : if (pronargs[i] == 2)
1853 80 : *rangeConstruct2_p = myself.objectId;
1854 80 : else if (pronargs[i] == 3)
1855 80 : *rangeConstruct3_p = myself.objectId;
1856 : }
1857 80 : }
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 80 : 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 80 : referenced.classId = TypeRelationId;
1882 80 : referenced.objectId = multirangeOid;
1883 80 : referenced.objectSubId = 0;
1884 :
1885 : /* 0-arg constructor - for empty multiranges */
1886 80 : argtypes = buildoidvector(NULL, 0);
1887 80 : 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 80 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1922 80 : *mltrngConstruct0_p = myself.objectId;
1923 80 : 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 80 : argtypes = buildoidvector(&rangeOid, 1);
1933 80 : 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 80 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1963 80 : *mltrngConstruct1_p = myself.objectId;
1964 80 : pfree(argtypes);
1965 :
1966 : /* n-arg constructor - vararg */
1967 80 : argtypes = buildoidvector(&rangeArrayOid, 1);
1968 80 : allParamTypes = ObjectIdGetDatum(rangeArrayOid);
1969 80 : allParameterTypes = construct_array_builtin(&allParamTypes, 1, OIDOID);
1970 80 : paramModes = CharGetDatum(FUNC_PARAM_VARIADIC);
1971 80 : parameterModes = construct_array_builtin(¶mModes, 1, CHAROID);
1972 80 : 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 80 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
2002 80 : *mltrngConstruct2_p = myself.objectId;
2003 80 : pfree(argtypes);
2004 80 : pfree(allParameterTypes);
2005 80 : pfree(parameterModes);
2006 80 : }
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 112 : 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 112 : argList[0] = CSTRINGOID;
2028 112 : argList[1] = OIDOID;
2029 112 : argList[2] = INT4OID;
2030 :
2031 112 : procOid = LookupFuncName(procname, 1, argList, true);
2032 112 : procOid2 = LookupFuncName(procname, 3, argList, true);
2033 112 : if (OidIsValid(procOid))
2034 : {
2035 104 : 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 8 : procOid = procOid2;
2044 : /* If not found, reference the 1-argument signature in error msg */
2045 8 : 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 112 : if (get_func_rettype(procOid) != typeOid)
2054 3 : 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 109 : 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 109 : return procOid;
2076 : }
2077 :
2078 : static Oid
2079 109 : 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 109 : argList[0] = typeOid;
2089 :
2090 109 : procOid = LookupFuncName(procname, 1, argList, true);
2091 109 : 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 109 : 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 109 : 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 109 : return procOid;
2111 : }
2112 :
2113 : static Oid
2114 23 : 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 23 : argList[0] = INTERNALOID;
2126 23 : argList[1] = OIDOID;
2127 23 : argList[2] = INT4OID;
2128 :
2129 23 : procOid = LookupFuncName(procname, 1, argList, true);
2130 23 : procOid2 = LookupFuncName(procname, 3, argList, true);
2131 23 : if (OidIsValid(procOid))
2132 : {
2133 18 : 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 5 : procOid = procOid2;
2142 : /* If not found, reference the 1-argument signature in error msg */
2143 5 : 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 23 : 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 23 : 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 23 : return procOid;
2165 : }
2166 :
2167 : static Oid
2168 23 : 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 23 : argList[0] = typeOid;
2178 :
2179 23 : procOid = LookupFuncName(procname, 1, argList, true);
2180 23 : 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 23 : 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 23 : 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 23 : return procOid;
2200 : }
2201 :
2202 : static Oid
2203 7 : 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 7 : argList[0] = CSTRINGARRAYOID;
2212 :
2213 7 : procOid = LookupFuncName(procname, 1, argList, true);
2214 7 : 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 7 : 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 7 : 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 7 : return procOid;
2234 : }
2235 :
2236 : static Oid
2237 7 : 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 7 : argList[0] = INT4OID;
2246 :
2247 7 : procOid = LookupFuncName(procname, 1, argList, true);
2248 7 : 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 7 : 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 7 : 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 7 : return procOid;
2268 : }
2269 :
2270 : static Oid
2271 5 : 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 5 : argList[0] = INTERNALOID;
2280 :
2281 5 : procOid = LookupFuncName(procname, 1, argList, true);
2282 5 : 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 5 : 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 5 : return procOid;
2295 : }
2296 :
2297 : static Oid
2298 11 : 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 11 : argList[0] = INTERNALOID;
2309 :
2310 11 : procOid = LookupFuncName(procname, 1, argList, true);
2311 11 : 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 11 : 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 11 : 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 11 : 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 92 : findRangeSubOpclass(List *opcname, Oid subtype)
2346 : {
2347 : Oid opcid;
2348 : Oid opInputType;
2349 :
2350 92 : if (opcname != NIL)
2351 : {
2352 4 : 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 4 : opInputType = get_opclass_input_type(opcid);
2359 4 : 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 88 : opcid = GetDefaultOpClass(subtype, BTREE_AM_OID);
2369 88 : 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 92 : 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 7 : 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 7 : argList[0] = subtype;
2436 7 : argList[1] = subtype;
2437 :
2438 7 : procOid = LookupFuncName(procname, 2, argList, true);
2439 :
2440 7 : if (!OidIsValid(procOid))
2441 3 : ereport(ERROR,
2442 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2443 : errmsg("function %s does not exist",
2444 : func_signature_string(procname, 2, NIL, argList))));
2445 :
2446 4 : 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 4 : 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 4 : aclresult = object_aclcheck(ProcedureRelationId, procOid, GetUserId(), ACL_EXECUTE);
2461 4 : if (aclresult != ACLCHECK_OK)
2462 0 : aclcheck_error(aclresult, OBJECT_FUNCTION, get_func_name(procOid));
2463 :
2464 4 : 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 37432 : AssignTypeArrayOid(void)
2474 : {
2475 : Oid type_array_oid;
2476 :
2477 : /* Use binary-upgrade override for pg_type.typarray? */
2478 37432 : if (IsBinaryUpgrade)
2479 : {
2480 867 : 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 867 : type_array_oid = binary_upgrade_next_array_pg_type_oid;
2486 867 : binary_upgrade_next_array_pg_type_oid = InvalidOid;
2487 : }
2488 : else
2489 : {
2490 36565 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2491 :
2492 36565 : type_array_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2493 : Anum_pg_type_oid);
2494 36565 : table_close(pg_type, AccessShareLock);
2495 : }
2496 :
2497 37432 : 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 89 : AssignTypeMultirangeOid(void)
2507 : {
2508 : Oid type_multirange_oid;
2509 :
2510 : /* Use binary-upgrade override for pg_type.oid? */
2511 89 : if (IsBinaryUpgrade)
2512 : {
2513 6 : 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 6 : type_multirange_oid = binary_upgrade_next_mrng_pg_type_oid;
2519 6 : binary_upgrade_next_mrng_pg_type_oid = InvalidOid;
2520 : }
2521 : else
2522 : {
2523 83 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2524 :
2525 83 : type_multirange_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2526 : Anum_pg_type_oid);
2527 83 : table_close(pg_type, AccessShareLock);
2528 : }
2529 :
2530 89 : 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 89 : AssignTypeMultirangeArrayOid(void)
2540 : {
2541 : Oid type_multirange_array_oid;
2542 :
2543 : /* Use binary-upgrade override for pg_type.oid? */
2544 89 : if (IsBinaryUpgrade)
2545 : {
2546 6 : 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 6 : type_multirange_array_oid = binary_upgrade_next_mrng_array_pg_type_oid;
2552 6 : binary_upgrade_next_mrng_array_pg_type_oid = InvalidOid;
2553 : }
2554 : else
2555 : {
2556 83 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2557 :
2558 83 : type_multirange_array_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2559 : Anum_pg_type_oid);
2560 83 : table_close(pg_type, AccessShareLock);
2561 : }
2562 :
2563 89 : 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 2254 : DefineCompositeType(RangeVar *typevar, List *coldeflist)
2582 : {
2583 2254 : 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 2254 : createStmt->relation = typevar;
2593 2254 : createStmt->tableElts = coldeflist;
2594 2254 : createStmt->inhRelations = NIL;
2595 2254 : createStmt->constraints = NIL;
2596 2254 : createStmt->options = NIL;
2597 2254 : createStmt->oncommit = ONCOMMIT_NOOP;
2598 2254 : createStmt->tablespacename = NULL;
2599 2254 : 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 2254 : typeNamespace = RangeVarGetAndCheckCreationNamespace(createStmt->relation,
2608 : NoLock, NULL);
2609 2254 : RangeVarAdjustRelationPersistence(createStmt->relation, typeNamespace);
2610 : old_type_oid =
2611 2254 : GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
2612 : CStringGetDatum(createStmt->relation->relname),
2613 : ObjectIdGetDatum(typeNamespace));
2614 2254 : 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 2254 : DefineRelation(createStmt, RELKIND_COMPOSITE_TYPE, InvalidOid, &address,
2626 : NULL);
2627 :
2628 2248 : 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 7 : 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 7 : Node *defaultExpr = NULL; /* NULL if no default specified */
2648 7 : Datum new_record[Natts_pg_type] = {0};
2649 7 : bool new_record_nulls[Natts_pg_type] = {0};
2650 7 : 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 7 : typename = makeTypeNameFromNameList(names);
2657 7 : domainoid = typenameTypeId(NULL, typename);
2658 :
2659 : /* Look up the domain in the type table */
2660 7 : rel = table_open(TypeRelationId, RowExclusiveLock);
2661 :
2662 7 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2663 7 : if (!HeapTupleIsValid(tup))
2664 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2665 7 : typTup = (Form_pg_type) GETSTRUCT(tup);
2666 :
2667 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2668 7 : checkDomainOwner(tup);
2669 :
2670 : /* Setup new tuple */
2671 :
2672 : /* Store the new default into the tuple */
2673 7 : if (defaultRaw)
2674 : {
2675 : /* Create a dummy ParseState for transformExpr */
2676 4 : 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 4 : defaultExpr = cookDefault(pstate, defaultRaw,
2683 : typTup->typbasetype,
2684 : typTup->typtypmod,
2685 4 : 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 4 : if (defaultExpr == NULL ||
2694 4 : (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 4 : 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 4 : new_record[Anum_pg_type_typdefaultbin - 1] = CStringGetTextDatum(nodeToString(defaultExpr));
2717 :
2718 4 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2719 4 : new_record[Anum_pg_type_typdefault - 1] = CStringGetTextDatum(defaultValue);
2720 4 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2721 : }
2722 : }
2723 : else
2724 : {
2725 : /* ALTER ... DROP DEFAULT */
2726 3 : new_record_nulls[Anum_pg_type_typdefaultbin - 1] = true;
2727 3 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2728 3 : new_record_nulls[Anum_pg_type_typdefault - 1] = true;
2729 3 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2730 : }
2731 :
2732 7 : newtuple = heap_modify_tuple(tup, RelationGetDescr(rel),
2733 : new_record, new_record_nulls,
2734 : new_record_repl);
2735 :
2736 7 : CatalogTupleUpdate(rel, &tup->t_self, newtuple);
2737 :
2738 : /* Rebuild dependencies */
2739 7 : 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 7 : InvokeObjectPostAlterHook(TypeRelationId, domainoid, 0);
2750 :
2751 7 : ObjectAddressSet(address, TypeRelationId, domainoid);
2752 :
2753 : /* Clean up */
2754 7 : table_close(rel, RowExclusiveLock);
2755 7 : heap_freetuple(newtuple);
2756 :
2757 7 : 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 18 : AlterDomainNotNull(List *names, bool notNull)
2769 : {
2770 : TypeName *typename;
2771 : Oid domainoid;
2772 : Relation typrel;
2773 : HeapTuple tup;
2774 : Form_pg_type typTup;
2775 18 : ObjectAddress address = InvalidObjectAddress;
2776 :
2777 : /* Make a TypeName so we can use standard type lookup machinery */
2778 18 : typename = makeTypeNameFromNameList(names);
2779 18 : domainoid = typenameTypeId(NULL, typename);
2780 :
2781 : /* Look up the domain in the type table */
2782 18 : typrel = table_open(TypeRelationId, RowExclusiveLock);
2783 :
2784 18 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2785 18 : if (!HeapTupleIsValid(tup))
2786 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2787 18 : typTup = (Form_pg_type) GETSTRUCT(tup);
2788 :
2789 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2790 18 : checkDomainOwner(tup);
2791 :
2792 : /* Is the domain already set to the desired constraint? */
2793 18 : if (typTup->typnotnull == notNull)
2794 : {
2795 0 : table_close(typrel, RowExclusiveLock);
2796 0 : return address;
2797 : }
2798 :
2799 18 : if (notNull)
2800 : {
2801 : Constraint *constr;
2802 :
2803 12 : constr = makeNode(Constraint);
2804 12 : constr->contype = CONSTR_NOTNULL;
2805 12 : constr->initially_valid = true;
2806 12 : constr->location = -1;
2807 :
2808 12 : domainAddNotNullConstraint(domainoid, typTup->typnamespace,
2809 : typTup->typbasetype, typTup->typtypmod,
2810 12 : constr, NameStr(typTup->typname), NULL);
2811 :
2812 12 : validateDomainNotNullConstraint(domainoid);
2813 : }
2814 : else
2815 : {
2816 : HeapTuple conTup;
2817 : ObjectAddress conobj;
2818 :
2819 6 : conTup = findDomainNotNullConstraint(domainoid);
2820 6 : if (conTup == NULL)
2821 0 : elog(ERROR, "could not find not-null constraint on domain \"%s\"", NameStr(typTup->typname));
2822 :
2823 6 : ObjectAddressSet(conobj, ConstraintRelationId, ((Form_pg_constraint) GETSTRUCT(conTup))->oid);
2824 6 : 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 12 : typTup->typnotnull = notNull;
2832 :
2833 12 : CatalogTupleUpdate(typrel, &tup->t_self, tup);
2834 :
2835 12 : InvokeObjectPostAlterHook(TypeRelationId, domainoid, 0);
2836 :
2837 12 : ObjectAddressSet(address, TypeRelationId, domainoid);
2838 :
2839 : /* Clean up */
2840 12 : heap_freetuple(tup);
2841 12 : table_close(typrel, RowExclusiveLock);
2842 :
2843 12 : 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 30 : 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 30 : bool found = false;
2866 : ObjectAddress address;
2867 :
2868 : /* Make a TypeName so we can use standard type lookup machinery */
2869 30 : typename = makeTypeNameFromNameList(names);
2870 30 : domainoid = typenameTypeId(NULL, typename);
2871 :
2872 : /* Look up the domain in the type table */
2873 30 : rel = table_open(TypeRelationId, RowExclusiveLock);
2874 :
2875 30 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2876 30 : 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 30 : checkDomainOwner(tup);
2881 :
2882 : /* Grab an appropriate lock on the pg_constraint relation */
2883 30 : conrel = table_open(ConstraintRelationId, RowExclusiveLock);
2884 :
2885 : /* Find and remove the target constraint */
2886 30 : ScanKeyInit(&skey[0],
2887 : Anum_pg_constraint_conrelid,
2888 : BTEqualStrategyNumber, F_OIDEQ,
2889 : ObjectIdGetDatum(InvalidOid));
2890 30 : ScanKeyInit(&skey[1],
2891 : Anum_pg_constraint_contypid,
2892 : BTEqualStrategyNumber, F_OIDEQ,
2893 : ObjectIdGetDatum(domainoid));
2894 30 : ScanKeyInit(&skey[2],
2895 : Anum_pg_constraint_conname,
2896 : BTEqualStrategyNumber, F_NAMEEQ,
2897 : CStringGetDatum(constrName));
2898 :
2899 30 : conscan = systable_beginscan(conrel, ConstraintRelidTypidNameIndexId, true,
2900 : NULL, 3, skey);
2901 :
2902 : /* There can be at most one matching row */
2903 30 : if ((contup = systable_getnext(conscan)) != NULL)
2904 : {
2905 24 : Form_pg_constraint construct = (Form_pg_constraint) GETSTRUCT(contup);
2906 : ObjectAddress conobj;
2907 :
2908 24 : if (construct->contype == CONSTRAINT_NOTNULL)
2909 : {
2910 6 : ((Form_pg_type) GETSTRUCT(tup))->typnotnull = false;
2911 6 : CatalogTupleUpdate(rel, &tup->t_self, tup);
2912 : }
2913 :
2914 24 : conobj.classId = ConstraintRelationId;
2915 24 : conobj.objectId = construct->oid;
2916 24 : conobj.objectSubId = 0;
2917 :
2918 24 : performDeletion(&conobj, behavior, 0);
2919 24 : found = true;
2920 : }
2921 :
2922 : /* Clean up after the scan */
2923 30 : systable_endscan(conscan);
2924 30 : table_close(conrel, RowExclusiveLock);
2925 :
2926 30 : if (!found)
2927 : {
2928 6 : if (!missing_ok)
2929 3 : ereport(ERROR,
2930 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2931 : errmsg("constraint \"%s\" of domain \"%s\" does not exist",
2932 : constrName, TypeNameToString(typename))));
2933 : else
2934 3 : 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 27 : CacheInvalidateHeapTuple(rel, tup, NULL);
2945 :
2946 27 : ObjectAddressSet(address, TypeRelationId, domainoid);
2947 :
2948 : /* Clean up */
2949 27 : table_close(rel, RowExclusiveLock);
2950 :
2951 27 : return address;
2952 : }
2953 :
2954 : /*
2955 : * AlterDomainAddConstraint
2956 : *
2957 : * Implements the ALTER DOMAIN .. ADD CONSTRAINT statement.
2958 : */
2959 : ObjectAddress
2960 91 : 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 91 : ObjectAddress address = InvalidObjectAddress;
2971 :
2972 : /* Make a TypeName so we can use standard type lookup machinery */
2973 91 : typename = makeTypeNameFromNameList(names);
2974 91 : domainoid = typenameTypeId(NULL, typename);
2975 :
2976 : /* Look up the domain in the type table */
2977 91 : typrel = table_open(TypeRelationId, RowExclusiveLock);
2978 :
2979 91 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2980 91 : if (!HeapTupleIsValid(tup))
2981 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2982 91 : typTup = (Form_pg_type) GETSTRUCT(tup);
2983 :
2984 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2985 91 : checkDomainOwner(tup);
2986 :
2987 91 : if (!IsA(newConstraint, Constraint))
2988 0 : elog(ERROR, "unrecognized node type: %d",
2989 : (int) nodeTag(newConstraint));
2990 :
2991 91 : constr = (Constraint *) newConstraint;
2992 :
2993 : /* enforced by parser */
2994 : Assert(constr->contype == CONSTR_CHECK || constr->contype == CONSTR_NOTNULL);
2995 :
2996 91 : if (constr->contype == CONSTR_CHECK)
2997 : {
2998 : /*
2999 : * First, process the constraint expression and add an entry to
3000 : * pg_constraint.
3001 : */
3002 :
3003 76 : ccbin = domainAddCheckConstraint(domainoid, typTup->typnamespace,
3004 : typTup->typbasetype, typTup->typtypmod,
3005 76 : 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 73 : if (!constr->skip_validation)
3014 66 : 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 43 : CacheInvalidateHeapTuple(typrel, tup, NULL);
3023 : }
3024 15 : else if (constr->contype == CONSTR_NOTNULL)
3025 : {
3026 : /* Is the domain already set NOT NULL? */
3027 15 : if (typTup->typnotnull)
3028 : {
3029 3 : table_close(typrel, RowExclusiveLock);
3030 3 : return address;
3031 : }
3032 12 : domainAddNotNullConstraint(domainoid, typTup->typnamespace,
3033 : typTup->typbasetype, typTup->typtypmod,
3034 12 : constr, NameStr(typTup->typname), constrAddr);
3035 :
3036 12 : if (!constr->skip_validation)
3037 12 : validateDomainNotNullConstraint(domainoid);
3038 :
3039 6 : typTup->typnotnull = true;
3040 6 : CatalogTupleUpdate(typrel, &tup->t_self, tup);
3041 : }
3042 :
3043 49 : ObjectAddressSet(address, TypeRelationId, domainoid);
3044 :
3045 : /* Clean up */
3046 49 : table_close(typrel, RowExclusiveLock);
3047 :
3048 49 : return address;
3049 : }
3050 :
3051 : /*
3052 : * AlterDomainValidateConstraint
3053 : *
3054 : * Implements the ALTER DOMAIN .. VALIDATE CONSTRAINT statement.
3055 : *
3056 : * Return value is the address of the validated constraint. If the constraint
3057 : * was already validated, InvalidObjectAddress is returned.
3058 : */
3059 : ObjectAddress
3060 6 : AlterDomainValidateConstraint(List *names, const char *constrName)
3061 : {
3062 : TypeName *typename;
3063 : Oid domainoid;
3064 : Relation typrel;
3065 : Relation conrel;
3066 : HeapTuple tup;
3067 : Form_pg_constraint con;
3068 : Form_pg_constraint copy_con;
3069 : char *conbin;
3070 : SysScanDesc scan;
3071 : Datum val;
3072 : HeapTuple tuple;
3073 : HeapTuple copyTuple;
3074 : ScanKeyData skey[3];
3075 6 : ObjectAddress address = InvalidObjectAddress;
3076 :
3077 : /* Make a TypeName so we can use standard type lookup machinery */
3078 6 : typename = makeTypeNameFromNameList(names);
3079 6 : domainoid = typenameTypeId(NULL, typename);
3080 :
3081 : /* Look up the domain in the type table */
3082 6 : typrel = table_open(TypeRelationId, AccessShareLock);
3083 :
3084 6 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(domainoid));
3085 6 : if (!HeapTupleIsValid(tup))
3086 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
3087 :
3088 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
3089 6 : checkDomainOwner(tup);
3090 :
3091 : /*
3092 : * Find and check the target constraint
3093 : */
3094 6 : conrel = table_open(ConstraintRelationId, RowExclusiveLock);
3095 :
3096 6 : ScanKeyInit(&skey[0],
3097 : Anum_pg_constraint_conrelid,
3098 : BTEqualStrategyNumber, F_OIDEQ,
3099 : ObjectIdGetDatum(InvalidOid));
3100 6 : ScanKeyInit(&skey[1],
3101 : Anum_pg_constraint_contypid,
3102 : BTEqualStrategyNumber, F_OIDEQ,
3103 : ObjectIdGetDatum(domainoid));
3104 6 : ScanKeyInit(&skey[2],
3105 : Anum_pg_constraint_conname,
3106 : BTEqualStrategyNumber, F_NAMEEQ,
3107 : CStringGetDatum(constrName));
3108 :
3109 6 : scan = systable_beginscan(conrel, ConstraintRelidTypidNameIndexId, true,
3110 : NULL, 3, skey);
3111 :
3112 : /* There can be at most one matching row */
3113 6 : if (!HeapTupleIsValid(tuple = systable_getnext(scan)))
3114 0 : ereport(ERROR,
3115 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3116 : errmsg("constraint \"%s\" of domain \"%s\" does not exist",
3117 : constrName, TypeNameToString(typename))));
3118 :
3119 6 : con = (Form_pg_constraint) GETSTRUCT(tuple);
3120 6 : if (con->contype != CONSTRAINT_CHECK)
3121 0 : ereport(ERROR,
3122 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3123 : errmsg("constraint \"%s\" of domain \"%s\" is not a check constraint",
3124 : constrName, TypeNameToString(typename))));
3125 :
3126 6 : if (!con->convalidated)
3127 : {
3128 6 : val = SysCacheGetAttrNotNull(CONSTROID, tuple, Anum_pg_constraint_conbin);
3129 6 : conbin = TextDatumGetCString(val);
3130 :
3131 : /*
3132 : * Locking related relations with ShareUpdateExclusiveLock is ok
3133 : * because not-yet-valid constraints are still enforced against
3134 : * concurrent inserts or updates.
3135 : */
3136 6 : validateDomainCheckConstraint(domainoid, conbin, ShareUpdateExclusiveLock);
3137 :
3138 : /*
3139 : * Now update the catalog, while we have the door open.
3140 : */
3141 3 : copyTuple = heap_copytuple(tuple);
3142 3 : copy_con = (Form_pg_constraint) GETSTRUCT(copyTuple);
3143 3 : copy_con->convalidated = true;
3144 3 : CatalogTupleUpdate(conrel, ©Tuple->t_self, copyTuple);
3145 :
3146 3 : InvokeObjectPostAlterHook(ConstraintRelationId, con->oid, 0);
3147 :
3148 3 : ObjectAddressSet(address, TypeRelationId, domainoid);
3149 :
3150 3 : heap_freetuple(copyTuple);
3151 : }
3152 :
3153 3 : systable_endscan(scan);
3154 :
3155 3 : table_close(typrel, AccessShareLock);
3156 3 : table_close(conrel, RowExclusiveLock);
3157 :
3158 3 : ReleaseSysCache(tup);
3159 :
3160 3 : return address;
3161 : }
3162 :
3163 : /*
3164 : * Verify that all columns currently using the domain are not null.
3165 : */
3166 : static void
3167 24 : validateDomainNotNullConstraint(Oid domainoid)
3168 : {
3169 : List *rels;
3170 : ListCell *rt;
3171 :
3172 : /* Fetch relation list with attributes based on this domain */
3173 : /* ShareLock is sufficient to prevent concurrent data changes */
3174 :
3175 24 : rels = get_rels_with_domain(domainoid, ShareLock);
3176 :
3177 33 : foreach(rt, rels)
3178 : {
3179 21 : RelToCheck *rtc = (RelToCheck *) lfirst(rt);
3180 21 : Relation testrel = rtc->rel;
3181 21 : TupleDesc tupdesc = RelationGetDescr(testrel);
3182 : TupleTableSlot *slot;
3183 : TableScanDesc scan;
3184 : Snapshot snapshot;
3185 :
3186 : /* Scan all tuples in this relation */
3187 21 : snapshot = RegisterSnapshot(GetLatestSnapshot());
3188 21 : scan = table_beginscan(testrel, snapshot, 0, NULL);
3189 21 : slot = table_slot_create(testrel, NULL);
3190 30 : while (table_scan_getnextslot(scan, ForwardScanDirection, slot))
3191 : {
3192 : int i;
3193 :
3194 : /* Test attributes that are of the domain */
3195 45 : for (i = 0; i < rtc->natts; i++)
3196 : {
3197 36 : int attnum = rtc->atts[i];
3198 36 : Form_pg_attribute attr = TupleDescAttr(tupdesc, attnum - 1);
3199 :
3200 36 : if (slot_attisnull(slot, attnum))
3201 : {
3202 : /*
3203 : * In principle the auxiliary information for this error
3204 : * should be errdatatype(), but errtablecol() seems
3205 : * considerably more useful in practice. Since this code
3206 : * only executes in an ALTER DOMAIN command, the client
3207 : * should already know which domain is in question.
3208 : */
3209 12 : ereport(ERROR,
3210 : (errcode(ERRCODE_NOT_NULL_VIOLATION),
3211 : errmsg("column \"%s\" of table \"%s\" contains null values",
3212 : NameStr(attr->attname),
3213 : RelationGetRelationName(testrel)),
3214 : errtablecol(testrel, attnum)));
3215 : }
3216 : }
3217 : }
3218 9 : ExecDropSingleTupleTableSlot(slot);
3219 9 : table_endscan(scan);
3220 9 : UnregisterSnapshot(snapshot);
3221 :
3222 : /* Close each rel after processing, but keep lock */
3223 9 : table_close(testrel, NoLock);
3224 : }
3225 12 : }
3226 :
3227 : /*
3228 : * Verify that all columns currently using the domain satisfy the given check
3229 : * constraint expression.
3230 : *
3231 : * It is used to validate existing constraints and to add newly created check
3232 : * constraints to a domain.
3233 : *
3234 : * The lockmode is used for relations using the domain. It should be
3235 : * ShareLock when adding a new constraint to domain. It can be
3236 : * ShareUpdateExclusiveLock when validating an existing constraint.
3237 : */
3238 : static void
3239 72 : validateDomainCheckConstraint(Oid domainoid, const char *ccbin, LOCKMODE lockmode)
3240 : {
3241 72 : Expr *expr = (Expr *) stringToNode(ccbin);
3242 : List *rels;
3243 : ListCell *rt;
3244 : EState *estate;
3245 : ExprContext *econtext;
3246 : ExprState *exprstate;
3247 :
3248 : /* Need an EState to run ExecEvalExpr */
3249 72 : estate = CreateExecutorState();
3250 72 : econtext = GetPerTupleExprContext(estate);
3251 :
3252 : /* build execution state for expr */
3253 72 : exprstate = ExecPrepareExpr(expr, estate);
3254 :
3255 : /* Fetch relation list with attributes based on this domain */
3256 72 : rels = get_rels_with_domain(domainoid, lockmode);
3257 :
3258 75 : foreach(rt, rels)
3259 : {
3260 36 : RelToCheck *rtc = (RelToCheck *) lfirst(rt);
3261 36 : Relation testrel = rtc->rel;
3262 36 : TupleDesc tupdesc = RelationGetDescr(testrel);
3263 : TupleTableSlot *slot;
3264 : TableScanDesc scan;
3265 : Snapshot snapshot;
3266 :
3267 : /* Scan all tuples in this relation */
3268 36 : snapshot = RegisterSnapshot(GetLatestSnapshot());
3269 36 : scan = table_beginscan(testrel, snapshot, 0, NULL);
3270 36 : slot = table_slot_create(testrel, NULL);
3271 84 : while (table_scan_getnextslot(scan, ForwardScanDirection, slot))
3272 : {
3273 : int i;
3274 :
3275 : /* Test attributes that are of the domain */
3276 114 : for (i = 0; i < rtc->natts; i++)
3277 : {
3278 66 : int attnum = rtc->atts[i];
3279 : Datum d;
3280 : bool isNull;
3281 : Datum conResult;
3282 :
3283 66 : d = slot_getattr(slot, attnum, &isNull);
3284 :
3285 66 : econtext->domainValue_datum = d;
3286 66 : econtext->domainValue_isNull = isNull;
3287 :
3288 66 : conResult = ExecEvalExprSwitchContext(exprstate,
3289 : econtext,
3290 : &isNull);
3291 :
3292 66 : if (!isNull && !DatumGetBool(conResult))
3293 : {
3294 18 : Form_pg_attribute attr = TupleDescAttr(tupdesc, attnum - 1);
3295 :
3296 : /*
3297 : * In principle the auxiliary information for this error
3298 : * should be errdomainconstraint(), but errtablecol()
3299 : * seems considerably more useful in practice. Since this
3300 : * code only executes in an ALTER DOMAIN command, the
3301 : * client should already know which domain is in question,
3302 : * and which constraint too.
3303 : */
3304 18 : ereport(ERROR,
3305 : (errcode(ERRCODE_CHECK_VIOLATION),
3306 : errmsg("column \"%s\" of table \"%s\" contains values that violate the new constraint",
3307 : NameStr(attr->attname),
3308 : RelationGetRelationName(testrel)),
3309 : errtablecol(testrel, attnum)));
3310 : }
3311 : }
3312 :
3313 48 : ResetExprContext(econtext);
3314 : }
3315 18 : ExecDropSingleTupleTableSlot(slot);
3316 18 : table_endscan(scan);
3317 18 : UnregisterSnapshot(snapshot);
3318 :
3319 : /* Hold relation lock till commit (XXX bad for concurrency) */
3320 18 : table_close(testrel, NoLock);
3321 : }
3322 :
3323 39 : FreeExecutorState(estate);
3324 39 : }
3325 :
3326 : /*
3327 : * get_rels_with_domain
3328 : *
3329 : * Fetch all relations / attributes which are using the domain
3330 : *
3331 : * The result is a list of RelToCheck structs, one for each distinct
3332 : * relation, each containing one or more attribute numbers that are of
3333 : * the domain type. We have opened each rel and acquired the specified lock
3334 : * type on it.
3335 : *
3336 : * We support nested domains by including attributes that are of derived
3337 : * domain types. Current callers do not need to distinguish between attributes
3338 : * that are of exactly the given domain and those that are of derived domains.
3339 : *
3340 : * XXX this is completely broken because there is no way to lock the domain
3341 : * to prevent columns from being added or dropped while our command runs.
3342 : * We can partially protect against column drops by locking relations as we
3343 : * come across them, but there is still a race condition (the window between
3344 : * seeing a pg_depend entry and acquiring lock on the relation it references).
3345 : * Also, holding locks on all these relations simultaneously creates a non-
3346 : * trivial risk of deadlock. We can minimize but not eliminate the deadlock
3347 : * risk by using the weakest suitable lock (ShareLock for most callers).
3348 : *
3349 : * XXX the API for this is not sufficient to support checking domain values
3350 : * that are inside container types, such as composite types, arrays, or
3351 : * ranges. Currently we just error out if a container type containing the
3352 : * target domain is stored anywhere.
3353 : *
3354 : * Generally used for retrieving a list of tests when adding
3355 : * new constraints to a domain.
3356 : */
3357 : static List *
3358 102 : get_rels_with_domain(Oid domainOid, LOCKMODE lockmode)
3359 : {
3360 102 : List *result = NIL;
3361 102 : char *domainTypeName = format_type_be(domainOid);
3362 : Relation depRel;
3363 : ScanKeyData key[2];
3364 : SysScanDesc depScan;
3365 : HeapTuple depTup;
3366 :
3367 : Assert(lockmode != NoLock);
3368 :
3369 : /* since this function recurses, it could be driven to stack overflow */
3370 102 : check_stack_depth();
3371 :
3372 : /*
3373 : * We scan pg_depend to find those things that depend on the domain. (We
3374 : * assume we can ignore refobjsubid for a domain.)
3375 : */
3376 102 : depRel = table_open(DependRelationId, AccessShareLock);
3377 :
3378 102 : ScanKeyInit(&key[0],
3379 : Anum_pg_depend_refclassid,
3380 : BTEqualStrategyNumber, F_OIDEQ,
3381 : ObjectIdGetDatum(TypeRelationId));
3382 102 : ScanKeyInit(&key[1],
3383 : Anum_pg_depend_refobjid,
3384 : BTEqualStrategyNumber, F_OIDEQ,
3385 : ObjectIdGetDatum(domainOid));
3386 :
3387 102 : depScan = systable_beginscan(depRel, DependReferenceIndexId, true,
3388 : NULL, 2, key);
3389 :
3390 352 : while (HeapTupleIsValid(depTup = systable_getnext(depScan)))
3391 : {
3392 265 : Form_pg_depend pg_depend = (Form_pg_depend) GETSTRUCT(depTup);
3393 265 : RelToCheck *rtc = NULL;
3394 : ListCell *rellist;
3395 : Form_pg_attribute pg_att;
3396 : int ptr;
3397 :
3398 : /* Check for directly dependent types */
3399 265 : if (pg_depend->classid == TypeRelationId)
3400 : {
3401 111 : if (get_typtype(pg_depend->objid) == TYPTYPE_DOMAIN)
3402 : {
3403 : /*
3404 : * This is a sub-domain, so recursively add dependent columns
3405 : * to the output list. This is a bit inefficient since we may
3406 : * fail to combine RelToCheck entries when attributes of the
3407 : * same rel have different derived domain types, but it's
3408 : * probably not worth improving.
3409 : */
3410 6 : result = list_concat(result,
3411 6 : get_rels_with_domain(pg_depend->objid,
3412 : lockmode));
3413 : }
3414 : else
3415 : {
3416 : /*
3417 : * Otherwise, it is some container type using the domain, so
3418 : * fail if there are any columns of this type.
3419 : */
3420 105 : find_composite_type_dependencies(pg_depend->objid,
3421 : NULL,
3422 : domainTypeName);
3423 : }
3424 108 : continue;
3425 : }
3426 :
3427 : /* Else, ignore dependees that aren't user columns of relations */
3428 : /* (we assume system columns are never of domain types) */
3429 154 : if (pg_depend->classid != RelationRelationId ||
3430 108 : pg_depend->objsubid <= 0)
3431 46 : continue;
3432 :
3433 : /* See if we already have an entry for this relation */
3434 108 : foreach(rellist, result)
3435 : {
3436 21 : RelToCheck *rt = (RelToCheck *) lfirst(rellist);
3437 :
3438 21 : if (RelationGetRelid(rt->rel) == pg_depend->objid)
3439 : {
3440 21 : rtc = rt;
3441 21 : break;
3442 : }
3443 : }
3444 :
3445 108 : if (rtc == NULL)
3446 : {
3447 : /* First attribute found for this relation */
3448 : Relation rel;
3449 :
3450 : /* Acquire requested lock on relation */
3451 87 : rel = relation_open(pg_depend->objid, lockmode);
3452 :
3453 : /*
3454 : * Check to see if rowtype is stored anyplace as a composite-type
3455 : * column; if so we have to fail, for now anyway.
3456 : */
3457 87 : if (OidIsValid(rel->rd_rel->reltype))
3458 87 : find_composite_type_dependencies(rel->rd_rel->reltype,
3459 : NULL,
3460 : domainTypeName);
3461 :
3462 : /*
3463 : * Otherwise, we can ignore relations except those with both
3464 : * storage and user-chosen column types.
3465 : *
3466 : * XXX If an index-only scan could satisfy "col::some_domain" from
3467 : * a suitable expression index, this should also check expression
3468 : * index columns.
3469 : */
3470 75 : if (rel->rd_rel->relkind != RELKIND_RELATION &&
3471 18 : rel->rd_rel->relkind != RELKIND_MATVIEW)
3472 : {
3473 18 : relation_close(rel, lockmode);
3474 18 : continue;
3475 : }
3476 :
3477 : /* Build the RelToCheck entry with enough space for all atts */
3478 57 : rtc = palloc_object(RelToCheck);
3479 57 : rtc->rel = rel;
3480 57 : rtc->natts = 0;
3481 57 : rtc->atts = palloc_array(int, RelationGetNumberOfAttributes(rel));
3482 57 : result = lappend(result, rtc);
3483 : }
3484 :
3485 : /*
3486 : * Confirm column has not been dropped, and is of the expected type.
3487 : * This defends against an ALTER DROP COLUMN occurring just before we
3488 : * acquired lock ... but if the whole table were dropped, we'd still
3489 : * have a problem.
3490 : */
3491 78 : if (pg_depend->objsubid > RelationGetNumberOfAttributes(rtc->rel))
3492 0 : continue;
3493 78 : pg_att = TupleDescAttr(rtc->rel->rd_att, pg_depend->objsubid - 1);
3494 78 : if (pg_att->attisdropped || pg_att->atttypid != domainOid)
3495 0 : continue;
3496 :
3497 : /*
3498 : * Okay, add column to result. We store the columns in column-number
3499 : * order; this is just a hack to improve predictability of regression
3500 : * test output ...
3501 : */
3502 : Assert(rtc->natts < RelationGetNumberOfAttributes(rtc->rel));
3503 :
3504 78 : ptr = rtc->natts++;
3505 78 : while (ptr > 0 && rtc->atts[ptr - 1] > pg_depend->objsubid)
3506 : {
3507 0 : rtc->atts[ptr] = rtc->atts[ptr - 1];
3508 0 : ptr--;
3509 : }
3510 78 : rtc->atts[ptr] = pg_depend->objsubid;
3511 : }
3512 :
3513 87 : systable_endscan(depScan);
3514 :
3515 87 : relation_close(depRel, AccessShareLock);
3516 :
3517 87 : return result;
3518 : }
3519 :
3520 : /*
3521 : * checkDomainOwner
3522 : *
3523 : * Check that the type is actually a domain and that the current user
3524 : * has permission to do ALTER DOMAIN on it. Throw an error if not.
3525 : */
3526 : void
3527 155 : checkDomainOwner(HeapTuple tup)
3528 : {
3529 155 : Form_pg_type typTup = (Form_pg_type) GETSTRUCT(tup);
3530 :
3531 : /* Check that this is actually a domain */
3532 155 : if (typTup->typtype != TYPTYPE_DOMAIN)
3533 0 : ereport(ERROR,
3534 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3535 : errmsg("%s is not a domain",
3536 : format_type_be(typTup->oid))));
3537 :
3538 : /* Permission check: must own type */
3539 155 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
3540 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
3541 155 : }
3542 :
3543 : /*
3544 : * domainAddCheckConstraint - code shared between CREATE and ALTER DOMAIN
3545 : */
3546 : static char *
3547 359 : domainAddCheckConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
3548 : int typMod, Constraint *constr,
3549 : const char *domainName, ObjectAddress *constrAddr)
3550 : {
3551 : Node *expr;
3552 : char *ccbin;
3553 : ParseState *pstate;
3554 : CoerceToDomainValue *domVal;
3555 : Oid ccoid;
3556 :
3557 : Assert(constr->contype == CONSTR_CHECK);
3558 :
3559 : /*
3560 : * Assign or validate constraint name
3561 : */
3562 359 : if (constr->conname)
3563 : {
3564 200 : if (ConstraintNameIsUsed(CONSTRAINT_DOMAIN,
3565 : domainOid,
3566 200 : constr->conname))
3567 0 : ereport(ERROR,
3568 : (errcode(ERRCODE_DUPLICATE_OBJECT),
3569 : errmsg("constraint \"%s\" for domain \"%s\" already exists",
3570 : constr->conname, domainName)));
3571 : }
3572 : else
3573 159 : constr->conname = ChooseConstraintName(domainName,
3574 : NULL,
3575 : "check",
3576 : domainNamespace,
3577 : NIL);
3578 :
3579 : /*
3580 : * Convert the A_EXPR in raw_expr into an EXPR
3581 : */
3582 359 : pstate = make_parsestate(NULL);
3583 :
3584 : /*
3585 : * Set up a CoerceToDomainValue to represent the occurrence of VALUE in
3586 : * the expression. Note that it will appear to have the type of the base
3587 : * type, not the domain. This seems correct since within the check
3588 : * expression, we should not assume the input value can be considered a
3589 : * member of the domain.
3590 : */
3591 359 : domVal = makeNode(CoerceToDomainValue);
3592 359 : domVal->typeId = baseTypeOid;
3593 359 : domVal->typeMod = typMod;
3594 359 : domVal->collation = get_typcollation(baseTypeOid);
3595 359 : domVal->location = -1; /* will be set when/if used */
3596 :
3597 359 : pstate->p_pre_columnref_hook = replace_domain_constraint_value;
3598 359 : pstate->p_ref_hook_state = domVal;
3599 :
3600 359 : expr = transformExpr(pstate, constr->raw_expr, EXPR_KIND_DOMAIN_CHECK);
3601 :
3602 : /*
3603 : * Make sure it yields a boolean result.
3604 : */
3605 356 : expr = coerce_to_boolean(pstate, expr, "CHECK");
3606 :
3607 : /*
3608 : * Fix up collation information.
3609 : */
3610 356 : assign_expr_collations(pstate, expr);
3611 :
3612 : /*
3613 : * Domains don't allow variables (this is probably dead code now that
3614 : * add_missing_from is history, but let's be sure).
3615 : */
3616 712 : if (pstate->p_rtable != NIL ||
3617 356 : contain_var_clause(expr))
3618 0 : ereport(ERROR,
3619 : (errcode(ERRCODE_INVALID_COLUMN_REFERENCE),
3620 : errmsg("cannot use table references in domain check constraint")));
3621 :
3622 : /*
3623 : * Convert to string form for storage.
3624 : */
3625 356 : ccbin = nodeToString(expr);
3626 :
3627 : /*
3628 : * Store the constraint in pg_constraint
3629 : */
3630 : ccoid =
3631 356 : CreateConstraintEntry(constr->conname, /* Constraint Name */
3632 : domainNamespace, /* namespace */
3633 : CONSTRAINT_CHECK, /* Constraint Type */
3634 : false, /* Is Deferrable */
3635 : false, /* Is Deferred */
3636 : true, /* Is Enforced */
3637 356 : !constr->skip_validation, /* Is Validated */
3638 : InvalidOid, /* no parent constraint */
3639 : InvalidOid, /* not a relation constraint */
3640 : NULL,
3641 : 0,
3642 : 0,
3643 : domainOid, /* domain constraint */
3644 : InvalidOid, /* no associated index */
3645 : InvalidOid, /* Foreign key fields */
3646 : NULL,
3647 : NULL,
3648 : NULL,
3649 : NULL,
3650 : 0,
3651 : ' ',
3652 : ' ',
3653 : NULL,
3654 : 0,
3655 : ' ',
3656 : NULL, /* not an exclusion constraint */
3657 : expr, /* Tree form of check constraint */
3658 : ccbin, /* Binary form of check constraint */
3659 : true, /* is local */
3660 : 0, /* inhcount */
3661 : false, /* connoinherit */
3662 : false, /* conperiod */
3663 356 : false); /* is_internal */
3664 356 : if (constrAddr)
3665 69 : ObjectAddressSet(*constrAddr, ConstraintRelationId, ccoid);
3666 :
3667 : /*
3668 : * Return the compiled constraint expression so the calling routine can
3669 : * perform any additional required tests.
3670 : */
3671 356 : return ccbin;
3672 : }
3673 :
3674 : /* Parser pre_columnref_hook for domain CHECK constraint parsing */
3675 : static Node *
3676 411 : replace_domain_constraint_value(ParseState *pstate, ColumnRef *cref)
3677 : {
3678 : /*
3679 : * Check for a reference to "value", and if that's what it is, replace
3680 : * with a CoerceToDomainValue as prepared for us by
3681 : * domainAddCheckConstraint. (We handle VALUE as a name, not a keyword, to
3682 : * avoid breaking a lot of applications that have used VALUE as a column
3683 : * name in the past.)
3684 : */
3685 411 : if (list_length(cref->fields) == 1)
3686 : {
3687 411 : Node *field1 = (Node *) linitial(cref->fields);
3688 : char *colname;
3689 :
3690 411 : colname = strVal(field1);
3691 411 : if (strcmp(colname, "value") == 0)
3692 : {
3693 411 : CoerceToDomainValue *domVal = copyObject(pstate->p_ref_hook_state);
3694 :
3695 : /* Propagate location knowledge, if any */
3696 411 : domVal->location = cref->location;
3697 411 : return (Node *) domVal;
3698 : }
3699 : }
3700 0 : return NULL;
3701 : }
3702 :
3703 : /*
3704 : * domainAddNotNullConstraint - code shared between CREATE and ALTER DOMAIN
3705 : */
3706 : static void
3707 68 : domainAddNotNullConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
3708 : int typMod, Constraint *constr,
3709 : const char *domainName, ObjectAddress *constrAddr)
3710 : {
3711 : Oid ccoid;
3712 :
3713 : Assert(constr->contype == CONSTR_NOTNULL);
3714 :
3715 : /*
3716 : * Assign or validate constraint name
3717 : */
3718 68 : if (constr->conname)
3719 : {
3720 7 : if (ConstraintNameIsUsed(CONSTRAINT_DOMAIN,
3721 : domainOid,
3722 7 : constr->conname))
3723 0 : ereport(ERROR,
3724 : (errcode(ERRCODE_DUPLICATE_OBJECT),
3725 : errmsg("constraint \"%s\" for domain \"%s\" already exists",
3726 : constr->conname, domainName)));
3727 : }
3728 : else
3729 61 : constr->conname = ChooseConstraintName(domainName,
3730 : NULL,
3731 : "not_null",
3732 : domainNamespace,
3733 : NIL);
3734 :
3735 : /*
3736 : * Store the constraint in pg_constraint
3737 : */
3738 : ccoid =
3739 68 : CreateConstraintEntry(constr->conname, /* Constraint Name */
3740 : domainNamespace, /* namespace */
3741 : CONSTRAINT_NOTNULL, /* Constraint Type */
3742 : false, /* Is Deferrable */
3743 : false, /* Is Deferred */
3744 : true, /* Is Enforced */
3745 68 : !constr->skip_validation, /* Is Validated */
3746 : InvalidOid, /* no parent constraint */
3747 : InvalidOid, /* not a relation constraint */
3748 : NULL,
3749 : 0,
3750 : 0,
3751 : domainOid, /* domain constraint */
3752 : InvalidOid, /* no associated index */
3753 : InvalidOid, /* Foreign key fields */
3754 : NULL,
3755 : NULL,
3756 : NULL,
3757 : NULL,
3758 : 0,
3759 : ' ',
3760 : ' ',
3761 : NULL,
3762 : 0,
3763 : ' ',
3764 : NULL, /* not an exclusion constraint */
3765 : NULL,
3766 : NULL,
3767 : true, /* is local */
3768 : 0, /* inhcount */
3769 : false, /* connoinherit */
3770 : false, /* conperiod */
3771 68 : false); /* is_internal */
3772 :
3773 68 : if (constrAddr)
3774 12 : ObjectAddressSet(*constrAddr, ConstraintRelationId, ccoid);
3775 68 : }
3776 :
3777 :
3778 : /*
3779 : * Execute ALTER TYPE RENAME
3780 : */
3781 : ObjectAddress
3782 16 : RenameType(RenameStmt *stmt)
3783 : {
3784 16 : List *names = castNode(List, stmt->object);
3785 16 : const char *newTypeName = stmt->newname;
3786 : TypeName *typename;
3787 : Oid typeOid;
3788 : Relation rel;
3789 : HeapTuple tup;
3790 : Form_pg_type typTup;
3791 : ObjectAddress address;
3792 :
3793 : /* Make a TypeName so we can use standard type lookup machinery */
3794 16 : typename = makeTypeNameFromNameList(names);
3795 16 : typeOid = typenameTypeId(NULL, typename);
3796 :
3797 : /* Look up the type in the type table */
3798 16 : rel = table_open(TypeRelationId, RowExclusiveLock);
3799 :
3800 16 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
3801 16 : if (!HeapTupleIsValid(tup))
3802 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
3803 16 : typTup = (Form_pg_type) GETSTRUCT(tup);
3804 :
3805 : /* check permissions on type */
3806 16 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
3807 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
3808 :
3809 : /* ALTER DOMAIN used on a non-domain? */
3810 16 : if (stmt->renameType == OBJECT_DOMAIN && typTup->typtype != TYPTYPE_DOMAIN)
3811 0 : ereport(ERROR,
3812 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3813 : errmsg("%s is not a domain",
3814 : format_type_be(typeOid))));
3815 :
3816 : /*
3817 : * If it's a composite type, we need to check that it really is a
3818 : * free-standing composite type, and not a table's rowtype. We want people
3819 : * to use ALTER TABLE not ALTER TYPE for that case.
3820 : */
3821 17 : if (typTup->typtype == TYPTYPE_COMPOSITE &&
3822 1 : get_rel_relkind(typTup->typrelid) != RELKIND_COMPOSITE_TYPE)
3823 0 : ereport(ERROR,
3824 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3825 : errmsg("%s is a table's row type",
3826 : format_type_be(typeOid)),
3827 : /* translator: %s is an SQL ALTER command */
3828 : errhint("Use %s instead.",
3829 : "ALTER TABLE")));
3830 :
3831 : /* don't allow direct alteration of array types, either */
3832 16 : if (IsTrueArrayType(typTup))
3833 0 : ereport(ERROR,
3834 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3835 : errmsg("cannot alter array type %s",
3836 : format_type_be(typeOid)),
3837 : errhint("You can alter type %s, which will alter the array type as well.",
3838 : format_type_be(typTup->typelem))));
3839 :
3840 : /* we do allow separate renaming of multirange types, though */
3841 :
3842 : /*
3843 : * If type is composite we need to rename associated pg_class entry too.
3844 : * RenameRelationInternal will call RenameTypeInternal automatically.
3845 : */
3846 16 : if (typTup->typtype == TYPTYPE_COMPOSITE)
3847 1 : RenameRelationInternal(typTup->typrelid, newTypeName, false, false);
3848 : else
3849 15 : RenameTypeInternal(typeOid, newTypeName,
3850 : typTup->typnamespace);
3851 :
3852 16 : ObjectAddressSet(address, TypeRelationId, typeOid);
3853 : /* Clean up */
3854 16 : table_close(rel, RowExclusiveLock);
3855 :
3856 16 : return address;
3857 : }
3858 :
3859 : /*
3860 : * Change the owner of a type.
3861 : */
3862 : ObjectAddress
3863 66 : AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype)
3864 : {
3865 : TypeName *typename;
3866 : Oid typeOid;
3867 : Relation rel;
3868 : HeapTuple tup;
3869 : HeapTuple newtup;
3870 : Form_pg_type typTup;
3871 : AclResult aclresult;
3872 : ObjectAddress address;
3873 :
3874 66 : rel = table_open(TypeRelationId, RowExclusiveLock);
3875 :
3876 : /* Make a TypeName so we can use standard type lookup machinery */
3877 66 : typename = makeTypeNameFromNameList(names);
3878 :
3879 : /* Use LookupTypeName here so that shell types can be processed */
3880 66 : tup = LookupTypeName(NULL, typename, NULL, false);
3881 66 : if (tup == NULL)
3882 0 : ereport(ERROR,
3883 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3884 : errmsg("type \"%s\" does not exist",
3885 : TypeNameToString(typename))));
3886 66 : typeOid = typeTypeId(tup);
3887 :
3888 : /* Copy the syscache entry so we can scribble on it below */
3889 66 : newtup = heap_copytuple(tup);
3890 66 : ReleaseSysCache(tup);
3891 66 : tup = newtup;
3892 66 : typTup = (Form_pg_type) GETSTRUCT(tup);
3893 :
3894 : /* Don't allow ALTER DOMAIN on a type */
3895 66 : if (objecttype == OBJECT_DOMAIN && typTup->typtype != TYPTYPE_DOMAIN)
3896 0 : ereport(ERROR,
3897 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3898 : errmsg("%s is not a domain",
3899 : format_type_be(typeOid))));
3900 :
3901 : /*
3902 : * If it's a composite type, we need to check that it really is a
3903 : * free-standing composite type, and not a table's rowtype. We want people
3904 : * to use ALTER TABLE not ALTER TYPE for that case.
3905 : */
3906 82 : if (typTup->typtype == TYPTYPE_COMPOSITE &&
3907 16 : get_rel_relkind(typTup->typrelid) != RELKIND_COMPOSITE_TYPE)
3908 0 : ereport(ERROR,
3909 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3910 : errmsg("%s is a table's row type",
3911 : format_type_be(typeOid)),
3912 : /* translator: %s is an SQL ALTER command */
3913 : errhint("Use %s instead.",
3914 : "ALTER TABLE")));
3915 :
3916 : /* don't allow direct alteration of array types, either */
3917 66 : if (IsTrueArrayType(typTup))
3918 0 : ereport(ERROR,
3919 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3920 : errmsg("cannot alter array type %s",
3921 : format_type_be(typeOid)),
3922 : errhint("You can alter type %s, which will alter the array type as well.",
3923 : format_type_be(typTup->typelem))));
3924 :
3925 : /* don't allow direct alteration of multirange types, either */
3926 66 : if (typTup->typtype == TYPTYPE_MULTIRANGE)
3927 : {
3928 3 : Oid rangetype = get_multirange_range(typeOid);
3929 :
3930 : /* We don't expect get_multirange_range to fail, but cope if so */
3931 3 : ereport(ERROR,
3932 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3933 : errmsg("cannot alter multirange type %s",
3934 : format_type_be(typeOid)),
3935 : OidIsValid(rangetype) ?
3936 : errhint("You can alter type %s, which will alter the multirange type as well.",
3937 : format_type_be(rangetype)) : 0));
3938 : }
3939 :
3940 : /*
3941 : * If the new owner is the same as the existing owner, consider the
3942 : * command to have succeeded. This is for dump restoration purposes.
3943 : */
3944 63 : if (typTup->typowner != newOwnerId)
3945 : {
3946 : /* Superusers can always do it */
3947 3 : if (!superuser())
3948 : {
3949 : /* Otherwise, must be owner of the existing object */
3950 0 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
3951 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
3952 :
3953 : /* Must be able to become new owner */
3954 0 : check_can_set_role(GetUserId(), newOwnerId);
3955 :
3956 : /* New owner must have CREATE privilege on namespace */
3957 0 : aclresult = object_aclcheck(NamespaceRelationId, typTup->typnamespace,
3958 : newOwnerId,
3959 : ACL_CREATE);
3960 0 : if (aclresult != ACLCHECK_OK)
3961 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
3962 0 : get_namespace_name(typTup->typnamespace));
3963 : }
3964 :
3965 3 : AlterTypeOwner_oid(typeOid, newOwnerId, true);
3966 : }
3967 :
3968 63 : ObjectAddressSet(address, TypeRelationId, typeOid);
3969 :
3970 : /* Clean up */
3971 63 : table_close(rel, RowExclusiveLock);
3972 :
3973 63 : return address;
3974 : }
3975 :
3976 : /*
3977 : * AlterTypeOwner_oid - change type owner unconditionally
3978 : *
3979 : * This function recurses to handle dependent types (arrays and multiranges).
3980 : * It invokes any necessary access object hooks. If hasDependEntry is true,
3981 : * this function modifies the pg_shdepend entry appropriately (this should be
3982 : * passed as false only for table rowtypes and dependent types).
3983 : *
3984 : * This is used by ALTER TABLE/TYPE OWNER commands, as well as by REASSIGN
3985 : * OWNED BY. It assumes the caller has done all needed checks.
3986 : */
3987 : void
3988 13 : AlterTypeOwner_oid(Oid typeOid, Oid newOwnerId, bool hasDependEntry)
3989 : {
3990 : Relation rel;
3991 : HeapTuple tup;
3992 : Form_pg_type typTup;
3993 :
3994 13 : rel = table_open(TypeRelationId, RowExclusiveLock);
3995 :
3996 13 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typeOid));
3997 13 : if (!HeapTupleIsValid(tup))
3998 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
3999 13 : typTup = (Form_pg_type) GETSTRUCT(tup);
4000 :
4001 : /*
4002 : * If it's a composite type, invoke ATExecChangeOwner so that we fix up
4003 : * the pg_class entry properly. That will call back to
4004 : * AlterTypeOwnerInternal to take care of the pg_type entry(s).
4005 : */
4006 13 : if (typTup->typtype == TYPTYPE_COMPOSITE)
4007 4 : ATExecChangeOwner(typTup->typrelid, newOwnerId, true, AccessExclusiveLock);
4008 : else
4009 9 : AlterTypeOwnerInternal(typeOid, newOwnerId);
4010 :
4011 : /* Update owner dependency reference */
4012 13 : if (hasDependEntry)
4013 13 : changeDependencyOnOwner(TypeRelationId, typeOid, newOwnerId);
4014 :
4015 13 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4016 :
4017 13 : ReleaseSysCache(tup);
4018 13 : table_close(rel, RowExclusiveLock);
4019 13 : }
4020 :
4021 : /*
4022 : * AlterTypeOwnerInternal - bare-bones type owner change.
4023 : *
4024 : * This routine simply modifies the owner of a pg_type entry, and recurses
4025 : * to handle any dependent types.
4026 : */
4027 : void
4028 372 : AlterTypeOwnerInternal(Oid typeOid, Oid newOwnerId)
4029 : {
4030 : Relation rel;
4031 : HeapTuple tup;
4032 : Form_pg_type typTup;
4033 : Datum repl_val[Natts_pg_type];
4034 : bool repl_null[Natts_pg_type];
4035 : bool repl_repl[Natts_pg_type];
4036 : Acl *newAcl;
4037 : Datum aclDatum;
4038 : bool isNull;
4039 :
4040 372 : rel = table_open(TypeRelationId, RowExclusiveLock);
4041 :
4042 372 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
4043 372 : if (!HeapTupleIsValid(tup))
4044 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
4045 372 : typTup = (Form_pg_type) GETSTRUCT(tup);
4046 :
4047 372 : memset(repl_null, false, sizeof(repl_null));
4048 372 : memset(repl_repl, false, sizeof(repl_repl));
4049 :
4050 372 : repl_repl[Anum_pg_type_typowner - 1] = true;
4051 372 : repl_val[Anum_pg_type_typowner - 1] = ObjectIdGetDatum(newOwnerId);
4052 :
4053 372 : aclDatum = heap_getattr(tup,
4054 : Anum_pg_type_typacl,
4055 : RelationGetDescr(rel),
4056 : &isNull);
4057 : /* Null ACLs do not require changes */
4058 372 : if (!isNull)
4059 : {
4060 1 : newAcl = aclnewowner(DatumGetAclP(aclDatum),
4061 : typTup->typowner, newOwnerId);
4062 1 : repl_repl[Anum_pg_type_typacl - 1] = true;
4063 1 : repl_val[Anum_pg_type_typacl - 1] = PointerGetDatum(newAcl);
4064 : }
4065 :
4066 372 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), repl_val, repl_null,
4067 : repl_repl);
4068 :
4069 372 : CatalogTupleUpdate(rel, &tup->t_self, tup);
4070 :
4071 : /* If it has an array type, update that too */
4072 372 : if (OidIsValid(typTup->typarray))
4073 186 : AlterTypeOwnerInternal(typTup->typarray, newOwnerId);
4074 :
4075 : /* If it is a range type, update the associated multirange too */
4076 372 : if (typTup->typtype == TYPTYPE_RANGE)
4077 : {
4078 6 : Oid multirange_typeid = get_range_multirange(typeOid);
4079 :
4080 6 : if (!OidIsValid(multirange_typeid))
4081 0 : ereport(ERROR,
4082 : (errcode(ERRCODE_UNDEFINED_OBJECT),
4083 : errmsg("could not find multirange type for data type %s",
4084 : format_type_be(typeOid))));
4085 6 : AlterTypeOwnerInternal(multirange_typeid, newOwnerId);
4086 : }
4087 :
4088 : /* Clean up */
4089 372 : table_close(rel, RowExclusiveLock);
4090 372 : }
4091 :
4092 : /*
4093 : * Execute ALTER TYPE SET SCHEMA
4094 : */
4095 : ObjectAddress
4096 9 : AlterTypeNamespace(List *names, const char *newschema, ObjectType objecttype,
4097 : Oid *oldschema)
4098 : {
4099 : TypeName *typename;
4100 : Oid typeOid;
4101 : Oid nspOid;
4102 : Oid oldNspOid;
4103 : ObjectAddresses *objsMoved;
4104 : ObjectAddress myself;
4105 :
4106 : /* Make a TypeName so we can use standard type lookup machinery */
4107 9 : typename = makeTypeNameFromNameList(names);
4108 9 : typeOid = typenameTypeId(NULL, typename);
4109 :
4110 : /* Don't allow ALTER DOMAIN on a non-domain type */
4111 9 : if (objecttype == OBJECT_DOMAIN && get_typtype(typeOid) != TYPTYPE_DOMAIN)
4112 0 : ereport(ERROR,
4113 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4114 : errmsg("%s is not a domain",
4115 : format_type_be(typeOid))));
4116 :
4117 : /* get schema OID and check its permissions */
4118 9 : nspOid = LookupCreationNamespace(newschema);
4119 :
4120 9 : objsMoved = new_object_addresses();
4121 9 : oldNspOid = AlterTypeNamespace_oid(typeOid, nspOid, false, objsMoved);
4122 9 : free_object_addresses(objsMoved);
4123 :
4124 9 : if (oldschema)
4125 9 : *oldschema = oldNspOid;
4126 :
4127 9 : ObjectAddressSet(myself, TypeRelationId, typeOid);
4128 :
4129 9 : return myself;
4130 : }
4131 :
4132 : /*
4133 : * ALTER TYPE SET SCHEMA, where the caller has already looked up the OIDs
4134 : * of the type and the target schema and checked the schema's privileges.
4135 : *
4136 : * If ignoreDependent is true, we silently ignore dependent types
4137 : * (array types and table rowtypes) rather than raising errors.
4138 : *
4139 : * This entry point is exported for use by AlterObjectNamespace_oid,
4140 : * which doesn't want errors when it passes OIDs of dependent types.
4141 : *
4142 : * Returns the type's old namespace OID, or InvalidOid if we did nothing.
4143 : */
4144 : Oid
4145 17 : AlterTypeNamespace_oid(Oid typeOid, Oid nspOid, bool ignoreDependent,
4146 : ObjectAddresses *objsMoved)
4147 : {
4148 : Oid elemOid;
4149 :
4150 : /* check permissions on type */
4151 17 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
4152 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
4153 :
4154 : /* don't allow direct alteration of array types */
4155 17 : elemOid = get_element_type(typeOid);
4156 17 : if (OidIsValid(elemOid) && get_array_type(elemOid) == typeOid)
4157 : {
4158 4 : if (ignoreDependent)
4159 4 : return InvalidOid;
4160 0 : ereport(ERROR,
4161 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4162 : errmsg("cannot alter array type %s",
4163 : format_type_be(typeOid)),
4164 : errhint("You can alter type %s, which will alter the array type as well.",
4165 : format_type_be(elemOid))));
4166 : }
4167 :
4168 : /* and do the work */
4169 13 : return AlterTypeNamespaceInternal(typeOid, nspOid,
4170 : false, /* isImplicitArray */
4171 : ignoreDependent, /* ignoreDependent */
4172 : true, /* errorOnTableType */
4173 : objsMoved);
4174 : }
4175 :
4176 : /*
4177 : * Move specified type to new namespace.
4178 : *
4179 : * Caller must have already checked privileges.
4180 : *
4181 : * The function automatically recurses to process the type's array type,
4182 : * if any. isImplicitArray should be true only when doing this internal
4183 : * recursion (outside callers must never try to move an array type directly).
4184 : *
4185 : * If ignoreDependent is true, we silently don't process table types.
4186 : *
4187 : * If errorOnTableType is true, the function errors out if the type is
4188 : * a table type. ALTER TABLE has to be used to move a table to a new
4189 : * namespace. (This flag is ignored if ignoreDependent is true.)
4190 : *
4191 : * We also do nothing if the type is already listed in *objsMoved.
4192 : * After a successful move, we add the type to *objsMoved.
4193 : *
4194 : * Returns the type's old namespace OID, or InvalidOid if we did nothing.
4195 : */
4196 : Oid
4197 109 : AlterTypeNamespaceInternal(Oid typeOid, Oid nspOid,
4198 : bool isImplicitArray,
4199 : bool ignoreDependent,
4200 : bool errorOnTableType,
4201 : ObjectAddresses *objsMoved)
4202 : {
4203 : Relation rel;
4204 : HeapTuple tup;
4205 : Form_pg_type typform;
4206 : Oid oldNspOid;
4207 : Oid arrayOid;
4208 : bool isCompositeType;
4209 : ObjectAddress thisobj;
4210 :
4211 : /*
4212 : * Make sure we haven't moved this object previously.
4213 : */
4214 109 : thisobj.classId = TypeRelationId;
4215 109 : thisobj.objectId = typeOid;
4216 109 : thisobj.objectSubId = 0;
4217 :
4218 109 : if (object_address_present(&thisobj, objsMoved))
4219 0 : return InvalidOid;
4220 :
4221 109 : rel = table_open(TypeRelationId, RowExclusiveLock);
4222 :
4223 109 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
4224 109 : if (!HeapTupleIsValid(tup))
4225 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
4226 109 : typform = (Form_pg_type) GETSTRUCT(tup);
4227 :
4228 109 : oldNspOid = typform->typnamespace;
4229 109 : arrayOid = typform->typarray;
4230 :
4231 : /* If the type is already there, we scan skip these next few checks. */
4232 109 : if (oldNspOid != nspOid)
4233 : {
4234 : /* common checks on switching namespaces */
4235 91 : CheckSetNamespace(oldNspOid, nspOid);
4236 :
4237 : /* check for duplicate name (more friendly than unique-index failure) */
4238 91 : if (SearchSysCacheExists2(TYPENAMENSP,
4239 : NameGetDatum(&typform->typname),
4240 : ObjectIdGetDatum(nspOid)))
4241 0 : ereport(ERROR,
4242 : (errcode(ERRCODE_DUPLICATE_OBJECT),
4243 : errmsg("type \"%s\" already exists in schema \"%s\"",
4244 : NameStr(typform->typname),
4245 : get_namespace_name(nspOid))));
4246 : }
4247 :
4248 : /* Detect whether type is a composite type (but not a table rowtype) */
4249 109 : isCompositeType =
4250 159 : (typform->typtype == TYPTYPE_COMPOSITE &&
4251 50 : get_rel_relkind(typform->typrelid) == RELKIND_COMPOSITE_TYPE);
4252 :
4253 : /* Enforce not-table-type if requested */
4254 109 : if (typform->typtype == TYPTYPE_COMPOSITE && !isCompositeType)
4255 : {
4256 43 : if (ignoreDependent)
4257 : {
4258 1 : table_close(rel, RowExclusiveLock);
4259 1 : return InvalidOid;
4260 : }
4261 42 : if (errorOnTableType)
4262 0 : ereport(ERROR,
4263 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4264 : errmsg("%s is a table's row type",
4265 : format_type_be(typeOid)),
4266 : /* translator: %s is an SQL ALTER command */
4267 : errhint("Use %s instead.", "ALTER TABLE")));
4268 : }
4269 :
4270 108 : if (oldNspOid != nspOid)
4271 : {
4272 : /* OK, modify the pg_type row */
4273 :
4274 : /* tup is a copy, so we can scribble directly on it */
4275 90 : typform->typnamespace = nspOid;
4276 :
4277 90 : CatalogTupleUpdate(rel, &tup->t_self, tup);
4278 : }
4279 :
4280 : /*
4281 : * Composite types have pg_class entries.
4282 : *
4283 : * We need to modify the pg_class tuple as well to reflect the change of
4284 : * schema.
4285 : */
4286 108 : if (isCompositeType)
4287 : {
4288 : Relation classRel;
4289 :
4290 7 : classRel = table_open(RelationRelationId, RowExclusiveLock);
4291 :
4292 7 : AlterRelationNamespaceInternal(classRel, typform->typrelid,
4293 : oldNspOid, nspOid,
4294 : false, objsMoved);
4295 :
4296 7 : table_close(classRel, RowExclusiveLock);
4297 :
4298 : /*
4299 : * Check for constraints associated with the composite type (we don't
4300 : * currently support this, but probably will someday).
4301 : */
4302 7 : AlterConstraintNamespaces(typform->typrelid, oldNspOid,
4303 : nspOid, false, objsMoved);
4304 : }
4305 : else
4306 : {
4307 : /* If it's a domain, it might have constraints */
4308 101 : if (typform->typtype == TYPTYPE_DOMAIN)
4309 3 : AlterConstraintNamespaces(typeOid, oldNspOid, nspOid, true,
4310 : objsMoved);
4311 : }
4312 :
4313 : /*
4314 : * Update dependency on schema, if any --- a table rowtype has not got
4315 : * one, and neither does an implicit array.
4316 : */
4317 108 : if (oldNspOid != nspOid &&
4318 86 : (isCompositeType || typform->typtype != TYPTYPE_COMPOSITE) &&
4319 54 : !isImplicitArray)
4320 9 : if (changeDependencyFor(TypeRelationId, typeOid,
4321 : NamespaceRelationId, oldNspOid, nspOid) != 1)
4322 0 : elog(ERROR, "could not change schema dependency for type \"%s\"",
4323 : format_type_be(typeOid));
4324 :
4325 108 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4326 :
4327 108 : heap_freetuple(tup);
4328 :
4329 108 : table_close(rel, RowExclusiveLock);
4330 :
4331 108 : add_exact_object_address(&thisobj, objsMoved);
4332 :
4333 : /* Recursively alter the associated array type, if any */
4334 108 : if (OidIsValid(arrayOid))
4335 54 : AlterTypeNamespaceInternal(arrayOid, nspOid,
4336 : true, /* isImplicitArray */
4337 : false, /* ignoreDependent */
4338 : true, /* errorOnTableType */
4339 : objsMoved);
4340 :
4341 108 : return oldNspOid;
4342 : }
4343 :
4344 : /*
4345 : * AlterType
4346 : * ALTER TYPE <type> SET (option = ...)
4347 : *
4348 : * NOTE: the set of changes that can be allowed here is constrained by many
4349 : * non-obvious implementation restrictions. Tread carefully when considering
4350 : * adding new flexibility.
4351 : */
4352 : ObjectAddress
4353 32 : AlterType(AlterTypeStmt *stmt)
4354 : {
4355 : ObjectAddress address;
4356 : Relation catalog;
4357 : TypeName *typename;
4358 : HeapTuple tup;
4359 : Oid typeOid;
4360 : Form_pg_type typForm;
4361 32 : bool requireSuper = false;
4362 : AlterTypeRecurseParams atparams;
4363 : ListCell *pl;
4364 :
4365 32 : catalog = table_open(TypeRelationId, RowExclusiveLock);
4366 :
4367 : /* Make a TypeName so we can use standard type lookup machinery */
4368 32 : typename = makeTypeNameFromNameList(stmt->typeName);
4369 32 : tup = typenameType(NULL, typename, NULL);
4370 :
4371 29 : typeOid = typeTypeId(tup);
4372 29 : typForm = (Form_pg_type) GETSTRUCT(tup);
4373 :
4374 : /* Process options */
4375 29 : memset(&atparams, 0, sizeof(atparams));
4376 81 : foreach(pl, stmt->options)
4377 : {
4378 55 : DefElem *defel = (DefElem *) lfirst(pl);
4379 :
4380 55 : if (strcmp(defel->defname, "storage") == 0)
4381 : {
4382 6 : char *a = defGetString(defel);
4383 :
4384 6 : if (pg_strcasecmp(a, "plain") == 0)
4385 3 : atparams.storage = TYPSTORAGE_PLAIN;
4386 3 : else if (pg_strcasecmp(a, "external") == 0)
4387 0 : atparams.storage = TYPSTORAGE_EXTERNAL;
4388 3 : else if (pg_strcasecmp(a, "extended") == 0)
4389 3 : atparams.storage = TYPSTORAGE_EXTENDED;
4390 0 : else if (pg_strcasecmp(a, "main") == 0)
4391 0 : atparams.storage = TYPSTORAGE_MAIN;
4392 : else
4393 0 : ereport(ERROR,
4394 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
4395 : errmsg("storage \"%s\" not recognized", a)));
4396 :
4397 : /*
4398 : * Validate the storage request. If the type isn't varlena, it
4399 : * certainly doesn't support non-PLAIN storage.
4400 : */
4401 6 : if (atparams.storage != TYPSTORAGE_PLAIN && typForm->typlen != -1)
4402 0 : ereport(ERROR,
4403 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
4404 : errmsg("fixed-size types must have storage PLAIN")));
4405 :
4406 : /*
4407 : * Switching from PLAIN to non-PLAIN is allowed, but it requires
4408 : * superuser, since we can't validate that the type's C functions
4409 : * will support it. Switching from non-PLAIN to PLAIN is
4410 : * disallowed outright, because it's not practical to ensure that
4411 : * no tables have toasted values of the type. Switching among
4412 : * different non-PLAIN settings is OK, since it just constitutes a
4413 : * change in the strategy requested for columns created in the
4414 : * future.
4415 : */
4416 6 : if (atparams.storage != TYPSTORAGE_PLAIN &&
4417 3 : typForm->typstorage == TYPSTORAGE_PLAIN)
4418 0 : requireSuper = true;
4419 6 : else if (atparams.storage == TYPSTORAGE_PLAIN &&
4420 3 : typForm->typstorage != TYPSTORAGE_PLAIN)
4421 3 : ereport(ERROR,
4422 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
4423 : errmsg("cannot change type's storage to PLAIN")));
4424 :
4425 3 : atparams.updateStorage = true;
4426 : }
4427 49 : else if (strcmp(defel->defname, "receive") == 0)
4428 : {
4429 14 : if (defel->arg != NULL)
4430 14 : atparams.receiveOid =
4431 14 : findTypeReceiveFunction(defGetQualifiedName(defel),
4432 : typeOid);
4433 : else
4434 0 : atparams.receiveOid = InvalidOid; /* NONE, remove function */
4435 14 : atparams.updateReceive = true;
4436 : /* Replacing an I/O function requires superuser. */
4437 14 : requireSuper = true;
4438 : }
4439 35 : else if (strcmp(defel->defname, "send") == 0)
4440 : {
4441 14 : if (defel->arg != NULL)
4442 14 : atparams.sendOid =
4443 14 : findTypeSendFunction(defGetQualifiedName(defel),
4444 : typeOid);
4445 : else
4446 0 : atparams.sendOid = InvalidOid; /* NONE, remove function */
4447 14 : atparams.updateSend = true;
4448 : /* Replacing an I/O function requires superuser. */
4449 14 : requireSuper = true;
4450 : }
4451 21 : else if (strcmp(defel->defname, "typmod_in") == 0)
4452 : {
4453 3 : if (defel->arg != NULL)
4454 3 : atparams.typmodinOid =
4455 3 : findTypeTypmodinFunction(defGetQualifiedName(defel));
4456 : else
4457 0 : atparams.typmodinOid = InvalidOid; /* NONE, remove function */
4458 3 : atparams.updateTypmodin = true;
4459 : /* Replacing an I/O function requires superuser. */
4460 3 : requireSuper = true;
4461 : }
4462 18 : else if (strcmp(defel->defname, "typmod_out") == 0)
4463 : {
4464 3 : if (defel->arg != NULL)
4465 3 : atparams.typmodoutOid =
4466 3 : findTypeTypmodoutFunction(defGetQualifiedName(defel));
4467 : else
4468 0 : atparams.typmodoutOid = InvalidOid; /* NONE, remove function */
4469 3 : atparams.updateTypmodout = true;
4470 : /* Replacing an I/O function requires superuser. */
4471 3 : requireSuper = true;
4472 : }
4473 15 : else if (strcmp(defel->defname, "analyze") == 0)
4474 : {
4475 5 : if (defel->arg != NULL)
4476 5 : atparams.analyzeOid =
4477 5 : findTypeAnalyzeFunction(defGetQualifiedName(defel),
4478 : typeOid);
4479 : else
4480 0 : atparams.analyzeOid = InvalidOid; /* NONE, remove function */
4481 5 : atparams.updateAnalyze = true;
4482 : /* Replacing an analyze function requires superuser. */
4483 5 : requireSuper = true;
4484 : }
4485 10 : else if (strcmp(defel->defname, "subscript") == 0)
4486 : {
4487 10 : if (defel->arg != NULL)
4488 10 : atparams.subscriptOid =
4489 10 : findTypeSubscriptingFunction(defGetQualifiedName(defel),
4490 : typeOid);
4491 : else
4492 0 : atparams.subscriptOid = InvalidOid; /* NONE, remove function */
4493 10 : atparams.updateSubscript = true;
4494 : /* Replacing a subscript function requires superuser. */
4495 10 : requireSuper = true;
4496 : }
4497 :
4498 : /*
4499 : * The rest of the options that CREATE accepts cannot be changed.
4500 : * Check for them so that we can give a meaningful error message.
4501 : */
4502 0 : else if (strcmp(defel->defname, "input") == 0 ||
4503 0 : strcmp(defel->defname, "output") == 0 ||
4504 0 : strcmp(defel->defname, "internallength") == 0 ||
4505 0 : strcmp(defel->defname, "passedbyvalue") == 0 ||
4506 0 : strcmp(defel->defname, "alignment") == 0 ||
4507 0 : strcmp(defel->defname, "like") == 0 ||
4508 0 : strcmp(defel->defname, "category") == 0 ||
4509 0 : strcmp(defel->defname, "preferred") == 0 ||
4510 0 : strcmp(defel->defname, "default") == 0 ||
4511 0 : strcmp(defel->defname, "element") == 0 ||
4512 0 : strcmp(defel->defname, "delimiter") == 0 ||
4513 0 : strcmp(defel->defname, "collatable") == 0)
4514 0 : ereport(ERROR,
4515 : (errcode(ERRCODE_SYNTAX_ERROR),
4516 : errmsg("type attribute \"%s\" cannot be changed",
4517 : defel->defname)));
4518 : else
4519 0 : ereport(ERROR,
4520 : (errcode(ERRCODE_SYNTAX_ERROR),
4521 : errmsg("type attribute \"%s\" not recognized",
4522 : defel->defname)));
4523 : }
4524 :
4525 : /*
4526 : * Permissions check. Require superuser if we decided the command
4527 : * requires that, else must own the type.
4528 : */
4529 26 : if (requireSuper)
4530 : {
4531 23 : if (!superuser())
4532 0 : ereport(ERROR,
4533 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
4534 : errmsg("must be superuser to alter a type")));
4535 : }
4536 : else
4537 : {
4538 3 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
4539 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
4540 : }
4541 :
4542 : /*
4543 : * We disallow all forms of ALTER TYPE SET on types that aren't plain base
4544 : * types. It would for example be highly unsafe, not to mention
4545 : * pointless, to change the send/receive functions for a composite type.
4546 : * Moreover, pg_dump has no support for changing these properties on
4547 : * non-base types. We might weaken this someday, but not now.
4548 : *
4549 : * Note: if you weaken this enough to allow composite types, be sure to
4550 : * adjust the GenerateTypeDependencies call in AlterTypeRecurse.
4551 : */
4552 26 : if (typForm->typtype != TYPTYPE_BASE)
4553 0 : ereport(ERROR,
4554 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4555 : errmsg("%s is not a base type",
4556 : format_type_be(typeOid))));
4557 :
4558 : /*
4559 : * For the same reasons, don't allow direct alteration of array types.
4560 : */
4561 26 : if (IsTrueArrayType(typForm))
4562 0 : ereport(ERROR,
4563 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4564 : errmsg("%s is not a base type",
4565 : format_type_be(typeOid))));
4566 :
4567 : /* OK, recursively update this type and any arrays/domains over it */
4568 26 : AlterTypeRecurse(typeOid, false, tup, catalog, &atparams);
4569 :
4570 : /* Clean up */
4571 26 : ReleaseSysCache(tup);
4572 :
4573 26 : table_close(catalog, RowExclusiveLock);
4574 :
4575 26 : ObjectAddressSet(address, TypeRelationId, typeOid);
4576 :
4577 26 : return address;
4578 : }
4579 :
4580 : /*
4581 : * AlterTypeRecurse: one recursion step for AlterType()
4582 : *
4583 : * Apply the changes specified by "atparams" to the type identified by
4584 : * "typeOid", whose existing pg_type tuple is "tup". If necessary,
4585 : * recursively update its array type as well. Then search for any domains
4586 : * over this type, and recursively apply (most of) the same changes to those
4587 : * domains.
4588 : *
4589 : * We need this because the system generally assumes that a domain inherits
4590 : * many properties from its base type. See DefineDomain() above for details
4591 : * of what is inherited. Arrays inherit a smaller number of properties,
4592 : * but not none.
4593 : *
4594 : * There's a race condition here, in that some other transaction could
4595 : * concurrently add another domain atop this base type; we'd miss updating
4596 : * that one. Hence, be wary of allowing ALTER TYPE to change properties for
4597 : * which it'd be really fatal for a domain to be out of sync with its base
4598 : * type (typlen, for example). In practice, races seem unlikely to be an
4599 : * issue for plausible use-cases for ALTER TYPE. If one does happen, it could
4600 : * be fixed by re-doing the same ALTER TYPE once all prior transactions have
4601 : * committed.
4602 : */
4603 : static void
4604 35 : AlterTypeRecurse(Oid typeOid, bool isImplicitArray,
4605 : HeapTuple tup, Relation catalog,
4606 : AlterTypeRecurseParams *atparams)
4607 : {
4608 : Datum values[Natts_pg_type];
4609 : bool nulls[Natts_pg_type];
4610 : bool replaces[Natts_pg_type];
4611 : HeapTuple newtup;
4612 : SysScanDesc scan;
4613 : ScanKeyData key[1];
4614 : HeapTuple domainTup;
4615 :
4616 : /* Since this function recurses, it could be driven to stack overflow */
4617 35 : check_stack_depth();
4618 :
4619 : /* Update the current type's tuple */
4620 35 : memset(values, 0, sizeof(values));
4621 35 : memset(nulls, 0, sizeof(nulls));
4622 35 : memset(replaces, 0, sizeof(replaces));
4623 :
4624 35 : if (atparams->updateStorage)
4625 : {
4626 6 : replaces[Anum_pg_type_typstorage - 1] = true;
4627 6 : values[Anum_pg_type_typstorage - 1] = CharGetDatum(atparams->storage);
4628 : }
4629 35 : if (atparams->updateReceive)
4630 : {
4631 14 : replaces[Anum_pg_type_typreceive - 1] = true;
4632 14 : values[Anum_pg_type_typreceive - 1] = ObjectIdGetDatum(atparams->receiveOid);
4633 : }
4634 35 : if (atparams->updateSend)
4635 : {
4636 17 : replaces[Anum_pg_type_typsend - 1] = true;
4637 17 : values[Anum_pg_type_typsend - 1] = ObjectIdGetDatum(atparams->sendOid);
4638 : }
4639 35 : if (atparams->updateTypmodin)
4640 : {
4641 6 : replaces[Anum_pg_type_typmodin - 1] = true;
4642 6 : values[Anum_pg_type_typmodin - 1] = ObjectIdGetDatum(atparams->typmodinOid);
4643 : }
4644 35 : if (atparams->updateTypmodout)
4645 : {
4646 6 : replaces[Anum_pg_type_typmodout - 1] = true;
4647 6 : values[Anum_pg_type_typmodout - 1] = ObjectIdGetDatum(atparams->typmodoutOid);
4648 : }
4649 35 : if (atparams->updateAnalyze)
4650 : {
4651 8 : replaces[Anum_pg_type_typanalyze - 1] = true;
4652 8 : values[Anum_pg_type_typanalyze - 1] = ObjectIdGetDatum(atparams->analyzeOid);
4653 : }
4654 35 : if (atparams->updateSubscript)
4655 : {
4656 10 : replaces[Anum_pg_type_typsubscript - 1] = true;
4657 10 : values[Anum_pg_type_typsubscript - 1] = ObjectIdGetDatum(atparams->subscriptOid);
4658 : }
4659 :
4660 35 : newtup = heap_modify_tuple(tup, RelationGetDescr(catalog),
4661 : values, nulls, replaces);
4662 :
4663 35 : CatalogTupleUpdate(catalog, &newtup->t_self, newtup);
4664 :
4665 : /* Rebuild dependencies for this type */
4666 35 : GenerateTypeDependencies(newtup,
4667 : catalog,
4668 : NULL, /* don't have defaultExpr handy */
4669 : NULL, /* don't have typacl handy */
4670 : 0, /* we rejected composite types above */
4671 : isImplicitArray, /* it might be an array */
4672 : isImplicitArray, /* dependent iff it's array */
4673 : false, /* don't touch extension membership */
4674 : true);
4675 :
4676 35 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4677 :
4678 : /*
4679 : * Arrays inherit their base type's typmodin and typmodout, but none of
4680 : * the other properties we're concerned with here. Recurse to the array
4681 : * type if needed.
4682 : */
4683 35 : if (!isImplicitArray &&
4684 32 : (atparams->updateTypmodin || atparams->updateTypmodout))
4685 : {
4686 3 : Oid arrtypoid = ((Form_pg_type) GETSTRUCT(newtup))->typarray;
4687 :
4688 3 : if (OidIsValid(arrtypoid))
4689 : {
4690 : HeapTuple arrtup;
4691 : AlterTypeRecurseParams arrparams;
4692 :
4693 3 : arrtup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(arrtypoid));
4694 3 : if (!HeapTupleIsValid(arrtup))
4695 0 : elog(ERROR, "cache lookup failed for type %u", arrtypoid);
4696 :
4697 3 : memset(&arrparams, 0, sizeof(arrparams));
4698 3 : arrparams.updateTypmodin = atparams->updateTypmodin;
4699 3 : arrparams.updateTypmodout = atparams->updateTypmodout;
4700 3 : arrparams.typmodinOid = atparams->typmodinOid;
4701 3 : arrparams.typmodoutOid = atparams->typmodoutOid;
4702 :
4703 3 : AlterTypeRecurse(arrtypoid, true, arrtup, catalog, &arrparams);
4704 :
4705 3 : ReleaseSysCache(arrtup);
4706 : }
4707 : }
4708 :
4709 : /*
4710 : * Now we need to recurse to domains. However, some properties are not
4711 : * inherited by domains, so clear the update flags for those.
4712 : */
4713 35 : atparams->updateReceive = false; /* domains use F_DOMAIN_RECV */
4714 35 : atparams->updateTypmodin = false; /* domains don't have typmods */
4715 35 : atparams->updateTypmodout = false;
4716 35 : atparams->updateSubscript = false; /* domains don't have subscriptors */
4717 :
4718 : /* Skip the scan if nothing remains to be done */
4719 35 : if (!(atparams->updateStorage ||
4720 29 : atparams->updateSend ||
4721 12 : atparams->updateAnalyze))
4722 10 : return;
4723 :
4724 : /* Search pg_type for possible domains over this type */
4725 25 : ScanKeyInit(&key[0],
4726 : Anum_pg_type_typbasetype,
4727 : BTEqualStrategyNumber, F_OIDEQ,
4728 : ObjectIdGetDatum(typeOid));
4729 :
4730 25 : scan = systable_beginscan(catalog, InvalidOid, false,
4731 : NULL, 1, key);
4732 :
4733 31 : while ((domainTup = systable_getnext(scan)) != NULL)
4734 : {
4735 6 : Form_pg_type domainForm = (Form_pg_type) GETSTRUCT(domainTup);
4736 :
4737 : /*
4738 : * Shouldn't have a nonzero typbasetype in a non-domain, but let's
4739 : * check
4740 : */
4741 6 : if (domainForm->typtype != TYPTYPE_DOMAIN)
4742 0 : continue;
4743 :
4744 6 : AlterTypeRecurse(domainForm->oid, false, domainTup, catalog, atparams);
4745 : }
4746 :
4747 25 : systable_endscan(scan);
4748 : }
|
