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
154 239 : DefineType(ParseState *pstate, List *names, List *parameters)
155 : {
156 : char *typeName;
157 : Oid typeNamespace;
158 239 : int16 internalLength = -1; /* default: variable-length */
159 239 : List *inputName = NIL;
160 239 : List *outputName = NIL;
161 239 : List *receiveName = NIL;
162 239 : List *sendName = NIL;
163 239 : List *typmodinName = NIL;
164 239 : List *typmodoutName = NIL;
165 239 : List *analyzeName = NIL;
166 239 : List *subscriptName = NIL;
167 239 : char category = TYPCATEGORY_USER;
168 239 : bool preferred = false;
169 239 : char delimiter = DEFAULT_TYPDELIM;
170 239 : Oid elemType = InvalidOid;
171 239 : char *defaultValue = NULL;
172 239 : bool byValue = false;
173 239 : char alignment = TYPALIGN_INT; /* default alignment */
174 239 : char storage = TYPSTORAGE_PLAIN; /* default TOAST storage method */
175 239 : Oid collation = InvalidOid;
176 239 : DefElem *likeTypeEl = NULL;
177 239 : DefElem *internalLengthEl = NULL;
178 239 : DefElem *inputNameEl = NULL;
179 239 : DefElem *outputNameEl = NULL;
180 239 : DefElem *receiveNameEl = NULL;
181 239 : DefElem *sendNameEl = NULL;
182 239 : DefElem *typmodinNameEl = NULL;
183 239 : DefElem *typmodoutNameEl = NULL;
184 239 : DefElem *analyzeNameEl = NULL;
185 239 : DefElem *subscriptNameEl = NULL;
186 239 : DefElem *categoryEl = NULL;
187 239 : DefElem *preferredEl = NULL;
188 239 : DefElem *delimiterEl = NULL;
189 239 : DefElem *elemTypeEl = NULL;
190 239 : DefElem *defaultValueEl = NULL;
191 239 : DefElem *byValueEl = NULL;
192 239 : DefElem *alignmentEl = NULL;
193 239 : DefElem *storageEl = NULL;
194 239 : DefElem *collatableEl = NULL;
195 : Oid inputOid;
196 : Oid outputOid;
197 239 : Oid receiveOid = InvalidOid;
198 239 : Oid sendOid = InvalidOid;
199 239 : Oid typmodinOid = InvalidOid;
200 239 : Oid typmodoutOid = InvalidOid;
201 239 : Oid analyzeOid = InvalidOid;
202 239 : 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 : */
220 239 : 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 */
226 239 : 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 : */
240 239 : 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 : */
248 239 : if (OidIsValid(typoid) && get_typisdefined(typoid))
249 : {
250 4 : if (moveArrayTypeName(typoid, typeName, typeNamespace))
251 0 : typoid = InvalidOid;
252 : else
253 4 : 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 : */
262 235 : if (parameters == NIL)
263 : {
264 94 : if (OidIsValid(typoid))
265 4 : ereport(ERROR,
266 : (errcode(ERRCODE_DUPLICATE_OBJECT),
267 : errmsg("type \"%s\" already exists", typeName)));
268 :
269 90 : address = TypeShellMake(typeName, typeNamespace, GetUserId());
270 90 : 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 : */
277 141 : if (!OidIsValid(typoid))
278 4 : 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 */
284 687 : foreach(pl, parameters)
285 : {
286 550 : DefElem *defel = (DefElem *) lfirst(pl);
287 : DefElem **defelp;
288 :
289 550 : if (strcmp(defel->defname, "like") == 0)
290 39 : defelp = &likeTypeEl;
291 511 : else if (strcmp(defel->defname, "internallength") == 0)
292 84 : defelp = &internalLengthEl;
293 427 : else if (strcmp(defel->defname, "input") == 0)
294 133 : defelp = &inputNameEl;
295 294 : else if (strcmp(defel->defname, "output") == 0)
296 133 : defelp = &outputNameEl;
297 161 : else if (strcmp(defel->defname, "receive") == 0)
298 9 : defelp = &receiveNameEl;
299 152 : else if (strcmp(defel->defname, "send") == 0)
300 9 : defelp = &sendNameEl;
301 143 : else if (strcmp(defel->defname, "typmod_in") == 0)
302 5 : defelp = &typmodinNameEl;
303 138 : else if (strcmp(defel->defname, "typmod_out") == 0)
304 5 : defelp = &typmodoutNameEl;
305 133 : else if (strcmp(defel->defname, "analyze") == 0 ||
306 133 : strcmp(defel->defname, "analyse") == 0)
307 0 : defelp = &analyzeNameEl;
308 133 : else if (strcmp(defel->defname, "subscript") == 0)
309 1 : defelp = &subscriptNameEl;
310 132 : else if (strcmp(defel->defname, "category") == 0)
311 7 : defelp = &categoryEl;
312 125 : else if (strcmp(defel->defname, "preferred") == 0)
313 7 : defelp = &preferredEl;
314 118 : else if (strcmp(defel->defname, "delimiter") == 0)
315 0 : defelp = &delimiterEl;
316 118 : else if (strcmp(defel->defname, "element") == 0)
317 9 : defelp = &elemTypeEl;
318 109 : else if (strcmp(defel->defname, "default") == 0)
319 11 : defelp = &defaultValueEl;
320 98 : else if (strcmp(defel->defname, "passedbyvalue") == 0)
321 8 : defelp = &byValueEl;
322 90 : else if (strcmp(defel->defname, "alignment") == 0)
323 33 : defelp = &alignmentEl;
324 57 : else if (strcmp(defel->defname, "storage") == 0)
325 31 : defelp = &storageEl;
326 26 : else if (strcmp(defel->defname, "collatable") == 0)
327 2 : defelp = &collatableEl;
328 : else
329 : {
330 : /* WARNING, not ERROR, for historical backwards-compatibility */
331 24 : ereport(WARNING,
332 : (errcode(ERRCODE_SYNTAX_ERROR),
333 : errmsg("type attribute \"%s\" not recognized",
334 : defel->defname),
335 : parser_errposition(pstate, defel->location)));
336 24 : continue;
337 : }
338 526 : if (*defelp != NULL)
339 0 : errorConflictingDefElem(defel, pstate);
340 526 : *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 : */
348 137 : if (likeTypeEl)
349 : {
350 : Type likeType;
351 : Form_pg_type likeForm;
352 :
353 39 : likeType = typenameType(pstate, defGetTypeName(likeTypeEl), NULL);
354 35 : likeForm = (Form_pg_type) GETSTRUCT(likeType);
355 35 : internalLength = likeForm->typlen;
356 35 : byValue = likeForm->typbyval;
357 35 : alignment = likeForm->typalign;
358 35 : storage = likeForm->typstorage;
359 35 : ReleaseSysCache(likeType);
360 : }
361 133 : if (internalLengthEl)
362 84 : internalLength = defGetTypeLength(internalLengthEl);
363 133 : if (inputNameEl)
364 129 : inputName = defGetQualifiedName(inputNameEl);
365 133 : if (outputNameEl)
366 129 : outputName = defGetQualifiedName(outputNameEl);
367 133 : if (receiveNameEl)
368 9 : receiveName = defGetQualifiedName(receiveNameEl);
369 133 : if (sendNameEl)
370 9 : sendName = defGetQualifiedName(sendNameEl);
371 133 : if (typmodinNameEl)
372 5 : typmodinName = defGetQualifiedName(typmodinNameEl);
373 133 : if (typmodoutNameEl)
374 5 : typmodoutName = defGetQualifiedName(typmodoutNameEl);
375 133 : if (analyzeNameEl)
376 0 : analyzeName = defGetQualifiedName(analyzeNameEl);
377 133 : if (subscriptNameEl)
378 1 : subscriptName = defGetQualifiedName(subscriptNameEl);
379 133 : if (categoryEl)
380 : {
381 7 : char *p = defGetString(categoryEl);
382 :
383 7 : category = p[0];
384 : /* restrict to non-control ASCII */
385 7 : 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 : }
391 133 : if (preferredEl)
392 7 : preferred = defGetBoolean(preferredEl);
393 133 : if (delimiterEl)
394 : {
395 0 : char *p = defGetString(delimiterEl);
396 :
397 0 : delimiter = p[0];
398 : /* XXX shouldn't we restrict the delimiter? */
399 : }
400 133 : if (elemTypeEl)
401 : {
402 9 : elemType = typenameTypeId(NULL, defGetTypeName(elemTypeEl));
403 : /* disallow arrays of pseudotypes */
404 9 : 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 : }
410 133 : if (defaultValueEl)
411 11 : defaultValue = defGetString(defaultValueEl);
412 133 : if (byValueEl)
413 8 : byValue = defGetBoolean(byValueEl);
414 133 : if (alignmentEl)
415 : {
416 33 : 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 56 : if (pg_strcasecmp(a, "double") == 0 ||
424 46 : pg_strcasecmp(a, "float8") == 0 ||
425 23 : pg_strcasecmp(a, "pg_catalog.float8") == 0)
426 10 : alignment = TYPALIGN_DOUBLE;
427 27 : else if (pg_strcasecmp(a, "int4") == 0 ||
428 4 : pg_strcasecmp(a, "pg_catalog.int4") == 0)
429 23 : 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 : }
441 133 : if (storageEl)
442 : {
443 31 : char *a = defGetString(storageEl);
444 :
445 31 : if (pg_strcasecmp(a, "plain") == 0)
446 9 : storage = TYPSTORAGE_PLAIN;
447 22 : else if (pg_strcasecmp(a, "external") == 0)
448 0 : storage = TYPSTORAGE_EXTERNAL;
449 22 : else if (pg_strcasecmp(a, "extended") == 0)
450 18 : storage = TYPSTORAGE_EXTENDED;
451 4 : else if (pg_strcasecmp(a, "main") == 0)
452 4 : storage = TYPSTORAGE_MAIN;
453 : else
454 0 : ereport(ERROR,
455 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
456 : errmsg("storage \"%s\" not recognized", a)));
457 : }
458 133 : if (collatableEl)
459 2 : collation = defGetBoolean(collatableEl) ? DEFAULT_COLLATION_OID : InvalidOid;
460 :
461 : /*
462 : * make sure we have our required definitions
463 : */
464 133 : if (inputName == NIL)
465 4 : ereport(ERROR,
466 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
467 : errmsg("type input function must be specified")));
468 129 : if (outputName == NIL)
469 0 : ereport(ERROR,
470 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
471 : errmsg("type output function must be specified")));
472 :
473 129 : 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 : */
481 129 : inputOid = findTypeInputFunction(inputName, typoid);
482 125 : outputOid = findTypeOutputFunction(outputName, typoid);
483 125 : if (receiveName)
484 9 : receiveOid = findTypeReceiveFunction(receiveName, typoid);
485 125 : if (sendName)
486 9 : sendOid = findTypeSendFunction(sendName, typoid);
487 :
488 : /*
489 : * Convert typmodin/out function proc names to OIDs.
490 : */
491 125 : if (typmodinName)
492 5 : typmodinOid = findTypeTypmodinFunction(typmodinName);
493 125 : if (typmodoutName)
494 5 : 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 : */
500 125 : 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 : */
509 125 : if (subscriptName)
510 1 : subscriptOid = findTypeSubscriptingFunction(subscriptName, typoid);
511 124 : else if (OidIsValid(elemType))
512 : {
513 4 : if (internalLength > 0 && !byValue && get_typlen(elemType) > 0)
514 4 : 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 : */
565 125 : 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 =
575 125 : 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 : */
612 125 : array_type = makeArrayTypeName(typeName, typeNamespace);
613 :
614 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for arrays */
615 125 : alignment = (alignment == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
616 :
617 125 : 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 :
650 125 : pfree(array_type);
651 :
652 125 : return address;
653 : }
654 :
655 : /*
656 : * Guts of type deletion.
657 : */
658 : void
659 53620 : RemoveTypeById(Oid typeOid)
660 : {
661 : Relation relation;
662 : HeapTuple tup;
663 :
664 53620 : relation = table_open(TypeRelationId, RowExclusiveLock);
665 :
666 53620 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typeOid));
667 53620 : if (!HeapTupleIsValid(tup))
668 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
669 :
670 53620 : 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 53620 : if (((Form_pg_type) GETSTRUCT(tup))->typtype == TYPTYPE_ENUM)
678 179 : 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 53620 : if (((Form_pg_type) GETSTRUCT(tup))->typtype == TYPTYPE_RANGE)
686 91 : RangeDelete(typeOid);
687 :
688 53620 : ReleaseSysCache(tup);
689 :
690 53620 : table_close(relation, RowExclusiveLock);
691 53620 : }
692 :
693 :
694 : /*
695 : * DefineDomain
696 : * Registers a new domain.
697 : */
698 : ObjectAddress
699 993 : 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;
719 993 : char *defaultValue = NULL;
720 993 : char *defaultValueBin = NULL;
721 993 : bool saw_default = false;
722 993 : bool typNotNull = false;
723 993 : bool nullDefined = false;
724 993 : int32 typNDims = list_length(stmt->typeName->arrayBounds);
725 : HeapTuple typeTup;
726 993 : 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 */
738 993 : domainNamespace = QualifiedNameGetCreationNamespace(stmt->domainname,
739 : &domainName);
740 :
741 : /* Check we have creation rights in target namespace */
742 993 : aclresult = object_aclcheck(NamespaceRelationId, domainNamespace, GetUserId(),
743 : ACL_CREATE);
744 993 : 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 : */
752 993 : old_type_oid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
753 : CStringGetDatum(domainName),
754 : ObjectIdGetDatum(domainNamespace));
755 993 : 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 : */
766 993 : typeTup = typenameType(pstate, stmt->typeName, &basetypeMod);
767 989 : baseType = (Form_pg_type) GETSTRUCT(typeTup);
768 989 : 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 : */
778 989 : typtype = baseType->typtype;
779 989 : if (typtype != TYPTYPE_BASE &&
780 69 : typtype != TYPTYPE_COMPOSITE &&
781 36 : typtype != TYPTYPE_DOMAIN &&
782 27 : typtype != TYPTYPE_ENUM &&
783 13 : typtype != TYPTYPE_RANGE &&
784 : typtype != TYPTYPE_MULTIRANGE)
785 4 : 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 :
791 985 : aclresult = object_aclcheck(TypeRelationId, basetypeoid, GetUserId(), ACL_USAGE);
792 985 : if (aclresult != ACLCHECK_OK)
793 4 : 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 : */
804 981 : baseColl = baseType->typcollation;
805 981 : if (stmt->collClause)
806 143 : domaincoll = get_collation_oid(stmt->collClause->collname, false);
807 : else
808 838 : domaincoll = baseColl;
809 :
810 : /* Complain if COLLATE is applied to an uncollatable type */
811 981 : if (OidIsValid(domaincoll) && !OidIsValid(baseColl))
812 12 : 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 */
819 969 : byValue = baseType->typbyval;
820 :
821 : /* Required Alignment */
822 969 : alignment = baseType->typalign;
823 :
824 : /* TOAST Strategy */
825 969 : storage = baseType->typstorage;
826 :
827 : /* Storage Length */
828 969 : internalLength = baseType->typlen;
829 :
830 : /* Type Category */
831 969 : category = baseType->typcategory;
832 :
833 : /* Array element Delimiter */
834 969 : delimiter = baseType->typdelim;
835 :
836 : /* I/O Functions */
837 969 : inputProcedure = F_DOMAIN_IN;
838 969 : outputProcedure = baseType->typoutput;
839 969 : receiveProcedure = F_DOMAIN_RECV;
840 969 : sendProcedure = baseType->typsend;
841 :
842 : /* Domains never accept typmods, so no typmodin/typmodout needed */
843 :
844 : /* Analysis function */
845 969 : 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 */
854 969 : datum = SysCacheGetAttr(TYPEOID, typeTup,
855 : Anum_pg_type_typdefault, &isnull);
856 969 : if (!isnull)
857 0 : defaultValue = TextDatumGetCString(datum);
858 :
859 : /* Inherited default binary value */
860 969 : datum = SysCacheGetAttr(TYPEOID, typeTup,
861 : Anum_pg_type_typdefaultbin, &isnull);
862 969 : 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 1570 : foreach(listptr, schema)
870 : {
871 653 : Constraint *constr = lfirst(listptr);
872 :
873 653 : if (!IsA(constr, Constraint))
874 0 : elog(ERROR, "unrecognized node type: %d",
875 : (int) nodeTag(constr));
876 653 : switch (constr->contype)
877 : {
878 118 : 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 : */
884 118 : if (saw_default)
885 4 : ereport(ERROR,
886 : errcode(ERRCODE_SYNTAX_ERROR),
887 : errmsg("multiple default expressions"),
888 : parser_errposition(pstate, constr->location));
889 114 : saw_default = true;
890 :
891 114 : 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 : */
899 114 : 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 : */
915 110 : if (defaultExpr == NULL ||
916 110 : (IsA(defaultExpr, Const) &&
917 27 : ((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 =
930 110 : deparse_expression(defaultExpr,
931 : NIL, false, false);
932 110 : defaultValueBin = nodeToString(defaultExpr);
933 : }
934 : }
935 : else
936 : {
937 : /* No default (can this still happen?) */
938 0 : defaultValue = NULL;
939 0 : defaultValueBin = NULL;
940 : }
941 110 : break;
942 :
943 80 : case CONSTR_NOTNULL:
944 80 : if (nullDefined)
945 : {
946 4 : 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 4 : ereport(ERROR,
953 : errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
954 : errmsg("redundant NOT NULL constraint definition"),
955 : parser_errposition(pstate, constr->location));
956 : }
957 76 : if (constr->is_no_inherit)
958 4 : 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 72 : typNotNull = true;
963 72 : nullDefined = true;
964 72 : break;
965 :
966 4 : case CONSTR_NULL:
967 4 : if (nullDefined && typNotNull)
968 4 : 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 :
976 423 : 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 : */
984 423 : if (constr->is_no_inherit)
985 4 : 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 :
990 419 : break;
991 :
992 : /*
993 : * All else are error cases
994 : */
995 4 : case CONSTR_UNIQUE:
996 4 : 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 4 : case CONSTR_PRIMARY:
1003 4 : 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 4 : case CONSTR_FOREIGN:
1017 4 : 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 4 : case CONSTR_ATTR_DEFERRABLE:
1024 : case CONSTR_ATTR_NOT_DEFERRABLE:
1025 : case CONSTR_ATTR_DEFERRED:
1026 : case CONSTR_ATTR_IMMEDIATE:
1027 4 : 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 4 : case CONSTR_GENERATED:
1034 : case CONSTR_IDENTITY:
1035 4 : 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 8 : case CONSTR_ATTR_ENFORCED:
1042 : case CONSTR_ATTR_NOT_ENFORCED:
1043 8 : 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 917 : domainArrayOid = AssignTypeArrayOid();
1055 :
1056 : /*
1057 : * Have TypeCreate do all the real work.
1058 : */
1059 : address =
1060 917 : 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 917 : domainArrayName = makeArrayTypeName(domainName, domainNamespace);
1097 :
1098 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for arrays */
1099 917 : alignment = (alignment == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
1100 :
1101 917 : 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 917 : pfree(domainArrayName);
1135 :
1136 : /*
1137 : * Process constraints which refer to the domain ID returned by TypeCreate
1138 : */
1139 1490 : foreach(listptr, schema)
1140 : {
1141 573 : Constraint *constr = lfirst(listptr);
1142 :
1143 : /* it must be a Constraint, per check above */
1144 :
1145 573 : switch (constr->contype)
1146 : {
1147 407 : case CONSTR_CHECK:
1148 407 : domainAddCheckConstraint(address.objectId, domainNamespace,
1149 : basetypeoid, basetypeMod,
1150 : constr, domainName, NULL);
1151 407 : break;
1152 :
1153 60 : case CONSTR_NOTNULL:
1154 60 : domainAddNotNullConstraint(address.objectId, domainNamespace,
1155 : basetypeoid, basetypeMod,
1156 : constr, domainName, NULL);
1157 60 : break;
1158 :
1159 : /* Other constraint types were fully processed above */
1160 :
1161 106 : default:
1162 106 : break;
1163 : }
1164 :
1165 : /* CCI so we can detect duplicate constraint names */
1166 573 : CommandCounterIncrement();
1167 : }
1168 :
1169 : /*
1170 : * Now we can clean up.
1171 : */
1172 917 : ReleaseSysCache(typeTup);
1173 :
1174 917 : return address;
1175 : }
1176 :
1177 :
1178 : /*
1179 : * DefineEnum
1180 : * Registers a new enum.
1181 : */
1182 : ObjectAddress
1183 251 : 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 251 : enumNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
1195 : &enumName);
1196 :
1197 : /* Check we have creation rights in target namespace */
1198 251 : aclresult = object_aclcheck(NamespaceRelationId, enumNamespace, GetUserId(), ACL_CREATE);
1199 251 : 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 251 : old_type_oid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
1208 : CStringGetDatum(enumName),
1209 : ObjectIdGetDatum(enumNamespace));
1210 251 : if (OidIsValid(old_type_oid))
1211 : {
1212 5 : 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 251 : enumArrayOid = AssignTypeArrayOid();
1220 :
1221 : /* Create the pg_type entry */
1222 : enumTypeAddr =
1223 251 : 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 250 : EnumValuesCreate(enumTypeAddr.objectId, stmt->vals);
1258 :
1259 : /*
1260 : * Create the array type that goes with it.
1261 : */
1262 246 : enumArrayName = makeArrayTypeName(enumName, enumNamespace);
1263 :
1264 246 : 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 246 : pfree(enumArrayName);
1298 :
1299 246 : return enumTypeAddr;
1300 : }
1301 :
1302 : /*
1303 : * AlterEnum
1304 : * Adds a new label to an existing enum.
1305 : */
1306 : ObjectAddress
1307 246 : 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 246 : typename = makeTypeNameFromNameList(stmt->typeName);
1316 246 : enum_type_oid = typenameTypeId(NULL, typename);
1317 :
1318 246 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(enum_type_oid));
1319 246 : 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 246 : checkEnumOwner(tup);
1324 :
1325 246 : ReleaseSysCache(tup);
1326 :
1327 246 : if (stmt->oldVal)
1328 : {
1329 : /* Rename an existing label */
1330 16 : RenameEnumLabel(enum_type_oid, stmt->oldVal, stmt->newVal);
1331 : }
1332 : else
1333 : {
1334 : /* Add a new label */
1335 230 : AddEnumLabel(enum_type_oid, stmt->newVal,
1336 230 : stmt->newValNeighbor, stmt->newValIsAfter,
1337 230 : stmt->skipIfNewValExists);
1338 : }
1339 :
1340 226 : InvokeObjectPostAlterHook(TypeRelationId, enum_type_oid, 0);
1341 :
1342 226 : ObjectAddressSet(address, TypeRelationId, enum_type_oid);
1343 :
1344 226 : 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 246 : checkEnumOwner(HeapTuple tup)
1356 : {
1357 246 : Form_pg_type typTup = (Form_pg_type) GETSTRUCT(tup);
1358 :
1359 : /* Check that this is actually an enum */
1360 246 : 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 246 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
1368 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
1369 246 : }
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 150 : DefineRange(ParseState *pstate, CreateRangeStmt *stmt)
1383 : {
1384 : char *typeName;
1385 : Oid typeNamespace;
1386 : Oid typoid;
1387 : char *rangeArrayName;
1388 150 : char *multirangeTypeName = NULL;
1389 : char *multirangeArrayName;
1390 150 : Oid multirangeNamespace = InvalidOid;
1391 : Oid rangeArrayOid;
1392 : Oid multirangeOid;
1393 : Oid multirangeArrayOid;
1394 150 : Oid rangeSubtype = InvalidOid;
1395 150 : List *rangeSubOpclassName = NIL;
1396 150 : List *rangeCollationName = NIL;
1397 150 : List *rangeCanonicalName = NIL;
1398 150 : 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 150 : Oid rangeConstruct2Oid = InvalidOid;
1412 150 : Oid rangeConstruct3Oid = InvalidOid;
1413 150 : Oid mltrngConstruct0Oid = InvalidOid;
1414 150 : Oid mltrngConstruct1Oid = InvalidOid;
1415 150 : Oid mltrngConstruct2Oid = InvalidOid;
1416 : Oid castFuncOid;
1417 :
1418 : /* Convert list of names to a name and namespace */
1419 150 : typeNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
1420 : &typeName);
1421 :
1422 : /* Check we have creation rights in target namespace */
1423 150 : aclresult = object_aclcheck(NamespaceRelationId, typeNamespace, GetUserId(), ACL_CREATE);
1424 150 : 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 150 : 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 150 : 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 392 : foreach(lc, stmt->params)
1456 : {
1457 246 : DefElem *defel = (DefElem *) lfirst(lc);
1458 :
1459 246 : if (strcmp(defel->defname, "subtype") == 0)
1460 : {
1461 150 : if (OidIsValid(rangeSubtype))
1462 0 : errorConflictingDefElem(defel, pstate);
1463 : /* we can look up the subtype name immediately */
1464 150 : rangeSubtype = typenameTypeId(NULL, defGetTypeName(defel));
1465 : }
1466 96 : else if (strcmp(defel->defname, "subtype_opclass") == 0)
1467 : {
1468 5 : if (rangeSubOpclassName != NIL)
1469 0 : errorConflictingDefElem(defel, pstate);
1470 5 : rangeSubOpclassName = defGetQualifiedName(defel);
1471 : }
1472 91 : else if (strcmp(defel->defname, "collation") == 0)
1473 : {
1474 46 : if (rangeCollationName != NIL)
1475 0 : errorConflictingDefElem(defel, pstate);
1476 46 : rangeCollationName = defGetQualifiedName(defel);
1477 : }
1478 45 : 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 45 : else if (strcmp(defel->defname, "subtype_diff") == 0)
1485 : {
1486 14 : if (rangeSubtypeDiffName != NIL)
1487 0 : errorConflictingDefElem(defel, pstate);
1488 14 : rangeSubtypeDiffName = defGetQualifiedName(defel);
1489 : }
1490 31 : else if (strcmp(defel->defname, "multirange_type_name") == 0)
1491 : {
1492 31 : if (multirangeTypeName != NULL)
1493 0 : errorConflictingDefElem(defel, pstate);
1494 : /* we can look up the subtype name immediately */
1495 31 : multirangeNamespace = QualifiedNameGetCreationNamespace(defGetQualifiedName(defel),
1496 : &multirangeTypeName);
1497 :
1498 : /* Check we have creation rights in target namespace */
1499 31 : aclresult = object_aclcheck(NamespaceRelationId, multirangeNamespace,
1500 : GetUserId(), ACL_CREATE);
1501 31 : if (aclresult != ACLCHECK_OK)
1502 4 : aclcheck_error(aclresult, OBJECT_SCHEMA,
1503 4 : get_namespace_name(multirangeNamespace));
1504 : }
1505 : else
1506 0 : ereport(ERROR,
1507 : (errcode(ERRCODE_SYNTAX_ERROR),
1508 : errmsg("type attribute \"%s\" not recognized",
1509 : defel->defname)));
1510 : }
1511 :
1512 : /* Must have a subtype */
1513 146 : if (!OidIsValid(rangeSubtype))
1514 0 : ereport(ERROR,
1515 : (errcode(ERRCODE_SYNTAX_ERROR),
1516 : errmsg("type attribute \"subtype\" is required")));
1517 : /* disallow ranges of pseudotypes */
1518 146 : if (get_typtype(rangeSubtype) == TYPTYPE_PSEUDO)
1519 0 : ereport(ERROR,
1520 : (errcode(ERRCODE_DATATYPE_MISMATCH),
1521 : errmsg("range subtype cannot be %s",
1522 : format_type_be(rangeSubtype))));
1523 :
1524 : /* Identify subopclass */
1525 146 : rangeSubOpclass = findRangeSubOpclass(rangeSubOpclassName, rangeSubtype);
1526 :
1527 : /* Identify collation to use, if any */
1528 146 : if (type_is_collatable(rangeSubtype))
1529 : {
1530 51 : if (rangeCollationName != NIL)
1531 46 : rangeCollation = get_collation_oid(rangeCollationName, false);
1532 : else
1533 5 : rangeCollation = get_typcollation(rangeSubtype);
1534 : }
1535 : else
1536 : {
1537 95 : if (rangeCollationName != NIL)
1538 0 : ereport(ERROR,
1539 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1540 : errmsg("range collation specified but subtype does not support collation")));
1541 95 : rangeCollation = InvalidOid;
1542 : }
1543 :
1544 : /* Identify support functions, if provided */
1545 146 : if (rangeCanonicalName != NIL)
1546 : {
1547 0 : if (!OidIsValid(typoid))
1548 0 : ereport(ERROR,
1549 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
1550 : errmsg("cannot specify a canonical function without a pre-created shell type"),
1551 : errhint("Create the type as a shell type, then create its canonicalization function, then do a full CREATE TYPE.")));
1552 0 : rangeCanonical = findRangeCanonicalFunction(rangeCanonicalName,
1553 : typoid);
1554 : }
1555 : else
1556 146 : rangeCanonical = InvalidOid;
1557 :
1558 146 : if (rangeSubtypeDiffName != NIL)
1559 14 : rangeSubtypeDiff = findRangeSubtypeDiffFunction(rangeSubtypeDiffName,
1560 : rangeSubtype);
1561 : else
1562 132 : rangeSubtypeDiff = InvalidOid;
1563 :
1564 142 : get_typlenbyvalalign(rangeSubtype,
1565 : &subtyplen, &subtypbyval, &subtypalign);
1566 :
1567 : /* alignment must be TYPALIGN_INT or TYPALIGN_DOUBLE for ranges */
1568 142 : alignment = (subtypalign == TYPALIGN_DOUBLE) ? TYPALIGN_DOUBLE : TYPALIGN_INT;
1569 :
1570 : /* Allocate OID for array type, its multirange, and its multirange array */
1571 142 : rangeArrayOid = AssignTypeArrayOid();
1572 142 : multirangeOid = AssignTypeMultirangeOid();
1573 142 : multirangeArrayOid = AssignTypeMultirangeArrayOid();
1574 :
1575 : /* Create the pg_type entry */
1576 : address =
1577 142 : TypeCreate(InvalidOid, /* no predetermined type OID */
1578 : typeName, /* type name */
1579 : typeNamespace, /* namespace */
1580 : InvalidOid, /* relation oid (n/a here) */
1581 : 0, /* relation kind (ditto) */
1582 : GetUserId(), /* owner's ID */
1583 : -1, /* internal size (always varlena) */
1584 : TYPTYPE_RANGE, /* type-type (range type) */
1585 : TYPCATEGORY_RANGE, /* type-category (range type) */
1586 : false, /* range types are never preferred */
1587 : DEFAULT_TYPDELIM, /* array element delimiter */
1588 : F_RANGE_IN, /* input procedure */
1589 : F_RANGE_OUT, /* output procedure */
1590 : F_RANGE_RECV, /* receive procedure */
1591 : F_RANGE_SEND, /* send procedure */
1592 : InvalidOid, /* typmodin procedure - none */
1593 : InvalidOid, /* typmodout procedure - none */
1594 : F_RANGE_TYPANALYZE, /* analyze procedure */
1595 : InvalidOid, /* subscript procedure - none */
1596 : InvalidOid, /* element type ID - none */
1597 : false, /* this is not an array type */
1598 : rangeArrayOid, /* array type we are about to create */
1599 : InvalidOid, /* base type ID (only for domains) */
1600 : NULL, /* never a default type value */
1601 : NULL, /* no binary form available either */
1602 : false, /* never passed by value */
1603 : alignment, /* alignment */
1604 : TYPSTORAGE_EXTENDED, /* TOAST strategy (always extended) */
1605 : -1, /* typMod (Domains only) */
1606 : 0, /* Array dimensions of typbasetype */
1607 : false, /* Type NOT NULL */
1608 : InvalidOid); /* type's collation (ranges never have one) */
1609 : Assert(typoid == InvalidOid || typoid == address.objectId);
1610 142 : typoid = address.objectId;
1611 :
1612 : /* Create the multirange that goes with it */
1613 142 : if (multirangeTypeName)
1614 : {
1615 : Oid old_typoid;
1616 :
1617 : /*
1618 : * Look to see if multirange type already exists.
1619 : */
1620 27 : old_typoid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
1621 : CStringGetDatum(multirangeTypeName),
1622 : ObjectIdGetDatum(multirangeNamespace));
1623 :
1624 : /*
1625 : * If it's not a shell, see if it's an autogenerated array type, and
1626 : * if so rename it out of the way.
1627 : */
1628 27 : if (OidIsValid(old_typoid) && get_typisdefined(old_typoid))
1629 : {
1630 8 : if (!moveArrayTypeName(old_typoid, multirangeTypeName, multirangeNamespace))
1631 4 : ereport(ERROR,
1632 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1633 : errmsg("type \"%s\" already exists", multirangeTypeName)));
1634 : }
1635 : }
1636 : else
1637 : {
1638 : /* Generate multirange name automatically */
1639 115 : multirangeNamespace = typeNamespace;
1640 115 : multirangeTypeName = makeMultirangeTypeName(typeName, multirangeNamespace);
1641 : }
1642 :
1643 : mltrngaddress =
1644 130 : TypeCreate(multirangeOid, /* force assignment of this type OID */
1645 : multirangeTypeName, /* type name */
1646 : multirangeNamespace, /* namespace */
1647 : InvalidOid, /* relation oid (n/a here) */
1648 : 0, /* relation kind (ditto) */
1649 : GetUserId(), /* owner's ID */
1650 : -1, /* internal size (always varlena) */
1651 : TYPTYPE_MULTIRANGE, /* type-type (multirange type) */
1652 : TYPCATEGORY_RANGE, /* type-category (range type) */
1653 : false, /* multirange types are never preferred */
1654 : DEFAULT_TYPDELIM, /* array element delimiter */
1655 : F_MULTIRANGE_IN, /* input procedure */
1656 : F_MULTIRANGE_OUT, /* output procedure */
1657 : F_MULTIRANGE_RECV, /* receive procedure */
1658 : F_MULTIRANGE_SEND, /* send procedure */
1659 : InvalidOid, /* typmodin procedure - none */
1660 : InvalidOid, /* typmodout procedure - none */
1661 : F_MULTIRANGE_TYPANALYZE, /* analyze procedure */
1662 : InvalidOid, /* subscript procedure - none */
1663 : InvalidOid, /* element type ID - none */
1664 : false, /* this is not an array type */
1665 : multirangeArrayOid, /* array type we are about to create */
1666 : InvalidOid, /* base type ID (only for domains) */
1667 : NULL, /* never a default type value */
1668 : NULL, /* no binary form available either */
1669 : false, /* never passed by value */
1670 : alignment, /* alignment */
1671 : 'x', /* TOAST strategy (always extended) */
1672 : -1, /* typMod (Domains only) */
1673 : 0, /* Array dimensions of typbasetype */
1674 : false, /* Type NOT NULL */
1675 : InvalidOid); /* type's collation (ranges never have one) */
1676 : Assert(multirangeOid == mltrngaddress.objectId);
1677 :
1678 : /*
1679 : * Create the array type that goes with it.
1680 : */
1681 130 : rangeArrayName = makeArrayTypeName(typeName, typeNamespace);
1682 :
1683 130 : TypeCreate(rangeArrayOid, /* force assignment of this type OID */
1684 : rangeArrayName, /* type name */
1685 : typeNamespace, /* namespace */
1686 : InvalidOid, /* relation oid (n/a here) */
1687 : 0, /* relation kind (ditto) */
1688 : GetUserId(), /* owner's ID */
1689 : -1, /* internal size (always varlena) */
1690 : TYPTYPE_BASE, /* type-type (base type) */
1691 : TYPCATEGORY_ARRAY, /* type-category (array) */
1692 : false, /* array types are never preferred */
1693 : DEFAULT_TYPDELIM, /* array element delimiter */
1694 : F_ARRAY_IN, /* input procedure */
1695 : F_ARRAY_OUT, /* output procedure */
1696 : F_ARRAY_RECV, /* receive procedure */
1697 : F_ARRAY_SEND, /* send procedure */
1698 : InvalidOid, /* typmodin procedure - none */
1699 : InvalidOid, /* typmodout procedure - none */
1700 : F_ARRAY_TYPANALYZE, /* analyze procedure */
1701 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
1702 : typoid, /* element type ID */
1703 : true, /* yes this is an array type */
1704 : InvalidOid, /* no further array type */
1705 : InvalidOid, /* base type ID */
1706 : NULL, /* never a default type value */
1707 : NULL, /* binary default isn't sent either */
1708 : false, /* never passed by value */
1709 : alignment, /* alignment - same as range's */
1710 : TYPSTORAGE_EXTENDED, /* ARRAY is always toastable */
1711 : -1, /* typMod (Domains only) */
1712 : 0, /* Array dimensions of typbasetype */
1713 : false, /* Type NOT NULL */
1714 : InvalidOid); /* typcollation */
1715 :
1716 130 : pfree(rangeArrayName);
1717 :
1718 : /* Create the multirange's array type */
1719 :
1720 130 : multirangeArrayName = makeArrayTypeName(multirangeTypeName, typeNamespace);
1721 :
1722 130 : TypeCreate(multirangeArrayOid, /* force assignment of this type OID */
1723 : multirangeArrayName, /* type name */
1724 : multirangeNamespace, /* namespace */
1725 : InvalidOid, /* relation oid (n/a here) */
1726 : 0, /* relation kind (ditto) */
1727 : GetUserId(), /* owner's ID */
1728 : -1, /* internal size (always varlena) */
1729 : TYPTYPE_BASE, /* type-type (base type) */
1730 : TYPCATEGORY_ARRAY, /* type-category (array) */
1731 : false, /* array types are never preferred */
1732 : DEFAULT_TYPDELIM, /* array element delimiter */
1733 : F_ARRAY_IN, /* input procedure */
1734 : F_ARRAY_OUT, /* output procedure */
1735 : F_ARRAY_RECV, /* receive procedure */
1736 : F_ARRAY_SEND, /* send procedure */
1737 : InvalidOid, /* typmodin procedure - none */
1738 : InvalidOid, /* typmodout procedure - none */
1739 : F_ARRAY_TYPANALYZE, /* analyze procedure */
1740 : F_ARRAY_SUBSCRIPT_HANDLER, /* array subscript procedure */
1741 : multirangeOid, /* element type ID */
1742 : true, /* yes this is an array type */
1743 : InvalidOid, /* no further array type */
1744 : InvalidOid, /* base type ID */
1745 : NULL, /* never a default type value */
1746 : NULL, /* binary default isn't sent either */
1747 : false, /* never passed by value */
1748 : alignment, /* alignment - same as range's */
1749 : 'x', /* ARRAY is always toastable */
1750 : -1, /* typMod (Domains only) */
1751 : 0, /* Array dimensions of typbasetype */
1752 : false, /* Type NOT NULL */
1753 : InvalidOid); /* typcollation */
1754 :
1755 : /* Ensure these new types are visible to ProcedureCreate */
1756 130 : CommandCounterIncrement();
1757 :
1758 : /* And create the constructor functions for this range type */
1759 130 : makeRangeConstructors(typeName, typeNamespace, typoid, rangeSubtype,
1760 : &rangeConstruct2Oid, &rangeConstruct3Oid);
1761 130 : makeMultirangeConstructors(multirangeTypeName, typeNamespace,
1762 : multirangeOid, typoid, rangeArrayOid,
1763 : &mltrngConstruct0Oid, &mltrngConstruct1Oid, &mltrngConstruct2Oid);
1764 130 : castFuncOid = mltrngConstruct1Oid;
1765 :
1766 : /* Create the entry in pg_range */
1767 130 : RangeCreate(typoid, rangeSubtype, rangeCollation, rangeSubOpclass,
1768 : rangeCanonical, rangeSubtypeDiff, multirangeOid,
1769 : rangeConstruct2Oid, rangeConstruct3Oid,
1770 : mltrngConstruct0Oid, mltrngConstruct1Oid, mltrngConstruct2Oid);
1771 :
1772 : /* Create cast from the range type to its multirange type */
1773 130 : CastCreate(typoid, multirangeOid, castFuncOid, InvalidOid, InvalidOid,
1774 : COERCION_CODE_EXPLICIT, COERCION_METHOD_FUNCTION,
1775 : DEPENDENCY_INTERNAL);
1776 :
1777 130 : pfree(multirangeArrayName);
1778 :
1779 130 : return address;
1780 : }
1781 :
1782 : /*
1783 : * Because there may exist several range types over the same subtype, the
1784 : * range type can't be uniquely determined from the subtype. So it's
1785 : * impossible to define a polymorphic constructor; we have to generate new
1786 : * constructor functions explicitly for each range type.
1787 : *
1788 : * We actually define 2 functions, with 2 through 3 arguments. This is just
1789 : * to offer more convenience for the user.
1790 : *
1791 : * The OIDs of the created functions are returned through the pointer
1792 : * arguments.
1793 : */
1794 : static void
1795 130 : makeRangeConstructors(const char *name, Oid namespace,
1796 : Oid rangeOid, Oid subtype,
1797 : Oid *rangeConstruct2_p, Oid *rangeConstruct3_p)
1798 : {
1799 : static const char *const prosrc[2] = {"range_constructor2",
1800 : "range_constructor3"};
1801 : static const int pronargs[2] = {2, 3};
1802 :
1803 : Oid constructorArgTypes[3];
1804 : ObjectAddress myself,
1805 : referenced;
1806 : int i;
1807 :
1808 130 : constructorArgTypes[0] = subtype;
1809 130 : constructorArgTypes[1] = subtype;
1810 130 : constructorArgTypes[2] = TEXTOID;
1811 :
1812 130 : referenced.classId = TypeRelationId;
1813 130 : referenced.objectId = rangeOid;
1814 130 : referenced.objectSubId = 0;
1815 :
1816 390 : for (i = 0; i < lengthof(prosrc); i++)
1817 : {
1818 : oidvector *constructorArgTypesVector;
1819 :
1820 260 : constructorArgTypesVector = buildoidvector(constructorArgTypes,
1821 260 : pronargs[i]);
1822 :
1823 260 : myself = ProcedureCreate(name, /* name: same as range type */
1824 : namespace, /* namespace */
1825 : false, /* replace */
1826 : false, /* returns set */
1827 : rangeOid, /* return type */
1828 : BOOTSTRAP_SUPERUSERID, /* proowner */
1829 : INTERNALlanguageId, /* language */
1830 : F_FMGR_INTERNAL_VALIDATOR, /* language validator */
1831 260 : prosrc[i], /* prosrc */
1832 : NULL, /* probin */
1833 : NULL, /* prosqlbody */
1834 : PROKIND_FUNCTION,
1835 : false, /* security_definer */
1836 : false, /* leakproof */
1837 : false, /* isStrict */
1838 : PROVOLATILE_IMMUTABLE, /* volatility */
1839 : PROPARALLEL_SAFE, /* parallel safety */
1840 : constructorArgTypesVector, /* parameterTypes */
1841 : PointerGetDatum(NULL), /* allParameterTypes */
1842 : PointerGetDatum(NULL), /* parameterModes */
1843 : PointerGetDatum(NULL), /* parameterNames */
1844 : NIL, /* parameterDefaults */
1845 : PointerGetDatum(NULL), /* trftypes */
1846 : NIL, /* trfoids */
1847 : PointerGetDatum(NULL), /* proconfig */
1848 : InvalidOid, /* prosupport */
1849 : 1.0, /* procost */
1850 : 0.0); /* prorows */
1851 :
1852 : /*
1853 : * Make the constructors internally-dependent on the range type so
1854 : * that they go away silently when the type is dropped. Note that
1855 : * pg_dump depends on this choice to avoid dumping the constructors.
1856 : */
1857 260 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1858 :
1859 260 : if (pronargs[i] == 2)
1860 130 : *rangeConstruct2_p = myself.objectId;
1861 130 : else if (pronargs[i] == 3)
1862 130 : *rangeConstruct3_p = myself.objectId;
1863 : }
1864 130 : }
1865 :
1866 : /*
1867 : * We make a separate multirange constructor for each range type
1868 : * so its name can include the base type, like range constructors do.
1869 : * If we had an anyrangearray polymorphic type we could use it here,
1870 : * but since each type has its own constructor name there's no need.
1871 : *
1872 : * The OIDs of the created functions are returned through the pointer
1873 : * arguments.
1874 : */
1875 : static void
1876 130 : makeMultirangeConstructors(const char *name, Oid namespace,
1877 : Oid multirangeOid, Oid rangeOid, Oid rangeArrayOid,
1878 : Oid *mltrngConstruct0_p, Oid *mltrngConstruct1_p, Oid *mltrngConstruct2_p)
1879 : {
1880 : ObjectAddress myself,
1881 : referenced;
1882 : oidvector *argtypes;
1883 : Datum allParamTypes;
1884 : ArrayType *allParameterTypes;
1885 : Datum paramModes;
1886 : ArrayType *parameterModes;
1887 :
1888 130 : referenced.classId = TypeRelationId;
1889 130 : referenced.objectId = multirangeOid;
1890 130 : referenced.objectSubId = 0;
1891 :
1892 : /* 0-arg constructor - for empty multiranges */
1893 130 : argtypes = buildoidvector(NULL, 0);
1894 130 : myself = ProcedureCreate(name, /* name: same as multirange type */
1895 : namespace,
1896 : false, /* replace */
1897 : false, /* returns set */
1898 : multirangeOid, /* return type */
1899 : BOOTSTRAP_SUPERUSERID, /* proowner */
1900 : INTERNALlanguageId, /* language */
1901 : F_FMGR_INTERNAL_VALIDATOR,
1902 : "multirange_constructor0", /* prosrc */
1903 : NULL, /* probin */
1904 : NULL, /* prosqlbody */
1905 : PROKIND_FUNCTION,
1906 : false, /* security_definer */
1907 : false, /* leakproof */
1908 : true, /* isStrict */
1909 : PROVOLATILE_IMMUTABLE, /* volatility */
1910 : PROPARALLEL_SAFE, /* parallel safety */
1911 : argtypes, /* parameterTypes */
1912 : PointerGetDatum(NULL), /* allParameterTypes */
1913 : PointerGetDatum(NULL), /* parameterModes */
1914 : PointerGetDatum(NULL), /* parameterNames */
1915 : NIL, /* parameterDefaults */
1916 : PointerGetDatum(NULL), /* trftypes */
1917 : NIL, /* trfoids */
1918 : PointerGetDatum(NULL), /* proconfig */
1919 : InvalidOid, /* prosupport */
1920 : 1.0, /* procost */
1921 : 0.0); /* prorows */
1922 :
1923 : /*
1924 : * Make the constructor internally-dependent on the multirange type so
1925 : * that they go away silently when the type is dropped. Note that pg_dump
1926 : * depends on this choice to avoid dumping the constructors.
1927 : */
1928 130 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1929 130 : *mltrngConstruct0_p = myself.objectId;
1930 130 : pfree(argtypes);
1931 :
1932 : /*
1933 : * 1-arg constructor - for casts
1934 : *
1935 : * In theory we shouldn't need both this and the vararg (n-arg)
1936 : * constructor, but having a separate 1-arg function lets us define casts
1937 : * against it.
1938 : */
1939 130 : argtypes = buildoidvector(&rangeOid, 1);
1940 130 : myself = ProcedureCreate(name, /* name: same as multirange type */
1941 : namespace,
1942 : false, /* replace */
1943 : false, /* returns set */
1944 : multirangeOid, /* return type */
1945 : BOOTSTRAP_SUPERUSERID, /* proowner */
1946 : INTERNALlanguageId, /* language */
1947 : F_FMGR_INTERNAL_VALIDATOR,
1948 : "multirange_constructor1", /* prosrc */
1949 : NULL, /* probin */
1950 : NULL, /* prosqlbody */
1951 : PROKIND_FUNCTION,
1952 : false, /* security_definer */
1953 : false, /* leakproof */
1954 : true, /* isStrict */
1955 : PROVOLATILE_IMMUTABLE, /* volatility */
1956 : PROPARALLEL_SAFE, /* parallel safety */
1957 : argtypes, /* parameterTypes */
1958 : PointerGetDatum(NULL), /* allParameterTypes */
1959 : PointerGetDatum(NULL), /* parameterModes */
1960 : PointerGetDatum(NULL), /* parameterNames */
1961 : NIL, /* parameterDefaults */
1962 : PointerGetDatum(NULL), /* trftypes */
1963 : NIL, /* trfoids */
1964 : PointerGetDatum(NULL), /* proconfig */
1965 : InvalidOid, /* prosupport */
1966 : 1.0, /* procost */
1967 : 0.0); /* prorows */
1968 : /* ditto */
1969 130 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
1970 130 : *mltrngConstruct1_p = myself.objectId;
1971 130 : pfree(argtypes);
1972 :
1973 : /* n-arg constructor - vararg */
1974 130 : argtypes = buildoidvector(&rangeArrayOid, 1);
1975 130 : allParamTypes = ObjectIdGetDatum(rangeArrayOid);
1976 130 : allParameterTypes = construct_array_builtin(&allParamTypes, 1, OIDOID);
1977 130 : paramModes = CharGetDatum(FUNC_PARAM_VARIADIC);
1978 130 : parameterModes = construct_array_builtin(¶mModes, 1, CHAROID);
1979 130 : myself = ProcedureCreate(name, /* name: same as multirange type */
1980 : namespace,
1981 : false, /* replace */
1982 : false, /* returns set */
1983 : multirangeOid, /* return type */
1984 : BOOTSTRAP_SUPERUSERID, /* proowner */
1985 : INTERNALlanguageId, /* language */
1986 : F_FMGR_INTERNAL_VALIDATOR,
1987 : "multirange_constructor2", /* prosrc */
1988 : NULL, /* probin */
1989 : NULL, /* prosqlbody */
1990 : PROKIND_FUNCTION,
1991 : false, /* security_definer */
1992 : false, /* leakproof */
1993 : true, /* isStrict */
1994 : PROVOLATILE_IMMUTABLE, /* volatility */
1995 : PROPARALLEL_SAFE, /* parallel safety */
1996 : argtypes, /* parameterTypes */
1997 : PointerGetDatum(allParameterTypes), /* allParameterTypes */
1998 : PointerGetDatum(parameterModes), /* parameterModes */
1999 : PointerGetDatum(NULL), /* parameterNames */
2000 : NIL, /* parameterDefaults */
2001 : PointerGetDatum(NULL), /* trftypes */
2002 : NIL, /* trfoids */
2003 : PointerGetDatum(NULL), /* proconfig */
2004 : InvalidOid, /* prosupport */
2005 : 1.0, /* procost */
2006 : 0.0); /* prorows */
2007 : /* ditto */
2008 130 : recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
2009 130 : *mltrngConstruct2_p = myself.objectId;
2010 130 : pfree(argtypes);
2011 130 : pfree(allParameterTypes);
2012 130 : pfree(parameterModes);
2013 130 : }
2014 :
2015 : /*
2016 : * Find suitable I/O and other support functions for a type.
2017 : *
2018 : * typeOid is the type's OID (which will already exist, if only as a shell
2019 : * type).
2020 : */
2021 :
2022 : static Oid
2023 129 : findTypeInputFunction(List *procname, Oid typeOid)
2024 : {
2025 : Oid argList[3];
2026 : Oid procOid;
2027 : Oid procOid2;
2028 :
2029 : /*
2030 : * Input functions can take a single argument of type CSTRING, or three
2031 : * arguments (string, typioparam OID, typmod). Whine about ambiguity if
2032 : * both forms exist.
2033 : */
2034 129 : argList[0] = CSTRINGOID;
2035 129 : argList[1] = OIDOID;
2036 129 : argList[2] = INT4OID;
2037 :
2038 129 : procOid = LookupFuncName(procname, 1, argList, true);
2039 129 : procOid2 = LookupFuncName(procname, 3, argList, true);
2040 129 : if (OidIsValid(procOid))
2041 : {
2042 119 : if (OidIsValid(procOid2))
2043 0 : ereport(ERROR,
2044 : (errcode(ERRCODE_AMBIGUOUS_FUNCTION),
2045 : errmsg("type input function %s has multiple matches",
2046 : NameListToString(procname))));
2047 : }
2048 : else
2049 : {
2050 10 : procOid = procOid2;
2051 : /* If not found, reference the 1-argument signature in error msg */
2052 10 : if (!OidIsValid(procOid))
2053 0 : ereport(ERROR,
2054 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2055 : errmsg("function %s does not exist",
2056 : func_signature_string(procname, 1, NIL, argList))));
2057 : }
2058 :
2059 : /* Input functions must return the target type. */
2060 129 : if (get_func_rettype(procOid) != typeOid)
2061 4 : ereport(ERROR,
2062 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2063 : errmsg("type input function %s must return type %s",
2064 : NameListToString(procname), format_type_be(typeOid))));
2065 :
2066 : /*
2067 : * Print warnings if any of the type's I/O functions are marked volatile.
2068 : * There is a general assumption that I/O functions are stable or
2069 : * immutable; this allows us for example to mark record_in/record_out
2070 : * stable rather than volatile. Ideally we would throw errors not just
2071 : * warnings here; but since this check is new as of 9.5, and since the
2072 : * volatility marking might be just an error-of-omission and not a true
2073 : * indication of how the function behaves, we'll let it pass as a warning
2074 : * for now.
2075 : */
2076 125 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2077 0 : ereport(WARNING,
2078 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2079 : errmsg("type input function %s should not be volatile",
2080 : NameListToString(procname))));
2081 :
2082 125 : return procOid;
2083 : }
2084 :
2085 : static Oid
2086 125 : findTypeOutputFunction(List *procname, Oid typeOid)
2087 : {
2088 : Oid argList[1];
2089 : Oid procOid;
2090 :
2091 : /*
2092 : * Output functions always take a single argument of the type and return
2093 : * cstring.
2094 : */
2095 125 : argList[0] = typeOid;
2096 :
2097 125 : procOid = LookupFuncName(procname, 1, argList, true);
2098 125 : if (!OidIsValid(procOid))
2099 0 : ereport(ERROR,
2100 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2101 : errmsg("function %s does not exist",
2102 : func_signature_string(procname, 1, NIL, argList))));
2103 :
2104 125 : if (get_func_rettype(procOid) != CSTRINGOID)
2105 0 : ereport(ERROR,
2106 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2107 : errmsg("type output function %s must return type %s",
2108 : NameListToString(procname), "cstring")));
2109 :
2110 : /* Just a warning for now, per comments in findTypeInputFunction */
2111 125 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2112 0 : ereport(WARNING,
2113 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2114 : errmsg("type output function %s should not be volatile",
2115 : NameListToString(procname))));
2116 :
2117 125 : return procOid;
2118 : }
2119 :
2120 : static Oid
2121 24 : findTypeReceiveFunction(List *procname, Oid typeOid)
2122 : {
2123 : Oid argList[3];
2124 : Oid procOid;
2125 : Oid procOid2;
2126 :
2127 : /*
2128 : * Receive functions can take a single argument of type INTERNAL, or three
2129 : * arguments (internal, typioparam OID, typmod). Whine about ambiguity if
2130 : * both forms exist.
2131 : */
2132 24 : argList[0] = INTERNALOID;
2133 24 : argList[1] = OIDOID;
2134 24 : argList[2] = INT4OID;
2135 :
2136 24 : procOid = LookupFuncName(procname, 1, argList, true);
2137 24 : procOid2 = LookupFuncName(procname, 3, argList, true);
2138 24 : if (OidIsValid(procOid))
2139 : {
2140 18 : if (OidIsValid(procOid2))
2141 0 : ereport(ERROR,
2142 : (errcode(ERRCODE_AMBIGUOUS_FUNCTION),
2143 : errmsg("type receive function %s has multiple matches",
2144 : NameListToString(procname))));
2145 : }
2146 : else
2147 : {
2148 6 : procOid = procOid2;
2149 : /* If not found, reference the 1-argument signature in error msg */
2150 6 : if (!OidIsValid(procOid))
2151 0 : ereport(ERROR,
2152 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2153 : errmsg("function %s does not exist",
2154 : func_signature_string(procname, 1, NIL, argList))));
2155 : }
2156 :
2157 : /* Receive functions must return the target type. */
2158 24 : if (get_func_rettype(procOid) != typeOid)
2159 0 : ereport(ERROR,
2160 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2161 : errmsg("type receive function %s must return type %s",
2162 : NameListToString(procname), format_type_be(typeOid))));
2163 :
2164 : /* Just a warning for now, per comments in findTypeInputFunction */
2165 24 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2166 0 : ereport(WARNING,
2167 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2168 : errmsg("type receive function %s should not be volatile",
2169 : NameListToString(procname))));
2170 :
2171 24 : return procOid;
2172 : }
2173 :
2174 : static Oid
2175 24 : findTypeSendFunction(List *procname, Oid typeOid)
2176 : {
2177 : Oid argList[1];
2178 : Oid procOid;
2179 :
2180 : /*
2181 : * Send functions always take a single argument of the type and return
2182 : * bytea.
2183 : */
2184 24 : argList[0] = typeOid;
2185 :
2186 24 : procOid = LookupFuncName(procname, 1, argList, true);
2187 24 : if (!OidIsValid(procOid))
2188 0 : ereport(ERROR,
2189 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2190 : errmsg("function %s does not exist",
2191 : func_signature_string(procname, 1, NIL, argList))));
2192 :
2193 24 : if (get_func_rettype(procOid) != BYTEAOID)
2194 0 : ereport(ERROR,
2195 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2196 : errmsg("type send function %s must return type %s",
2197 : NameListToString(procname), "bytea")));
2198 :
2199 : /* Just a warning for now, per comments in findTypeInputFunction */
2200 24 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2201 0 : ereport(WARNING,
2202 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2203 : errmsg("type send function %s should not be volatile",
2204 : NameListToString(procname))));
2205 :
2206 24 : return procOid;
2207 : }
2208 :
2209 : static Oid
2210 9 : findTypeTypmodinFunction(List *procname)
2211 : {
2212 : Oid argList[1];
2213 : Oid procOid;
2214 :
2215 : /*
2216 : * typmodin functions always take one cstring[] argument and return int4.
2217 : */
2218 9 : argList[0] = CSTRINGARRAYOID;
2219 :
2220 9 : procOid = LookupFuncName(procname, 1, argList, true);
2221 9 : if (!OidIsValid(procOid))
2222 0 : ereport(ERROR,
2223 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2224 : errmsg("function %s does not exist",
2225 : func_signature_string(procname, 1, NIL, argList))));
2226 :
2227 9 : if (get_func_rettype(procOid) != INT4OID)
2228 0 : ereport(ERROR,
2229 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2230 : errmsg("typmod_in function %s must return type %s",
2231 : NameListToString(procname), "integer")));
2232 :
2233 : /* Just a warning for now, per comments in findTypeInputFunction */
2234 9 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2235 0 : ereport(WARNING,
2236 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2237 : errmsg("type modifier input function %s should not be volatile",
2238 : NameListToString(procname))));
2239 :
2240 9 : return procOid;
2241 : }
2242 :
2243 : static Oid
2244 9 : findTypeTypmodoutFunction(List *procname)
2245 : {
2246 : Oid argList[1];
2247 : Oid procOid;
2248 :
2249 : /*
2250 : * typmodout functions always take one int4 argument and return cstring.
2251 : */
2252 9 : argList[0] = INT4OID;
2253 :
2254 9 : procOid = LookupFuncName(procname, 1, argList, true);
2255 9 : if (!OidIsValid(procOid))
2256 0 : ereport(ERROR,
2257 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2258 : errmsg("function %s does not exist",
2259 : func_signature_string(procname, 1, NIL, argList))));
2260 :
2261 9 : if (get_func_rettype(procOid) != CSTRINGOID)
2262 0 : ereport(ERROR,
2263 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2264 : errmsg("typmod_out function %s must return type %s",
2265 : NameListToString(procname), "cstring")));
2266 :
2267 : /* Just a warning for now, per comments in findTypeInputFunction */
2268 9 : if (func_volatile(procOid) == PROVOLATILE_VOLATILE)
2269 0 : ereport(WARNING,
2270 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2271 : errmsg("type modifier output function %s should not be volatile",
2272 : NameListToString(procname))));
2273 :
2274 9 : return procOid;
2275 : }
2276 :
2277 : static Oid
2278 6 : findTypeAnalyzeFunction(List *procname, Oid typeOid)
2279 : {
2280 : Oid argList[1];
2281 : Oid procOid;
2282 :
2283 : /*
2284 : * Analyze functions always take one INTERNAL argument and return bool.
2285 : */
2286 6 : argList[0] = INTERNALOID;
2287 :
2288 6 : procOid = LookupFuncName(procname, 1, argList, true);
2289 6 : if (!OidIsValid(procOid))
2290 0 : ereport(ERROR,
2291 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2292 : errmsg("function %s does not exist",
2293 : func_signature_string(procname, 1, NIL, argList))));
2294 :
2295 6 : if (get_func_rettype(procOid) != BOOLOID)
2296 0 : ereport(ERROR,
2297 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2298 : errmsg("type analyze function %s must return type %s",
2299 : NameListToString(procname), "boolean")));
2300 :
2301 6 : return procOid;
2302 : }
2303 :
2304 : static Oid
2305 12 : findTypeSubscriptingFunction(List *procname, Oid typeOid)
2306 : {
2307 : Oid argList[1];
2308 : Oid procOid;
2309 :
2310 : /*
2311 : * Subscripting support functions always take one INTERNAL argument and
2312 : * return INTERNAL. (The argument is not used, but we must have it to
2313 : * maintain type safety.)
2314 : */
2315 12 : argList[0] = INTERNALOID;
2316 :
2317 12 : procOid = LookupFuncName(procname, 1, argList, true);
2318 12 : if (!OidIsValid(procOid))
2319 0 : ereport(ERROR,
2320 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2321 : errmsg("function %s does not exist",
2322 : func_signature_string(procname, 1, NIL, argList))));
2323 :
2324 12 : if (get_func_rettype(procOid) != INTERNALOID)
2325 0 : ereport(ERROR,
2326 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2327 : errmsg("type subscripting function %s must return type %s",
2328 : NameListToString(procname), "internal")));
2329 :
2330 : /*
2331 : * We disallow array_subscript_handler() from being selected explicitly,
2332 : * since that must only be applied to autogenerated array types.
2333 : */
2334 12 : if (procOid == F_ARRAY_SUBSCRIPT_HANDLER)
2335 0 : ereport(ERROR,
2336 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2337 : errmsg("user-defined types cannot use subscripting function %s",
2338 : NameListToString(procname))));
2339 :
2340 12 : return procOid;
2341 : }
2342 :
2343 : /*
2344 : * Find suitable support functions and opclasses for a range type.
2345 : */
2346 :
2347 : /*
2348 : * Find named btree opclass for subtype, or default btree opclass if
2349 : * opcname is NIL.
2350 : */
2351 : static Oid
2352 146 : findRangeSubOpclass(List *opcname, Oid subtype)
2353 : {
2354 : Oid opcid;
2355 : Oid opInputType;
2356 :
2357 146 : if (opcname != NIL)
2358 : {
2359 5 : opcid = get_opclass_oid(BTREE_AM_OID, opcname, false);
2360 :
2361 : /*
2362 : * Verify that the operator class accepts this datatype. Note we will
2363 : * accept binary compatibility.
2364 : */
2365 5 : opInputType = get_opclass_input_type(opcid);
2366 5 : if (!IsBinaryCoercible(subtype, opInputType))
2367 0 : ereport(ERROR,
2368 : (errcode(ERRCODE_DATATYPE_MISMATCH),
2369 : errmsg("operator class \"%s\" does not accept data type %s",
2370 : NameListToString(opcname),
2371 : format_type_be(subtype))));
2372 : }
2373 : else
2374 : {
2375 141 : opcid = GetDefaultOpClass(subtype, BTREE_AM_OID);
2376 141 : if (!OidIsValid(opcid))
2377 : {
2378 : /* We spell the error message identically to ResolveOpClass */
2379 0 : ereport(ERROR,
2380 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2381 : errmsg("data type %s has no default operator class for access method \"%s\"",
2382 : format_type_be(subtype), "btree"),
2383 : errhint("You must specify an operator class for the range type or define a default operator class for the subtype.")));
2384 : }
2385 : }
2386 :
2387 146 : return opcid;
2388 : }
2389 :
2390 : static Oid
2391 0 : findRangeCanonicalFunction(List *procname, Oid typeOid)
2392 : {
2393 : Oid argList[1];
2394 : Oid procOid;
2395 : AclResult aclresult;
2396 :
2397 : /*
2398 : * Range canonical functions must take and return the range type, and must
2399 : * be immutable.
2400 : */
2401 0 : argList[0] = typeOid;
2402 :
2403 0 : procOid = LookupFuncName(procname, 1, argList, true);
2404 :
2405 0 : if (!OidIsValid(procOid))
2406 0 : ereport(ERROR,
2407 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2408 : errmsg("function %s does not exist",
2409 : func_signature_string(procname, 1, NIL, argList))));
2410 :
2411 0 : if (get_func_rettype(procOid) != typeOid)
2412 0 : ereport(ERROR,
2413 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2414 : errmsg("range canonical function %s must return range type",
2415 : func_signature_string(procname, 1, NIL, argList))));
2416 :
2417 0 : if (func_volatile(procOid) != PROVOLATILE_IMMUTABLE)
2418 0 : ereport(ERROR,
2419 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2420 : errmsg("range canonical function %s must be immutable",
2421 : func_signature_string(procname, 1, NIL, argList))));
2422 :
2423 : /* Also, range type's creator must have permission to call function */
2424 0 : aclresult = object_aclcheck(ProcedureRelationId, procOid, GetUserId(), ACL_EXECUTE);
2425 0 : if (aclresult != ACLCHECK_OK)
2426 0 : aclcheck_error(aclresult, OBJECT_FUNCTION, get_func_name(procOid));
2427 :
2428 0 : return procOid;
2429 : }
2430 :
2431 : static Oid
2432 14 : findRangeSubtypeDiffFunction(List *procname, Oid subtype)
2433 : {
2434 : Oid argList[2];
2435 : Oid procOid;
2436 : AclResult aclresult;
2437 :
2438 : /*
2439 : * Range subtype diff functions must take two arguments of the subtype,
2440 : * must return float8, and must be immutable.
2441 : */
2442 14 : argList[0] = subtype;
2443 14 : argList[1] = subtype;
2444 :
2445 14 : procOid = LookupFuncName(procname, 2, argList, true);
2446 :
2447 14 : if (!OidIsValid(procOid))
2448 4 : ereport(ERROR,
2449 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
2450 : errmsg("function %s does not exist",
2451 : func_signature_string(procname, 2, NIL, argList))));
2452 :
2453 10 : if (get_func_rettype(procOid) != FLOAT8OID)
2454 0 : ereport(ERROR,
2455 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2456 : errmsg("range subtype diff function %s must return type %s",
2457 : func_signature_string(procname, 2, NIL, argList),
2458 : "double precision")));
2459 :
2460 10 : if (func_volatile(procOid) != PROVOLATILE_IMMUTABLE)
2461 0 : ereport(ERROR,
2462 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2463 : errmsg("range subtype diff function %s must be immutable",
2464 : func_signature_string(procname, 2, NIL, argList))));
2465 :
2466 : /* Also, range type's creator must have permission to call function */
2467 10 : aclresult = object_aclcheck(ProcedureRelationId, procOid, GetUserId(), ACL_EXECUTE);
2468 10 : if (aclresult != ACLCHECK_OK)
2469 0 : aclcheck_error(aclresult, OBJECT_FUNCTION, get_func_name(procOid));
2470 :
2471 10 : return procOid;
2472 : }
2473 :
2474 : /*
2475 : * AssignTypeArrayOid
2476 : *
2477 : * Pre-assign the type's array OID for use in pg_type.typarray
2478 : */
2479 : Oid
2480 47284 : AssignTypeArrayOid(void)
2481 : {
2482 : Oid type_array_oid;
2483 :
2484 : /* Use binary-upgrade override for pg_type.typarray? */
2485 47284 : if (IsBinaryUpgrade)
2486 : {
2487 933 : if (!OidIsValid(binary_upgrade_next_array_pg_type_oid))
2488 0 : ereport(ERROR,
2489 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2490 : errmsg("pg_type array OID value not set when in binary upgrade mode")));
2491 :
2492 933 : type_array_oid = binary_upgrade_next_array_pg_type_oid;
2493 933 : binary_upgrade_next_array_pg_type_oid = InvalidOid;
2494 : }
2495 : else
2496 : {
2497 46351 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2498 :
2499 46351 : type_array_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2500 : Anum_pg_type_oid);
2501 46351 : table_close(pg_type, AccessShareLock);
2502 : }
2503 :
2504 47284 : return type_array_oid;
2505 : }
2506 :
2507 : /*
2508 : * AssignTypeMultirangeOid
2509 : *
2510 : * Pre-assign the range type's multirange OID for use in pg_type.oid
2511 : */
2512 : Oid
2513 142 : AssignTypeMultirangeOid(void)
2514 : {
2515 : Oid type_multirange_oid;
2516 :
2517 : /* Use binary-upgrade override for pg_type.oid? */
2518 142 : if (IsBinaryUpgrade)
2519 : {
2520 7 : if (!OidIsValid(binary_upgrade_next_mrng_pg_type_oid))
2521 0 : ereport(ERROR,
2522 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2523 : errmsg("pg_type multirange OID value not set when in binary upgrade mode")));
2524 :
2525 7 : type_multirange_oid = binary_upgrade_next_mrng_pg_type_oid;
2526 7 : binary_upgrade_next_mrng_pg_type_oid = InvalidOid;
2527 : }
2528 : else
2529 : {
2530 135 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2531 :
2532 135 : type_multirange_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2533 : Anum_pg_type_oid);
2534 135 : table_close(pg_type, AccessShareLock);
2535 : }
2536 :
2537 142 : return type_multirange_oid;
2538 : }
2539 :
2540 : /*
2541 : * AssignTypeMultirangeArrayOid
2542 : *
2543 : * Pre-assign the range type's multirange array OID for use in pg_type.typarray
2544 : */
2545 : Oid
2546 142 : AssignTypeMultirangeArrayOid(void)
2547 : {
2548 : Oid type_multirange_array_oid;
2549 :
2550 : /* Use binary-upgrade override for pg_type.oid? */
2551 142 : if (IsBinaryUpgrade)
2552 : {
2553 7 : if (!OidIsValid(binary_upgrade_next_mrng_array_pg_type_oid))
2554 0 : ereport(ERROR,
2555 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2556 : errmsg("pg_type multirange array OID value not set when in binary upgrade mode")));
2557 :
2558 7 : type_multirange_array_oid = binary_upgrade_next_mrng_array_pg_type_oid;
2559 7 : binary_upgrade_next_mrng_array_pg_type_oid = InvalidOid;
2560 : }
2561 : else
2562 : {
2563 135 : Relation pg_type = table_open(TypeRelationId, AccessShareLock);
2564 :
2565 135 : type_multirange_array_oid = GetNewOidWithIndex(pg_type, TypeOidIndexId,
2566 : Anum_pg_type_oid);
2567 135 : table_close(pg_type, AccessShareLock);
2568 : }
2569 :
2570 142 : return type_multirange_array_oid;
2571 : }
2572 :
2573 :
2574 : /*-------------------------------------------------------------------
2575 : * DefineCompositeType
2576 : *
2577 : * Create a Composite Type relation.
2578 : * `DefineRelation' does all the work, we just provide the correct
2579 : * arguments!
2580 : *
2581 : * If the relation already exists, then 'DefineRelation' will abort
2582 : * the xact...
2583 : *
2584 : * Return type is the new type's object address.
2585 : *-------------------------------------------------------------------
2586 : */
2587 : ObjectAddress
2588 2368 : DefineCompositeType(RangeVar *typevar, List *coldeflist)
2589 : {
2590 2368 : CreateStmt *createStmt = makeNode(CreateStmt);
2591 : Oid old_type_oid;
2592 : Oid typeNamespace;
2593 : ObjectAddress address;
2594 :
2595 : /*
2596 : * now set the parameters for keys/inheritance etc. All of these are
2597 : * uninteresting for composite types...
2598 : */
2599 2368 : createStmt->relation = typevar;
2600 2368 : createStmt->tableElts = coldeflist;
2601 2368 : createStmt->inhRelations = NIL;
2602 2368 : createStmt->constraints = NIL;
2603 2368 : createStmt->options = NIL;
2604 2368 : createStmt->oncommit = ONCOMMIT_NOOP;
2605 2368 : createStmt->tablespacename = NULL;
2606 2368 : createStmt->if_not_exists = false;
2607 :
2608 : /*
2609 : * Check for collision with an existing type name. If there is one and
2610 : * it's an autogenerated array, we can rename it out of the way. This
2611 : * check is here mainly to get a better error message about a "type"
2612 : * instead of below about a "relation".
2613 : */
2614 2368 : typeNamespace = RangeVarGetAndCheckCreationNamespace(createStmt->relation,
2615 : NoLock, NULL);
2616 2368 : RangeVarAdjustRelationPersistence(createStmt->relation, typeNamespace);
2617 : old_type_oid =
2618 2368 : GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
2619 : CStringGetDatum(createStmt->relation->relname),
2620 : ObjectIdGetDatum(typeNamespace));
2621 2368 : if (OidIsValid(old_type_oid))
2622 : {
2623 0 : if (!moveArrayTypeName(old_type_oid, createStmt->relation->relname, typeNamespace))
2624 0 : ereport(ERROR,
2625 : (errcode(ERRCODE_DUPLICATE_OBJECT),
2626 : errmsg("type \"%s\" already exists", createStmt->relation->relname)));
2627 : }
2628 :
2629 : /*
2630 : * Finally create the relation. This also creates the type.
2631 : */
2632 2368 : DefineRelation(createStmt, RELKIND_COMPOSITE_TYPE, InvalidOid, &address,
2633 : NULL);
2634 :
2635 2360 : return address;
2636 : }
2637 :
2638 : /*
2639 : * AlterDomainDefault
2640 : *
2641 : * Routine implementing ALTER DOMAIN SET/DROP DEFAULT statements.
2642 : *
2643 : * Returns ObjectAddress of the modified domain.
2644 : */
2645 : ObjectAddress
2646 9 : AlterDomainDefault(List *names, Node *defaultRaw)
2647 : {
2648 : TypeName *typename;
2649 : Oid domainoid;
2650 : HeapTuple tup;
2651 : ParseState *pstate;
2652 : Relation rel;
2653 : char *defaultValue;
2654 9 : Node *defaultExpr = NULL; /* NULL if no default specified */
2655 9 : Datum new_record[Natts_pg_type] = {0};
2656 9 : bool new_record_nulls[Natts_pg_type] = {0};
2657 9 : bool new_record_repl[Natts_pg_type] = {0};
2658 : HeapTuple newtuple;
2659 : Form_pg_type typTup;
2660 : ObjectAddress address;
2661 :
2662 : /* Make a TypeName so we can use standard type lookup machinery */
2663 9 : typename = makeTypeNameFromNameList(names);
2664 9 : domainoid = typenameTypeId(NULL, typename);
2665 :
2666 : /* Look up the domain in the type table */
2667 9 : rel = table_open(TypeRelationId, RowExclusiveLock);
2668 :
2669 9 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2670 9 : if (!HeapTupleIsValid(tup))
2671 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2672 9 : typTup = (Form_pg_type) GETSTRUCT(tup);
2673 :
2674 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2675 9 : checkDomainOwner(tup);
2676 :
2677 : /* Setup new tuple */
2678 :
2679 : /* Store the new default into the tuple */
2680 9 : if (defaultRaw)
2681 : {
2682 : /* Create a dummy ParseState for transformExpr */
2683 5 : pstate = make_parsestate(NULL);
2684 :
2685 : /*
2686 : * Cook the colDef->raw_expr into an expression. Note: Name is
2687 : * strictly for error message
2688 : */
2689 5 : defaultExpr = cookDefault(pstate, defaultRaw,
2690 : typTup->typbasetype,
2691 : typTup->typtypmod,
2692 5 : NameStr(typTup->typname),
2693 : 0);
2694 :
2695 : /*
2696 : * If the expression is just a NULL constant, we treat the command
2697 : * like ALTER ... DROP DEFAULT. (But see note for same test in
2698 : * DefineDomain.)
2699 : */
2700 5 : if (defaultExpr == NULL ||
2701 5 : (IsA(defaultExpr, Const) && ((Const *) defaultExpr)->constisnull))
2702 : {
2703 : /* Default is NULL, drop it */
2704 0 : defaultExpr = NULL;
2705 0 : new_record_nulls[Anum_pg_type_typdefaultbin - 1] = true;
2706 0 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2707 0 : new_record_nulls[Anum_pg_type_typdefault - 1] = true;
2708 0 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2709 : }
2710 : else
2711 : {
2712 : /*
2713 : * Expression must be stored as a nodeToString result, but we also
2714 : * require a valid textual representation (mainly to make life
2715 : * easier for pg_dump).
2716 : */
2717 5 : defaultValue = deparse_expression(defaultExpr,
2718 : NIL, false, false);
2719 :
2720 : /*
2721 : * Form an updated tuple with the new default and write it back.
2722 : */
2723 5 : new_record[Anum_pg_type_typdefaultbin - 1] = CStringGetTextDatum(nodeToString(defaultExpr));
2724 :
2725 5 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2726 5 : new_record[Anum_pg_type_typdefault - 1] = CStringGetTextDatum(defaultValue);
2727 5 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2728 : }
2729 : }
2730 : else
2731 : {
2732 : /* ALTER ... DROP DEFAULT */
2733 4 : new_record_nulls[Anum_pg_type_typdefaultbin - 1] = true;
2734 4 : new_record_repl[Anum_pg_type_typdefaultbin - 1] = true;
2735 4 : new_record_nulls[Anum_pg_type_typdefault - 1] = true;
2736 4 : new_record_repl[Anum_pg_type_typdefault - 1] = true;
2737 : }
2738 :
2739 9 : newtuple = heap_modify_tuple(tup, RelationGetDescr(rel),
2740 : new_record, new_record_nulls,
2741 : new_record_repl);
2742 :
2743 9 : CatalogTupleUpdate(rel, &tup->t_self, newtuple);
2744 :
2745 : /* Rebuild dependencies */
2746 9 : GenerateTypeDependencies(newtuple,
2747 : rel,
2748 : defaultExpr,
2749 : NULL, /* don't have typacl handy */
2750 : 0, /* relation kind is n/a */
2751 : false, /* a domain isn't an implicit array */
2752 : false, /* nor is it any kind of dependent type */
2753 : false, /* don't touch extension membership */
2754 : true); /* We do need to rebuild dependencies */
2755 :
2756 9 : InvokeObjectPostAlterHook(TypeRelationId, domainoid, 0);
2757 :
2758 9 : ObjectAddressSet(address, TypeRelationId, domainoid);
2759 :
2760 : /* Clean up */
2761 9 : table_close(rel, RowExclusiveLock);
2762 9 : heap_freetuple(newtuple);
2763 :
2764 9 : return address;
2765 : }
2766 :
2767 : /*
2768 : * AlterDomainNotNull
2769 : *
2770 : * Routine implementing ALTER DOMAIN SET/DROP NOT NULL statements.
2771 : *
2772 : * Returns ObjectAddress of the modified domain.
2773 : */
2774 : ObjectAddress
2775 24 : AlterDomainNotNull(List *names, bool notNull)
2776 : {
2777 : TypeName *typename;
2778 : Oid domainoid;
2779 : Relation typrel;
2780 : HeapTuple tup;
2781 : Form_pg_type typTup;
2782 24 : ObjectAddress address = InvalidObjectAddress;
2783 :
2784 : /* Make a TypeName so we can use standard type lookup machinery */
2785 24 : typename = makeTypeNameFromNameList(names);
2786 24 : domainoid = typenameTypeId(NULL, typename);
2787 :
2788 : /* Look up the domain in the type table */
2789 24 : typrel = table_open(TypeRelationId, RowExclusiveLock);
2790 :
2791 24 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2792 24 : if (!HeapTupleIsValid(tup))
2793 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2794 24 : typTup = (Form_pg_type) GETSTRUCT(tup);
2795 :
2796 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2797 24 : checkDomainOwner(tup);
2798 :
2799 : /* Is the domain already set to the desired constraint? */
2800 24 : if (typTup->typnotnull == notNull)
2801 : {
2802 0 : table_close(typrel, RowExclusiveLock);
2803 0 : return address;
2804 : }
2805 :
2806 24 : if (notNull)
2807 : {
2808 : Constraint *constr;
2809 :
2810 16 : constr = makeNode(Constraint);
2811 16 : constr->contype = CONSTR_NOTNULL;
2812 16 : constr->initially_valid = true;
2813 16 : constr->location = -1;
2814 :
2815 16 : domainAddNotNullConstraint(domainoid, typTup->typnamespace,
2816 : typTup->typbasetype, typTup->typtypmod,
2817 16 : constr, NameStr(typTup->typname), NULL);
2818 :
2819 16 : validateDomainNotNullConstraint(domainoid);
2820 : }
2821 : else
2822 : {
2823 : HeapTuple conTup;
2824 : ObjectAddress conobj;
2825 :
2826 8 : conTup = findDomainNotNullConstraint(domainoid);
2827 8 : if (conTup == NULL)
2828 0 : elog(ERROR, "could not find not-null constraint on domain \"%s\"", NameStr(typTup->typname));
2829 :
2830 8 : ObjectAddressSet(conobj, ConstraintRelationId, ((Form_pg_constraint) GETSTRUCT(conTup))->oid);
2831 8 : performDeletion(&conobj, DROP_RESTRICT, 0);
2832 : }
2833 :
2834 : /*
2835 : * Okay to update pg_type row. We can scribble on typTup because it's a
2836 : * copy.
2837 : */
2838 16 : typTup->typnotnull = notNull;
2839 :
2840 16 : CatalogTupleUpdate(typrel, &tup->t_self, tup);
2841 :
2842 16 : InvokeObjectPostAlterHook(TypeRelationId, domainoid, 0);
2843 :
2844 16 : ObjectAddressSet(address, TypeRelationId, domainoid);
2845 :
2846 : /* Clean up */
2847 16 : heap_freetuple(tup);
2848 16 : table_close(typrel, RowExclusiveLock);
2849 :
2850 16 : return address;
2851 : }
2852 :
2853 : /*
2854 : * AlterDomainDropConstraint
2855 : *
2856 : * Implements the ALTER DOMAIN DROP CONSTRAINT statement
2857 : *
2858 : * Returns ObjectAddress of the modified domain.
2859 : */
2860 : ObjectAddress
2861 40 : AlterDomainDropConstraint(List *names, const char *constrName,
2862 : DropBehavior behavior, bool missing_ok)
2863 : {
2864 : TypeName *typename;
2865 : Oid domainoid;
2866 : HeapTuple tup;
2867 : Relation rel;
2868 : Relation conrel;
2869 : SysScanDesc conscan;
2870 : ScanKeyData skey[3];
2871 : HeapTuple contup;
2872 40 : bool found = false;
2873 : ObjectAddress address;
2874 :
2875 : /* Make a TypeName so we can use standard type lookup machinery */
2876 40 : typename = makeTypeNameFromNameList(names);
2877 40 : domainoid = typenameTypeId(NULL, typename);
2878 :
2879 : /* Look up the domain in the type table */
2880 40 : rel = table_open(TypeRelationId, RowExclusiveLock);
2881 :
2882 40 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2883 40 : if (!HeapTupleIsValid(tup))
2884 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2885 :
2886 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2887 40 : checkDomainOwner(tup);
2888 :
2889 : /* Grab an appropriate lock on the pg_constraint relation */
2890 40 : conrel = table_open(ConstraintRelationId, RowExclusiveLock);
2891 :
2892 : /* Find and remove the target constraint */
2893 40 : ScanKeyInit(&skey[0],
2894 : Anum_pg_constraint_conrelid,
2895 : BTEqualStrategyNumber, F_OIDEQ,
2896 : ObjectIdGetDatum(InvalidOid));
2897 40 : ScanKeyInit(&skey[1],
2898 : Anum_pg_constraint_contypid,
2899 : BTEqualStrategyNumber, F_OIDEQ,
2900 : ObjectIdGetDatum(domainoid));
2901 40 : ScanKeyInit(&skey[2],
2902 : Anum_pg_constraint_conname,
2903 : BTEqualStrategyNumber, F_NAMEEQ,
2904 : CStringGetDatum(constrName));
2905 :
2906 40 : conscan = systable_beginscan(conrel, ConstraintRelidTypidNameIndexId, true,
2907 : NULL, 3, skey);
2908 :
2909 : /* There can be at most one matching row */
2910 40 : if ((contup = systable_getnext(conscan)) != NULL)
2911 : {
2912 32 : Form_pg_constraint construct = (Form_pg_constraint) GETSTRUCT(contup);
2913 : ObjectAddress conobj;
2914 :
2915 32 : if (construct->contype == CONSTRAINT_NOTNULL)
2916 : {
2917 8 : ((Form_pg_type) GETSTRUCT(tup))->typnotnull = false;
2918 8 : CatalogTupleUpdate(rel, &tup->t_self, tup);
2919 : }
2920 :
2921 32 : conobj.classId = ConstraintRelationId;
2922 32 : conobj.objectId = construct->oid;
2923 32 : conobj.objectSubId = 0;
2924 :
2925 32 : performDeletion(&conobj, behavior, 0);
2926 32 : found = true;
2927 : }
2928 :
2929 : /* Clean up after the scan */
2930 40 : systable_endscan(conscan);
2931 40 : table_close(conrel, RowExclusiveLock);
2932 :
2933 40 : if (!found)
2934 : {
2935 8 : if (!missing_ok)
2936 4 : ereport(ERROR,
2937 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2938 : errmsg("constraint \"%s\" of domain \"%s\" does not exist",
2939 : constrName, TypeNameToString(typename))));
2940 : else
2941 4 : ereport(NOTICE,
2942 : (errmsg("constraint \"%s\" of domain \"%s\" does not exist, skipping",
2943 : constrName, TypeNameToString(typename))));
2944 : }
2945 :
2946 : /*
2947 : * We must send out an sinval message for the domain, to ensure that any
2948 : * dependent plans get rebuilt. Since this command doesn't change the
2949 : * domain's pg_type row, that won't happen automatically; do it manually.
2950 : */
2951 36 : CacheInvalidateHeapTuple(rel, tup, NULL);
2952 :
2953 36 : ObjectAddressSet(address, TypeRelationId, domainoid);
2954 :
2955 : /* Clean up */
2956 36 : table_close(rel, RowExclusiveLock);
2957 :
2958 36 : return address;
2959 : }
2960 :
2961 : /*
2962 : * AlterDomainAddConstraint
2963 : *
2964 : * Implements the ALTER DOMAIN .. ADD CONSTRAINT statement.
2965 : */
2966 : ObjectAddress
2967 120 : AlterDomainAddConstraint(List *names, Node *newConstraint,
2968 : ObjectAddress *constrAddr)
2969 : {
2970 : TypeName *typename;
2971 : Oid domainoid;
2972 : Relation typrel;
2973 : HeapTuple tup;
2974 : Form_pg_type typTup;
2975 : Constraint *constr;
2976 : char *ccbin;
2977 120 : ObjectAddress address = InvalidObjectAddress;
2978 :
2979 : /* Make a TypeName so we can use standard type lookup machinery */
2980 120 : typename = makeTypeNameFromNameList(names);
2981 120 : domainoid = typenameTypeId(NULL, typename);
2982 :
2983 : /* Look up the domain in the type table */
2984 120 : typrel = table_open(TypeRelationId, RowExclusiveLock);
2985 :
2986 120 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(domainoid));
2987 120 : if (!HeapTupleIsValid(tup))
2988 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
2989 120 : typTup = (Form_pg_type) GETSTRUCT(tup);
2990 :
2991 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
2992 120 : checkDomainOwner(tup);
2993 :
2994 120 : if (!IsA(newConstraint, Constraint))
2995 0 : elog(ERROR, "unrecognized node type: %d",
2996 : (int) nodeTag(newConstraint));
2997 :
2998 120 : constr = (Constraint *) newConstraint;
2999 :
3000 : /* enforced by parser */
3001 : Assert(constr->contype == CONSTR_CHECK || constr->contype == CONSTR_NOTNULL);
3002 :
3003 120 : if (constr->contype == CONSTR_CHECK)
3004 : {
3005 : /*
3006 : * First, process the constraint expression and add an entry to
3007 : * pg_constraint.
3008 : */
3009 :
3010 100 : ccbin = domainAddCheckConstraint(domainoid, typTup->typnamespace,
3011 : typTup->typbasetype, typTup->typtypmod,
3012 100 : constr, NameStr(typTup->typname), constrAddr);
3013 :
3014 :
3015 : /*
3016 : * If requested to validate the constraint, test all values stored in
3017 : * the attributes based on the domain the constraint is being added
3018 : * to.
3019 : */
3020 96 : if (!constr->skip_validation)
3021 87 : validateDomainCheckConstraint(domainoid, ccbin, ShareLock);
3022 :
3023 : /*
3024 : * We must send out an sinval message for the domain, to ensure that
3025 : * any dependent plans get rebuilt. Since this command doesn't change
3026 : * the domain's pg_type row, that won't happen automatically; do it
3027 : * manually.
3028 : */
3029 56 : CacheInvalidateHeapTuple(typrel, tup, NULL);
3030 : }
3031 20 : else if (constr->contype == CONSTR_NOTNULL)
3032 : {
3033 : /* Is the domain already set NOT NULL? */
3034 20 : if (typTup->typnotnull)
3035 : {
3036 4 : table_close(typrel, RowExclusiveLock);
3037 4 : return address;
3038 : }
3039 16 : domainAddNotNullConstraint(domainoid, typTup->typnamespace,
3040 : typTup->typbasetype, typTup->typtypmod,
3041 16 : constr, NameStr(typTup->typname), constrAddr);
3042 :
3043 16 : if (!constr->skip_validation)
3044 16 : validateDomainNotNullConstraint(domainoid);
3045 :
3046 8 : typTup->typnotnull = true;
3047 8 : CatalogTupleUpdate(typrel, &tup->t_self, tup);
3048 : }
3049 :
3050 64 : ObjectAddressSet(address, TypeRelationId, domainoid);
3051 :
3052 : /* Clean up */
3053 64 : table_close(typrel, RowExclusiveLock);
3054 :
3055 64 : return address;
3056 : }
3057 :
3058 : /*
3059 : * AlterDomainValidateConstraint
3060 : *
3061 : * Implements the ALTER DOMAIN .. VALIDATE CONSTRAINT statement.
3062 : *
3063 : * Return value is the address of the validated constraint. If the constraint
3064 : * was already validated, InvalidObjectAddress is returned.
3065 : */
3066 : ObjectAddress
3067 8 : AlterDomainValidateConstraint(List *names, const char *constrName)
3068 : {
3069 : TypeName *typename;
3070 : Oid domainoid;
3071 : Relation typrel;
3072 : Relation conrel;
3073 : HeapTuple tup;
3074 : Form_pg_constraint con;
3075 : Form_pg_constraint copy_con;
3076 : char *conbin;
3077 : SysScanDesc scan;
3078 : Datum val;
3079 : HeapTuple tuple;
3080 : HeapTuple copyTuple;
3081 : ScanKeyData skey[3];
3082 8 : ObjectAddress address = InvalidObjectAddress;
3083 :
3084 : /* Make a TypeName so we can use standard type lookup machinery */
3085 8 : typename = makeTypeNameFromNameList(names);
3086 8 : domainoid = typenameTypeId(NULL, typename);
3087 :
3088 : /* Look up the domain in the type table */
3089 8 : typrel = table_open(TypeRelationId, AccessShareLock);
3090 :
3091 8 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(domainoid));
3092 8 : if (!HeapTupleIsValid(tup))
3093 0 : elog(ERROR, "cache lookup failed for type %u", domainoid);
3094 :
3095 : /* Check it's a domain and check user has permission for ALTER DOMAIN */
3096 8 : checkDomainOwner(tup);
3097 :
3098 : /*
3099 : * Find and check the target constraint
3100 : */
3101 8 : conrel = table_open(ConstraintRelationId, RowExclusiveLock);
3102 :
3103 8 : ScanKeyInit(&skey[0],
3104 : Anum_pg_constraint_conrelid,
3105 : BTEqualStrategyNumber, F_OIDEQ,
3106 : ObjectIdGetDatum(InvalidOid));
3107 8 : ScanKeyInit(&skey[1],
3108 : Anum_pg_constraint_contypid,
3109 : BTEqualStrategyNumber, F_OIDEQ,
3110 : ObjectIdGetDatum(domainoid));
3111 8 : ScanKeyInit(&skey[2],
3112 : Anum_pg_constraint_conname,
3113 : BTEqualStrategyNumber, F_NAMEEQ,
3114 : CStringGetDatum(constrName));
3115 :
3116 8 : scan = systable_beginscan(conrel, ConstraintRelidTypidNameIndexId, true,
3117 : NULL, 3, skey);
3118 :
3119 : /* There can be at most one matching row */
3120 8 : if (!HeapTupleIsValid(tuple = systable_getnext(scan)))
3121 0 : ereport(ERROR,
3122 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3123 : errmsg("constraint \"%s\" of domain \"%s\" does not exist",
3124 : constrName, TypeNameToString(typename))));
3125 :
3126 8 : con = (Form_pg_constraint) GETSTRUCT(tuple);
3127 8 : if (con->contype != CONSTRAINT_CHECK)
3128 0 : ereport(ERROR,
3129 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3130 : errmsg("constraint \"%s\" of domain \"%s\" is not a check constraint",
3131 : constrName, TypeNameToString(typename))));
3132 :
3133 8 : if (!con->convalidated)
3134 : {
3135 8 : val = SysCacheGetAttrNotNull(CONSTROID, tuple, Anum_pg_constraint_conbin);
3136 8 : conbin = TextDatumGetCString(val);
3137 :
3138 : /*
3139 : * Locking related relations with ShareUpdateExclusiveLock is ok
3140 : * because not-yet-valid constraints are still enforced against
3141 : * concurrent inserts or updates.
3142 : */
3143 8 : validateDomainCheckConstraint(domainoid, conbin, ShareUpdateExclusiveLock);
3144 :
3145 : /*
3146 : * Now update the catalog, while we have the door open.
3147 : */
3148 4 : copyTuple = heap_copytuple(tuple);
3149 4 : copy_con = (Form_pg_constraint) GETSTRUCT(copyTuple);
3150 4 : copy_con->convalidated = true;
3151 4 : CatalogTupleUpdate(conrel, ©Tuple->t_self, copyTuple);
3152 :
3153 4 : InvokeObjectPostAlterHook(ConstraintRelationId, con->oid, 0);
3154 :
3155 4 : ObjectAddressSet(address, TypeRelationId, domainoid);
3156 :
3157 4 : heap_freetuple(copyTuple);
3158 : }
3159 :
3160 4 : systable_endscan(scan);
3161 :
3162 4 : table_close(typrel, AccessShareLock);
3163 4 : table_close(conrel, RowExclusiveLock);
3164 :
3165 4 : ReleaseSysCache(tup);
3166 :
3167 4 : return address;
3168 : }
3169 :
3170 : /*
3171 : * Verify that all columns currently using the domain are not null.
3172 : */
3173 : static void
3174 32 : validateDomainNotNullConstraint(Oid domainoid)
3175 : {
3176 : List *rels;
3177 : ListCell *rt;
3178 :
3179 : /* Fetch relation list with attributes based on this domain */
3180 : /* ShareLock is sufficient to prevent concurrent data changes */
3181 :
3182 32 : rels = get_rels_with_domain(domainoid, ShareLock);
3183 :
3184 44 : foreach(rt, rels)
3185 : {
3186 28 : RelToCheck *rtc = (RelToCheck *) lfirst(rt);
3187 28 : Relation testrel = rtc->rel;
3188 28 : TupleDesc tupdesc = RelationGetDescr(testrel);
3189 : TupleTableSlot *slot;
3190 : TableScanDesc scan;
3191 : Snapshot snapshot;
3192 :
3193 : /* Scan all tuples in this relation */
3194 28 : snapshot = RegisterSnapshot(GetLatestSnapshot());
3195 28 : scan = table_beginscan(testrel, snapshot, 0, NULL,
3196 : SO_NONE);
3197 28 : slot = table_slot_create(testrel, NULL);
3198 40 : while (table_scan_getnextslot(scan, ForwardScanDirection, slot))
3199 : {
3200 : int i;
3201 :
3202 : /* Test attributes that are of the domain */
3203 60 : for (i = 0; i < rtc->natts; i++)
3204 : {
3205 48 : int attnum = rtc->atts[i];
3206 48 : Form_pg_attribute attr = TupleDescAttr(tupdesc, attnum - 1);
3207 :
3208 48 : if (slot_attisnull(slot, attnum))
3209 : {
3210 : /*
3211 : * In principle the auxiliary information for this error
3212 : * should be errdatatype(), but errtablecol() seems
3213 : * considerably more useful in practice. Since this code
3214 : * only executes in an ALTER DOMAIN command, the client
3215 : * should already know which domain is in question.
3216 : */
3217 16 : ereport(ERROR,
3218 : (errcode(ERRCODE_NOT_NULL_VIOLATION),
3219 : errmsg("column \"%s\" of table \"%s\" contains null values",
3220 : NameStr(attr->attname),
3221 : RelationGetRelationName(testrel)),
3222 : errtablecol(testrel, attnum)));
3223 : }
3224 : }
3225 : }
3226 12 : ExecDropSingleTupleTableSlot(slot);
3227 12 : table_endscan(scan);
3228 12 : UnregisterSnapshot(snapshot);
3229 :
3230 : /* Close each rel after processing, but keep lock */
3231 12 : table_close(testrel, NoLock);
3232 : }
3233 16 : }
3234 :
3235 : /*
3236 : * Verify that all columns currently using the domain satisfy the given check
3237 : * constraint expression.
3238 : *
3239 : * It is used to validate existing constraints and to add newly created check
3240 : * constraints to a domain.
3241 : *
3242 : * The lockmode is used for relations using the domain. It should be
3243 : * ShareLock when adding a new constraint to domain. It can be
3244 : * ShareUpdateExclusiveLock when validating an existing constraint.
3245 : */
3246 : static void
3247 95 : validateDomainCheckConstraint(Oid domainoid, const char *ccbin, LOCKMODE lockmode)
3248 : {
3249 95 : Expr *expr = (Expr *) stringToNode(ccbin);
3250 : List *rels;
3251 : ListCell *rt;
3252 : EState *estate;
3253 : ExprContext *econtext;
3254 : ExprState *exprstate;
3255 :
3256 : /* Need an EState to run ExecEvalExpr */
3257 95 : estate = CreateExecutorState();
3258 95 : econtext = GetPerTupleExprContext(estate);
3259 :
3260 : /* build execution state for expr */
3261 95 : exprstate = ExecPrepareExpr(expr, estate);
3262 :
3263 : /* Fetch relation list with attributes based on this domain */
3264 95 : rels = get_rels_with_domain(domainoid, lockmode);
3265 :
3266 99 : foreach(rt, rels)
3267 : {
3268 48 : RelToCheck *rtc = (RelToCheck *) lfirst(rt);
3269 48 : Relation testrel = rtc->rel;
3270 48 : TupleDesc tupdesc = RelationGetDescr(testrel);
3271 : TupleTableSlot *slot;
3272 : TableScanDesc scan;
3273 : Snapshot snapshot;
3274 :
3275 : /* Scan all tuples in this relation */
3276 48 : snapshot = RegisterSnapshot(GetLatestSnapshot());
3277 48 : scan = table_beginscan(testrel, snapshot, 0, NULL,
3278 : SO_NONE);
3279 48 : slot = table_slot_create(testrel, NULL);
3280 112 : while (table_scan_getnextslot(scan, ForwardScanDirection, slot))
3281 : {
3282 : int i;
3283 :
3284 : /* Test attributes that are of the domain */
3285 152 : for (i = 0; i < rtc->natts; i++)
3286 : {
3287 88 : int attnum = rtc->atts[i];
3288 : Datum d;
3289 : bool isNull;
3290 : Datum conResult;
3291 :
3292 88 : d = slot_getattr(slot, attnum, &isNull);
3293 :
3294 88 : econtext->domainValue_datum = d;
3295 88 : econtext->domainValue_isNull = isNull;
3296 :
3297 88 : conResult = ExecEvalExprSwitchContext(exprstate,
3298 : econtext,
3299 : &isNull);
3300 :
3301 88 : if (!isNull && !DatumGetBool(conResult))
3302 : {
3303 24 : Form_pg_attribute attr = TupleDescAttr(tupdesc, attnum - 1);
3304 :
3305 : /*
3306 : * In principle the auxiliary information for this error
3307 : * should be errdomainconstraint(), but errtablecol()
3308 : * seems considerably more useful in practice. Since this
3309 : * code only executes in an ALTER DOMAIN command, the
3310 : * client should already know which domain is in question,
3311 : * and which constraint too.
3312 : */
3313 24 : ereport(ERROR,
3314 : (errcode(ERRCODE_CHECK_VIOLATION),
3315 : errmsg("column \"%s\" of table \"%s\" contains values that violate the new constraint",
3316 : NameStr(attr->attname),
3317 : RelationGetRelationName(testrel)),
3318 : errtablecol(testrel, attnum)));
3319 : }
3320 : }
3321 :
3322 64 : ResetExprContext(econtext);
3323 : }
3324 24 : ExecDropSingleTupleTableSlot(slot);
3325 24 : table_endscan(scan);
3326 24 : UnregisterSnapshot(snapshot);
3327 :
3328 : /* Hold relation lock till commit (XXX bad for concurrency) */
3329 24 : table_close(testrel, NoLock);
3330 : }
3331 :
3332 51 : FreeExecutorState(estate);
3333 51 : }
3334 :
3335 : /*
3336 : * get_rels_with_domain
3337 : *
3338 : * Fetch all relations / attributes which are using the domain
3339 : *
3340 : * The result is a list of RelToCheck structs, one for each distinct
3341 : * relation, each containing one or more attribute numbers that are of
3342 : * the domain type. We have opened each rel and acquired the specified lock
3343 : * type on it.
3344 : *
3345 : * We support nested domains by including attributes that are of derived
3346 : * domain types. Current callers do not need to distinguish between attributes
3347 : * that are of exactly the given domain and those that are of derived domains.
3348 : *
3349 : * XXX this is completely broken because there is no way to lock the domain
3350 : * to prevent columns from being added or dropped while our command runs.
3351 : * We can partially protect against column drops by locking relations as we
3352 : * come across them, but there is still a race condition (the window between
3353 : * seeing a pg_depend entry and acquiring lock on the relation it references).
3354 : * Also, holding locks on all these relations simultaneously creates a non-
3355 : * trivial risk of deadlock. We can minimize but not eliminate the deadlock
3356 : * risk by using the weakest suitable lock (ShareLock for most callers).
3357 : *
3358 : * XXX the API for this is not sufficient to support checking domain values
3359 : * that are inside container types, such as composite types, arrays, or
3360 : * ranges. Currently we just error out if a container type containing the
3361 : * target domain is stored anywhere.
3362 : *
3363 : * Generally used for retrieving a list of tests when adding
3364 : * new constraints to a domain.
3365 : */
3366 : static List *
3367 135 : get_rels_with_domain(Oid domainOid, LOCKMODE lockmode)
3368 : {
3369 135 : List *result = NIL;
3370 135 : char *domainTypeName = format_type_be(domainOid);
3371 : Relation depRel;
3372 : ScanKeyData key[2];
3373 : SysScanDesc depScan;
3374 : HeapTuple depTup;
3375 :
3376 : Assert(lockmode != NoLock);
3377 :
3378 : /* since this function recurses, it could be driven to stack overflow */
3379 135 : check_stack_depth();
3380 :
3381 : /*
3382 : * We scan pg_depend to find those things that depend on the domain. (We
3383 : * assume we can ignore refobjsubid for a domain.)
3384 : */
3385 135 : depRel = table_open(DependRelationId, AccessShareLock);
3386 :
3387 135 : ScanKeyInit(&key[0],
3388 : Anum_pg_depend_refclassid,
3389 : BTEqualStrategyNumber, F_OIDEQ,
3390 : ObjectIdGetDatum(TypeRelationId));
3391 135 : ScanKeyInit(&key[1],
3392 : Anum_pg_depend_refobjid,
3393 : BTEqualStrategyNumber, F_OIDEQ,
3394 : ObjectIdGetDatum(domainOid));
3395 :
3396 135 : depScan = systable_beginscan(depRel, DependReferenceIndexId, true,
3397 : NULL, 2, key);
3398 :
3399 467 : while (HeapTupleIsValid(depTup = systable_getnext(depScan)))
3400 : {
3401 352 : Form_pg_depend pg_depend = (Form_pg_depend) GETSTRUCT(depTup);
3402 352 : RelToCheck *rtc = NULL;
3403 : ListCell *rellist;
3404 : Form_pg_attribute pg_att;
3405 : int ptr;
3406 :
3407 : /* Check for directly dependent types */
3408 352 : if (pg_depend->classid == TypeRelationId)
3409 : {
3410 147 : if (get_typtype(pg_depend->objid) == TYPTYPE_DOMAIN)
3411 : {
3412 : /*
3413 : * This is a sub-domain, so recursively add dependent columns
3414 : * to the output list. This is a bit inefficient since we may
3415 : * fail to combine RelToCheck entries when attributes of the
3416 : * same rel have different derived domain types, but it's
3417 : * probably not worth improving.
3418 : */
3419 8 : result = list_concat(result,
3420 8 : get_rels_with_domain(pg_depend->objid,
3421 : lockmode));
3422 : }
3423 : else
3424 : {
3425 : /*
3426 : * Otherwise, it is some container type using the domain, so
3427 : * fail if there are any columns of this type.
3428 : */
3429 139 : find_composite_type_dependencies(pg_depend->objid,
3430 : NULL,
3431 : domainTypeName);
3432 : }
3433 143 : continue;
3434 : }
3435 :
3436 : /* Else, ignore dependees that aren't user columns of relations */
3437 : /* (we assume system columns are never of domain types) */
3438 205 : if (pg_depend->classid != RelationRelationId ||
3439 144 : pg_depend->objsubid <= 0)
3440 61 : continue;
3441 :
3442 : /* See if we already have an entry for this relation */
3443 144 : foreach(rellist, result)
3444 : {
3445 28 : RelToCheck *rt = (RelToCheck *) lfirst(rellist);
3446 :
3447 28 : if (RelationGetRelid(rt->rel) == pg_depend->objid)
3448 : {
3449 28 : rtc = rt;
3450 28 : break;
3451 : }
3452 : }
3453 :
3454 144 : if (rtc == NULL)
3455 : {
3456 : /* First attribute found for this relation */
3457 : Relation rel;
3458 :
3459 : /* Acquire requested lock on relation */
3460 116 : rel = relation_open(pg_depend->objid, lockmode);
3461 :
3462 : /*
3463 : * Check to see if rowtype is stored anyplace as a composite-type
3464 : * column; if so we have to fail, for now anyway.
3465 : */
3466 116 : if (OidIsValid(rel->rd_rel->reltype))
3467 116 : find_composite_type_dependencies(rel->rd_rel->reltype,
3468 : NULL,
3469 : domainTypeName);
3470 :
3471 : /*
3472 : * Otherwise, we can ignore relations except those with both
3473 : * storage and user-chosen column types.
3474 : *
3475 : * XXX If an index-only scan could satisfy "col::some_domain" from
3476 : * a suitable expression index, this should also check expression
3477 : * index columns.
3478 : */
3479 100 : if (rel->rd_rel->relkind != RELKIND_RELATION &&
3480 24 : rel->rd_rel->relkind != RELKIND_MATVIEW)
3481 : {
3482 24 : relation_close(rel, lockmode);
3483 24 : continue;
3484 : }
3485 :
3486 : /* Build the RelToCheck entry with enough space for all atts */
3487 76 : rtc = palloc_object(RelToCheck);
3488 76 : rtc->rel = rel;
3489 76 : rtc->natts = 0;
3490 76 : rtc->atts = palloc_array(int, RelationGetNumberOfAttributes(rel));
3491 76 : result = lappend(result, rtc);
3492 : }
3493 :
3494 : /*
3495 : * Confirm column has not been dropped, and is of the expected type.
3496 : * This defends against an ALTER DROP COLUMN occurring just before we
3497 : * acquired lock ... but if the whole table were dropped, we'd still
3498 : * have a problem.
3499 : */
3500 104 : if (pg_depend->objsubid > RelationGetNumberOfAttributes(rtc->rel))
3501 0 : continue;
3502 104 : pg_att = TupleDescAttr(rtc->rel->rd_att, pg_depend->objsubid - 1);
3503 104 : if (pg_att->attisdropped || pg_att->atttypid != domainOid)
3504 0 : continue;
3505 :
3506 : /*
3507 : * Okay, add column to result. We store the columns in column-number
3508 : * order; this is just a hack to improve predictability of regression
3509 : * test output ...
3510 : */
3511 : Assert(rtc->natts < RelationGetNumberOfAttributes(rtc->rel));
3512 :
3513 104 : ptr = rtc->natts++;
3514 104 : while (ptr > 0 && rtc->atts[ptr - 1] > pg_depend->objsubid)
3515 : {
3516 0 : rtc->atts[ptr] = rtc->atts[ptr - 1];
3517 0 : ptr--;
3518 : }
3519 104 : rtc->atts[ptr] = pg_depend->objsubid;
3520 : }
3521 :
3522 115 : systable_endscan(depScan);
3523 :
3524 115 : relation_close(depRel, AccessShareLock);
3525 :
3526 115 : return result;
3527 : }
3528 :
3529 : /*
3530 : * checkDomainOwner
3531 : *
3532 : * Check that the type is actually a domain and that the current user
3533 : * has permission to do ALTER DOMAIN on it. Throw an error if not.
3534 : */
3535 : void
3536 205 : checkDomainOwner(HeapTuple tup)
3537 : {
3538 205 : Form_pg_type typTup = (Form_pg_type) GETSTRUCT(tup);
3539 :
3540 : /* Check that this is actually a domain */
3541 205 : if (typTup->typtype != TYPTYPE_DOMAIN)
3542 0 : ereport(ERROR,
3543 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3544 : errmsg("%s is not a domain",
3545 : format_type_be(typTup->oid))));
3546 :
3547 : /* Permission check: must own type */
3548 205 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
3549 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
3550 205 : }
3551 :
3552 : /*
3553 : * domainAddCheckConstraint - code shared between CREATE and ALTER DOMAIN
3554 : */
3555 : static char *
3556 507 : domainAddCheckConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
3557 : int typMod, Constraint *constr,
3558 : const char *domainName, ObjectAddress *constrAddr)
3559 : {
3560 : Node *expr;
3561 : char *ccbin;
3562 : ParseState *pstate;
3563 : CoerceToDomainValue *domVal;
3564 : Oid ccoid;
3565 :
3566 : Assert(constr->contype == CONSTR_CHECK);
3567 :
3568 : /*
3569 : * Assign or validate constraint name
3570 : */
3571 507 : if (constr->conname)
3572 : {
3573 243 : if (ConstraintNameIsUsed(CONSTRAINT_DOMAIN,
3574 : domainOid,
3575 243 : constr->conname))
3576 0 : ereport(ERROR,
3577 : (errcode(ERRCODE_DUPLICATE_OBJECT),
3578 : errmsg("constraint \"%s\" for domain \"%s\" already exists",
3579 : constr->conname, domainName)));
3580 : }
3581 : else
3582 264 : constr->conname = ChooseConstraintName(domainName,
3583 : NULL,
3584 : "check",
3585 : domainNamespace,
3586 : NIL);
3587 :
3588 : /*
3589 : * Convert the A_EXPR in raw_expr into an EXPR
3590 : */
3591 507 : pstate = make_parsestate(NULL);
3592 :
3593 : /*
3594 : * Set up a CoerceToDomainValue to represent the occurrence of VALUE in
3595 : * the expression. Note that it will appear to have the type of the base
3596 : * type, not the domain. This seems correct since within the check
3597 : * expression, we should not assume the input value can be considered a
3598 : * member of the domain.
3599 : */
3600 507 : domVal = makeNode(CoerceToDomainValue);
3601 507 : domVal->typeId = baseTypeOid;
3602 507 : domVal->typeMod = typMod;
3603 507 : domVal->collation = get_typcollation(baseTypeOid);
3604 507 : domVal->location = -1; /* will be set when/if used */
3605 :
3606 507 : pstate->p_pre_columnref_hook = replace_domain_constraint_value;
3607 507 : pstate->p_ref_hook_state = domVal;
3608 :
3609 507 : expr = transformExpr(pstate, constr->raw_expr, EXPR_KIND_DOMAIN_CHECK);
3610 :
3611 : /*
3612 : * Make sure it yields a boolean result.
3613 : */
3614 503 : expr = coerce_to_boolean(pstate, expr, "CHECK");
3615 :
3616 : /*
3617 : * Fix up collation information.
3618 : */
3619 503 : assign_expr_collations(pstate, expr);
3620 :
3621 : /*
3622 : * Domains don't allow variables (this is probably dead code now that
3623 : * add_missing_from is history, but let's be sure).
3624 : */
3625 1006 : if (pstate->p_rtable != NIL ||
3626 503 : contain_var_clause(expr))
3627 0 : ereport(ERROR,
3628 : (errcode(ERRCODE_INVALID_COLUMN_REFERENCE),
3629 : errmsg("cannot use table references in domain check constraint")));
3630 :
3631 : /*
3632 : * Convert to string form for storage.
3633 : */
3634 503 : ccbin = nodeToString(expr);
3635 :
3636 : /*
3637 : * Store the constraint in pg_constraint
3638 : */
3639 : ccoid =
3640 503 : CreateConstraintEntry(constr->conname, /* Constraint Name */
3641 : domainNamespace, /* namespace */
3642 : CONSTRAINT_CHECK, /* Constraint Type */
3643 : false, /* Is Deferrable */
3644 : false, /* Is Deferred */
3645 : true, /* Is Enforced */
3646 503 : !constr->skip_validation, /* Is Validated */
3647 : InvalidOid, /* no parent constraint */
3648 : InvalidOid, /* not a relation constraint */
3649 : NULL,
3650 : 0,
3651 : 0,
3652 : domainOid, /* domain constraint */
3653 : InvalidOid, /* no associated index */
3654 : InvalidOid, /* Foreign key fields */
3655 : NULL,
3656 : NULL,
3657 : NULL,
3658 : NULL,
3659 : 0,
3660 : ' ',
3661 : ' ',
3662 : NULL,
3663 : 0,
3664 : ' ',
3665 : NULL, /* not an exclusion constraint */
3666 : expr, /* Tree form of check constraint */
3667 : ccbin, /* Binary form of check constraint */
3668 : true, /* is local */
3669 : 0, /* inhcount */
3670 : false, /* connoinherit */
3671 : false, /* conperiod */
3672 503 : false); /* is_internal */
3673 503 : if (constrAddr)
3674 91 : ObjectAddressSet(*constrAddr, ConstraintRelationId, ccoid);
3675 :
3676 : /*
3677 : * Return the compiled constraint expression so the calling routine can
3678 : * perform any additional required tests.
3679 : */
3680 503 : return ccbin;
3681 : }
3682 :
3683 : /* Parser pre_columnref_hook for domain CHECK constraint parsing */
3684 : static Node *
3685 571 : replace_domain_constraint_value(ParseState *pstate, ColumnRef *cref)
3686 : {
3687 : /*
3688 : * Check for a reference to "value", and if that's what it is, replace
3689 : * with a CoerceToDomainValue as prepared for us by
3690 : * domainAddCheckConstraint. (We handle VALUE as a name, not a keyword, to
3691 : * avoid breaking a lot of applications that have used VALUE as a column
3692 : * name in the past.)
3693 : */
3694 571 : if (list_length(cref->fields) == 1)
3695 : {
3696 571 : Node *field1 = (Node *) linitial(cref->fields);
3697 : char *colname;
3698 :
3699 571 : colname = strVal(field1);
3700 571 : if (strcmp(colname, "value") == 0)
3701 : {
3702 571 : CoerceToDomainValue *domVal = copyObject(pstate->p_ref_hook_state);
3703 :
3704 : /* Propagate location knowledge, if any */
3705 571 : domVal->location = cref->location;
3706 571 : return (Node *) domVal;
3707 : }
3708 : }
3709 0 : return NULL;
3710 : }
3711 :
3712 : /*
3713 : * domainAddNotNullConstraint - code shared between CREATE and ALTER DOMAIN
3714 : */
3715 : static void
3716 92 : domainAddNotNullConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
3717 : int typMod, Constraint *constr,
3718 : const char *domainName, ObjectAddress *constrAddr)
3719 : {
3720 : Oid ccoid;
3721 :
3722 : Assert(constr->contype == CONSTR_NOTNULL);
3723 :
3724 : /*
3725 : * Assign or validate constraint name
3726 : */
3727 92 : if (constr->conname)
3728 : {
3729 9 : if (ConstraintNameIsUsed(CONSTRAINT_DOMAIN,
3730 : domainOid,
3731 9 : constr->conname))
3732 0 : ereport(ERROR,
3733 : (errcode(ERRCODE_DUPLICATE_OBJECT),
3734 : errmsg("constraint \"%s\" for domain \"%s\" already exists",
3735 : constr->conname, domainName)));
3736 : }
3737 : else
3738 83 : constr->conname = ChooseConstraintName(domainName,
3739 : NULL,
3740 : "not_null",
3741 : domainNamespace,
3742 : NIL);
3743 :
3744 : /*
3745 : * Store the constraint in pg_constraint
3746 : */
3747 : ccoid =
3748 92 : CreateConstraintEntry(constr->conname, /* Constraint Name */
3749 : domainNamespace, /* namespace */
3750 : CONSTRAINT_NOTNULL, /* Constraint Type */
3751 : false, /* Is Deferrable */
3752 : false, /* Is Deferred */
3753 : true, /* Is Enforced */
3754 92 : !constr->skip_validation, /* Is Validated */
3755 : InvalidOid, /* no parent constraint */
3756 : InvalidOid, /* not a relation constraint */
3757 : NULL,
3758 : 0,
3759 : 0,
3760 : domainOid, /* domain constraint */
3761 : InvalidOid, /* no associated index */
3762 : InvalidOid, /* Foreign key fields */
3763 : NULL,
3764 : NULL,
3765 : NULL,
3766 : NULL,
3767 : 0,
3768 : ' ',
3769 : ' ',
3770 : NULL,
3771 : 0,
3772 : ' ',
3773 : NULL, /* not an exclusion constraint */
3774 : NULL,
3775 : NULL,
3776 : true, /* is local */
3777 : 0, /* inhcount */
3778 : false, /* connoinherit */
3779 : false, /* conperiod */
3780 92 : false); /* is_internal */
3781 :
3782 92 : if (constrAddr)
3783 16 : ObjectAddressSet(*constrAddr, ConstraintRelationId, ccoid);
3784 92 : }
3785 :
3786 :
3787 : /*
3788 : * Execute ALTER TYPE RENAME
3789 : */
3790 : ObjectAddress
3791 21 : RenameType(RenameStmt *stmt)
3792 : {
3793 21 : List *names = castNode(List, stmt->object);
3794 21 : const char *newTypeName = stmt->newname;
3795 : TypeName *typename;
3796 : Oid typeOid;
3797 : Relation rel;
3798 : HeapTuple tup;
3799 : Form_pg_type typTup;
3800 : ObjectAddress address;
3801 :
3802 : /* Make a TypeName so we can use standard type lookup machinery */
3803 21 : typename = makeTypeNameFromNameList(names);
3804 21 : typeOid = typenameTypeId(NULL, typename);
3805 :
3806 : /* Look up the type in the type table */
3807 21 : rel = table_open(TypeRelationId, RowExclusiveLock);
3808 :
3809 21 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
3810 21 : if (!HeapTupleIsValid(tup))
3811 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
3812 21 : typTup = (Form_pg_type) GETSTRUCT(tup);
3813 :
3814 : /* check permissions on type */
3815 21 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
3816 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
3817 :
3818 : /* ALTER DOMAIN used on a non-domain? */
3819 21 : if (stmt->renameType == OBJECT_DOMAIN && typTup->typtype != TYPTYPE_DOMAIN)
3820 0 : ereport(ERROR,
3821 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3822 : errmsg("%s is not a domain",
3823 : format_type_be(typeOid))));
3824 :
3825 : /*
3826 : * If it's a composite type, we need to check that it really is a
3827 : * free-standing composite type, and not a table's rowtype. We want people
3828 : * to use ALTER TABLE not ALTER TYPE for that case.
3829 : */
3830 22 : if (typTup->typtype == TYPTYPE_COMPOSITE &&
3831 1 : get_rel_relkind(typTup->typrelid) != RELKIND_COMPOSITE_TYPE)
3832 0 : ereport(ERROR,
3833 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3834 : errmsg("%s is a table's row type",
3835 : format_type_be(typeOid)),
3836 : /* translator: %s is an SQL ALTER command */
3837 : errhint("Use %s instead.",
3838 : "ALTER TABLE")));
3839 :
3840 : /* don't allow direct alteration of array types, either */
3841 21 : if (IsTrueArrayType(typTup))
3842 0 : ereport(ERROR,
3843 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3844 : errmsg("cannot alter array type %s",
3845 : format_type_be(typeOid)),
3846 : errhint("You can alter type %s, which will alter the array type as well.",
3847 : format_type_be(typTup->typelem))));
3848 :
3849 : /* we do allow separate renaming of multirange types, though */
3850 :
3851 : /*
3852 : * If type is composite we need to rename associated pg_class entry too.
3853 : * RenameRelationInternal will call RenameTypeInternal automatically.
3854 : */
3855 21 : if (typTup->typtype == TYPTYPE_COMPOSITE)
3856 1 : RenameRelationInternal(typTup->typrelid, newTypeName, false, false);
3857 : else
3858 20 : RenameTypeInternal(typeOid, newTypeName,
3859 : typTup->typnamespace);
3860 :
3861 21 : ObjectAddressSet(address, TypeRelationId, typeOid);
3862 : /* Clean up */
3863 21 : table_close(rel, RowExclusiveLock);
3864 :
3865 21 : return address;
3866 : }
3867 :
3868 : /*
3869 : * Change the owner of a type.
3870 : */
3871 : ObjectAddress
3872 73 : AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype)
3873 : {
3874 : TypeName *typename;
3875 : Oid typeOid;
3876 : Relation rel;
3877 : HeapTuple tup;
3878 : HeapTuple newtup;
3879 : Form_pg_type typTup;
3880 : AclResult aclresult;
3881 : ObjectAddress address;
3882 :
3883 73 : rel = table_open(TypeRelationId, RowExclusiveLock);
3884 :
3885 : /* Make a TypeName so we can use standard type lookup machinery */
3886 73 : typename = makeTypeNameFromNameList(names);
3887 :
3888 : /* Use LookupTypeName here so that shell types can be processed */
3889 73 : tup = LookupTypeName(NULL, typename, NULL, false);
3890 73 : if (tup == NULL)
3891 0 : ereport(ERROR,
3892 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3893 : errmsg("type \"%s\" does not exist",
3894 : TypeNameToString(typename))));
3895 73 : typeOid = typeTypeId(tup);
3896 :
3897 : /* Copy the syscache entry so we can scribble on it below */
3898 73 : newtup = heap_copytuple(tup);
3899 73 : ReleaseSysCache(tup);
3900 73 : tup = newtup;
3901 73 : typTup = (Form_pg_type) GETSTRUCT(tup);
3902 :
3903 : /* Don't allow ALTER DOMAIN on a type */
3904 73 : if (objecttype == OBJECT_DOMAIN && typTup->typtype != TYPTYPE_DOMAIN)
3905 0 : ereport(ERROR,
3906 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3907 : errmsg("%s is not a domain",
3908 : format_type_be(typeOid))));
3909 :
3910 : /*
3911 : * If it's a composite type, we need to check that it really is a
3912 : * free-standing composite type, and not a table's rowtype. We want people
3913 : * to use ALTER TABLE not ALTER TYPE for that case.
3914 : */
3915 89 : if (typTup->typtype == TYPTYPE_COMPOSITE &&
3916 16 : get_rel_relkind(typTup->typrelid) != RELKIND_COMPOSITE_TYPE)
3917 0 : ereport(ERROR,
3918 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3919 : errmsg("%s is a table's row type",
3920 : format_type_be(typeOid)),
3921 : /* translator: %s is an SQL ALTER command */
3922 : errhint("Use %s instead.",
3923 : "ALTER TABLE")));
3924 :
3925 : /* don't allow direct alteration of array types, either */
3926 73 : if (IsTrueArrayType(typTup))
3927 0 : ereport(ERROR,
3928 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3929 : errmsg("cannot alter array type %s",
3930 : format_type_be(typeOid)),
3931 : errhint("You can alter type %s, which will alter the array type as well.",
3932 : format_type_be(typTup->typelem))));
3933 :
3934 : /* don't allow direct alteration of multirange types, either */
3935 73 : if (typTup->typtype == TYPTYPE_MULTIRANGE)
3936 : {
3937 4 : Oid rangetype = get_multirange_range(typeOid);
3938 :
3939 : /* We don't expect get_multirange_range to fail, but cope if so */
3940 4 : ereport(ERROR,
3941 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
3942 : errmsg("cannot alter multirange type %s",
3943 : format_type_be(typeOid)),
3944 : OidIsValid(rangetype) ?
3945 : errhint("You can alter type %s, which will alter the multirange type as well.",
3946 : format_type_be(rangetype)) : 0));
3947 : }
3948 :
3949 : /*
3950 : * If the new owner is the same as the existing owner, consider the
3951 : * command to have succeeded. This is for dump restoration purposes.
3952 : */
3953 69 : if (typTup->typowner != newOwnerId)
3954 : {
3955 : /* Superusers can always do it */
3956 4 : if (!superuser())
3957 : {
3958 : /* Otherwise, must be owner of the existing object */
3959 0 : if (!object_ownercheck(TypeRelationId, typTup->oid, GetUserId()))
3960 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typTup->oid);
3961 :
3962 : /* Must be able to become new owner */
3963 0 : check_can_set_role(GetUserId(), newOwnerId);
3964 :
3965 : /* New owner must have CREATE privilege on namespace */
3966 0 : aclresult = object_aclcheck(NamespaceRelationId, typTup->typnamespace,
3967 : newOwnerId,
3968 : ACL_CREATE);
3969 0 : if (aclresult != ACLCHECK_OK)
3970 0 : aclcheck_error(aclresult, OBJECT_SCHEMA,
3971 0 : get_namespace_name(typTup->typnamespace));
3972 : }
3973 :
3974 4 : AlterTypeOwner_oid(typeOid, newOwnerId, true);
3975 : }
3976 :
3977 69 : ObjectAddressSet(address, TypeRelationId, typeOid);
3978 :
3979 : /* Clean up */
3980 69 : table_close(rel, RowExclusiveLock);
3981 :
3982 69 : return address;
3983 : }
3984 :
3985 : /*
3986 : * AlterTypeOwner_oid - change type owner unconditionally
3987 : *
3988 : * This function recurses to handle dependent types (arrays and multiranges).
3989 : * It invokes any necessary access object hooks. If hasDependEntry is true,
3990 : * this function modifies the pg_shdepend entry appropriately (this should be
3991 : * passed as false only for table rowtypes and dependent types).
3992 : *
3993 : * This is used by ALTER TABLE/TYPE OWNER commands, as well as by REASSIGN
3994 : * OWNED BY. It assumes the caller has done all needed checks.
3995 : */
3996 : void
3997 17 : AlterTypeOwner_oid(Oid typeOid, Oid newOwnerId, bool hasDependEntry)
3998 : {
3999 : Relation rel;
4000 : HeapTuple tup;
4001 : Form_pg_type typTup;
4002 :
4003 17 : rel = table_open(TypeRelationId, RowExclusiveLock);
4004 :
4005 17 : tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typeOid));
4006 17 : if (!HeapTupleIsValid(tup))
4007 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
4008 17 : typTup = (Form_pg_type) GETSTRUCT(tup);
4009 :
4010 : /*
4011 : * If it's a composite type, invoke ATExecChangeOwner so that we fix up
4012 : * the pg_class entry properly. That will call back to
4013 : * AlterTypeOwnerInternal to take care of the pg_type entry(s).
4014 : */
4015 17 : if (typTup->typtype == TYPTYPE_COMPOSITE)
4016 5 : ATExecChangeOwner(typTup->typrelid, newOwnerId, true, AccessExclusiveLock);
4017 : else
4018 12 : AlterTypeOwnerInternal(typeOid, newOwnerId);
4019 :
4020 : /* Update owner dependency reference */
4021 17 : if (hasDependEntry)
4022 17 : changeDependencyOnOwner(TypeRelationId, typeOid, newOwnerId);
4023 :
4024 17 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4025 :
4026 17 : ReleaseSysCache(tup);
4027 17 : table_close(rel, RowExclusiveLock);
4028 17 : }
4029 :
4030 : /*
4031 : * AlterTypeOwnerInternal - bare-bones type owner change.
4032 : *
4033 : * This routine simply modifies the owner of a pg_type entry, and recurses
4034 : * to handle any dependent types.
4035 : */
4036 : void
4037 526 : AlterTypeOwnerInternal(Oid typeOid, Oid newOwnerId)
4038 : {
4039 : Relation rel;
4040 : HeapTuple tup;
4041 : Form_pg_type typTup;
4042 : Datum repl_val[Natts_pg_type];
4043 : bool repl_null[Natts_pg_type];
4044 : bool repl_repl[Natts_pg_type];
4045 : Acl *newAcl;
4046 : Datum aclDatum;
4047 : bool isNull;
4048 :
4049 526 : rel = table_open(TypeRelationId, RowExclusiveLock);
4050 :
4051 526 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
4052 526 : if (!HeapTupleIsValid(tup))
4053 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
4054 526 : typTup = (Form_pg_type) GETSTRUCT(tup);
4055 :
4056 526 : memset(repl_null, false, sizeof(repl_null));
4057 526 : memset(repl_repl, false, sizeof(repl_repl));
4058 :
4059 526 : repl_repl[Anum_pg_type_typowner - 1] = true;
4060 526 : repl_val[Anum_pg_type_typowner - 1] = ObjectIdGetDatum(newOwnerId);
4061 :
4062 526 : aclDatum = heap_getattr(tup,
4063 : Anum_pg_type_typacl,
4064 : RelationGetDescr(rel),
4065 : &isNull);
4066 : /* Null ACLs do not require changes */
4067 526 : if (!isNull)
4068 : {
4069 1 : newAcl = aclnewowner(DatumGetAclP(aclDatum),
4070 : typTup->typowner, newOwnerId);
4071 1 : repl_repl[Anum_pg_type_typacl - 1] = true;
4072 1 : repl_val[Anum_pg_type_typacl - 1] = PointerGetDatum(newAcl);
4073 : }
4074 :
4075 526 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), repl_val, repl_null,
4076 : repl_repl);
4077 :
4078 526 : CatalogTupleUpdate(rel, &tup->t_self, tup);
4079 :
4080 : /* If it has an array type, update that too */
4081 526 : if (OidIsValid(typTup->typarray))
4082 263 : AlterTypeOwnerInternal(typTup->typarray, newOwnerId);
4083 :
4084 : /* If it is a range type, update the associated multirange too */
4085 526 : if (typTup->typtype == TYPTYPE_RANGE)
4086 : {
4087 8 : Oid multirange_typeid = get_range_multirange(typeOid);
4088 :
4089 8 : if (!OidIsValid(multirange_typeid))
4090 0 : ereport(ERROR,
4091 : (errcode(ERRCODE_UNDEFINED_OBJECT),
4092 : errmsg("could not find multirange type for data type %s",
4093 : format_type_be(typeOid))));
4094 8 : AlterTypeOwnerInternal(multirange_typeid, newOwnerId);
4095 : }
4096 :
4097 : /* Clean up */
4098 526 : table_close(rel, RowExclusiveLock);
4099 526 : }
4100 :
4101 : /*
4102 : * Execute ALTER TYPE SET SCHEMA
4103 : */
4104 : ObjectAddress
4105 12 : AlterTypeNamespace(List *names, const char *newschema, ObjectType objecttype,
4106 : Oid *oldschema)
4107 : {
4108 : TypeName *typename;
4109 : Oid typeOid;
4110 : Oid nspOid;
4111 : Oid oldNspOid;
4112 : ObjectAddresses *objsMoved;
4113 : ObjectAddress myself;
4114 :
4115 : /* Make a TypeName so we can use standard type lookup machinery */
4116 12 : typename = makeTypeNameFromNameList(names);
4117 12 : typeOid = typenameTypeId(NULL, typename);
4118 :
4119 : /* Don't allow ALTER DOMAIN on a non-domain type */
4120 12 : if (objecttype == OBJECT_DOMAIN && get_typtype(typeOid) != TYPTYPE_DOMAIN)
4121 0 : ereport(ERROR,
4122 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4123 : errmsg("%s is not a domain",
4124 : format_type_be(typeOid))));
4125 :
4126 : /* get schema OID and check its permissions */
4127 12 : nspOid = LookupCreationNamespace(newschema);
4128 :
4129 12 : objsMoved = new_object_addresses();
4130 12 : oldNspOid = AlterTypeNamespace_oid(typeOid, nspOid, false, objsMoved);
4131 12 : free_object_addresses(objsMoved);
4132 :
4133 12 : if (oldschema)
4134 12 : *oldschema = oldNspOid;
4135 :
4136 12 : ObjectAddressSet(myself, TypeRelationId, typeOid);
4137 :
4138 12 : return myself;
4139 : }
4140 :
4141 : /*
4142 : * ALTER TYPE SET SCHEMA, where the caller has already looked up the OIDs
4143 : * of the type and the target schema and checked the schema's privileges.
4144 : *
4145 : * If ignoreDependent is true, we silently ignore dependent types
4146 : * (array types and table rowtypes) rather than raising errors.
4147 : *
4148 : * This entry point is exported for use by AlterObjectNamespace_oid,
4149 : * which doesn't want errors when it passes OIDs of dependent types.
4150 : *
4151 : * Returns the type's old namespace OID, or InvalidOid if we did nothing.
4152 : */
4153 : Oid
4154 20 : AlterTypeNamespace_oid(Oid typeOid, Oid nspOid, bool ignoreDependent,
4155 : ObjectAddresses *objsMoved)
4156 : {
4157 : Oid elemOid;
4158 :
4159 : /* check permissions on type */
4160 20 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
4161 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
4162 :
4163 : /* don't allow direct alteration of array types */
4164 20 : elemOid = get_element_type(typeOid);
4165 20 : if (OidIsValid(elemOid) && get_array_type(elemOid) == typeOid)
4166 : {
4167 4 : if (ignoreDependent)
4168 4 : return InvalidOid;
4169 0 : ereport(ERROR,
4170 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4171 : errmsg("cannot alter array type %s",
4172 : format_type_be(typeOid)),
4173 : errhint("You can alter type %s, which will alter the array type as well.",
4174 : format_type_be(elemOid))));
4175 : }
4176 :
4177 : /* and do the work */
4178 16 : return AlterTypeNamespaceInternal(typeOid, nspOid,
4179 : false, /* isImplicitArray */
4180 : ignoreDependent, /* ignoreDependent */
4181 : true, /* errorOnTableType */
4182 : objsMoved);
4183 : }
4184 :
4185 : /*
4186 : * Move specified type to new namespace.
4187 : *
4188 : * Caller must have already checked privileges.
4189 : *
4190 : * The function automatically recurses to process the type's array type,
4191 : * if any. isImplicitArray should be true only when doing this internal
4192 : * recursion (outside callers must never try to move an array type directly).
4193 : *
4194 : * If ignoreDependent is true, we silently don't process table types.
4195 : *
4196 : * If errorOnTableType is true, the function errors out if the type is
4197 : * a table type. ALTER TABLE has to be used to move a table to a new
4198 : * namespace. (This flag is ignored if ignoreDependent is true.)
4199 : *
4200 : * We also do nothing if the type is already listed in *objsMoved.
4201 : * After a successful move, we add the type to *objsMoved.
4202 : *
4203 : * Returns the type's old namespace OID, or InvalidOid if we did nothing.
4204 : */
4205 : Oid
4206 141 : AlterTypeNamespaceInternal(Oid typeOid, Oid nspOid,
4207 : bool isImplicitArray,
4208 : bool ignoreDependent,
4209 : bool errorOnTableType,
4210 : ObjectAddresses *objsMoved)
4211 : {
4212 : Relation rel;
4213 : HeapTuple tup;
4214 : Form_pg_type typform;
4215 : Oid oldNspOid;
4216 : Oid arrayOid;
4217 : bool isCompositeType;
4218 : ObjectAddress thisobj;
4219 :
4220 : /*
4221 : * Make sure we haven't moved this object previously.
4222 : */
4223 141 : thisobj.classId = TypeRelationId;
4224 141 : thisobj.objectId = typeOid;
4225 141 : thisobj.objectSubId = 0;
4226 :
4227 141 : if (object_address_present(&thisobj, objsMoved))
4228 0 : return InvalidOid;
4229 :
4230 141 : rel = table_open(TypeRelationId, RowExclusiveLock);
4231 :
4232 141 : tup = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
4233 141 : if (!HeapTupleIsValid(tup))
4234 0 : elog(ERROR, "cache lookup failed for type %u", typeOid);
4235 141 : typform = (Form_pg_type) GETSTRUCT(tup);
4236 :
4237 141 : oldNspOid = typform->typnamespace;
4238 141 : arrayOid = typform->typarray;
4239 :
4240 : /* If the type is already there, we scan skip these next few checks. */
4241 141 : if (oldNspOid != nspOid)
4242 : {
4243 : /* common checks on switching namespaces */
4244 117 : CheckSetNamespace(oldNspOid, nspOid);
4245 :
4246 : /* check for duplicate name (more friendly than unique-index failure) */
4247 117 : if (SearchSysCacheExists2(TYPENAMENSP,
4248 : NameGetDatum(&typform->typname),
4249 : ObjectIdGetDatum(nspOid)))
4250 0 : ereport(ERROR,
4251 : (errcode(ERRCODE_DUPLICATE_OBJECT),
4252 : errmsg("type \"%s\" already exists in schema \"%s\"",
4253 : NameStr(typform->typname),
4254 : get_namespace_name(nspOid))));
4255 : }
4256 :
4257 : /* Detect whether type is a composite type (but not a table rowtype) */
4258 141 : isCompositeType =
4259 206 : (typform->typtype == TYPTYPE_COMPOSITE &&
4260 65 : get_rel_relkind(typform->typrelid) == RELKIND_COMPOSITE_TYPE);
4261 :
4262 : /* Enforce not-table-type if requested */
4263 141 : if (typform->typtype == TYPTYPE_COMPOSITE && !isCompositeType)
4264 : {
4265 56 : if (ignoreDependent)
4266 : {
4267 1 : table_close(rel, RowExclusiveLock);
4268 1 : return InvalidOid;
4269 : }
4270 55 : if (errorOnTableType)
4271 0 : ereport(ERROR,
4272 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4273 : errmsg("%s is a table's row type",
4274 : format_type_be(typeOid)),
4275 : /* translator: %s is an SQL ALTER command */
4276 : errhint("Use %s instead.", "ALTER TABLE")));
4277 : }
4278 :
4279 140 : if (oldNspOid != nspOid)
4280 : {
4281 : /* OK, modify the pg_type row */
4282 :
4283 : /* tup is a copy, so we can scribble directly on it */
4284 116 : typform->typnamespace = nspOid;
4285 :
4286 116 : CatalogTupleUpdate(rel, &tup->t_self, tup);
4287 : }
4288 :
4289 : /*
4290 : * Composite types have pg_class entries.
4291 : *
4292 : * We need to modify the pg_class tuple as well to reflect the change of
4293 : * schema.
4294 : */
4295 140 : if (isCompositeType)
4296 : {
4297 : Relation classRel;
4298 :
4299 9 : classRel = table_open(RelationRelationId, RowExclusiveLock);
4300 :
4301 9 : AlterRelationNamespaceInternal(classRel, typform->typrelid,
4302 : oldNspOid, nspOid,
4303 : false, objsMoved);
4304 :
4305 9 : table_close(classRel, RowExclusiveLock);
4306 :
4307 : /*
4308 : * Check for constraints associated with the composite type (we don't
4309 : * currently support this, but probably will someday).
4310 : */
4311 9 : AlterConstraintNamespaces(typform->typrelid, oldNspOid,
4312 : nspOid, false, objsMoved);
4313 : }
4314 : else
4315 : {
4316 : /* If it's a domain, it might have constraints */
4317 131 : if (typform->typtype == TYPTYPE_DOMAIN)
4318 4 : AlterConstraintNamespaces(typeOid, oldNspOid, nspOid, true,
4319 : objsMoved);
4320 : }
4321 :
4322 : /*
4323 : * Update dependency on schema, if any --- a table rowtype has not got
4324 : * one, and neither does an implicit array.
4325 : */
4326 140 : if (oldNspOid != nspOid &&
4327 111 : (isCompositeType || typform->typtype != TYPTYPE_COMPOSITE) &&
4328 69 : !isImplicitArray)
4329 11 : if (changeDependencyFor(TypeRelationId, typeOid,
4330 : NamespaceRelationId, oldNspOid, nspOid) != 1)
4331 0 : elog(ERROR, "could not change schema dependency for type \"%s\"",
4332 : format_type_be(typeOid));
4333 :
4334 140 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4335 :
4336 140 : heap_freetuple(tup);
4337 :
4338 140 : table_close(rel, RowExclusiveLock);
4339 :
4340 140 : add_exact_object_address(&thisobj, objsMoved);
4341 :
4342 : /* Recursively alter the associated array type, if any */
4343 140 : if (OidIsValid(arrayOid))
4344 70 : AlterTypeNamespaceInternal(arrayOid, nspOid,
4345 : true, /* isImplicitArray */
4346 : false, /* ignoreDependent */
4347 : true, /* errorOnTableType */
4348 : objsMoved);
4349 :
4350 140 : return oldNspOid;
4351 : }
4352 :
4353 : /*
4354 : * AlterType
4355 : * ALTER TYPE <type> SET (option = ...)
4356 : *
4357 : * NOTE: the set of changes that can be allowed here is constrained by many
4358 : * non-obvious implementation restrictions. Tread carefully when considering
4359 : * adding new flexibility.
4360 : */
4361 : ObjectAddress
4362 36 : AlterType(AlterTypeStmt *stmt)
4363 : {
4364 : ObjectAddress address;
4365 : Relation catalog;
4366 : TypeName *typename;
4367 : HeapTuple tup;
4368 : Oid typeOid;
4369 : Form_pg_type typForm;
4370 36 : bool requireSuper = false;
4371 : AlterTypeRecurseParams atparams;
4372 : ListCell *pl;
4373 :
4374 36 : catalog = table_open(TypeRelationId, RowExclusiveLock);
4375 :
4376 : /* Make a TypeName so we can use standard type lookup machinery */
4377 36 : typename = makeTypeNameFromNameList(stmt->typeName);
4378 36 : tup = typenameType(NULL, typename, NULL);
4379 :
4380 32 : typeOid = typeTypeId(tup);
4381 32 : typForm = (Form_pg_type) GETSTRUCT(tup);
4382 :
4383 : /* Process options */
4384 32 : memset(&atparams, 0, sizeof(atparams));
4385 91 : foreach(pl, stmt->options)
4386 : {
4387 63 : DefElem *defel = (DefElem *) lfirst(pl);
4388 :
4389 63 : if (strcmp(defel->defname, "storage") == 0)
4390 : {
4391 8 : char *a = defGetString(defel);
4392 :
4393 8 : if (pg_strcasecmp(a, "plain") == 0)
4394 4 : atparams.storage = TYPSTORAGE_PLAIN;
4395 4 : else if (pg_strcasecmp(a, "external") == 0)
4396 0 : atparams.storage = TYPSTORAGE_EXTERNAL;
4397 4 : else if (pg_strcasecmp(a, "extended") == 0)
4398 4 : atparams.storage = TYPSTORAGE_EXTENDED;
4399 0 : else if (pg_strcasecmp(a, "main") == 0)
4400 0 : atparams.storage = TYPSTORAGE_MAIN;
4401 : else
4402 0 : ereport(ERROR,
4403 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
4404 : errmsg("storage \"%s\" not recognized", a)));
4405 :
4406 : /*
4407 : * Validate the storage request. If the type isn't varlena, it
4408 : * certainly doesn't support non-PLAIN storage.
4409 : */
4410 8 : if (atparams.storage != TYPSTORAGE_PLAIN && typForm->typlen != -1)
4411 0 : ereport(ERROR,
4412 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
4413 : errmsg("fixed-size types must have storage PLAIN")));
4414 :
4415 : /*
4416 : * Switching from PLAIN to non-PLAIN is allowed, but it requires
4417 : * superuser, since we can't validate that the type's C functions
4418 : * will support it. Switching from non-PLAIN to PLAIN is
4419 : * disallowed outright, because it's not practical to ensure that
4420 : * no tables have toasted values of the type. Switching among
4421 : * different non-PLAIN settings is OK, since it just constitutes a
4422 : * change in the strategy requested for columns created in the
4423 : * future.
4424 : */
4425 8 : if (atparams.storage != TYPSTORAGE_PLAIN &&
4426 4 : typForm->typstorage == TYPSTORAGE_PLAIN)
4427 0 : requireSuper = true;
4428 8 : else if (atparams.storage == TYPSTORAGE_PLAIN &&
4429 4 : typForm->typstorage != TYPSTORAGE_PLAIN)
4430 4 : ereport(ERROR,
4431 : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
4432 : errmsg("cannot change type's storage to PLAIN")));
4433 :
4434 4 : atparams.updateStorage = true;
4435 : }
4436 55 : else if (strcmp(defel->defname, "receive") == 0)
4437 : {
4438 15 : if (defel->arg != NULL)
4439 15 : atparams.receiveOid =
4440 15 : findTypeReceiveFunction(defGetQualifiedName(defel),
4441 : typeOid);
4442 : else
4443 0 : atparams.receiveOid = InvalidOid; /* NONE, remove function */
4444 15 : atparams.updateReceive = true;
4445 : /* Replacing an I/O function requires superuser. */
4446 15 : requireSuper = true;
4447 : }
4448 40 : else if (strcmp(defel->defname, "send") == 0)
4449 : {
4450 15 : if (defel->arg != NULL)
4451 15 : atparams.sendOid =
4452 15 : findTypeSendFunction(defGetQualifiedName(defel),
4453 : typeOid);
4454 : else
4455 0 : atparams.sendOid = InvalidOid; /* NONE, remove function */
4456 15 : atparams.updateSend = true;
4457 : /* Replacing an I/O function requires superuser. */
4458 15 : requireSuper = true;
4459 : }
4460 25 : else if (strcmp(defel->defname, "typmod_in") == 0)
4461 : {
4462 4 : if (defel->arg != NULL)
4463 4 : atparams.typmodinOid =
4464 4 : findTypeTypmodinFunction(defGetQualifiedName(defel));
4465 : else
4466 0 : atparams.typmodinOid = InvalidOid; /* NONE, remove function */
4467 4 : atparams.updateTypmodin = true;
4468 : /* Replacing an I/O function requires superuser. */
4469 4 : requireSuper = true;
4470 : }
4471 21 : else if (strcmp(defel->defname, "typmod_out") == 0)
4472 : {
4473 4 : if (defel->arg != NULL)
4474 4 : atparams.typmodoutOid =
4475 4 : findTypeTypmodoutFunction(defGetQualifiedName(defel));
4476 : else
4477 0 : atparams.typmodoutOid = InvalidOid; /* NONE, remove function */
4478 4 : atparams.updateTypmodout = true;
4479 : /* Replacing an I/O function requires superuser. */
4480 4 : requireSuper = true;
4481 : }
4482 17 : else if (strcmp(defel->defname, "analyze") == 0)
4483 : {
4484 6 : if (defel->arg != NULL)
4485 6 : atparams.analyzeOid =
4486 6 : findTypeAnalyzeFunction(defGetQualifiedName(defel),
4487 : typeOid);
4488 : else
4489 0 : atparams.analyzeOid = InvalidOid; /* NONE, remove function */
4490 6 : atparams.updateAnalyze = true;
4491 : /* Replacing an analyze function requires superuser. */
4492 6 : requireSuper = true;
4493 : }
4494 11 : else if (strcmp(defel->defname, "subscript") == 0)
4495 : {
4496 11 : if (defel->arg != NULL)
4497 11 : atparams.subscriptOid =
4498 11 : findTypeSubscriptingFunction(defGetQualifiedName(defel),
4499 : typeOid);
4500 : else
4501 0 : atparams.subscriptOid = InvalidOid; /* NONE, remove function */
4502 11 : atparams.updateSubscript = true;
4503 : /* Replacing a subscript function requires superuser. */
4504 11 : requireSuper = true;
4505 : }
4506 :
4507 : /*
4508 : * The rest of the options that CREATE accepts cannot be changed.
4509 : * Check for them so that we can give a meaningful error message.
4510 : */
4511 0 : else if (strcmp(defel->defname, "input") == 0 ||
4512 0 : strcmp(defel->defname, "output") == 0 ||
4513 0 : strcmp(defel->defname, "internallength") == 0 ||
4514 0 : strcmp(defel->defname, "passedbyvalue") == 0 ||
4515 0 : strcmp(defel->defname, "alignment") == 0 ||
4516 0 : strcmp(defel->defname, "like") == 0 ||
4517 0 : strcmp(defel->defname, "category") == 0 ||
4518 0 : strcmp(defel->defname, "preferred") == 0 ||
4519 0 : strcmp(defel->defname, "default") == 0 ||
4520 0 : strcmp(defel->defname, "element") == 0 ||
4521 0 : strcmp(defel->defname, "delimiter") == 0 ||
4522 0 : strcmp(defel->defname, "collatable") == 0)
4523 0 : ereport(ERROR,
4524 : (errcode(ERRCODE_SYNTAX_ERROR),
4525 : errmsg("type attribute \"%s\" cannot be changed",
4526 : defel->defname)));
4527 : else
4528 0 : ereport(ERROR,
4529 : (errcode(ERRCODE_SYNTAX_ERROR),
4530 : errmsg("type attribute \"%s\" not recognized",
4531 : defel->defname)));
4532 : }
4533 :
4534 : /*
4535 : * Permissions check. Require superuser if we decided the command
4536 : * requires that, else must own the type.
4537 : */
4538 28 : if (requireSuper)
4539 : {
4540 24 : if (!superuser())
4541 0 : ereport(ERROR,
4542 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
4543 : errmsg("must be superuser to alter a type")));
4544 : }
4545 : else
4546 : {
4547 4 : if (!object_ownercheck(TypeRelationId, typeOid, GetUserId()))
4548 0 : aclcheck_error_type(ACLCHECK_NOT_OWNER, typeOid);
4549 : }
4550 :
4551 : /*
4552 : * We disallow all forms of ALTER TYPE SET on types that aren't plain base
4553 : * types. It would for example be highly unsafe, not to mention
4554 : * pointless, to change the send/receive functions for a composite type.
4555 : * Moreover, pg_dump has no support for changing these properties on
4556 : * non-base types. We might weaken this someday, but not now.
4557 : *
4558 : * Note: if you weaken this enough to allow composite types, be sure to
4559 : * adjust the GenerateTypeDependencies call in AlterTypeRecurse.
4560 : */
4561 28 : if (typForm->typtype != TYPTYPE_BASE)
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 : /*
4568 : * For the same reasons, don't allow direct alteration of array types.
4569 : */
4570 28 : if (IsTrueArrayType(typForm))
4571 0 : ereport(ERROR,
4572 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
4573 : errmsg("%s is not a base type",
4574 : format_type_be(typeOid))));
4575 :
4576 : /* OK, recursively update this type and any arrays/domains over it */
4577 28 : AlterTypeRecurse(typeOid, false, tup, catalog, &atparams);
4578 :
4579 : /* Clean up */
4580 28 : ReleaseSysCache(tup);
4581 :
4582 28 : table_close(catalog, RowExclusiveLock);
4583 :
4584 28 : ObjectAddressSet(address, TypeRelationId, typeOid);
4585 :
4586 28 : return address;
4587 : }
4588 :
4589 : /*
4590 : * AlterTypeRecurse: one recursion step for AlterType()
4591 : *
4592 : * Apply the changes specified by "atparams" to the type identified by
4593 : * "typeOid", whose existing pg_type tuple is "tup". If necessary,
4594 : * recursively update its array type as well. Then search for any domains
4595 : * over this type, and recursively apply (most of) the same changes to those
4596 : * domains.
4597 : *
4598 : * We need this because the system generally assumes that a domain inherits
4599 : * many properties from its base type. See DefineDomain() above for details
4600 : * of what is inherited. Arrays inherit a smaller number of properties,
4601 : * but not none.
4602 : *
4603 : * There's a race condition here, in that some other transaction could
4604 : * concurrently add another domain atop this base type; we'd miss updating
4605 : * that one. Hence, be wary of allowing ALTER TYPE to change properties for
4606 : * which it'd be really fatal for a domain to be out of sync with its base
4607 : * type (typlen, for example). In practice, races seem unlikely to be an
4608 : * issue for plausible use-cases for ALTER TYPE. If one does happen, it could
4609 : * be fixed by re-doing the same ALTER TYPE once all prior transactions have
4610 : * committed.
4611 : */
4612 : static void
4613 40 : AlterTypeRecurse(Oid typeOid, bool isImplicitArray,
4614 : HeapTuple tup, Relation catalog,
4615 : AlterTypeRecurseParams *atparams)
4616 : {
4617 : Datum values[Natts_pg_type];
4618 : bool nulls[Natts_pg_type];
4619 : bool replaces[Natts_pg_type];
4620 : HeapTuple newtup;
4621 : SysScanDesc scan;
4622 : ScanKeyData key[1];
4623 : HeapTuple domainTup;
4624 :
4625 : /* Since this function recurses, it could be driven to stack overflow */
4626 40 : check_stack_depth();
4627 :
4628 : /* Update the current type's tuple */
4629 40 : memset(values, 0, sizeof(values));
4630 40 : memset(nulls, 0, sizeof(nulls));
4631 40 : memset(replaces, 0, sizeof(replaces));
4632 :
4633 40 : if (atparams->updateStorage)
4634 : {
4635 8 : replaces[Anum_pg_type_typstorage - 1] = true;
4636 8 : values[Anum_pg_type_typstorage - 1] = CharGetDatum(atparams->storage);
4637 : }
4638 40 : if (atparams->updateReceive)
4639 : {
4640 15 : replaces[Anum_pg_type_typreceive - 1] = true;
4641 15 : values[Anum_pg_type_typreceive - 1] = ObjectIdGetDatum(atparams->receiveOid);
4642 : }
4643 40 : if (atparams->updateSend)
4644 : {
4645 19 : replaces[Anum_pg_type_typsend - 1] = true;
4646 19 : values[Anum_pg_type_typsend - 1] = ObjectIdGetDatum(atparams->sendOid);
4647 : }
4648 40 : if (atparams->updateTypmodin)
4649 : {
4650 8 : replaces[Anum_pg_type_typmodin - 1] = true;
4651 8 : values[Anum_pg_type_typmodin - 1] = ObjectIdGetDatum(atparams->typmodinOid);
4652 : }
4653 40 : if (atparams->updateTypmodout)
4654 : {
4655 8 : replaces[Anum_pg_type_typmodout - 1] = true;
4656 8 : values[Anum_pg_type_typmodout - 1] = ObjectIdGetDatum(atparams->typmodoutOid);
4657 : }
4658 40 : if (atparams->updateAnalyze)
4659 : {
4660 10 : replaces[Anum_pg_type_typanalyze - 1] = true;
4661 10 : values[Anum_pg_type_typanalyze - 1] = ObjectIdGetDatum(atparams->analyzeOid);
4662 : }
4663 40 : if (atparams->updateSubscript)
4664 : {
4665 11 : replaces[Anum_pg_type_typsubscript - 1] = true;
4666 11 : values[Anum_pg_type_typsubscript - 1] = ObjectIdGetDatum(atparams->subscriptOid);
4667 : }
4668 :
4669 40 : newtup = heap_modify_tuple(tup, RelationGetDescr(catalog),
4670 : values, nulls, replaces);
4671 :
4672 40 : CatalogTupleUpdate(catalog, &newtup->t_self, newtup);
4673 :
4674 : /* Rebuild dependencies for this type */
4675 40 : GenerateTypeDependencies(newtup,
4676 : catalog,
4677 : NULL, /* don't have defaultExpr handy */
4678 : NULL, /* don't have typacl handy */
4679 : 0, /* we rejected composite types above */
4680 : isImplicitArray, /* it might be an array */
4681 : isImplicitArray, /* dependent iff it's array */
4682 : false, /* don't touch extension membership */
4683 : true);
4684 :
4685 40 : InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);
4686 :
4687 : /*
4688 : * Arrays inherit their base type's typmodin and typmodout, but none of
4689 : * the other properties we're concerned with here. Recurse to the array
4690 : * type if needed.
4691 : */
4692 40 : if (!isImplicitArray &&
4693 36 : (atparams->updateTypmodin || atparams->updateTypmodout))
4694 : {
4695 4 : Oid arrtypoid = ((Form_pg_type) GETSTRUCT(newtup))->typarray;
4696 :
4697 4 : if (OidIsValid(arrtypoid))
4698 : {
4699 : HeapTuple arrtup;
4700 : AlterTypeRecurseParams arrparams;
4701 :
4702 4 : arrtup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(arrtypoid));
4703 4 : if (!HeapTupleIsValid(arrtup))
4704 0 : elog(ERROR, "cache lookup failed for type %u", arrtypoid);
4705 :
4706 4 : memset(&arrparams, 0, sizeof(arrparams));
4707 4 : arrparams.updateTypmodin = atparams->updateTypmodin;
4708 4 : arrparams.updateTypmodout = atparams->updateTypmodout;
4709 4 : arrparams.typmodinOid = atparams->typmodinOid;
4710 4 : arrparams.typmodoutOid = atparams->typmodoutOid;
4711 :
4712 4 : AlterTypeRecurse(arrtypoid, true, arrtup, catalog, &arrparams);
4713 :
4714 4 : ReleaseSysCache(arrtup);
4715 : }
4716 : }
4717 :
4718 : /*
4719 : * Now we need to recurse to domains. However, some properties are not
4720 : * inherited by domains, so clear the update flags for those.
4721 : */
4722 40 : atparams->updateReceive = false; /* domains use F_DOMAIN_RECV */
4723 40 : atparams->updateTypmodin = false; /* domains don't have typmods */
4724 40 : atparams->updateTypmodout = false;
4725 40 : atparams->updateSubscript = false; /* domains don't have subscriptors */
4726 :
4727 : /* Skip the scan if nothing remains to be done */
4728 40 : if (!(atparams->updateStorage ||
4729 32 : atparams->updateSend ||
4730 13 : atparams->updateAnalyze))
4731 11 : return;
4732 :
4733 : /* Search pg_type for possible domains over this type */
4734 29 : ScanKeyInit(&key[0],
4735 : Anum_pg_type_typbasetype,
4736 : BTEqualStrategyNumber, F_OIDEQ,
4737 : ObjectIdGetDatum(typeOid));
4738 :
4739 29 : scan = systable_beginscan(catalog, InvalidOid, false,
4740 : NULL, 1, key);
4741 :
4742 37 : while ((domainTup = systable_getnext(scan)) != NULL)
4743 : {
4744 8 : Form_pg_type domainForm = (Form_pg_type) GETSTRUCT(domainTup);
4745 :
4746 : /*
4747 : * Shouldn't have a nonzero typbasetype in a non-domain, but let's
4748 : * check
4749 : */
4750 8 : if (domainForm->typtype != TYPTYPE_DOMAIN)
4751 0 : continue;
4752 :
4753 8 : AlterTypeRecurse(domainForm->oid, false, domainTup, catalog, atparams);
4754 : }
4755 :
4756 29 : systable_endscan(scan);
4757 : }
|
