Header And Logo
|
#include "nodes/primnodes.h"#include "storage/lock.h"
Go to the source code of this file.
| #define RangeVarGetRelid | ( | relation, | ||
| lockmode, | ||||
| missing_ok | ||||
| ) | RangeVarGetRelidExtended(relation, lockmode, missing_ok, false, NULL, NULL) |
Definition at line 53 of file namespace.h.
Referenced by AlterSequence(), CheckIndexCompatible(), CheckRelationOwnership(), convert_table_name(), CreateTrigger(), DefineRule(), get_rel_oids(), LookupTypeName(), nextval(), objectNamesToOids(), pg_get_serial_sequence(), pg_get_viewdef_name(), pg_get_viewdef_name_ext(), plpgsql_parse_cwordrowtype(), plpgsql_parse_cwordtype(), regclassin(), relation_openrv(), relation_openrv_extended(), searchRangeTableForRel(), and text_regclass().
| typedef struct _FuncCandidateList * FuncCandidateList |
| typedef struct OverrideSearchPath OverrideSearchPath |
| typedef void(* RangeVarGetRelidCallback)(const RangeVar *relation, Oid relId, Oid oldRelId, void *callback_arg) |
Definition at line 50 of file namespace.h.
| void AtEOSubXact_Namespace | ( | bool | isCommit, | |
| SubTransactionId | mySubid, | |||
| SubTransactionId | parentSubid | |||
| ) |
Definition at line 3725 of file namespace.c.
References activeCreationNamespace, activeTempCreationPending, baseCreationNamespace, baseSearchPathValid, baseTempCreationPending, OverrideStackEntry::creationNamespace, elog, GetCurrentTransactionNestLevel(), linitial, list_delete_first(), list_free(), myTempNamespace, myTempNamespaceSubID, myTempToastNamespace, OverrideStackEntry::nestLevel, pfree(), OverrideStackEntry::searchPath, and WARNING.
Referenced by AbortSubTransaction(), and CommitSubTransaction().
{
OverrideStackEntry *entry;
if (myTempNamespaceSubID == mySubid)
{
if (isCommit)
myTempNamespaceSubID = parentSubid;
else
{
myTempNamespaceSubID = InvalidSubTransactionId;
/* TEMP namespace creation failed, so reset state */
myTempNamespace = InvalidOid;
myTempToastNamespace = InvalidOid;
baseSearchPathValid = false; /* need to rebuild list */
}
}
/*
* Clean up if someone failed to do PopOverrideSearchPath
*/
while (overrideStack)
{
entry = (OverrideStackEntry *) linitial(overrideStack);
if (entry->nestLevel < GetCurrentTransactionNestLevel())
break;
if (isCommit)
elog(WARNING, "leaked override search path");
overrideStack = list_delete_first(overrideStack);
list_free(entry->searchPath);
pfree(entry);
}
/* Activate the next level down. */
if (overrideStack)
{
entry = (OverrideStackEntry *) linitial(overrideStack);
activeSearchPath = entry->searchPath;
activeCreationNamespace = entry->creationNamespace;
activeTempCreationPending = false; /* XXX is this OK? */
}
else
{
/* If not baseSearchPathValid, this is useless but harmless */
activeSearchPath = baseSearchPath;
activeCreationNamespace = baseCreationNamespace;
activeTempCreationPending = baseTempCreationPending;
}
}
| void AtEOXact_Namespace | ( | bool | isCommit | ) |
Definition at line 3670 of file namespace.c.
References activeCreationNamespace, activeTempCreationPending, baseCreationNamespace, baseSearchPathValid, baseTempCreationPending, elog, InvalidSubTransactionId, linitial, list_delete_first(), list_free(), myTempNamespace, myTempNamespaceSubID, myTempToastNamespace, on_shmem_exit(), pfree(), RemoveTempRelationsCallback(), OverrideStackEntry::searchPath, and WARNING.
Referenced by AbortTransaction(), CommitTransaction(), and PrepareTransaction().
{
/*
* If we abort the transaction in which a temp namespace was selected,
* we'll have to do any creation or cleanout work over again. So, just
* forget the namespace entirely until next time. On the other hand, if
* we commit then register an exit callback to clean out the temp tables
* at backend shutdown. (We only want to register the callback once per
* session, so this is a good place to do it.)
*/
if (myTempNamespaceSubID != InvalidSubTransactionId)
{
if (isCommit)
on_shmem_exit(RemoveTempRelationsCallback, 0);
else
{
myTempNamespace = InvalidOid;
myTempToastNamespace = InvalidOid;
baseSearchPathValid = false; /* need to rebuild list */
}
myTempNamespaceSubID = InvalidSubTransactionId;
}
/*
* Clean up if someone failed to do PopOverrideSearchPath
*/
if (overrideStack)
{
if (isCommit)
elog(WARNING, "leaked override search path");
while (overrideStack)
{
OverrideStackEntry *entry;
entry = (OverrideStackEntry *) linitial(overrideStack);
overrideStack = list_delete_first(overrideStack);
list_free(entry->searchPath);
pfree(entry);
}
/* If not baseSearchPathValid, this is useless but harmless */
activeSearchPath = baseSearchPath;
activeCreationNamespace = baseCreationNamespace;
activeTempCreationPending = baseTempCreationPending;
}
}
Definition at line 2758 of file namespace.c.
References ereport, errcode(), errmsg(), ERROR, get_namespace_name(), getObjectDescriptionOids(), isAnyTempNamespace(), PG_TOAST_NAMESPACE, ProcedureRelationId, and RelationRelationId.
Referenced by AlterObjectNamespace_internal(), AlterTableNamespace(), and AlterTypeNamespaceInternal().
{
if (oldNspOid == nspOid)
ereport(ERROR,
(classid == RelationRelationId ?
errcode(ERRCODE_DUPLICATE_TABLE) :
classid == ProcedureRelationId ?
errcode(ERRCODE_DUPLICATE_FUNCTION) :
errcode(ERRCODE_DUPLICATE_OBJECT),
errmsg("%s is already in schema \"%s\"",
getObjectDescriptionOids(classid, objid),
get_namespace_name(nspOid))));
/* disallow renaming into or out of temp schemas */
if (isAnyTempNamespace(nspOid) || isAnyTempNamespace(oldNspOid))
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot move objects into or out of temporary schemas")));
/* same for TOAST schema */
if (nspOid == PG_TOAST_NAMESPACE || oldNspOid == PG_TOAST_NAMESPACE)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot move objects into or out of TOAST schema")));
}
| Oid CollationGetCollid | ( | const char * | collname | ) |
Definition at line 1918 of file namespace.c.
References COLLNAMEENCNSP, GetDatabaseEncoding(), GetSysCacheOid3, Int32GetDatum, lfirst_oid, myTempNamespace, ObjectIdGetDatum, OidIsValid, PointerGetDatum, and recomputeNamespacePath().
Referenced by CollationIsVisible().
{
int32 dbencoding = GetDatabaseEncoding();
ListCell *l;
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
Oid collid;
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
/* Check for database-encoding-specific entry */
collid = GetSysCacheOid3(COLLNAMEENCNSP,
PointerGetDatum(collname),
Int32GetDatum(dbencoding),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(collid))
return collid;
/* Check for any-encoding entry */
collid = GetSysCacheOid3(COLLNAMEENCNSP,
PointerGetDatum(collname),
Int32GetDatum(-1),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(collid))
return collid;
}
/* Not found in path */
return InvalidOid;
}
Definition at line 1961 of file namespace.c.
References CollationGetCollid(), COLLOID, elog, ERROR, GETSTRUCT, HeapTupleIsValid, list_member_oid(), NameStr, ObjectIdGetDatum, PG_CATALOG_NAMESPACE, recomputeNamespacePath(), ReleaseSysCache(), and SearchSysCache1.
Referenced by generate_collation_name(), and pg_collation_is_visible().
{
HeapTuple colltup;
Form_pg_collation collform;
Oid collnamespace;
bool visible;
colltup = SearchSysCache1(COLLOID, ObjectIdGetDatum(collid));
if (!HeapTupleIsValid(colltup))
elog(ERROR, "cache lookup failed for collation %u", collid);
collform = (Form_pg_collation) GETSTRUCT(colltup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
collnamespace = collform->collnamespace;
if (collnamespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, collnamespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another conversion of the same name earlier in the path.
* So we must do a slow check to see if this conversion would be found
* by CollationGetCollid.
*/
char *collname = NameStr(collform->collname);
visible = (CollationGetCollid(collname) == collid);
}
ReleaseSysCache(colltup);
return visible;
}
| Oid ConversionGetConid | ( | const char * | conname | ) |
Definition at line 2011 of file namespace.c.
References CONNAMENSP, GetSysCacheOid2, lfirst_oid, myTempNamespace, ObjectIdGetDatum, OidIsValid, PointerGetDatum, and recomputeNamespacePath().
Referenced by ConversionIsVisible().
{
Oid conid;
ListCell *l;
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
conid = GetSysCacheOid2(CONNAMENSP,
PointerGetDatum(conname),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(conid))
return conid;
}
/* Not found in path */
return InvalidOid;
}
Definition at line 2043 of file namespace.c.
References ConversionGetConid(), CONVOID, elog, ERROR, GETSTRUCT, HeapTupleIsValid, list_member_oid(), NameStr, ObjectIdGetDatum, PG_CATALOG_NAMESPACE, recomputeNamespacePath(), ReleaseSysCache(), and SearchSysCache1.
Referenced by pg_conversion_is_visible().
{
HeapTuple contup;
Form_pg_conversion conform;
Oid connamespace;
bool visible;
contup = SearchSysCache1(CONVOID, ObjectIdGetDatum(conid));
if (!HeapTupleIsValid(contup))
elog(ERROR, "cache lookup failed for conversion %u", conid);
conform = (Form_pg_conversion) GETSTRUCT(contup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
connamespace = conform->connamespace;
if (connamespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, connamespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another conversion of the same name earlier in the path.
* So we must do a slow check to see if this conversion would be found
* by ConversionGetConid.
*/
char *conname = NameStr(conform->conname);
visible = (ConversionGetConid(conname) == conid);
}
ReleaseSysCache(contup);
return visible;
}
| OverrideSearchPath* CopyOverrideSearchPath | ( | OverrideSearchPath * | path | ) |
Definition at line 3113 of file namespace.c.
References OverrideSearchPath::addCatalog, OverrideSearchPath::addTemp, list_copy(), palloc(), and OverrideSearchPath::schemas.
Referenced by CopyCachedPlan().
{
OverrideSearchPath *result;
result = (OverrideSearchPath *) palloc(sizeof(OverrideSearchPath));
result->schemas = list_copy(path->schemas);
result->addCatalog = path->addCatalog;
result->addTemp = path->addTemp;
return result;
}
| void DeconstructQualifiedName | ( | List * | names, | |
| char ** | nspname_p, | |||
| char ** | objname_p | |||
| ) |
Definition at line 2599 of file namespace.c.
References ereport, errcode(), errmsg(), ERROR, get_database_name(), linitial, list_length(), lsecond, lthird, MyDatabaseId, NameListToString(), and strVal.
Referenced by FuncnameGetCandidates(), get_collation_oid(), get_conversion_oid(), get_ts_config_oid(), get_ts_dict_oid(), get_ts_parser_oid(), get_ts_template_oid(), GetIndexOpClass(), LookupTypeName(), make_oper_cache_key(), OpClassCacheLookup(), OpernameGetCandidates(), OpernameGetOprid(), OpFamilyCacheLookup(), and QualifiedNameGetCreationNamespace().
{
char *catalogname;
char *schemaname = NULL;
char *objname = NULL;
switch (list_length(names))
{
case 1:
objname = strVal(linitial(names));
break;
case 2:
schemaname = strVal(linitial(names));
objname = strVal(lsecond(names));
break;
case 3:
catalogname = strVal(linitial(names));
schemaname = strVal(lsecond(names));
objname = strVal(lthird(names));
/*
* We check the catalog name and then ignore it.
*/
if (strcmp(catalogname, get_database_name(MyDatabaseId)) != 0)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cross-database references are not implemented: %s",
NameListToString(names))));
break;
default:
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("improper qualified name (too many dotted names): %s",
NameListToString(names))));
break;
}
*nspname_p = schemaname;
*objname_p = objname;
}
Definition at line 3945 of file namespace.c.
References activeCreationNamespace, activeTempCreationPending, InitTempTableNamespace(), linitial_oid, list_copy(), list_delete_first(), and recomputeNamespacePath().
Referenced by AfterTriggerSetState(), CreateExtension(), current_schema(), and current_schemas().
{
List *result;
recomputeNamespacePath();
/*
* If the temp namespace should be first, force it to exist. This is so
* that callers can trust the result to reflect the actual default
* creation namespace. It's a bit bogus to do this here, since
* current_schema() is supposedly a stable function without side-effects,
* but the alternatives seem worse.
*/
if (activeTempCreationPending)
{
InitTempTableNamespace();
recomputeNamespacePath();
}
result = list_copy(activeSearchPath);
if (!includeImplicit)
{
while (result && linitial_oid(result) != activeCreationNamespace)
result = list_delete_first(result);
}
return result;
}
| int fetch_search_path_array | ( | Oid * | sarray, | |
| int | sarray_len | |||
| ) |
Definition at line 3985 of file namespace.c.
References lfirst_oid, myTempNamespace, and recomputeNamespacePath().
Referenced by make_oper_cache_key().
{
int count = 0;
ListCell *l;
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not include temp namespace */
if (count < sarray_len)
sarray[count] = namespaceId;
count++;
}
return count;
}
Definition at line 3390 of file namespace.c.
References FindDefaultConversion(), lfirst_oid, myTempNamespace, OidIsValid, and recomputeNamespacePath().
Referenced by pg_do_encoding_conversion(), and PrepareClientEncoding().
{
Oid proc;
ListCell *l;
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
proc = FindDefaultConversion(namespaceId, for_encoding, to_encoding);
if (OidIsValid(proc))
return proc;
}
/* Not found in path */
return InvalidOid;
}
| FuncCandidateList FuncnameGetCandidates | ( | List * | names, | |
| int | nargs, | |||
| List * | argnames, | |||
| bool | expand_variadic, | |||
| bool | expand_defaults | |||
| ) |
Definition at line 910 of file namespace.c.
References _FuncCandidateList::argnumbers, _FuncCandidateList::args, Assert, CStringGetDatum, DeconstructQualifiedName(), GETSTRUCT, HeapTupleGetOid, i, lfirst_oid, LookupExplicitNamespace(), MatchNamedCall(), Max, catclist::members, memcmp(), myTempNamespace, catclist::n_members, _FuncCandidateList::nargs, _FuncCandidateList::ndargs, _FuncCandidateList::next, NIL, NULL, _FuncCandidateList::nvargs, _FuncCandidateList::oid, OidIsValid, catclist::ordered, palloc(), _FuncCandidateList::pathpos, pfree(), PROCNAMEARGSNSP, recomputeNamespacePath(), ReleaseSysCacheList, SearchSysCacheList1, and catctup::tuple.
Referenced by func_get_detail(), FunctionIsVisible(), LookupFuncName(), regprocedurein(), regprocin(), and regprocout().
{
FuncCandidateList resultList = NULL;
bool any_special = false;
char *schemaname;
char *funcname;
Oid namespaceId;
CatCList *catlist;
int i;
/* check for caller error */
Assert(nargs >= 0 || !(expand_variadic | expand_defaults));
/* deconstruct the name list */
DeconstructQualifiedName(names, &schemaname, &funcname);
if (schemaname)
{
/* use exact schema given */
namespaceId = LookupExplicitNamespace(schemaname, false);
}
else
{
/* flag to indicate we need namespace search */
namespaceId = InvalidOid;
recomputeNamespacePath();
}
/* Search syscache by name only */
catlist = SearchSysCacheList1(PROCNAMEARGSNSP, CStringGetDatum(funcname));
for (i = 0; i < catlist->n_members; i++)
{
HeapTuple proctup = &catlist->members[i]->tuple;
Form_pg_proc procform = (Form_pg_proc) GETSTRUCT(proctup);
int pronargs = procform->pronargs;
int effective_nargs;
int pathpos = 0;
bool variadic;
bool use_defaults;
Oid va_elem_type;
int *argnumbers = NULL;
FuncCandidateList newResult;
if (OidIsValid(namespaceId))
{
/* Consider only procs in specified namespace */
if (procform->pronamespace != namespaceId)
continue;
}
else
{
/*
* Consider only procs that are in the search path and are not in
* the temp namespace.
*/
ListCell *nsp;
foreach(nsp, activeSearchPath)
{
if (procform->pronamespace == lfirst_oid(nsp) &&
procform->pronamespace != myTempNamespace)
break;
pathpos++;
}
if (nsp == NULL)
continue; /* proc is not in search path */
}
if (argnames != NIL)
{
/*
* Call uses named or mixed notation
*
* Named or mixed notation can match a variadic function only if
* expand_variadic is off; otherwise there is no way to match the
* presumed-nameless parameters expanded from the variadic array.
*/
if (OidIsValid(procform->provariadic) && expand_variadic)
continue;
va_elem_type = InvalidOid;
variadic = false;
/*
* Check argument count.
*/
Assert(nargs >= 0); /* -1 not supported with argnames */
if (pronargs > nargs && expand_defaults)
{
/* Ignore if not enough default expressions */
if (nargs + procform->pronargdefaults < pronargs)
continue;
use_defaults = true;
}
else
use_defaults = false;
/* Ignore if it doesn't match requested argument count */
if (pronargs != nargs && !use_defaults)
continue;
/* Check for argument name match, generate positional mapping */
if (!MatchNamedCall(proctup, nargs, argnames,
&argnumbers))
continue;
/* Named argument matching is always "special" */
any_special = true;
}
else
{
/*
* Call uses positional notation
*
* Check if function is variadic, and get variadic element type if
* so. If expand_variadic is false, we should just ignore
* variadic-ness.
*/
if (pronargs <= nargs && expand_variadic)
{
va_elem_type = procform->provariadic;
variadic = OidIsValid(va_elem_type);
any_special |= variadic;
}
else
{
va_elem_type = InvalidOid;
variadic = false;
}
/*
* Check if function can match by using parameter defaults.
*/
if (pronargs > nargs && expand_defaults)
{
/* Ignore if not enough default expressions */
if (nargs + procform->pronargdefaults < pronargs)
continue;
use_defaults = true;
any_special = true;
}
else
use_defaults = false;
/* Ignore if it doesn't match requested argument count */
if (nargs >= 0 && pronargs != nargs && !variadic && !use_defaults)
continue;
}
/*
* We must compute the effective argument list so that we can easily
* compare it to earlier results. We waste a palloc cycle if it gets
* masked by an earlier result, but really that's a pretty infrequent
* case so it's not worth worrying about.
*/
effective_nargs = Max(pronargs, nargs);
newResult = (FuncCandidateList)
palloc(sizeof(struct _FuncCandidateList) - sizeof(Oid)
+ effective_nargs * sizeof(Oid));
newResult->pathpos = pathpos;
newResult->oid = HeapTupleGetOid(proctup);
newResult->nargs = effective_nargs;
newResult->argnumbers = argnumbers;
if (argnumbers)
{
/* Re-order the argument types into call's logical order */
Oid *proargtypes = procform->proargtypes.values;
int i;
for (i = 0; i < pronargs; i++)
newResult->args[i] = proargtypes[argnumbers[i]];
}
else
{
/* Simple positional case, just copy proargtypes as-is */
memcpy(newResult->args, procform->proargtypes.values,
pronargs * sizeof(Oid));
}
if (variadic)
{
int i;
newResult->nvargs = effective_nargs - pronargs + 1;
/* Expand variadic argument into N copies of element type */
for (i = pronargs - 1; i < effective_nargs; i++)
newResult->args[i] = va_elem_type;
}
else
newResult->nvargs = 0;
newResult->ndargs = use_defaults ? pronargs - nargs : 0;
/*
* Does it have the same arguments as something we already accepted?
* If so, decide what to do to avoid returning duplicate argument
* lists. We can skip this check for the single-namespace case if no
* special (named, variadic or defaults) match has been made, since
* then the unique index on pg_proc guarantees all the matches have
* different argument lists.
*/
if (resultList != NULL &&
(any_special || !OidIsValid(namespaceId)))
{
/*
* If we have an ordered list from SearchSysCacheList (the normal
* case), then any conflicting proc must immediately adjoin this
* one in the list, so we only need to look at the newest result
* item. If we have an unordered list, we have to scan the whole
* result list. Also, if either the current candidate or any
* previous candidate is a special match, we can't assume that
* conflicts are adjacent.
*
* We ignore defaulted arguments in deciding what is a match.
*/
FuncCandidateList prevResult;
if (catlist->ordered && !any_special)
{
/* ndargs must be 0 if !any_special */
if (effective_nargs == resultList->nargs &&
memcmp(newResult->args,
resultList->args,
effective_nargs * sizeof(Oid)) == 0)
prevResult = resultList;
else
prevResult = NULL;
}
else
{
int cmp_nargs = newResult->nargs - newResult->ndargs;
for (prevResult = resultList;
prevResult;
prevResult = prevResult->next)
{
if (cmp_nargs == prevResult->nargs - prevResult->ndargs &&
memcmp(newResult->args,
prevResult->args,
cmp_nargs * sizeof(Oid)) == 0)
break;
}
}
if (prevResult)
{
/*
* We have a match with a previous result. Decide which one
* to keep, or mark it ambiguous if we can't decide. The
* logic here is preference > 0 means prefer the old result,
* preference < 0 means prefer the new, preference = 0 means
* ambiguous.
*/
int preference;
if (pathpos != prevResult->pathpos)
{
/*
* Prefer the one that's earlier in the search path.
*/
preference = pathpos - prevResult->pathpos;
}
else if (variadic && prevResult->nvargs == 0)
{
/*
* With variadic functions we could have, for example,
* both foo(numeric) and foo(variadic numeric[]) in the
* same namespace; if so we prefer the non-variadic match
* on efficiency grounds.
*/
preference = 1;
}
else if (!variadic && prevResult->nvargs > 0)
{
preference = -1;
}
else
{
/*----------
* We can't decide. This can happen with, for example,
* both foo(numeric, variadic numeric[]) and
* foo(variadic numeric[]) in the same namespace, or
* both foo(int) and foo (int, int default something)
* in the same namespace, or both foo(a int, b text)
* and foo(b text, a int) in the same namespace.
*----------
*/
preference = 0;
}
if (preference > 0)
{
/* keep previous result */
pfree(newResult);
continue;
}
else if (preference < 0)
{
/* remove previous result from the list */
if (prevResult == resultList)
resultList = prevResult->next;
else
{
FuncCandidateList prevPrevResult;
for (prevPrevResult = resultList;
prevPrevResult;
prevPrevResult = prevPrevResult->next)
{
if (prevResult == prevPrevResult->next)
{
prevPrevResult->next = prevResult->next;
break;
}
}
Assert(prevPrevResult); /* assert we found it */
}
pfree(prevResult);
/* fall through to add newResult to list */
}
else
{
/* mark old result as ambiguous, discard new */
prevResult->oid = InvalidOid;
pfree(newResult);
continue;
}
}
}
/*
* Okay to add it to result list
*/
newResult->next = resultList;
resultList = newResult;
}
ReleaseSysCacheList(catlist);
return resultList;
}
Definition at line 1378 of file namespace.c.
References _FuncCandidateList::args, elog, ERROR, FuncnameGetCandidates(), GETSTRUCT, HeapTupleIsValid, list_make1, list_member_oid(), makeString(), memcmp(), NameStr, _FuncCandidateList::next, NIL, ObjectIdGetDatum, _FuncCandidateList::oid, PG_CATALOG_NAMESPACE, PROCOID, recomputeNamespacePath(), ReleaseSysCache(), and SearchSysCache1.
Referenced by format_procedure_internal(), and pg_function_is_visible().
{
HeapTuple proctup;
Form_pg_proc procform;
Oid pronamespace;
bool visible;
proctup = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcid));
if (!HeapTupleIsValid(proctup))
elog(ERROR, "cache lookup failed for function %u", funcid);
procform = (Form_pg_proc) GETSTRUCT(proctup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
pronamespace = procform->pronamespace;
if (pronamespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, pronamespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another proc of the same name and arguments earlier in
* the path. So we must do a slow check to see if this is the same
* proc that would be found by FuncnameGetCandidates.
*/
char *proname = NameStr(procform->proname);
int nargs = procform->pronargs;
FuncCandidateList clist;
visible = false;
clist = FuncnameGetCandidates(list_make1(makeString(proname)),
nargs, NIL, false, false);
for (; clist; clist = clist->next)
{
if (memcmp(clist->args, procform->proargtypes.values,
nargs * sizeof(Oid)) == 0)
{
/* Found the expected entry; is it the right proc? */
visible = (clist->oid == funcid);
break;
}
}
}
ReleaseSysCache(proctup);
return visible;
}
Definition at line 3262 of file namespace.c.
References COLLNAMEENCNSP, DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetDatabaseEncoding(), GetDatabaseEncodingName(), GetSysCacheOid3, Int32GetDatum, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, and recomputeNamespacePath().
Referenced by ComputeIndexAttrs(), DefineCollation(), DefineDomain(), DefineRange(), get_object_address(), and LookupCollation().
{
char *schemaname;
char *collation_name;
int32 dbencoding = GetDatabaseEncoding();
Oid namespaceId;
Oid colloid;
ListCell *l;
/* deconstruct the name list */
DeconstructQualifiedName(name, &schemaname, &collation_name);
if (schemaname)
{
/* use exact schema given */
namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
if (missing_ok && !OidIsValid(namespaceId))
return InvalidOid;
/* first try for encoding-specific entry, then any-encoding */
colloid = GetSysCacheOid3(COLLNAMEENCNSP,
PointerGetDatum(collation_name),
Int32GetDatum(dbencoding),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(colloid))
return colloid;
colloid = GetSysCacheOid3(COLLNAMEENCNSP,
PointerGetDatum(collation_name),
Int32GetDatum(-1),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(colloid))
return colloid;
}
else
{
/* search for it in search path */
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
colloid = GetSysCacheOid3(COLLNAMEENCNSP,
PointerGetDatum(collation_name),
Int32GetDatum(dbencoding),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(colloid))
return colloid;
colloid = GetSysCacheOid3(COLLNAMEENCNSP,
PointerGetDatum(collation_name),
Int32GetDatum(-1),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(colloid))
return colloid;
}
}
/* Not found in path */
if (!missing_ok)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("collation \"%s\" for encoding \"%s\" does not exist",
NameListToString(name), GetDatabaseEncodingName())));
return InvalidOid;
}
Definition at line 3335 of file namespace.c.
References CONNAMENSP, DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, and recomputeNamespacePath().
Referenced by get_object_address().
{
char *schemaname;
char *conversion_name;
Oid namespaceId;
Oid conoid = InvalidOid;
ListCell *l;
/* deconstruct the name list */
DeconstructQualifiedName(name, &schemaname, &conversion_name);
if (schemaname)
{
/* use exact schema given */
namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
if (missing_ok && !OidIsValid(namespaceId))
conoid = InvalidOid;
else
conoid = GetSysCacheOid2(CONNAMENSP,
PointerGetDatum(conversion_name),
ObjectIdGetDatum(namespaceId));
}
else
{
/* search for it in search path */
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
conoid = GetSysCacheOid2(CONNAMENSP,
PointerGetDatum(conversion_name),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(conoid))
return conoid;
}
}
/* Not found in path */
if (!OidIsValid(conoid) && !missing_ok)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("conversion \"%s\" does not exist",
NameListToString(name))));
return conoid;
}
Definition at line 2846 of file namespace.c.
References CStringGetDatum, ereport, errcode(), errmsg(), ERROR, GetSysCacheOid1, NAMESPACENAME, and OidIsValid.
Referenced by convert_schema_name(), create_empty_extension(), CreateExtension(), get_object_address_unqualified(), InitTempTableNamespace(), LookupCreationNamespace(), LookupExplicitNamespace(), LookupNamespaceNoError(), objectNamesToOids(), QualifiedNameGetCreationNamespace(), RangeVarGetCreationNamespace(), recomputeNamespacePath(), RenameSchema(), and SetDefaultACLsInSchemas().
{
Oid oid;
oid = GetSysCacheOid1(NAMESPACENAME, CStringGetDatum(nspname));
if (!OidIsValid(oid) && !missing_ok)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_SCHEMA),
errmsg("schema \"%s\" does not exist", nspname)));
return oid;
}
Definition at line 2469 of file namespace.c.
References DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, recomputeNamespacePath(), and TSCONFIGNAMENSP.
Referenced by check_TSCurrentConfig(), DefineTSConfiguration(), get_object_address(), GetTSConfigTuple(), getTSCurrentConfig(), regconfigin(), and tsvector_update_trigger().
{
char *schemaname;
char *config_name;
Oid namespaceId;
Oid cfgoid = InvalidOid;
ListCell *l;
/* deconstruct the name list */
DeconstructQualifiedName(names, &schemaname, &config_name);
if (schemaname)
{
/* use exact schema given */
namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
if (missing_ok && !OidIsValid(namespaceId))
cfgoid = InvalidOid;
else
cfgoid = GetSysCacheOid2(TSCONFIGNAMENSP,
PointerGetDatum(config_name),
ObjectIdGetDatum(namespaceId));
}
else
{
/* search for it in search path */
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
cfgoid = GetSysCacheOid2(TSCONFIGNAMENSP,
PointerGetDatum(config_name),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(cfgoid))
break;
}
}
if (!OidIsValid(cfgoid) && !missing_ok)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("text search configuration \"%s\" does not exist",
NameListToString(names))));
return cfgoid;
}
Definition at line 2216 of file namespace.c.
References DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, recomputeNamespacePath(), and TSDICTNAMENSP.
Referenced by AlterTSDictionary(), get_object_address(), MakeConfigurationMapping(), regdictionaryin(), thesaurus_init(), tsa_set_curdict_byname(), and unaccent_dict().
{
char *schemaname;
char *dict_name;
Oid namespaceId;
Oid dictoid = InvalidOid;
ListCell *l;
/* deconstruct the name list */
DeconstructQualifiedName(names, &schemaname, &dict_name);
if (schemaname)
{
/* use exact schema given */
namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
if (missing_ok && !OidIsValid(namespaceId))
dictoid = InvalidOid;
else
dictoid = GetSysCacheOid2(TSDICTNAMENSP,
PointerGetDatum(dict_name),
ObjectIdGetDatum(namespaceId));
}
else
{
/* search for it in search path */
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
dictoid = GetSysCacheOid2(TSDICTNAMENSP,
PointerGetDatum(dict_name),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(dictoid))
break;
}
}
if (!OidIsValid(dictoid) && !missing_ok)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("text search dictionary \"%s\" does not exist",
NameListToString(names))));
return dictoid;
}
Definition at line 2090 of file namespace.c.
References DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, recomputeNamespacePath(), and TSPARSERNAMENSP.
Referenced by DefineTSConfiguration(), get_object_address(), GetCurrentParser(), ts_parse_byname(), ts_token_type_byname(), and tsa_set_curprs_byname().
{
char *schemaname;
char *parser_name;
Oid namespaceId;
Oid prsoid = InvalidOid;
ListCell *l;
/* deconstruct the name list */
DeconstructQualifiedName(names, &schemaname, &parser_name);
if (schemaname)
{
/* use exact schema given */
namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
if (missing_ok && !OidIsValid(namespaceId))
prsoid = InvalidOid;
else
prsoid = GetSysCacheOid2(TSPARSERNAMENSP,
PointerGetDatum(parser_name),
ObjectIdGetDatum(namespaceId));
}
else
{
/* search for it in search path */
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
prsoid = GetSysCacheOid2(TSPARSERNAMENSP,
PointerGetDatum(parser_name),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(prsoid))
break;
}
}
if (!OidIsValid(prsoid) && !missing_ok)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("text search parser \"%s\" does not exist",
NameListToString(names))));
return prsoid;
}
Definition at line 2343 of file namespace.c.
References DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, recomputeNamespacePath(), and TSTEMPLATENAMENSP.
Referenced by DefineTSDictionary(), and get_object_address().
{
char *schemaname;
char *template_name;
Oid namespaceId;
Oid tmploid = InvalidOid;
ListCell *l;
/* deconstruct the name list */
DeconstructQualifiedName(names, &schemaname, &template_name);
if (schemaname)
{
/* use exact schema given */
namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
if (missing_ok && !OidIsValid(namespaceId))
tmploid = InvalidOid;
else
tmploid = GetSysCacheOid2(TSTEMPLATENAMENSP,
PointerGetDatum(template_name),
ObjectIdGetDatum(namespaceId));
}
else
{
/* search for it in search path */
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
tmploid = GetSysCacheOid2(TSTEMPLATENAMENSP,
PointerGetDatum(template_name),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(tmploid))
break;
}
}
if (!OidIsValid(tmploid) && !missing_ok)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("text search template \"%s\" does not exist",
NameListToString(names))));
return tmploid;
}
| OverrideSearchPath* GetOverrideSearchPath | ( | MemoryContext | context | ) |
Definition at line 3077 of file namespace.c.
References activeCreationNamespace, OverrideSearchPath::addCatalog, OverrideSearchPath::addTemp, Assert, linitial_oid, list_copy(), list_delete_first(), MemoryContextSwitchTo(), myTempNamespace, palloc0(), PG_CATALOG_NAMESPACE, recomputeNamespacePath(), and OverrideSearchPath::schemas.
Referenced by CompleteCachedPlan(), CreateSchemaCommand(), OverrideSearchPathMatchesCurrent(), and RevalidateCachedQuery().
{
OverrideSearchPath *result;
List *schemas;
MemoryContext oldcxt;
recomputeNamespacePath();
oldcxt = MemoryContextSwitchTo(context);
result = (OverrideSearchPath *) palloc0(sizeof(OverrideSearchPath));
schemas = list_copy(activeSearchPath);
while (schemas && linitial_oid(schemas) != activeCreationNamespace)
{
if (linitial_oid(schemas) == myTempNamespace)
result->addTemp = true;
else
{
Assert(linitial_oid(schemas) == PG_CATALOG_NAMESPACE);
result->addCatalog = true;
}
schemas = list_delete_first(schemas);
}
result->schemas = schemas;
MemoryContextSwitchTo(oldcxt);
return result;
}
| int GetTempNamespaceBackendId | ( | Oid | namespaceId | ) |
Definition at line 3036 of file namespace.c.
References get_namespace_name(), and pfree().
Referenced by do_autovacuum(), pg_relation_filepath(), and RelationBuildDesc().
{
int result;
char *nspname;
/* See if the namespace name starts with "pg_temp_" or "pg_toast_temp_" */
nspname = get_namespace_name(namespaceId);
if (!nspname)
return InvalidBackendId; /* no such namespace? */
if (strncmp(nspname, "pg_temp_", 8) == 0)
result = atoi(nspname + 8);
else if (strncmp(nspname, "pg_toast_temp_", 14) == 0)
result = atoi(nspname + 14);
else
result = InvalidBackendId;
pfree(nspname);
return result;
}
| Oid GetTempToastNamespace | ( | void | ) |
Definition at line 3061 of file namespace.c.
References Assert, myTempToastNamespace, and OidIsValid.
Referenced by create_toast_table().
{
Assert(OidIsValid(myTempToastNamespace));
return myTempToastNamespace;
}
| void InitializeSearchPath | ( | void | ) |
Definition at line 3887 of file namespace.c.
References activeCreationNamespace, activeTempCreationPending, baseCreationNamespace, baseSearchPathValid, baseTempCreationPending, CacheRegisterSyscacheCallback(), GetUserId(), IsBootstrapProcessingMode, list_make1_oid, MemoryContextSwitchTo(), NamespaceCallback(), NAMESPACEOID, namespaceUser, PG_CATALOG_NAMESPACE, and TopMemoryContext.
Referenced by InitPostgres().
{
if (IsBootstrapProcessingMode())
{
/*
* In bootstrap mode, the search path must be 'pg_catalog' so that
* tables are created in the proper namespace; ignore the GUC setting.
*/
MemoryContext oldcxt;
oldcxt = MemoryContextSwitchTo(TopMemoryContext);
baseSearchPath = list_make1_oid(PG_CATALOG_NAMESPACE);
MemoryContextSwitchTo(oldcxt);
baseCreationNamespace = PG_CATALOG_NAMESPACE;
baseTempCreationPending = false;
baseSearchPathValid = true;
namespaceUser = GetUserId();
activeSearchPath = baseSearchPath;
activeCreationNamespace = baseCreationNamespace;
activeTempCreationPending = baseTempCreationPending;
}
else
{
/*
* In normal mode, arrange for a callback on any syscache invalidation
* of pg_namespace rows.
*/
CacheRegisterSyscacheCallback(NAMESPACEOID,
NamespaceCallback,
(Datum) 0);
/* Force search path to be recomputed on next use */
baseSearchPathValid = false;
}
}
Definition at line 2997 of file namespace.c.
References get_namespace_name(), and pfree().
Referenced by CheckSetNamespace(), EventTriggerSQLDropAddObject(), isOtherTempNamespace(), and RangeVarAdjustRelationPersistence().
{
bool result;
char *nspname;
/* True if the namespace name starts with "pg_temp_" or "pg_toast_temp_" */
nspname = get_namespace_name(namespaceId);
if (!nspname)
return false; /* no such namespace? */
result = (strncmp(nspname, "pg_temp_", 8) == 0) ||
(strncmp(nspname, "pg_toast_temp_", 14) == 0);
pfree(nspname);
return result;
}
Definition at line 3020 of file namespace.c.
References isAnyTempNamespace(), and isTempOrToastNamespace().
Referenced by pg_is_other_temp_schema().
{
/* If it's my own temp namespace, say "false" */
if (isTempOrToastNamespace(namespaceId))
return false;
/* Else, if it's any temp namespace, say "true" */
return isAnyTempNamespace(namespaceId);
}
Definition at line 2959 of file namespace.c.
References myTempNamespace, and OidIsValid.
Referenced by ExecCheckXactReadOnly(), pg_namespace_aclmask(), and ReindexDatabase().
{
if (OidIsValid(myTempNamespace) && myTempNamespace == namespaceId)
return true;
return false;
}
Definition at line 2983 of file namespace.c.
References myTempNamespace, myTempToastNamespace, and OidIsValid.
Referenced by create_toast_table(), isOtherTempNamespace(), pg_relation_filepath(), RangeVarAdjustRelationPersistence(), RelationBuildDesc(), and RelationBuildLocalRelation().
{
if (OidIsValid(myTempNamespace) &&
(myTempNamespace == namespaceId || myTempToastNamespace == namespaceId))
return true;
return false;
}
Definition at line 2971 of file namespace.c.
References myTempToastNamespace, and OidIsValid.
Referenced by IsToastNamespace().
{
if (OidIsValid(myTempToastNamespace) && myTempToastNamespace == namespaceId)
return true;
return false;
}
| Oid LookupCreationNamespace | ( | const char * | nspname | ) |
Definition at line 2726 of file namespace.c.
References ACL_CREATE, ACL_KIND_NAMESPACE, aclcheck_error(), ACLCHECK_OK, get_namespace_oid(), GetUserId(), InitTempTableNamespace(), myTempNamespace, OidIsValid, and pg_namespace_aclcheck().
Referenced by AlterExtensionNamespace(), AlterTypeNamespace(), and ExecAlterObjectSchemaStmt().
{
Oid namespaceId;
AclResult aclresult;
/* check for pg_temp alias */
if (strcmp(nspname, "pg_temp") == 0)
{
/* Initialize temp namespace if first time through */
if (!OidIsValid(myTempNamespace))
InitTempTableNamespace();
return myTempNamespace;
}
namespaceId = get_namespace_oid(nspname, false);
aclresult = pg_namespace_aclcheck(namespaceId, GetUserId(), ACL_CREATE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
nspname);
return namespaceId;
}
Definition at line 2683 of file namespace.c.
References ACL_KIND_NAMESPACE, ACL_USAGE, aclcheck_error(), ACLCHECK_OK, get_namespace_oid(), GetUserId(), InvokeNamespaceSearchHook, myTempNamespace, OidIsValid, and pg_namespace_aclcheck().
Referenced by AfterTriggerSetState(), FuncnameGetCandidates(), get_collation_oid(), get_conversion_oid(), get_ts_config_oid(), get_ts_dict_oid(), get_ts_parser_oid(), get_ts_template_oid(), GetIndexOpClass(), LookupTypeName(), make_oper_cache_key(), objectsInSchemaToOids(), OpClassCacheLookup(), OpernameGetCandidates(), OpernameGetOprid(), OpFamilyCacheLookup(), RangeVarGetRelidExtended(), schema_to_xml(), schema_to_xml_and_xmlschema(), and schema_to_xmlschema_internal().
{
Oid namespaceId;
AclResult aclresult;
/* check for pg_temp alias */
if (strcmp(nspname, "pg_temp") == 0)
{
if (OidIsValid(myTempNamespace))
return myTempNamespace;
/*
* Since this is used only for looking up existing objects, there is
* no point in trying to initialize the temp namespace here; and doing
* so might create problems for some callers --- just fall through.
*/
}
namespaceId = get_namespace_oid(nspname, missing_ok);
if (missing_ok && !OidIsValid(namespaceId))
return InvalidOid;
aclresult = pg_namespace_aclcheck(namespaceId, GetUserId(), ACL_USAGE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
nspname);
/* Schema search hook for this lookup */
InvokeNamespaceSearchHook(namespaceId, true);
return namespaceId;
}
| Oid LookupNamespaceNoError | ( | const char * | nspname | ) |
Definition at line 2653 of file namespace.c.
References get_namespace_oid(), InvokeNamespaceSearchHook, myTempNamespace, and OidIsValid.
Referenced by refnameRangeTblEntry().
{
/* check for pg_temp alias */
if (strcmp(nspname, "pg_temp") == 0)
{
if (OidIsValid(myTempNamespace))
{
InvokeNamespaceSearchHook(myTempNamespace, true);
return myTempNamespace;
}
/*
* Since this is used only for looking up existing objects, there is
* no point in trying to initialize the temp namespace here; and doing
* so might create problems for some callers. Just report "not found".
*/
return InvalidOid;
}
return get_namespace_oid(nspname, true);
}
Definition at line 2864 of file namespace.c.
References RangeVar::catalogname, ereport, errcode(), errmsg(), ERROR, linitial, list_length(), lsecond, lthird, makeRangeVar(), NameListToString(), NULL, RangeVar::relname, RangeVar::schemaname, and strVal.
Referenced by bt_metap(), bt_page_items(), bt_page_stats(), convert_table_name(), currtid_byrelname(), get_object_address_attribute(), get_object_address_relobject(), get_raw_page_internal(), get_rel_from_relname(), get_relation_by_qualified_name(), nextval(), pg_get_serial_sequence(), pg_get_viewdef_name(), pg_get_viewdef_name_ext(), pg_relpages(), pgrowlocks(), pgstatindex(), pgstattuple(), process_owned_by(), regclassin(), RelationNameGetTupleDesc(), RemoveRelations(), and text_regclass().
{
RangeVar *rel = makeRangeVar(NULL, NULL, -1);
switch (list_length(names))
{
case 1:
rel->relname = strVal(linitial(names));
break;
case 2:
rel->schemaname = strVal(linitial(names));
rel->relname = strVal(lsecond(names));
break;
case 3:
rel->catalogname = strVal(linitial(names));
rel->schemaname = strVal(lsecond(names));
rel->relname = strVal(lthird(names));
break;
default:
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("improper relation name (too many dotted names): %s",
NameListToString(names))));
break;
}
return rel;
}
| char* NameListToQuotedString | ( | List * | names | ) |
Definition at line 2938 of file namespace.c.
References appendStringInfoChar(), appendStringInfoString(), initStringInfo(), lfirst, list_head(), quote_identifier(), and strVal.
{
StringInfoData string;
ListCell *l;
initStringInfo(&string);
foreach(l, names)
{
if (l != list_head(names))
appendStringInfoChar(&string, '.');
appendStringInfoString(&string, quote_identifier(strVal(lfirst(l))));
}
return string.data;
}
| char* NameListToString | ( | List * | names | ) |
Definition at line 2904 of file namespace.c.
References appendStringInfoChar(), appendStringInfoString(), elog, ERROR, initStringInfo(), IsA, lfirst, list_head(), name, nodeTag, and strVal.
Referenced by AggregateCreate(), AlterFunction(), AlterTSConfiguration(), AlterTSDictionary(), check_object_ownership(), CreateConversionCommand(), CreateEventTrigger(), CreateProceduralLanguage(), CreateTrigger(), DeconstructQualifiedName(), defGetString(), DefineOperator(), DefineType(), does_not_exist_skipping(), dropOperators(), dropProcedures(), ExpandColumnRefStar(), findRangeSubOpclass(), findTypeAnalyzeFunction(), findTypeInputFunction(), findTypeOutputFunction(), findTypeTypmodinFunction(), findTypeTypmodoutFunction(), func_signature_string(), get_collation_oid(), get_conversion_oid(), get_object_address_attribute(), get_ts_config_oid(), get_ts_dict_oid(), get_ts_parser_oid(), get_ts_template_oid(), GetIndexOpClass(), lookup_fdw_handler_func(), LookupAggNameTypeNames(), LookupTypeName(), makeRangeVarFromNameList(), op_signature_string(), OpClassCacheLookup(), OperatorCreate(), OpFamilyCacheLookup(), ParseFuncOrColumn(), plpgsql_post_column_ref(), RemoveObjects(), storeOperators(), storeProcedures(), and transformColumnRef().
{
StringInfoData string;
ListCell *l;
initStringInfo(&string);
foreach(l, names)
{
Node *name = (Node *) lfirst(l);
if (l != list_head(names))
appendStringInfoChar(&string, '.');
if (IsA(name, String))
appendStringInfoString(&string, strVal(name));
else if (IsA(name, A_Star))
appendStringInfoString(&string, "*");
else
elog(ERROR, "unexpected node type in name list: %d",
(int) nodeTag(name));
}
return string.data;
}
Definition at line 1788 of file namespace.c.
References CLAOID, elog, ERROR, GETSTRUCT, HeapTupleIsValid, list_member_oid(), NameStr, ObjectIdGetDatum, OpclassnameGetOpcid(), PG_CATALOG_NAMESPACE, recomputeNamespacePath(), ReleaseSysCache(), and SearchSysCache1.
Referenced by get_opclass_name(), getObjectDescription(), and pg_opclass_is_visible().
{
HeapTuple opctup;
Form_pg_opclass opcform;
Oid opcnamespace;
bool visible;
opctup = SearchSysCache1(CLAOID, ObjectIdGetDatum(opcid));
if (!HeapTupleIsValid(opctup))
elog(ERROR, "cache lookup failed for opclass %u", opcid);
opcform = (Form_pg_opclass) GETSTRUCT(opctup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
opcnamespace = opcform->opcnamespace;
if (opcnamespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, opcnamespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another opclass of the same name earlier in the path. So
* we must do a slow check to see if this opclass would be found by
* OpclassnameGetOpcid.
*/
char *opcname = NameStr(opcform->opcname);
visible = (OpclassnameGetOpcid(opcform->opcmethod, opcname) == opcid);
}
ReleaseSysCache(opctup);
return visible;
}
Definition at line 1755 of file namespace.c.
References CLAAMNAMENSP, GetSysCacheOid3, lfirst_oid, myTempNamespace, ObjectIdGetDatum, OidIsValid, PointerGetDatum, and recomputeNamespacePath().
Referenced by GetIndexOpClass(), OpClassCacheLookup(), and OpclassIsVisible().
{
Oid opcid;
ListCell *l;
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
opcid = GetSysCacheOid3(CLAAMNAMENSP,
ObjectIdGetDatum(amid),
PointerGetDatum(opcname),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(opcid))
return opcid;
}
/* Not found in path */
return InvalidOid;
}
Definition at line 1702 of file namespace.c.
References elog, ERROR, GETSTRUCT, HeapTupleIsValid, list_make1, list_member_oid(), makeString(), NameStr, ObjectIdGetDatum, OpernameGetOprid(), OPEROID, PG_CATALOG_NAMESPACE, recomputeNamespacePath(), ReleaseSysCache(), and SearchSysCache1.
Referenced by format_operator_internal(), and pg_operator_is_visible().
{
HeapTuple oprtup;
Form_pg_operator oprform;
Oid oprnamespace;
bool visible;
oprtup = SearchSysCache1(OPEROID, ObjectIdGetDatum(oprid));
if (!HeapTupleIsValid(oprtup))
elog(ERROR, "cache lookup failed for operator %u", oprid);
oprform = (Form_pg_operator) GETSTRUCT(oprtup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
oprnamespace = oprform->oprnamespace;
if (oprnamespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, oprnamespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another operator of the same name and arguments earlier
* in the path. So we must do a slow check to see if this is the same
* operator that would be found by OpernameGetOprId.
*/
char *oprname = NameStr(oprform->oprname);
visible = (OpernameGetOprid(list_make1(makeString(oprname)),
oprform->oprleft, oprform->oprright)
== oprid);
}
ReleaseSysCache(oprtup);
return visible;
}
| FuncCandidateList OpernameGetCandidates | ( | List * | names, | |
| char | oprkind | |||
| ) |
Definition at line 1545 of file namespace.c.
References _FuncCandidateList::argnumbers, _FuncCandidateList::args, Assert, CStringGetDatum, DeconstructQualifiedName(), GETSTRUCT, HeapTupleGetOid, i, lfirst_oid, LookupExplicitNamespace(), catclist::members, myTempNamespace, catclist::n_members, _FuncCandidateList::nargs, _FuncCandidateList::ndargs, _FuncCandidateList::next, NULL, _FuncCandidateList::nvargs, _FuncCandidateList::oid, OidIsValid, OPERNAMENSP, catclist::ordered, palloc(), _FuncCandidateList::pathpos, recomputeNamespacePath(), ReleaseSysCacheList, SearchSysCacheList1, SPACE_PER_OP, and catctup::tuple.
Referenced by left_oper(), oper(), regoperin(), regoperout(), and right_oper().
{
FuncCandidateList resultList = NULL;
char *resultSpace = NULL;
int nextResult = 0;
char *schemaname;
char *opername;
Oid namespaceId;
CatCList *catlist;
int i;
/* deconstruct the name list */
DeconstructQualifiedName(names, &schemaname, &opername);
if (schemaname)
{
/* use exact schema given */
namespaceId = LookupExplicitNamespace(schemaname, false);
}
else
{
/* flag to indicate we need namespace search */
namespaceId = InvalidOid;
recomputeNamespacePath();
}
/* Search syscache by name only */
catlist = SearchSysCacheList1(OPERNAMENSP, CStringGetDatum(opername));
/*
* In typical scenarios, most if not all of the operators found by the
* catcache search will end up getting returned; and there can be quite a
* few, for common operator names such as '=' or '+'. To reduce the time
* spent in palloc, we allocate the result space as an array large enough
* to hold all the operators. The original coding of this routine did a
* separate palloc for each operator, but profiling revealed that the
* pallocs used an unreasonably large fraction of parsing time.
*/
#define SPACE_PER_OP MAXALIGN(sizeof(struct _FuncCandidateList) + sizeof(Oid))
if (catlist->n_members > 0)
resultSpace = palloc(catlist->n_members * SPACE_PER_OP);
for (i = 0; i < catlist->n_members; i++)
{
HeapTuple opertup = &catlist->members[i]->tuple;
Form_pg_operator operform = (Form_pg_operator) GETSTRUCT(opertup);
int pathpos = 0;
FuncCandidateList newResult;
/* Ignore operators of wrong kind, if specific kind requested */
if (oprkind && operform->oprkind != oprkind)
continue;
if (OidIsValid(namespaceId))
{
/* Consider only opers in specified namespace */
if (operform->oprnamespace != namespaceId)
continue;
/* No need to check args, they must all be different */
}
else
{
/*
* Consider only opers that are in the search path and are not in
* the temp namespace.
*/
ListCell *nsp;
foreach(nsp, activeSearchPath)
{
if (operform->oprnamespace == lfirst_oid(nsp) &&
operform->oprnamespace != myTempNamespace)
break;
pathpos++;
}
if (nsp == NULL)
continue; /* oper is not in search path */
/*
* Okay, it's in the search path, but does it have the same
* arguments as something we already accepted? If so, keep only
* the one that appears earlier in the search path.
*
* If we have an ordered list from SearchSysCacheList (the normal
* case), then any conflicting oper must immediately adjoin this
* one in the list, so we only need to look at the newest result
* item. If we have an unordered list, we have to scan the whole
* result list.
*/
if (resultList)
{
FuncCandidateList prevResult;
if (catlist->ordered)
{
if (operform->oprleft == resultList->args[0] &&
operform->oprright == resultList->args[1])
prevResult = resultList;
else
prevResult = NULL;
}
else
{
for (prevResult = resultList;
prevResult;
prevResult = prevResult->next)
{
if (operform->oprleft == prevResult->args[0] &&
operform->oprright == prevResult->args[1])
break;
}
}
if (prevResult)
{
/* We have a match with a previous result */
Assert(pathpos != prevResult->pathpos);
if (pathpos > prevResult->pathpos)
continue; /* keep previous result */
/* replace previous result */
prevResult->pathpos = pathpos;
prevResult->oid = HeapTupleGetOid(opertup);
continue; /* args are same, of course */
}
}
}
/*
* Okay to add it to result list
*/
newResult = (FuncCandidateList) (resultSpace + nextResult);
nextResult += SPACE_PER_OP;
newResult->pathpos = pathpos;
newResult->oid = HeapTupleGetOid(opertup);
newResult->nargs = 2;
newResult->nvargs = 0;
newResult->ndargs = 0;
newResult->argnumbers = NULL;
newResult->args[0] = operform->oprleft;
newResult->args[1] = operform->oprright;
newResult->next = resultList;
resultList = newResult;
}
ReleaseSysCacheList(catlist);
return resultList;
}
Definition at line 1448 of file namespace.c.
References CStringGetDatum, DeconstructQualifiedName(), GETSTRUCT, HeapTupleGetOid, HeapTupleIsValid, i, lfirst_oid, LookupExplicitNamespace(), catclist::members, myTempNamespace, catclist::n_members, ObjectIdGetDatum, OPERNAMENSP, recomputeNamespacePath(), ReleaseSysCache(), ReleaseSysCacheList, SearchSysCache4, SearchSysCacheList3, and catctup::tuple.
Referenced by binary_oper_exact(), left_oper(), LookupOperName(), OperatorIsVisible(), regoperatorin(), and right_oper().
{
char *schemaname;
char *opername;
CatCList *catlist;
ListCell *l;
/* deconstruct the name list */
DeconstructQualifiedName(names, &schemaname, &opername);
if (schemaname)
{
/* search only in exact schema given */
Oid namespaceId;
HeapTuple opertup;
namespaceId = LookupExplicitNamespace(schemaname, false);
opertup = SearchSysCache4(OPERNAMENSP,
CStringGetDatum(opername),
ObjectIdGetDatum(oprleft),
ObjectIdGetDatum(oprright),
ObjectIdGetDatum(namespaceId));
if (HeapTupleIsValid(opertup))
{
Oid result = HeapTupleGetOid(opertup);
ReleaseSysCache(opertup);
return result;
}
return InvalidOid;
}
/* Search syscache by name and argument types */
catlist = SearchSysCacheList3(OPERNAMENSP,
CStringGetDatum(opername),
ObjectIdGetDatum(oprleft),
ObjectIdGetDatum(oprright));
if (catlist->n_members == 0)
{
/* no hope, fall out early */
ReleaseSysCacheList(catlist);
return InvalidOid;
}
/*
* We have to find the list member that is first in the search path, if
* there's more than one. This doubly-nested loop looks ugly, but in
* practice there should usually be few catlist members.
*/
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
int i;
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
for (i = 0; i < catlist->n_members; i++)
{
HeapTuple opertup = &catlist->members[i]->tuple;
Form_pg_operator operform = (Form_pg_operator) GETSTRUCT(opertup);
if (operform->oprnamespace == namespaceId)
{
Oid result = HeapTupleGetOid(opertup);
ReleaseSysCacheList(catlist);
return result;
}
}
}
ReleaseSysCacheList(catlist);
return InvalidOid;
}
Definition at line 1871 of file namespace.c.
References elog, ERROR, GETSTRUCT, HeapTupleIsValid, list_member_oid(), NameStr, ObjectIdGetDatum, OpfamilynameGetOpfid(), OPFAMILYOID, PG_CATALOG_NAMESPACE, recomputeNamespacePath(), ReleaseSysCache(), and SearchSysCache1.
Referenced by getOpFamilyDescription(), and pg_opfamily_is_visible().
{
HeapTuple opftup;
Form_pg_opfamily opfform;
Oid opfnamespace;
bool visible;
opftup = SearchSysCache1(OPFAMILYOID, ObjectIdGetDatum(opfid));
if (!HeapTupleIsValid(opftup))
elog(ERROR, "cache lookup failed for opfamily %u", opfid);
opfform = (Form_pg_opfamily) GETSTRUCT(opftup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
opfnamespace = opfform->opfnamespace;
if (opfnamespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, opfnamespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another opfamily of the same name earlier in the path. So
* we must do a slow check to see if this opfamily would be found by
* OpfamilynameGetOpfid.
*/
char *opfname = NameStr(opfform->opfname);
visible = (OpfamilynameGetOpfid(opfform->opfmethod, opfname) == opfid);
}
ReleaseSysCache(opftup);
return visible;
}
Definition at line 1838 of file namespace.c.
References GetSysCacheOid3, lfirst_oid, myTempNamespace, ObjectIdGetDatum, OidIsValid, OPFAMILYAMNAMENSP, PointerGetDatum, and recomputeNamespacePath().
Referenced by OpFamilyCacheLookup(), and OpfamilyIsVisible().
{
Oid opfid;
ListCell *l;
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
opfid = GetSysCacheOid3(OPFAMILYAMNAMENSP,
ObjectIdGetDatum(amid),
PointerGetDatum(opfname),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(opfid))
return opfid;
}
/* Not found in path */
return InvalidOid;
}
| bool OverrideSearchPathMatchesCurrent | ( | OverrideSearchPath * | path | ) |
Definition at line 3129 of file namespace.c.
References OverrideSearchPath::addCatalog, OverrideSearchPath::addTemp, cur, CurrentMemoryContext, equal(), GetOverrideSearchPath(), list_free(), pfree(), and OverrideSearchPath::schemas.
Referenced by RevalidateCachedQuery().
{
/* Easiest way to do this is GetOverrideSearchPath() and compare */
bool result;
OverrideSearchPath *cur;
cur = GetOverrideSearchPath(CurrentMemoryContext);
if (path->addCatalog == cur->addCatalog &&
path->addTemp == cur->addTemp &&
equal(path->schemas, cur->schemas))
result = true;
else
result = false;
list_free(cur->schemas);
pfree(cur);
return result;
}
| void PopOverrideSearchPath | ( | void | ) |
Definition at line 3224 of file namespace.c.
References activeCreationNamespace, activeTempCreationPending, baseCreationNamespace, baseTempCreationPending, OverrideStackEntry::creationNamespace, elog, ERROR, GetCurrentTransactionNestLevel(), linitial, list_delete_first(), list_free(), OverrideStackEntry::nestLevel, NIL, pfree(), and OverrideStackEntry::searchPath.
Referenced by CreateSchemaCommand().
{
OverrideStackEntry *entry;
/* Sanity checks. */
if (overrideStack == NIL)
elog(ERROR, "bogus PopOverrideSearchPath call");
entry = (OverrideStackEntry *) linitial(overrideStack);
if (entry->nestLevel != GetCurrentTransactionNestLevel())
elog(ERROR, "bogus PopOverrideSearchPath call");
/* Pop the stack and free storage. */
overrideStack = list_delete_first(overrideStack);
list_free(entry->searchPath);
pfree(entry);
/* Activate the next level down. */
if (overrideStack)
{
entry = (OverrideStackEntry *) linitial(overrideStack);
activeSearchPath = entry->searchPath;
activeCreationNamespace = entry->creationNamespace;
activeTempCreationPending = false; /* XXX is this OK? */
}
else
{
/* If not baseSearchPathValid, this is useless but harmless */
activeSearchPath = baseSearchPath;
activeCreationNamespace = baseCreationNamespace;
activeTempCreationPending = baseTempCreationPending;
}
}
| void PushOverrideSearchPath | ( | OverrideSearchPath * | newpath | ) |
Definition at line 3165 of file namespace.c.
References activeCreationNamespace, activeTempCreationPending, OverrideSearchPath::addCatalog, OverrideSearchPath::addTemp, OverrideStackEntry::creationNamespace, GetCurrentTransactionNestLevel(), lcons(), lcons_oid(), linitial_oid, list_copy(), MemoryContextSwitchTo(), myTempNamespace, OverrideStackEntry::nestLevel, NIL, OidIsValid, palloc(), PG_CATALOG_NAMESPACE, OverrideSearchPath::schemas, OverrideStackEntry::searchPath, and TopMemoryContext.
Referenced by CreateSchemaCommand().
{
OverrideStackEntry *entry;
List *oidlist;
Oid firstNS;
MemoryContext oldcxt;
/*
* Copy the list for safekeeping, and insert implicitly-searched
* namespaces as needed. This code should track recomputeNamespacePath.
*/
oldcxt = MemoryContextSwitchTo(TopMemoryContext);
oidlist = list_copy(newpath->schemas);
/*
* Remember the first member of the explicit list.
*/
if (oidlist == NIL)
firstNS = InvalidOid;
else
firstNS = linitial_oid(oidlist);
/*
* Add any implicitly-searched namespaces to the list. Note these go on
* the front, not the back; also notice that we do not check USAGE
* permissions for these.
*/
if (newpath->addCatalog)
oidlist = lcons_oid(PG_CATALOG_NAMESPACE, oidlist);
if (newpath->addTemp && OidIsValid(myTempNamespace))
oidlist = lcons_oid(myTempNamespace, oidlist);
/*
* Build the new stack entry, then insert it at the head of the list.
*/
entry = (OverrideStackEntry *) palloc(sizeof(OverrideStackEntry));
entry->searchPath = oidlist;
entry->creationNamespace = firstNS;
entry->nestLevel = GetCurrentTransactionNestLevel();
overrideStack = lcons(entry, overrideStack);
/* And make it active. */
activeSearchPath = entry->searchPath;
activeCreationNamespace = entry->creationNamespace;
activeTempCreationPending = false; /* XXX is this OK? */
MemoryContextSwitchTo(oldcxt);
}
Definition at line 2797 of file namespace.c.
References activeCreationNamespace, activeTempCreationPending, DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, get_namespace_oid(), InitTempTableNamespace(), myTempNamespace, OidIsValid, and recomputeNamespacePath().
Referenced by compute_return_type(), CreateConversionCommand(), CreateFunction(), DefineAggregate(), DefineCollation(), DefineDomain(), DefineEnum(), DefineOpClass(), DefineOperator(), DefineOpFamily(), DefineRange(), DefineTSConfiguration(), DefineTSDictionary(), DefineTSParser(), DefineTSTemplate(), DefineType(), and get_other_operator().
{
char *schemaname;
Oid namespaceId;
/* deconstruct the name list */
DeconstructQualifiedName(names, &schemaname, objname_p);
if (schemaname)
{
/* check for pg_temp alias */
if (strcmp(schemaname, "pg_temp") == 0)
{
/* Initialize temp namespace if first time through */
if (!OidIsValid(myTempNamespace))
InitTempTableNamespace();
return myTempNamespace;
}
/* use exact schema given */
namespaceId = get_namespace_oid(schemaname, false);
/* we do not check for USAGE rights here! */
}
else
{
/* use the default creation namespace */
recomputeNamespacePath();
if (activeTempCreationPending)
{
/* Need to initialize temp namespace */
InitTempTableNamespace();
return myTempNamespace;
}
namespaceId = activeCreationNamespace;
if (!OidIsValid(namespaceId))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_SCHEMA),
errmsg("no schema has been selected to create in")));
}
return namespaceId;
}
Definition at line 626 of file namespace.c.
References ereport, errcode(), errmsg(), ERROR, isAnyTempNamespace(), isTempOrToastNamespace(), RangeVar::relpersistence, RELPERSISTENCE_PERMANENT, and RELPERSISTENCE_TEMP.
Referenced by DefineCompositeType(), RangeVarGetAndCheckCreationNamespace(), and transformColumnDefinition().
{
switch (newRelation->relpersistence)
{
case RELPERSISTENCE_TEMP:
if (!isTempOrToastNamespace(nspid))
{
if (isAnyTempNamespace(nspid))
ereport(ERROR,
(errcode(ERRCODE_INVALID_TABLE_DEFINITION),
errmsg("cannot create relations in temporary schemas of other sessions")));
else
ereport(ERROR,
(errcode(ERRCODE_INVALID_TABLE_DEFINITION),
errmsg("cannot create temporary relation in non-temporary schema")));
}
break;
case RELPERSISTENCE_PERMANENT:
if (isTempOrToastNamespace(nspid))
newRelation->relpersistence = RELPERSISTENCE_TEMP;
else if (isAnyTempNamespace(nspid))
ereport(ERROR,
(errcode(ERRCODE_INVALID_TABLE_DEFINITION),
errmsg("cannot create relations in temporary schemas of other sessions")));
break;
default:
if (isAnyTempNamespace(nspid))
ereport(ERROR,
(errcode(ERRCODE_INVALID_TABLE_DEFINITION),
errmsg("only temporary relations may be created in temporary schemas")));
}
}
| Oid RangeVarGetAndCheckCreationNamespace | ( | RangeVar * | newRelation, | |
| LOCKMODE | lockmode, | |||
| Oid * | existing_relation_id | |||
| ) |
Definition at line 519 of file namespace.c.
References AccessShareLock, ACL_CREATE, ACL_KIND_CLASS, ACL_KIND_NAMESPACE, aclcheck_error(), ACLCHECK_NOT_OWNER, ACLCHECK_OK, Assert, RangeVar::catalogname, ereport, errcode(), errmsg(), ERROR, get_database_name(), get_namespace_name(), get_relname_relid(), GetUserId(), IsBootstrapProcessingMode, LockDatabaseObject(), LockRelationOid(), MyDatabaseId, NamespaceRelationId, NoLock, NULL, OidIsValid, pg_class_ownercheck(), pg_namespace_aclcheck(), RangeVarAdjustRelationPersistence(), RangeVarGetCreationNamespace(), RangeVar::relname, RangeVar::schemaname, SharedInvalidMessageCounter, UnlockDatabaseObject(), and UnlockRelationOid().
Referenced by AlterTableNamespace(), DefineCompositeType(), DefineRelation(), DefineVirtualRelation(), and transformCreateStmt().
{
uint64 inval_count;
Oid relid;
Oid oldrelid = InvalidOid;
Oid nspid;
Oid oldnspid = InvalidOid;
bool retry = false;
/*
* We check the catalog name and then ignore it.
*/
if (relation->catalogname)
{
if (strcmp(relation->catalogname, get_database_name(MyDatabaseId)) != 0)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cross-database references are not implemented: \"%s.%s.%s\"",
relation->catalogname, relation->schemaname,
relation->relname)));
}
/*
* As in RangeVarGetRelidExtended(), we guard against concurrent DDL
* operations by tracking whether any invalidation messages are processed
* while we're doing the name lookups and acquiring locks. See comments
* in that function for a more detailed explanation of this logic.
*/
for (;;)
{
AclResult aclresult;
inval_count = SharedInvalidMessageCounter;
/* Look up creation namespace and check for existing relation. */
nspid = RangeVarGetCreationNamespace(relation);
Assert(OidIsValid(nspid));
if (existing_relation_id != NULL)
relid = get_relname_relid(relation->relname, nspid);
else
relid = InvalidOid;
/*
* In bootstrap processing mode, we don't bother with permissions or
* locking. Permissions might not be working yet, and locking is
* unnecessary.
*/
if (IsBootstrapProcessingMode())
break;
/* Check namespace permissions. */
aclresult = pg_namespace_aclcheck(nspid, GetUserId(), ACL_CREATE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
get_namespace_name(nspid));
if (retry)
{
/* If nothing changed, we're done. */
if (relid == oldrelid && nspid == oldnspid)
break;
/* If creation namespace has changed, give up old lock. */
if (nspid != oldnspid)
UnlockDatabaseObject(NamespaceRelationId, oldnspid, 0,
AccessShareLock);
/* If name points to something different, give up old lock. */
if (relid != oldrelid && OidIsValid(oldrelid) && lockmode != NoLock)
UnlockRelationOid(oldrelid, lockmode);
}
/* Lock namespace. */
if (nspid != oldnspid)
LockDatabaseObject(NamespaceRelationId, nspid, 0, AccessShareLock);
/* Lock relation, if required if and we have permission. */
if (lockmode != NoLock && OidIsValid(relid))
{
if (!pg_class_ownercheck(relid, GetUserId()))
aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_CLASS,
relation->relname);
if (relid != oldrelid)
LockRelationOid(relid, lockmode);
}
/* If no invalidation message were processed, we're done! */
if (inval_count == SharedInvalidMessageCounter)
break;
/* Something may have changed, so recheck our work. */
retry = true;
oldrelid = relid;
oldnspid = nspid;
}
RangeVarAdjustRelationPersistence(relation, nspid);
if (existing_relation_id != NULL)
*existing_relation_id = relid;
return nspid;
}
Definition at line 432 of file namespace.c.
References activeCreationNamespace, activeTempCreationPending, RangeVar::catalogname, ereport, errcode(), errmsg(), ERROR, get_database_name(), get_namespace_oid(), InitTempTableNamespace(), MyDatabaseId, myTempNamespace, OidIsValid, recomputeNamespacePath(), RangeVar::relname, RangeVar::relpersistence, RELPERSISTENCE_TEMP, and RangeVar::schemaname.
Referenced by RangeVarGetAndCheckCreationNamespace(), and transformColumnDefinition().
{
Oid namespaceId;
/*
* We check the catalog name and then ignore it.
*/
if (newRelation->catalogname)
{
if (strcmp(newRelation->catalogname, get_database_name(MyDatabaseId)) != 0)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cross-database references are not implemented: \"%s.%s.%s\"",
newRelation->catalogname, newRelation->schemaname,
newRelation->relname)));
}
if (newRelation->schemaname)
{
/* check for pg_temp alias */
if (strcmp(newRelation->schemaname, "pg_temp") == 0)
{
/* Initialize temp namespace if first time through */
if (!OidIsValid(myTempNamespace))
InitTempTableNamespace();
return myTempNamespace;
}
/* use exact schema given */
namespaceId = get_namespace_oid(newRelation->schemaname, false);
/* we do not check for USAGE rights here! */
}
else if (newRelation->relpersistence == RELPERSISTENCE_TEMP)
{
/* Initialize temp namespace if first time through */
if (!OidIsValid(myTempNamespace))
InitTempTableNamespace();
return myTempNamespace;
}
else
{
/* use the default creation namespace */
recomputeNamespacePath();
if (activeTempCreationPending)
{
/* Need to initialize temp namespace */
InitTempTableNamespace();
return myTempNamespace;
}
namespaceId = activeCreationNamespace;
if (!OidIsValid(namespaceId))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_SCHEMA),
errmsg("no schema has been selected to create in")));
}
/* Note: callers will check for CREATE rights when appropriate */
return namespaceId;
}
| Oid RangeVarGetRelidExtended | ( | const RangeVar * | relation, | |
| LOCKMODE | lockmode, | |||
| bool | missing_ok, | |||
| bool | nowait, | |||
| RangeVarGetRelidCallback | callback, | |||
| void * | callback_arg | |||
| ) |
Definition at line 230 of file namespace.c.
References AcceptInvalidationMessages(), callback(), RangeVar::catalogname, ConditionalLockRelationOid(), ereport, errcode(), errmsg(), ERROR, get_database_name(), get_relname_relid(), LockRelationOid(), LookupExplicitNamespace(), MyDatabaseId, myTempNamespace, NoLock, OidIsValid, RangeVar::relname, RelnameGetRelid(), RangeVar::relpersistence, RELPERSISTENCE_TEMP, RangeVar::schemaname, SharedInvalidMessageCounter, and UnlockRelationOid().
Referenced by AlterTableLookupRelation(), AlterTableNamespace(), cluster(), ExecRefreshMatView(), LockTableCommand(), ReindexIndex(), ReindexTable(), RemoveRelations(), renameatt(), RenameConstraint(), RenameRelation(), RenameRewriteRule(), and renametrig().
{
uint64 inval_count;
Oid relId;
Oid oldRelId = InvalidOid;
bool retry = false;
/*
* We check the catalog name and then ignore it.
*/
if (relation->catalogname)
{
if (strcmp(relation->catalogname, get_database_name(MyDatabaseId)) != 0)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cross-database references are not implemented: \"%s.%s.%s\"",
relation->catalogname, relation->schemaname,
relation->relname)));
}
/*
* DDL operations can change the results of a name lookup. Since all such
* operations will generate invalidation messages, we keep track of
* whether any such messages show up while we're performing the operation,
* and retry until either (1) no more invalidation messages show up or (2)
* the answer doesn't change.
*
* But if lockmode = NoLock, then we assume that either the caller is OK
* with the answer changing under them, or that they already hold some
* appropriate lock, and therefore return the first answer we get without
* checking for invalidation messages. Also, if the requested lock is
* already held, no LockRelationOid will not AcceptInvalidationMessages,
* so we may fail to notice a change. We could protect against that case
* by calling AcceptInvalidationMessages() before beginning this loop, but
* that would add a significant amount overhead, so for now we don't.
*/
for (;;)
{
/*
* Remember this value, so that, after looking up the relation name
* and locking its OID, we can check whether any invalidation messages
* have been processed that might require a do-over.
*/
inval_count = SharedInvalidMessageCounter;
/*
* Some non-default relpersistence value may have been specified. The
* parser never generates such a RangeVar in simple DML, but it can
* happen in contexts such as "CREATE TEMP TABLE foo (f1 int PRIMARY
* KEY)". Such a command will generate an added CREATE INDEX
* operation, which must be careful to find the temp table, even when
* pg_temp is not first in the search path.
*/
if (relation->relpersistence == RELPERSISTENCE_TEMP)
{
if (!OidIsValid(myTempNamespace))
relId = InvalidOid; /* this probably can't happen? */
else
{
if (relation->schemaname)
{
Oid namespaceId;
namespaceId = LookupExplicitNamespace(relation->schemaname, missing_ok);
/*
* For missing_ok, allow a non-existant schema name to
* return InvalidOid.
*/
if (namespaceId != myTempNamespace)
ereport(ERROR,
(errcode(ERRCODE_INVALID_TABLE_DEFINITION),
errmsg("temporary tables cannot specify a schema name")));
}
relId = get_relname_relid(relation->relname, myTempNamespace);
}
}
else if (relation->schemaname)
{
Oid namespaceId;
/* use exact schema given */
namespaceId = LookupExplicitNamespace(relation->schemaname, missing_ok);
if (missing_ok && !OidIsValid(namespaceId))
relId = InvalidOid;
else
relId = get_relname_relid(relation->relname, namespaceId);
}
else
{
/* search the namespace path */
relId = RelnameGetRelid(relation->relname);
}
/*
* Invoke caller-supplied callback, if any.
*
* This callback is a good place to check permissions: we haven't
* taken the table lock yet (and it's really best to check permissions
* before locking anything!), but we've gotten far enough to know what
* OID we think we should lock. Of course, concurrent DDL might
* change things while we're waiting for the lock, but in that case
* the callback will be invoked again for the new OID.
*/
if (callback)
callback(relation, relId, oldRelId, callback_arg);
/*
* If no lock requested, we assume the caller knows what they're
* doing. They should have already acquired a heavyweight lock on
* this relation earlier in the processing of this same statement, so
* it wouldn't be appropriate to AcceptInvalidationMessages() here, as
* that might pull the rug out from under them.
*/
if (lockmode == NoLock)
break;
/*
* If, upon retry, we get back the same OID we did last time, then the
* invalidation messages we processed did not change the final answer.
* So we're done.
*
* If we got a different OID, we've locked the relation that used to
* have this name rather than the one that does now. So release the
* lock.
*/
if (retry)
{
if (relId == oldRelId)
break;
if (OidIsValid(oldRelId))
UnlockRelationOid(oldRelId, lockmode);
}
/*
* Lock relation. This will also accept any pending invalidation
* messages. If we got back InvalidOid, indicating not found, then
* there's nothing to lock, but we accept invalidation messages
* anyway, to flush any negative catcache entries that may be
* lingering.
*/
if (!OidIsValid(relId))
AcceptInvalidationMessages();
else if (!nowait)
LockRelationOid(relId, lockmode);
else if (!ConditionalLockRelationOid(relId, lockmode))
{
if (relation->schemaname)
ereport(ERROR,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("could not obtain lock on relation \"%s.%s\"",
relation->schemaname, relation->relname)));
else
ereport(ERROR,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("could not obtain lock on relation \"%s\"",
relation->relname)));
}
/*
* If no invalidation message were processed, we're done!
*/
if (inval_count == SharedInvalidMessageCounter)
break;
/*
* Something may have changed. Let's repeat the name lookup, to make
* sure this name still references the same relation it did
* previously.
*/
retry = true;
oldRelId = relId;
}
if (!OidIsValid(relId) && !missing_ok)
{
if (relation->schemaname)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_TABLE),
errmsg("relation \"%s.%s\" does not exist",
relation->schemaname, relation->relname)));
else
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_TABLE),
errmsg("relation \"%s\" does not exist",
relation->relname)));
}
return relId;
}
Definition at line 693 of file namespace.c.
References elog, ERROR, get_relname_relid(), GETSTRUCT, HeapTupleIsValid, lfirst_oid, list_member_oid(), NameStr, ObjectIdGetDatum, OidIsValid, PG_CATALOG_NAMESPACE, recomputeNamespacePath(), ReleaseSysCache(), RELOID, and SearchSysCache1.
Referenced by generate_relation_name(), getRelationDescription(), pg_table_is_visible(), and regclassout().
{
HeapTuple reltup;
Form_pg_class relform;
Oid relnamespace;
bool visible;
reltup = SearchSysCache1(RELOID, ObjectIdGetDatum(relid));
if (!HeapTupleIsValid(reltup))
elog(ERROR, "cache lookup failed for relation %u", relid);
relform = (Form_pg_class) GETSTRUCT(reltup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
relnamespace = relform->relnamespace;
if (relnamespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, relnamespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another relation of the same name earlier in the path. So
* we must do a slow check for conflicting relations.
*/
char *relname = NameStr(relform->relname);
ListCell *l;
visible = false;
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == relnamespace)
{
/* Found it first in path */
visible = true;
break;
}
if (OidIsValid(get_relname_relid(relname, namespaceId)))
{
/* Found something else first in path */
break;
}
}
}
ReleaseSysCache(reltup);
return visible;
}
| Oid RelnameGetRelid | ( | const char * | relname | ) |
Definition at line 665 of file namespace.c.
References get_relname_relid(), lfirst_oid, OidIsValid, and recomputeNamespacePath().
Referenced by plpgsql_parse_cwordtype(), plpgsql_parse_wordrowtype(), and RangeVarGetRelidExtended().
{
Oid relid;
ListCell *l;
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
relid = get_relname_relid(relname, namespaceId);
if (OidIsValid(relid))
return relid;
}
/* Not found in path */
return InvalidOid;
}
| void ResetTempTableNamespace | ( | void | ) |
Definition at line 3824 of file namespace.c.
References myTempNamespace, OidIsValid, and RemoveTempRelations().
Referenced by DiscardAll(), and DiscardCommand().
{
if (OidIsValid(myTempNamespace))
RemoveTempRelations(myTempNamespace);
}
Definition at line 2527 of file namespace.c.
References elog, ERROR, GETSTRUCT, HeapTupleIsValid, lfirst_oid, list_member_oid(), myTempNamespace, name, NameStr, ObjectIdGetDatum, PG_CATALOG_NAMESPACE, PointerGetDatum, recomputeNamespacePath(), ReleaseSysCache(), SearchSysCache1, SearchSysCacheExists2, TSCONFIGNAMENSP, and TSCONFIGOID.
Referenced by pg_ts_config_is_visible(), and regconfigout().
{
HeapTuple tup;
Form_pg_ts_config form;
Oid namespace;
bool visible;
tup = SearchSysCache1(TSCONFIGOID, ObjectIdGetDatum(cfgid));
if (!HeapTupleIsValid(tup))
elog(ERROR, "cache lookup failed for text search configuration %u",
cfgid);
form = (Form_pg_ts_config) GETSTRUCT(tup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
namespace = form->cfgnamespace;
if (namespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, namespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another configuration of the same name earlier in the
* path. So we must do a slow check for conflicting configurations.
*/
char *name = NameStr(form->cfgname);
ListCell *l;
visible = false;
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
if (namespaceId == namespace)
{
/* Found it first in path */
visible = true;
break;
}
if (SearchSysCacheExists2(TSCONFIGNAMENSP,
PointerGetDatum(name),
ObjectIdGetDatum(namespaceId)))
{
/* Found something else first in path */
break;
}
}
}
ReleaseSysCache(tup);
return visible;
}
Definition at line 2274 of file namespace.c.
References elog, ERROR, GETSTRUCT, HeapTupleIsValid, lfirst_oid, list_member_oid(), myTempNamespace, name, NameStr, ObjectIdGetDatum, PG_CATALOG_NAMESPACE, PointerGetDatum, recomputeNamespacePath(), ReleaseSysCache(), SearchSysCache1, SearchSysCacheExists2, TSDICTNAMENSP, and TSDICTOID.
Referenced by pg_ts_dict_is_visible(), and regdictionaryout().
{
HeapTuple tup;
Form_pg_ts_dict form;
Oid namespace;
bool visible;
tup = SearchSysCache1(TSDICTOID, ObjectIdGetDatum(dictId));
if (!HeapTupleIsValid(tup))
elog(ERROR, "cache lookup failed for text search dictionary %u",
dictId);
form = (Form_pg_ts_dict) GETSTRUCT(tup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
namespace = form->dictnamespace;
if (namespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, namespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another dictionary of the same name earlier in the path.
* So we must do a slow check for conflicting dictionaries.
*/
char *name = NameStr(form->dictname);
ListCell *l;
visible = false;
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
if (namespaceId == namespace)
{
/* Found it first in path */
visible = true;
break;
}
if (SearchSysCacheExists2(TSDICTNAMENSP,
PointerGetDatum(name),
ObjectIdGetDatum(namespaceId)))
{
/* Found something else first in path */
break;
}
}
}
ReleaseSysCache(tup);
return visible;
}
Definition at line 2148 of file namespace.c.
References elog, ERROR, GETSTRUCT, HeapTupleIsValid, lfirst_oid, list_member_oid(), myTempNamespace, name, NameStr, ObjectIdGetDatum, PG_CATALOG_NAMESPACE, PointerGetDatum, recomputeNamespacePath(), ReleaseSysCache(), SearchSysCache1, SearchSysCacheExists2, TSPARSERNAMENSP, and TSPARSEROID.
Referenced by pg_ts_parser_is_visible().
{
HeapTuple tup;
Form_pg_ts_parser form;
Oid namespace;
bool visible;
tup = SearchSysCache1(TSPARSEROID, ObjectIdGetDatum(prsId));
if (!HeapTupleIsValid(tup))
elog(ERROR, "cache lookup failed for text search parser %u", prsId);
form = (Form_pg_ts_parser) GETSTRUCT(tup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
namespace = form->prsnamespace;
if (namespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, namespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another parser of the same name earlier in the path. So
* we must do a slow check for conflicting parsers.
*/
char *name = NameStr(form->prsname);
ListCell *l;
visible = false;
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
if (namespaceId == namespace)
{
/* Found it first in path */
visible = true;
break;
}
if (SearchSysCacheExists2(TSPARSERNAMENSP,
PointerGetDatum(name),
ObjectIdGetDatum(namespaceId)))
{
/* Found something else first in path */
break;
}
}
}
ReleaseSysCache(tup);
return visible;
}
Definition at line 2401 of file namespace.c.
References elog, ERROR, GETSTRUCT, HeapTupleIsValid, lfirst_oid, list_member_oid(), myTempNamespace, name, NameStr, ObjectIdGetDatum, PG_CATALOG_NAMESPACE, PointerGetDatum, recomputeNamespacePath(), ReleaseSysCache(), SearchSysCache1, SearchSysCacheExists2, TSTEMPLATENAMENSP, and TSTEMPLATEOID.
Referenced by pg_ts_template_is_visible().
{
HeapTuple tup;
Form_pg_ts_template form;
Oid namespace;
bool visible;
tup = SearchSysCache1(TSTEMPLATEOID, ObjectIdGetDatum(tmplId));
if (!HeapTupleIsValid(tup))
elog(ERROR, "cache lookup failed for text search template %u", tmplId);
form = (Form_pg_ts_template) GETSTRUCT(tup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
namespace = form->tmplnamespace;
if (namespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, namespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another template of the same name earlier in the path. So
* we must do a slow check for conflicting templates.
*/
char *name = NameStr(form->tmplname);
ListCell *l;
visible = false;
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == myTempNamespace)
continue; /* do not look in temp namespace */
if (namespaceId == namespace)
{
/* Found it first in path */
visible = true;
break;
}
if (SearchSysCacheExists2(TSTEMPLATENAMENSP,
PointerGetDatum(name),
ObjectIdGetDatum(namespaceId)))
{
/* Found something else first in path */
break;
}
}
}
ReleaseSysCache(tup);
return visible;
}
Definition at line 788 of file namespace.c.
References elog, ERROR, GETSTRUCT, HeapTupleIsValid, lfirst_oid, list_member_oid(), NameStr, ObjectIdGetDatum, PG_CATALOG_NAMESPACE, PointerGetDatum, recomputeNamespacePath(), ReleaseSysCache(), SearchSysCache1, SearchSysCacheExists2, TYPENAMENSP, and TYPEOID.
Referenced by format_type_internal(), and pg_type_is_visible().
{
HeapTuple typtup;
Form_pg_type typform;
Oid typnamespace;
bool visible;
typtup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typid));
if (!HeapTupleIsValid(typtup))
elog(ERROR, "cache lookup failed for type %u", typid);
typform = (Form_pg_type) GETSTRUCT(typtup);
recomputeNamespacePath();
/*
* Quick check: if it ain't in the path at all, it ain't visible. Items in
* the system namespace are surely in the path and so we needn't even do
* list_member_oid() for them.
*/
typnamespace = typform->typnamespace;
if (typnamespace != PG_CATALOG_NAMESPACE &&
!list_member_oid(activeSearchPath, typnamespace))
visible = false;
else
{
/*
* If it is in the path, it might still not be visible; it could be
* hidden by another type of the same name earlier in the path. So we
* must do a slow check for conflicting types.
*/
char *typname = NameStr(typform->typname);
ListCell *l;
visible = false;
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
if (namespaceId == typnamespace)
{
/* Found it first in path */
visible = true;
break;
}
if (SearchSysCacheExists2(TYPENAMENSP,
PointerGetDatum(typname),
ObjectIdGetDatum(namespaceId)))
{
/* Found something else first in path */
break;
}
}
}
ReleaseSysCache(typtup);
return visible;
}
| Oid TypenameGetTypid | ( | const char * | typname | ) |
Definition at line 759 of file namespace.c.
References GetSysCacheOid2, lfirst_oid, ObjectIdGetDatum, OidIsValid, PointerGetDatum, recomputeNamespacePath(), and TYPENAMENSP.
Referenced by LookupTypeName().
{
Oid typid;
ListCell *l;
recomputeNamespacePath();
foreach(l, activeSearchPath)
{
Oid namespaceId = lfirst_oid(l);
typid = GetSysCacheOid2(TYPENAMENSP,
PointerGetDatum(typname),
ObjectIdGetDatum(namespaceId));
if (OidIsValid(typid))
return typid;
}
/* Not found in path */
return InvalidOid;
}
| char* namespace_search_path |
Definition at line 187 of file namespace.c.
Referenced by recomputeNamespacePath().
1.7.1