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namespace.h File Reference
#include "nodes/primnodes.h"
#include "storage/lock.h"
Include dependency graph for namespace.h:
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Data Structures

struct  _FuncCandidateList
 
struct  OverrideSearchPath
 

Macros

#define RangeVarGetRelid(relation, lockmode, missing_ok)   RangeVarGetRelidExtended(relation, lockmode, missing_ok, false, NULL, NULL)
 

Typedefs

typedef struct _FuncCandidateListFuncCandidateList
 
typedef struct OverrideSearchPath OverrideSearchPath
 
typedef void(* RangeVarGetRelidCallback )(const RangeVar *relation, Oid relId, Oid oldRelId, void *callback_arg)
 

Functions

Oid RangeVarGetRelidExtended (const RangeVar *relation, LOCKMODE lockmode, bool missing_ok, bool nowait, RangeVarGetRelidCallback callback, void *callback_arg)
 
Oid RangeVarGetCreationNamespace (const RangeVar *newRelation)
 
Oid RangeVarGetAndCheckCreationNamespace (RangeVar *newRelation, LOCKMODE lockmode, Oid *existing_relation_id)
 
void RangeVarAdjustRelationPersistence (RangeVar *newRelation, Oid nspid)
 
Oid RelnameGetRelid (const char *relname)
 
bool RelationIsVisible (Oid relid)
 
Oid TypenameGetTypid (const char *typname)
 
bool TypeIsVisible (Oid typid)
 
FuncCandidateList FuncnameGetCandidates (List *names, int nargs, List *argnames, bool expand_variadic, bool expand_defaults, bool missing_ok)
 
bool FunctionIsVisible (Oid funcid)
 
Oid OpernameGetOprid (List *names, Oid oprleft, Oid oprright)
 
FuncCandidateList OpernameGetCandidates (List *names, char oprkind, bool missing_schema_ok)
 
bool OperatorIsVisible (Oid oprid)
 
Oid OpclassnameGetOpcid (Oid amid, const char *opcname)
 
bool OpclassIsVisible (Oid opcid)
 
Oid OpfamilynameGetOpfid (Oid amid, const char *opfname)
 
bool OpfamilyIsVisible (Oid opfid)
 
Oid CollationGetCollid (const char *collname)
 
bool CollationIsVisible (Oid collid)
 
Oid ConversionGetConid (const char *conname)
 
bool ConversionIsVisible (Oid conid)
 
Oid get_ts_parser_oid (List *names, bool missing_ok)
 
bool TSParserIsVisible (Oid prsId)
 
Oid get_ts_dict_oid (List *names, bool missing_ok)
 
bool TSDictionaryIsVisible (Oid dictId)
 
Oid get_ts_template_oid (List *names, bool missing_ok)
 
bool TSTemplateIsVisible (Oid tmplId)
 
Oid get_ts_config_oid (List *names, bool missing_ok)
 
bool TSConfigIsVisible (Oid cfgid)
 
void DeconstructQualifiedName (List *names, char **nspname_p, char **objname_p)
 
Oid LookupNamespaceNoError (const char *nspname)
 
Oid LookupExplicitNamespace (const char *nspname, bool missing_ok)
 
Oid get_namespace_oid (const char *nspname, bool missing_ok)
 
Oid LookupCreationNamespace (const char *nspname)
 
void CheckSetNamespace (Oid oldNspOid, Oid nspOid)
 
Oid QualifiedNameGetCreationNamespace (List *names, char **objname_p)
 
RangeVarmakeRangeVarFromNameList (List *names)
 
char * NameListToString (List *names)
 
char * NameListToQuotedString (List *names)
 
bool isTempNamespace (Oid namespaceId)
 
bool isTempToastNamespace (Oid namespaceId)
 
bool isTempOrTempToastNamespace (Oid namespaceId)
 
bool isAnyTempNamespace (Oid namespaceId)
 
bool isOtherTempNamespace (Oid namespaceId)
 
int GetTempNamespaceBackendId (Oid namespaceId)
 
Oid GetTempToastNamespace (void)
 
void GetTempNamespaceState (Oid *tempNamespaceId, Oid *tempToastNamespaceId)
 
void SetTempNamespaceState (Oid tempNamespaceId, Oid tempToastNamespaceId)
 
void ResetTempTableNamespace (void)
 
OverrideSearchPathGetOverrideSearchPath (MemoryContext context)
 
OverrideSearchPathCopyOverrideSearchPath (OverrideSearchPath *path)
 
bool OverrideSearchPathMatchesCurrent (OverrideSearchPath *path)
 
void PushOverrideSearchPath (OverrideSearchPath *newpath)
 
void PopOverrideSearchPath (void)
 
Oid get_collation_oid (List *collname, bool missing_ok)
 
Oid get_conversion_oid (List *conname, bool missing_ok)
 
Oid FindDefaultConversionProc (int32 for_encoding, int32 to_encoding)
 
Oid get_statistics_oid (List *names, bool missing_ok)
 
void InitializeSearchPath (void)
 
void AtEOXact_Namespace (bool isCommit, bool parallel)
 
void AtEOSubXact_Namespace (bool isCommit, SubTransactionId mySubid, SubTransactionId parentSubid)
 
Listfetch_search_path (bool includeImplicit)
 
int fetch_search_path_array (Oid *sarray, int sarray_len)
 

Variables

char * namespace_search_path
 

Macro Definition Documentation

Typedef Documentation

typedef void(* RangeVarGetRelidCallback)(const RangeVar *relation, Oid relId, Oid oldRelId, void *callback_arg)

Definition at line 50 of file namespace.h.

Function Documentation

void AtEOSubXact_Namespace ( bool  isCommit,
SubTransactionId  mySubid,
SubTransactionId  parentSubid 
)

Definition at line 3849 of file namespace.c.

References activeCreationNamespace, activeTempCreationPending, baseCreationNamespace, baseSearchPath, baseSearchPathValid, baseTempCreationPending, OverrideStackEntry::creationNamespace, elog, GetCurrentTransactionNestLevel(), InvalidOid, InvalidSubTransactionId, linitial, list_delete_first(), list_free(), myTempNamespace, myTempNamespaceSubID, myTempToastNamespace, OverrideStackEntry::nestLevel, pfree(), OverrideStackEntry::searchPath, and WARNING.

Referenced by AbortSubTransaction(), and CommitSubTransaction().

3851 {
3852  OverrideStackEntry *entry;
3853 
3854  if (myTempNamespaceSubID == mySubid)
3855  {
3856  if (isCommit)
3857  myTempNamespaceSubID = parentSubid;
3858  else
3859  {
3861  /* TEMP namespace creation failed, so reset state */
3864  baseSearchPathValid = false; /* need to rebuild list */
3865  }
3866  }
3867 
3868  /*
3869  * Clean up if someone failed to do PopOverrideSearchPath
3870  */
3871  while (overrideStack)
3872  {
3875  break;
3876  if (isCommit)
3877  elog(WARNING, "leaked override search path");
3879  list_free(entry->searchPath);
3880  pfree(entry);
3881  }
3882 
3883  /* Activate the next level down. */
3884  if (overrideStack)
3885  {
3887  activeSearchPath = entry->searchPath;
3889  activeTempCreationPending = false; /* XXX is this OK? */
3890  }
3891  else
3892  {
3893  /* If not baseSearchPathValid, this is useless but harmless */
3897  }
3898 }
static bool baseSearchPathValid
Definition: namespace.c:152
static Oid myTempToastNamespace
Definition: namespace.c:182
static Oid myTempNamespace
Definition: namespace.c:180
static List * overrideStack
Definition: namespace.c:163
static Oid activeCreationNamespace
Definition: namespace.c:136
void pfree(void *pointer)
Definition: mcxt.c:950
#define linitial(l)
Definition: pg_list.h:110
static bool baseTempCreationPending
Definition: namespace.c:147
static SubTransactionId myTempNamespaceSubID
Definition: namespace.c:184
static bool activeTempCreationPending
Definition: namespace.c:139
static Oid baseCreationNamespace
Definition: namespace.c:145
#define WARNING
Definition: elog.h:40
static List * baseSearchPath
Definition: namespace.c:143
#define InvalidOid
Definition: postgres_ext.h:36
int GetCurrentTransactionNestLevel(void)
Definition: xact.c:761
#define InvalidSubTransactionId
Definition: c.h:403
static List * activeSearchPath
Definition: namespace.c:133
void list_free(List *list)
Definition: list.c:1133
#define elog
Definition: elog.h:219
List * list_delete_first(List *list)
Definition: list.c:666
void AtEOXact_Namespace ( bool  isCommit,
bool  parallel 
)

Definition at line 3794 of file namespace.c.

References activeCreationNamespace, activeTempCreationPending, baseCreationNamespace, baseSearchPath, baseSearchPathValid, baseTempCreationPending, before_shmem_exit(), elog, InvalidOid, InvalidSubTransactionId, linitial, list_delete_first(), list_free(), myTempNamespace, myTempNamespaceSubID, myTempToastNamespace, pfree(), RemoveTempRelationsCallback(), OverrideStackEntry::searchPath, and WARNING.

Referenced by AbortTransaction(), CommitTransaction(), and PrepareTransaction().

3795 {
3796  /*
3797  * If we abort the transaction in which a temp namespace was selected,
3798  * we'll have to do any creation or cleanout work over again. So, just
3799  * forget the namespace entirely until next time. On the other hand, if
3800  * we commit then register an exit callback to clean out the temp tables
3801  * at backend shutdown. (We only want to register the callback once per
3802  * session, so this is a good place to do it.)
3803  */
3804  if (myTempNamespaceSubID != InvalidSubTransactionId && !parallel)
3805  {
3806  if (isCommit)
3808  else
3809  {
3812  baseSearchPathValid = false; /* need to rebuild list */
3813  }
3815  }
3816 
3817  /*
3818  * Clean up if someone failed to do PopOverrideSearchPath
3819  */
3820  if (overrideStack)
3821  {
3822  if (isCommit)
3823  elog(WARNING, "leaked override search path");
3824  while (overrideStack)
3825  {
3826  OverrideStackEntry *entry;
3827 
3830  list_free(entry->searchPath);
3831  pfree(entry);
3832  }
3833  /* If not baseSearchPathValid, this is useless but harmless */
3837  }
3838 }
static bool baseSearchPathValid
Definition: namespace.c:152
static Oid myTempToastNamespace
Definition: namespace.c:182
static Oid myTempNamespace
Definition: namespace.c:180
static List * overrideStack
Definition: namespace.c:163
static Oid activeCreationNamespace
Definition: namespace.c:136
void pfree(void *pointer)
Definition: mcxt.c:950
#define linitial(l)
Definition: pg_list.h:110
static bool baseTempCreationPending
Definition: namespace.c:147
void before_shmem_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:320
static SubTransactionId myTempNamespaceSubID
Definition: namespace.c:184
static bool activeTempCreationPending
Definition: namespace.c:139
static Oid baseCreationNamespace
Definition: namespace.c:145
#define WARNING
Definition: elog.h:40
static List * baseSearchPath
Definition: namespace.c:143
#define InvalidOid
Definition: postgres_ext.h:36
#define InvalidSubTransactionId
Definition: c.h:403
static List * activeSearchPath
Definition: namespace.c:133
void list_free(List *list)
Definition: list.c:1133
#define elog
Definition: elog.h:219
static void RemoveTempRelationsCallback(int code, Datum arg)
Definition: namespace.c:3935
List * list_delete_first(List *list)
Definition: list.c:666
void CheckSetNamespace ( Oid  oldNspOid,
Oid  nspOid 
)

Definition at line 2818 of file namespace.c.

References ereport, errcode(), errmsg(), ERROR, isAnyTempNamespace(), and PG_TOAST_NAMESPACE.

Referenced by AlterObjectNamespace_internal(), AlterTableNamespace(), and AlterTypeNamespaceInternal().

2819 {
2820  /* disallow renaming into or out of temp schemas */
2821  if (isAnyTempNamespace(nspOid) || isAnyTempNamespace(oldNspOid))
2822  ereport(ERROR,
2823  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2824  errmsg("cannot move objects into or out of temporary schemas")));
2825 
2826  /* same for TOAST schema */
2827  if (nspOid == PG_TOAST_NAMESPACE || oldNspOid == PG_TOAST_NAMESPACE)
2828  ereport(ERROR,
2829  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2830  errmsg("cannot move objects into or out of TOAST schema")));
2831 }
int errcode(int sqlerrcode)
Definition: elog.c:575
#define PG_TOAST_NAMESPACE
Definition: pg_namespace.h:74
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
int errmsg(const char *fmt,...)
Definition: elog.c:797
bool isAnyTempNamespace(Oid namespaceId)
Definition: namespace.c:3046
Oid CollationGetCollid ( const char *  collname)

Definition at line 1922 of file namespace.c.

References COLLNAMEENCNSP, GetDatabaseEncoding(), GetSysCacheOid3, Int32GetDatum, InvalidOid, lfirst_oid, myTempNamespace, ObjectIdGetDatum, OidIsValid, PointerGetDatum, and recomputeNamespacePath().

Referenced by CollationIsVisible().

1923 {
1924  int32 dbencoding = GetDatabaseEncoding();
1925  ListCell *l;
1926 
1928 
1929  foreach(l, activeSearchPath)
1930  {
1931  Oid namespaceId = lfirst_oid(l);
1932  Oid collid;
1933 
1934  if (namespaceId == myTempNamespace)
1935  continue; /* do not look in temp namespace */
1936 
1937  /* Check for database-encoding-specific entry */
1939  PointerGetDatum(collname),
1940  Int32GetDatum(dbencoding),
1941  ObjectIdGetDatum(namespaceId));
1942  if (OidIsValid(collid))
1943  return collid;
1944 
1945  /* Check for any-encoding entry */
1947  PointerGetDatum(collname),
1948  Int32GetDatum(-1),
1949  ObjectIdGetDatum(namespaceId));
1950  if (OidIsValid(collid))
1951  return collid;
1952  }
1953 
1954  /* Not found in path */
1955  return InvalidOid;
1956 }
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid3(cacheId, key1, key2, key3)
Definition: syscache.h:183
signed int int32
Definition: c.h:256
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
int GetDatabaseEncoding(void)
Definition: mbutils.c:1015
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
#define Int32GetDatum(X)
Definition: postgres.h:485
#define lfirst_oid(lc)
Definition: pg_list.h:108
bool CollationIsVisible ( Oid  collid)

Definition at line 1965 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().

1966 {
1967  HeapTuple colltup;
1968  Form_pg_collation collform;
1969  Oid collnamespace;
1970  bool visible;
1971 
1972  colltup = SearchSysCache1(COLLOID, ObjectIdGetDatum(collid));
1973  if (!HeapTupleIsValid(colltup))
1974  elog(ERROR, "cache lookup failed for collation %u", collid);
1975  collform = (Form_pg_collation) GETSTRUCT(colltup);
1976 
1978 
1979  /*
1980  * Quick check: if it ain't in the path at all, it ain't visible. Items in
1981  * the system namespace are surely in the path and so we needn't even do
1982  * list_member_oid() for them.
1983  */
1984  collnamespace = collform->collnamespace;
1985  if (collnamespace != PG_CATALOG_NAMESPACE &&
1986  !list_member_oid(activeSearchPath, collnamespace))
1987  visible = false;
1988  else
1989  {
1990  /*
1991  * If it is in the path, it might still not be visible; it could be
1992  * hidden by another conversion of the same name earlier in the path.
1993  * So we must do a slow check to see if this conversion would be found
1994  * by CollationGetCollid.
1995  */
1996  char *collname = NameStr(collform->collname);
1997 
1998  visible = (CollationGetCollid(collname) == collid);
1999  }
2000 
2001  ReleaseSysCache(colltup);
2002 
2003  return visible;
2004 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
Oid CollationGetCollid(const char *collname)
Definition: namespace.c:1922
unsigned int Oid
Definition: postgres_ext.h:31
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
FormData_pg_collation * Form_pg_collation
Definition: pg_collation.h:51
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
Oid ConversionGetConid ( const char *  conname)

Definition at line 2015 of file namespace.c.

References CONNAMENSP, GetSysCacheOid2, InvalidOid, lfirst_oid, myTempNamespace, ObjectIdGetDatum, OidIsValid, PointerGetDatum, and recomputeNamespacePath().

Referenced by ConversionIsVisible().

2016 {
2017  Oid conid;
2018  ListCell *l;
2019 
2021 
2022  foreach(l, activeSearchPath)
2023  {
2024  Oid namespaceId = lfirst_oid(l);
2025 
2026  if (namespaceId == myTempNamespace)
2027  continue; /* do not look in temp namespace */
2028 
2029  conid = GetSysCacheOid2(CONNAMENSP,
2030  PointerGetDatum(conname),
2031  ObjectIdGetDatum(namespaceId));
2032  if (OidIsValid(conid))
2033  return conid;
2034  }
2035 
2036  /* Not found in path */
2037  return InvalidOid;
2038 }
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid2(cacheId, key1, key2)
Definition: syscache.h:181
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
#define lfirst_oid(lc)
Definition: pg_list.h:108
bool ConversionIsVisible ( Oid  conid)

Definition at line 2047 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().

2048 {
2049  HeapTuple contup;
2050  Form_pg_conversion conform;
2051  Oid connamespace;
2052  bool visible;
2053 
2054  contup = SearchSysCache1(CONVOID, ObjectIdGetDatum(conid));
2055  if (!HeapTupleIsValid(contup))
2056  elog(ERROR, "cache lookup failed for conversion %u", conid);
2057  conform = (Form_pg_conversion) GETSTRUCT(contup);
2058 
2060 
2061  /*
2062  * Quick check: if it ain't in the path at all, it ain't visible. Items in
2063  * the system namespace are surely in the path and so we needn't even do
2064  * list_member_oid() for them.
2065  */
2066  connamespace = conform->connamespace;
2067  if (connamespace != PG_CATALOG_NAMESPACE &&
2068  !list_member_oid(activeSearchPath, connamespace))
2069  visible = false;
2070  else
2071  {
2072  /*
2073  * If it is in the path, it might still not be visible; it could be
2074  * hidden by another conversion of the same name earlier in the path.
2075  * So we must do a slow check to see if this conversion would be found
2076  * by ConversionGetConid.
2077  */
2078  char *conname = NameStr(conform->conname);
2079 
2080  visible = (ConversionGetConid(conname) == conid);
2081  }
2082 
2083  ReleaseSysCache(contup);
2084 
2085  return visible;
2086 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
unsigned int Oid
Definition: postgres_ext.h:31
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
Oid ConversionGetConid(const char *conname)
Definition: namespace.c:2015
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
FormData_pg_conversion * Form_pg_conversion
Definition: pg_conversion.h:56
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
OverrideSearchPath* CopyOverrideSearchPath ( OverrideSearchPath path)

Definition at line 3207 of file namespace.c.

References OverrideSearchPath::addCatalog, OverrideSearchPath::addTemp, list_copy(), palloc(), result, and OverrideSearchPath::schemas.

Referenced by CopyCachedPlan().

3208 {
3210 
3211  result = (OverrideSearchPath *) palloc(sizeof(OverrideSearchPath));
3212  result->schemas = list_copy(path->schemas);
3213  result->addCatalog = path->addCatalog;
3214  result->addTemp = path->addTemp;
3215 
3216  return result;
3217 }
List * list_copy(const List *oldlist)
Definition: list.c:1160
return result
Definition: formatting.c:1618
void * palloc(Size size)
Definition: mcxt.c:849
void DeconstructQualifiedName ( List names,
char **  nspname_p,
char **  objname_p 
)

Definition at line 2659 of file namespace.c.

References ereport, errcode(), errmsg(), ERROR, get_database_name(), linitial, list_length(), lsecond, lthird, MyDatabaseId, NameListToString(), NULL, and strVal.

Referenced by FuncnameGetCandidates(), get_collation_oid(), get_conversion_oid(), get_statistics_oid(), get_ts_config_oid(), get_ts_dict_oid(), get_ts_parser_oid(), get_ts_template_oid(), LookupTypeName(), make_oper_cache_key(), OpClassCacheLookup(), OpernameGetCandidates(), OpernameGetOprid(), OpFamilyCacheLookup(), QualifiedNameGetCreationNamespace(), and ResolveOpClass().

2662 {
2663  char *catalogname;
2664  char *schemaname = NULL;
2665  char *objname = NULL;
2666 
2667  switch (list_length(names))
2668  {
2669  case 1:
2670  objname = strVal(linitial(names));
2671  break;
2672  case 2:
2673  schemaname = strVal(linitial(names));
2674  objname = strVal(lsecond(names));
2675  break;
2676  case 3:
2677  catalogname = strVal(linitial(names));
2678  schemaname = strVal(lsecond(names));
2679  objname = strVal(lthird(names));
2680 
2681  /*
2682  * We check the catalog name and then ignore it.
2683  */
2684  if (strcmp(catalogname, get_database_name(MyDatabaseId)) != 0)
2685  ereport(ERROR,
2686  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2687  errmsg("cross-database references are not implemented: %s",
2688  NameListToString(names))));
2689  break;
2690  default:
2691  ereport(ERROR,
2692  (errcode(ERRCODE_SYNTAX_ERROR),
2693  errmsg("improper qualified name (too many dotted names): %s",
2694  NameListToString(names))));
2695  break;
2696  }
2697 
2698  *nspname_p = schemaname;
2699  *objname_p = objname;
2700 }
#define strVal(v)
Definition: value.h:54
int errcode(int sqlerrcode)
Definition: elog.c:575
#define lsecond(l)
Definition: pg_list.h:114
#define linitial(l)
Definition: pg_list.h:110
#define ERROR
Definition: elog.h:43
char * get_database_name(Oid dbid)
Definition: dbcommands.c:2056
#define ereport(elevel, rest)
Definition: elog.h:122
char * NameListToString(List *names)
Definition: namespace.c:2953
Oid MyDatabaseId
Definition: globals.c:76
#define NULL
Definition: c.h:229
static int list_length(const List *l)
Definition: pg_list.h:89
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define lthird(l)
Definition: pg_list.h:118
List* fetch_search_path ( bool  includeImplicit)

Definition at line 4074 of file namespace.c.

References activeCreationNamespace, activeTempCreationPending, InitTempTableNamespace(), linitial_oid, list_copy(), list_delete_first(), recomputeNamespacePath(), and result.

Referenced by AfterTriggerSetState(), CreateExtensionInternal(), current_schema(), and current_schemas().

4075 {
4076  List *result;
4077 
4079 
4080  /*
4081  * If the temp namespace should be first, force it to exist. This is so
4082  * that callers can trust the result to reflect the actual default
4083  * creation namespace. It's a bit bogus to do this here, since
4084  * current_schema() is supposedly a stable function without side-effects,
4085  * but the alternatives seem worse.
4086  */
4088  {
4091  }
4092 
4093  result = list_copy(activeSearchPath);
4094  if (!includeImplicit)
4095  {
4096  while (result && linitial_oid(result) != activeCreationNamespace)
4097  result = list_delete_first(result);
4098  }
4099 
4100  return result;
4101 }
List * list_copy(const List *oldlist)
Definition: list.c:1160
return result
Definition: formatting.c:1618
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
static Oid activeCreationNamespace
Definition: namespace.c:136
static bool activeTempCreationPending
Definition: namespace.c:139
static void InitTempTableNamespace(void)
Definition: namespace.c:3685
#define linitial_oid(l)
Definition: pg_list.h:112
static List * activeSearchPath
Definition: namespace.c:133
Definition: pg_list.h:45
List * list_delete_first(List *list)
Definition: list.c:666
int fetch_search_path_array ( Oid sarray,
int  sarray_len 
)

Definition at line 4114 of file namespace.c.

References lfirst_oid, myTempNamespace, and recomputeNamespacePath().

Referenced by make_oper_cache_key().

4115 {
4116  int count = 0;
4117  ListCell *l;
4118 
4120 
4121  foreach(l, activeSearchPath)
4122  {
4123  Oid namespaceId = lfirst_oid(l);
4124 
4125  if (namespaceId == myTempNamespace)
4126  continue; /* do not include temp namespace */
4127 
4128  if (count < sarray_len)
4129  sarray[count] = namespaceId;
4130  count++;
4131  }
4132 
4133  return count;
4134 }
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
static List * activeSearchPath
Definition: namespace.c:133
#define lfirst_oid(lc)
Definition: pg_list.h:108
Oid FindDefaultConversionProc ( int32  for_encoding,
int32  to_encoding 
)

Definition at line 3508 of file namespace.c.

References FindDefaultConversion(), InvalidOid, lfirst_oid, myTempNamespace, OidIsValid, and recomputeNamespacePath().

Referenced by pg_do_encoding_conversion(), and PrepareClientEncoding().

3509 {
3510  Oid proc;
3511  ListCell *l;
3512 
3514 
3515  foreach(l, activeSearchPath)
3516  {
3517  Oid namespaceId = lfirst_oid(l);
3518 
3519  if (namespaceId == myTempNamespace)
3520  continue; /* do not look in temp namespace */
3521 
3522  proc = FindDefaultConversion(namespaceId, for_encoding, to_encoding);
3523  if (OidIsValid(proc))
3524  return proc;
3525  }
3526 
3527  /* Not found in path */
3528  return InvalidOid;
3529 }
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
Oid FindDefaultConversion(Oid name_space, int32 for_encoding, int32 to_encoding)
#define lfirst_oid(lc)
Definition: pg_list.h:108
FuncCandidateList FuncnameGetCandidates ( List names,
int  nargs,
List argnames,
bool  expand_variadic,
bool  expand_defaults,
bool  missing_ok 
)

Definition at line 902 of file namespace.c.

References _FuncCandidateList::argnumbers, _FuncCandidateList::args, generate_unaccent_rules::args, Assert, CStringGetDatum, DeconstructQualifiedName(), GETSTRUCT, HeapTupleGetOid, i, InvalidOid, lfirst_oid, LookupExplicitNamespace(), MatchNamedCall(), Max, catclist::members, myTempNamespace, catclist::n_members, _FuncCandidateList::nargs, _FuncCandidateList::ndargs, _FuncCandidateList::next, NIL, NULL, _FuncCandidateList::nvargs, offsetof, _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(), regprocout(), to_regproc(), and to_regprocedure().

905 {
906  FuncCandidateList resultList = NULL;
907  bool any_special = false;
908  char *schemaname;
909  char *funcname;
910  Oid namespaceId;
911  CatCList *catlist;
912  int i;
913 
914  /* check for caller error */
915  Assert(nargs >= 0 || !(expand_variadic | expand_defaults));
916 
917  /* deconstruct the name list */
918  DeconstructQualifiedName(names, &schemaname, &funcname);
919 
920  if (schemaname)
921  {
922  /* use exact schema given */
923  namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
924  if (!OidIsValid(namespaceId))
925  return NULL;
926  }
927  else
928  {
929  /* flag to indicate we need namespace search */
930  namespaceId = InvalidOid;
932  }
933 
934  /* Search syscache by name only */
936 
937  for (i = 0; i < catlist->n_members; i++)
938  {
939  HeapTuple proctup = &catlist->members[i]->tuple;
940  Form_pg_proc procform = (Form_pg_proc) GETSTRUCT(proctup);
941  int pronargs = procform->pronargs;
942  int effective_nargs;
943  int pathpos = 0;
944  bool variadic;
945  bool use_defaults;
946  Oid va_elem_type;
947  int *argnumbers = NULL;
948  FuncCandidateList newResult;
949 
950  if (OidIsValid(namespaceId))
951  {
952  /* Consider only procs in specified namespace */
953  if (procform->pronamespace != namespaceId)
954  continue;
955  }
956  else
957  {
958  /*
959  * Consider only procs that are in the search path and are not in
960  * the temp namespace.
961  */
962  ListCell *nsp;
963 
964  foreach(nsp, activeSearchPath)
965  {
966  if (procform->pronamespace == lfirst_oid(nsp) &&
967  procform->pronamespace != myTempNamespace)
968  break;
969  pathpos++;
970  }
971  if (nsp == NULL)
972  continue; /* proc is not in search path */
973  }
974 
975  if (argnames != NIL)
976  {
977  /*
978  * Call uses named or mixed notation
979  *
980  * Named or mixed notation can match a variadic function only if
981  * expand_variadic is off; otherwise there is no way to match the
982  * presumed-nameless parameters expanded from the variadic array.
983  */
984  if (OidIsValid(procform->provariadic) && expand_variadic)
985  continue;
986  va_elem_type = InvalidOid;
987  variadic = false;
988 
989  /*
990  * Check argument count.
991  */
992  Assert(nargs >= 0); /* -1 not supported with argnames */
993 
994  if (pronargs > nargs && expand_defaults)
995  {
996  /* Ignore if not enough default expressions */
997  if (nargs + procform->pronargdefaults < pronargs)
998  continue;
999  use_defaults = true;
1000  }
1001  else
1002  use_defaults = false;
1003 
1004  /* Ignore if it doesn't match requested argument count */
1005  if (pronargs != nargs && !use_defaults)
1006  continue;
1007 
1008  /* Check for argument name match, generate positional mapping */
1009  if (!MatchNamedCall(proctup, nargs, argnames,
1010  &argnumbers))
1011  continue;
1012 
1013  /* Named argument matching is always "special" */
1014  any_special = true;
1015  }
1016  else
1017  {
1018  /*
1019  * Call uses positional notation
1020  *
1021  * Check if function is variadic, and get variadic element type if
1022  * so. If expand_variadic is false, we should just ignore
1023  * variadic-ness.
1024  */
1025  if (pronargs <= nargs && expand_variadic)
1026  {
1027  va_elem_type = procform->provariadic;
1028  variadic = OidIsValid(va_elem_type);
1029  any_special |= variadic;
1030  }
1031  else
1032  {
1033  va_elem_type = InvalidOid;
1034  variadic = false;
1035  }
1036 
1037  /*
1038  * Check if function can match by using parameter defaults.
1039  */
1040  if (pronargs > nargs && expand_defaults)
1041  {
1042  /* Ignore if not enough default expressions */
1043  if (nargs + procform->pronargdefaults < pronargs)
1044  continue;
1045  use_defaults = true;
1046  any_special = true;
1047  }
1048  else
1049  use_defaults = false;
1050 
1051  /* Ignore if it doesn't match requested argument count */
1052  if (nargs >= 0 && pronargs != nargs && !variadic && !use_defaults)
1053  continue;
1054  }
1055 
1056  /*
1057  * We must compute the effective argument list so that we can easily
1058  * compare it to earlier results. We waste a palloc cycle if it gets
1059  * masked by an earlier result, but really that's a pretty infrequent
1060  * case so it's not worth worrying about.
1061  */
1062  effective_nargs = Max(pronargs, nargs);
1063  newResult = (FuncCandidateList)
1065  effective_nargs * sizeof(Oid));
1066  newResult->pathpos = pathpos;
1067  newResult->oid = HeapTupleGetOid(proctup);
1068  newResult->nargs = effective_nargs;
1069  newResult->argnumbers = argnumbers;
1070  if (argnumbers)
1071  {
1072  /* Re-order the argument types into call's logical order */
1073  Oid *proargtypes = procform->proargtypes.values;
1074  int i;
1075 
1076  for (i = 0; i < pronargs; i++)
1077  newResult->args[i] = proargtypes[argnumbers[i]];
1078  }
1079  else
1080  {
1081  /* Simple positional case, just copy proargtypes as-is */
1082  memcpy(newResult->args, procform->proargtypes.values,
1083  pronargs * sizeof(Oid));
1084  }
1085  if (variadic)
1086  {
1087  int i;
1088 
1089  newResult->nvargs = effective_nargs - pronargs + 1;
1090  /* Expand variadic argument into N copies of element type */
1091  for (i = pronargs - 1; i < effective_nargs; i++)
1092  newResult->args[i] = va_elem_type;
1093  }
1094  else
1095  newResult->nvargs = 0;
1096  newResult->ndargs = use_defaults ? pronargs - nargs : 0;
1097 
1098  /*
1099  * Does it have the same arguments as something we already accepted?
1100  * If so, decide what to do to avoid returning duplicate argument
1101  * lists. We can skip this check for the single-namespace case if no
1102  * special (named, variadic or defaults) match has been made, since
1103  * then the unique index on pg_proc guarantees all the matches have
1104  * different argument lists.
1105  */
1106  if (resultList != NULL &&
1107  (any_special || !OidIsValid(namespaceId)))
1108  {
1109  /*
1110  * If we have an ordered list from SearchSysCacheList (the normal
1111  * case), then any conflicting proc must immediately adjoin this
1112  * one in the list, so we only need to look at the newest result
1113  * item. If we have an unordered list, we have to scan the whole
1114  * result list. Also, if either the current candidate or any
1115  * previous candidate is a special match, we can't assume that
1116  * conflicts are adjacent.
1117  *
1118  * We ignore defaulted arguments in deciding what is a match.
1119  */
1120  FuncCandidateList prevResult;
1121 
1122  if (catlist->ordered && !any_special)
1123  {
1124  /* ndargs must be 0 if !any_special */
1125  if (effective_nargs == resultList->nargs &&
1126  memcmp(newResult->args,
1127  resultList->args,
1128  effective_nargs * sizeof(Oid)) == 0)
1129  prevResult = resultList;
1130  else
1131  prevResult = NULL;
1132  }
1133  else
1134  {
1135  int cmp_nargs = newResult->nargs - newResult->ndargs;
1136 
1137  for (prevResult = resultList;
1138  prevResult;
1139  prevResult = prevResult->next)
1140  {
1141  if (cmp_nargs == prevResult->nargs - prevResult->ndargs &&
1142  memcmp(newResult->args,
1143  prevResult->args,
1144  cmp_nargs * sizeof(Oid)) == 0)
1145  break;
1146  }
1147  }
1148 
1149  if (prevResult)
1150  {
1151  /*
1152  * We have a match with a previous result. Decide which one
1153  * to keep, or mark it ambiguous if we can't decide. The
1154  * logic here is preference > 0 means prefer the old result,
1155  * preference < 0 means prefer the new, preference = 0 means
1156  * ambiguous.
1157  */
1158  int preference;
1159 
1160  if (pathpos != prevResult->pathpos)
1161  {
1162  /*
1163  * Prefer the one that's earlier in the search path.
1164  */
1165  preference = pathpos - prevResult->pathpos;
1166  }
1167  else if (variadic && prevResult->nvargs == 0)
1168  {
1169  /*
1170  * With variadic functions we could have, for example,
1171  * both foo(numeric) and foo(variadic numeric[]) in the
1172  * same namespace; if so we prefer the non-variadic match
1173  * on efficiency grounds.
1174  */
1175  preference = 1;
1176  }
1177  else if (!variadic && prevResult->nvargs > 0)
1178  {
1179  preference = -1;
1180  }
1181  else
1182  {
1183  /*----------
1184  * We can't decide. This can happen with, for example,
1185  * both foo(numeric, variadic numeric[]) and
1186  * foo(variadic numeric[]) in the same namespace, or
1187  * both foo(int) and foo (int, int default something)
1188  * in the same namespace, or both foo(a int, b text)
1189  * and foo(b text, a int) in the same namespace.
1190  *----------
1191  */
1192  preference = 0;
1193  }
1194 
1195  if (preference > 0)
1196  {
1197  /* keep previous result */
1198  pfree(newResult);
1199  continue;
1200  }
1201  else if (preference < 0)
1202  {
1203  /* remove previous result from the list */
1204  if (prevResult == resultList)
1205  resultList = prevResult->next;
1206  else
1207  {
1208  FuncCandidateList prevPrevResult;
1209 
1210  for (prevPrevResult = resultList;
1211  prevPrevResult;
1212  prevPrevResult = prevPrevResult->next)
1213  {
1214  if (prevResult == prevPrevResult->next)
1215  {
1216  prevPrevResult->next = prevResult->next;
1217  break;
1218  }
1219  }
1220  Assert(prevPrevResult); /* assert we found it */
1221  }
1222  pfree(prevResult);
1223  /* fall through to add newResult to list */
1224  }
1225  else
1226  {
1227  /* mark old result as ambiguous, discard new */
1228  prevResult->oid = InvalidOid;
1229  pfree(newResult);
1230  continue;
1231  }
1232  }
1233  }
1234 
1235  /*
1236  * Okay to add it to result list
1237  */
1238  newResult->next = resultList;
1239  resultList = newResult;
1240  }
1241 
1242  ReleaseSysCacheList(catlist);
1243 
1244  return resultList;
1245 }
#define NIL
Definition: pg_list.h:69
int n_members
Definition: catcache.h:154
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
static Oid myTempNamespace
Definition: namespace.c:180
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
struct _FuncCandidateList * FuncCandidateList
CatCTup * members[FLEXIBLE_ARRAY_MEMBER]
Definition: catcache.h:155
Oid args[FLEXIBLE_ARRAY_MEMBER]
Definition: namespace.h:37
void pfree(void *pointer)
Definition: mcxt.c:950
#define CStringGetDatum(X)
Definition: postgres.h:584
#define SearchSysCacheList1(cacheId, key1)
Definition: syscache.h:197
struct _FuncCandidateList * next
Definition: namespace.h:30
#define ReleaseSysCacheList(x)
Definition: syscache.h:206
FormData_pg_proc * Form_pg_proc
Definition: pg_proc.h:83
#define InvalidOid
Definition: postgres_ext.h:36
#define Max(x, y)
Definition: c.h:800
#define NULL
Definition: c.h:229
#define Assert(condition)
Definition: c.h:675
static bool MatchNamedCall(HeapTuple proctup, int nargs, List *argnames, int **argnumbers)
Definition: namespace.c:1265
static List * activeSearchPath
Definition: namespace.c:133
bool ordered
Definition: catcache.h:150
void * palloc(Size size)
Definition: mcxt.c:849
int i
HeapTupleData tuple
Definition: catcache.h:116
#define HeapTupleGetOid(tuple)
Definition: htup_details.h:695
#define offsetof(type, field)
Definition: c.h:555
#define lfirst_oid(lc)
Definition: pg_list.h:108
bool FunctionIsVisible ( Oid  funcid)

Definition at line 1373 of file namespace.c.

References _FuncCandidateList::args, elog, ERROR, FuncnameGetCandidates(), GETSTRUCT, HeapTupleIsValid, list_make1, list_member_oid(), makeString(), 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().

1374 {
1375  HeapTuple proctup;
1376  Form_pg_proc procform;
1377  Oid pronamespace;
1378  bool visible;
1379 
1380  proctup = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcid));
1381  if (!HeapTupleIsValid(proctup))
1382  elog(ERROR, "cache lookup failed for function %u", funcid);
1383  procform = (Form_pg_proc) GETSTRUCT(proctup);
1384 
1386 
1387  /*
1388  * Quick check: if it ain't in the path at all, it ain't visible. Items in
1389  * the system namespace are surely in the path and so we needn't even do
1390  * list_member_oid() for them.
1391  */
1392  pronamespace = procform->pronamespace;
1393  if (pronamespace != PG_CATALOG_NAMESPACE &&
1394  !list_member_oid(activeSearchPath, pronamespace))
1395  visible = false;
1396  else
1397  {
1398  /*
1399  * If it is in the path, it might still not be visible; it could be
1400  * hidden by another proc of the same name and arguments earlier in
1401  * the path. So we must do a slow check to see if this is the same
1402  * proc that would be found by FuncnameGetCandidates.
1403  */
1404  char *proname = NameStr(procform->proname);
1405  int nargs = procform->pronargs;
1406  FuncCandidateList clist;
1407 
1408  visible = false;
1409 
1410  clist = FuncnameGetCandidates(list_make1(makeString(proname)),
1411  nargs, NIL, false, false, false);
1412 
1413  for (; clist; clist = clist->next)
1414  {
1415  if (memcmp(clist->args, procform->proargtypes.values,
1416  nargs * sizeof(Oid)) == 0)
1417  {
1418  /* Found the expected entry; is it the right proc? */
1419  visible = (clist->oid == funcid);
1420  break;
1421  }
1422  }
1423  }
1424 
1425  ReleaseSysCache(proctup);
1426 
1427  return visible;
1428 }
Value * makeString(char *str)
Definition: value.c:53
#define NIL
Definition: pg_list.h:69
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
unsigned int Oid
Definition: postgres_ext.h:31
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define list_make1(x1)
Definition: pg_list.h:133
Oid args[FLEXIBLE_ARRAY_MEMBER]
Definition: namespace.h:37
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
FuncCandidateList FuncnameGetCandidates(List *names, int nargs, List *argnames, bool expand_variadic, bool expand_defaults, bool missing_ok)
Definition: namespace.c:902
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
struct _FuncCandidateList * next
Definition: namespace.h:30
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
FormData_pg_proc * Form_pg_proc
Definition: pg_proc.h:83
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
Oid get_collation_oid ( List collname,
bool  missing_ok 
)

Definition at line 3380 of file namespace.c.

References COLLNAMEENCNSP, DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetDatabaseEncoding(), GetDatabaseEncodingName(), GetSysCacheOid3, Int32GetDatum, InvalidOid, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, and recomputeNamespacePath().

Referenced by AlterCollation(), ComputeIndexAttrs(), ComputePartitionAttrs(), DefineCollation(), DefineDomain(), DefineRange(), get_object_address(), and LookupCollation().

3381 {
3382  char *schemaname;
3383  char *collation_name;
3384  int32 dbencoding = GetDatabaseEncoding();
3385  Oid namespaceId;
3386  Oid colloid;
3387  ListCell *l;
3388 
3389  /* deconstruct the name list */
3390  DeconstructQualifiedName(name, &schemaname, &collation_name);
3391 
3392  if (schemaname)
3393  {
3394  /* use exact schema given */
3395  namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
3396  if (missing_ok && !OidIsValid(namespaceId))
3397  return InvalidOid;
3398 
3399  /* first try for encoding-specific entry, then any-encoding */
3400  colloid = GetSysCacheOid3(COLLNAMEENCNSP,
3401  PointerGetDatum(collation_name),
3402  Int32GetDatum(dbencoding),
3403  ObjectIdGetDatum(namespaceId));
3404  if (OidIsValid(colloid))
3405  return colloid;
3406  colloid = GetSysCacheOid3(COLLNAMEENCNSP,
3407  PointerGetDatum(collation_name),
3408  Int32GetDatum(-1),
3409  ObjectIdGetDatum(namespaceId));
3410  if (OidIsValid(colloid))
3411  return colloid;
3412  }
3413  else
3414  {
3415  /* search for it in search path */
3417 
3418  foreach(l, activeSearchPath)
3419  {
3420  namespaceId = lfirst_oid(l);
3421 
3422  if (namespaceId == myTempNamespace)
3423  continue; /* do not look in temp namespace */
3424 
3425  colloid = GetSysCacheOid3(COLLNAMEENCNSP,
3426  PointerGetDatum(collation_name),
3427  Int32GetDatum(dbencoding),
3428  ObjectIdGetDatum(namespaceId));
3429  if (OidIsValid(colloid))
3430  return colloid;
3431  colloid = GetSysCacheOid3(COLLNAMEENCNSP,
3432  PointerGetDatum(collation_name),
3433  Int32GetDatum(-1),
3434  ObjectIdGetDatum(namespaceId));
3435  if (OidIsValid(colloid))
3436  return colloid;
3437  }
3438  }
3439 
3440  /* Not found in path */
3441  if (!missing_ok)
3442  ereport(ERROR,
3443  (errcode(ERRCODE_UNDEFINED_OBJECT),
3444  errmsg("collation \"%s\" for encoding \"%s\" does not exist",
3446  return InvalidOid;
3447 }
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
int errcode(int sqlerrcode)
Definition: elog.c:575
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid3(cacheId, key1, key2, key3)
Definition: syscache.h:183
signed int int32
Definition: c.h:256
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
char * NameListToString(List *names)
Definition: namespace.c:2953
int GetDatabaseEncoding(void)
Definition: mbutils.c:1015
#define InvalidOid
Definition: postgres_ext.h:36
const char * GetDatabaseEncodingName(void)
Definition: mbutils.c:1021
const char * name
Definition: encode.c:521
static List * activeSearchPath
Definition: namespace.c:133
#define Int32GetDatum(X)
Definition: postgres.h:485
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define lfirst_oid(lc)
Definition: pg_list.h:108
Oid get_conversion_oid ( List conname,
bool  missing_ok 
)

Definition at line 3453 of file namespace.c.

References CONNAMENSP, DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, InvalidOid, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, and recomputeNamespacePath().

Referenced by get_object_address().

3454 {
3455  char *schemaname;
3456  char *conversion_name;
3457  Oid namespaceId;
3458  Oid conoid = InvalidOid;
3459  ListCell *l;
3460 
3461  /* deconstruct the name list */
3462  DeconstructQualifiedName(name, &schemaname, &conversion_name);
3463 
3464  if (schemaname)
3465  {
3466  /* use exact schema given */
3467  namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
3468  if (missing_ok && !OidIsValid(namespaceId))
3469  conoid = InvalidOid;
3470  else
3471  conoid = GetSysCacheOid2(CONNAMENSP,
3472  PointerGetDatum(conversion_name),
3473  ObjectIdGetDatum(namespaceId));
3474  }
3475  else
3476  {
3477  /* search for it in search path */
3479 
3480  foreach(l, activeSearchPath)
3481  {
3482  namespaceId = lfirst_oid(l);
3483 
3484  if (namespaceId == myTempNamespace)
3485  continue; /* do not look in temp namespace */
3486 
3487  conoid = GetSysCacheOid2(CONNAMENSP,
3488  PointerGetDatum(conversion_name),
3489  ObjectIdGetDatum(namespaceId));
3490  if (OidIsValid(conoid))
3491  return conoid;
3492  }
3493  }
3494 
3495  /* Not found in path */
3496  if (!OidIsValid(conoid) && !missing_ok)
3497  ereport(ERROR,
3498  (errcode(ERRCODE_UNDEFINED_OBJECT),
3499  errmsg("conversion \"%s\" does not exist",
3500  NameListToString(name))));
3501  return conoid;
3502 }
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
int errcode(int sqlerrcode)
Definition: elog.c:575
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid2(cacheId, key1, key2)
Definition: syscache.h:181
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
char * NameListToString(List *names)
Definition: namespace.c:2953
#define InvalidOid
Definition: postgres_ext.h:36
const char * name
Definition: encode.c:521
static List * activeSearchPath
Definition: namespace.c:133
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define lfirst_oid(lc)
Definition: pg_list.h:108
Oid get_namespace_oid ( const char *  nspname,
bool  missing_ok 
)

Definition at line 2895 of file namespace.c.

References CStringGetDatum, ereport, errcode(), errmsg(), ERROR, GetSysCacheOid1, NAMESPACENAME, and OidIsValid.

Referenced by binary_upgrade_create_empty_extension(), convert_schema_name(), CreateExtensionInternal(), get_object_address_defacl(), get_object_address_unqualified(), InitTempTableNamespace(), LookupCreationNamespace(), LookupExplicitNamespace(), LookupNamespaceNoError(), objectNamesToOids(), QualifiedNameGetCreationNamespace(), RangeVarGetCreationNamespace(), recomputeNamespacePath(), regnamespacein(), ReindexMultipleTables(), RenameSchema(), SetDefaultACLsInSchemas(), and to_regnamespace().

2896 {
2897  Oid oid;
2898 
2900  if (!OidIsValid(oid) && !missing_ok)
2901  ereport(ERROR,
2902  (errcode(ERRCODE_UNDEFINED_SCHEMA),
2903  errmsg("schema \"%s\" does not exist", nspname)));
2904 
2905  return oid;
2906 }
int errcode(int sqlerrcode)
Definition: elog.c:575
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid1(cacheId, key1)
Definition: syscache.h:179
#define ERROR
Definition: elog.h:43
#define CStringGetDatum(X)
Definition: postgres.h:584
#define ereport(elevel, rest)
Definition: elog.h:122
int errmsg(const char *fmt,...)
Definition: elog.c:797
Oid get_statistics_oid ( List names,
bool  missing_ok 
)

Definition at line 2094 of file namespace.c.

References DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, InvalidOid, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, recomputeNamespacePath(), and STATEXTNAMENSP.

Referenced by get_object_address().

2095 {
2096  char *schemaname;
2097  char *stats_name;
2098  Oid namespaceId;
2099  Oid stats_oid = InvalidOid;
2100  ListCell *l;
2101 
2102  /* deconstruct the name list */
2103  DeconstructQualifiedName(names, &schemaname, &stats_name);
2104 
2105  if (schemaname)
2106  {
2107  /* use exact schema given */
2108  namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
2109  if (missing_ok && !OidIsValid(namespaceId))
2110  stats_oid = InvalidOid;
2111  else
2112  stats_oid = GetSysCacheOid2(STATEXTNAMENSP,
2113  PointerGetDatum(stats_name),
2114  ObjectIdGetDatum(namespaceId));
2115  }
2116  else
2117  {
2118  /* search for it in search path */
2120 
2121  foreach(l, activeSearchPath)
2122  {
2123  namespaceId = lfirst_oid(l);
2124 
2125  if (namespaceId == myTempNamespace)
2126  continue; /* do not look in temp namespace */
2127  stats_oid = GetSysCacheOid2(STATEXTNAMENSP,
2128  PointerGetDatum(stats_name),
2129  ObjectIdGetDatum(namespaceId));
2130  if (OidIsValid(stats_oid))
2131  break;
2132  }
2133  }
2134 
2135  if (!OidIsValid(stats_oid) && !missing_ok)
2136  ereport(ERROR,
2137  (errcode(ERRCODE_UNDEFINED_OBJECT),
2138  errmsg("statistics \"%s\" do not exist",
2139  NameListToString(names))));
2140 
2141  return stats_oid;
2142 }
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
int errcode(int sqlerrcode)
Definition: elog.c:575
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid2(cacheId, key1, key2)
Definition: syscache.h:181
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
char * NameListToString(List *names)
Definition: namespace.c:2953
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define lfirst_oid(lc)
Definition: pg_list.h:108
Oid get_ts_config_oid ( List names,
bool  missing_ok 
)

Definition at line 2529 of file namespace.c.

References DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, InvalidOid, 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().

2530 {
2531  char *schemaname;
2532  char *config_name;
2533  Oid namespaceId;
2534  Oid cfgoid = InvalidOid;
2535  ListCell *l;
2536 
2537  /* deconstruct the name list */
2538  DeconstructQualifiedName(names, &schemaname, &config_name);
2539 
2540  if (schemaname)
2541  {
2542  /* use exact schema given */
2543  namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
2544  if (missing_ok && !OidIsValid(namespaceId))
2545  cfgoid = InvalidOid;
2546  else
2548  PointerGetDatum(config_name),
2549  ObjectIdGetDatum(namespaceId));
2550  }
2551  else
2552  {
2553  /* search for it in search path */
2555 
2556  foreach(l, activeSearchPath)
2557  {
2558  namespaceId = lfirst_oid(l);
2559 
2560  if (namespaceId == myTempNamespace)
2561  continue; /* do not look in temp namespace */
2562 
2564  PointerGetDatum(config_name),
2565  ObjectIdGetDatum(namespaceId));
2566  if (OidIsValid(cfgoid))
2567  break;
2568  }
2569  }
2570 
2571  if (!OidIsValid(cfgoid) && !missing_ok)
2572  ereport(ERROR,
2573  (errcode(ERRCODE_UNDEFINED_OBJECT),
2574  errmsg("text search configuration \"%s\" does not exist",
2575  NameListToString(names))));
2576 
2577  return cfgoid;
2578 }
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
int errcode(int sqlerrcode)
Definition: elog.c:575
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid2(cacheId, key1, key2)
Definition: syscache.h:181
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
char * NameListToString(List *names)
Definition: namespace.c:2953
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define lfirst_oid(lc)
Definition: pg_list.h:108
Oid get_ts_dict_oid ( List names,
bool  missing_ok 
)

Definition at line 2276 of file namespace.c.

References DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, InvalidOid, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, recomputeNamespacePath(), and TSDICTNAMENSP.

Referenced by AlterTSDictionary(), get_object_address(), MakeConfigurationMapping(), regdictionaryin(), thesaurus_init(), and unaccent_dict().

2277 {
2278  char *schemaname;
2279  char *dict_name;
2280  Oid namespaceId;
2281  Oid dictoid = InvalidOid;
2282  ListCell *l;
2283 
2284  /* deconstruct the name list */
2285  DeconstructQualifiedName(names, &schemaname, &dict_name);
2286 
2287  if (schemaname)
2288  {
2289  /* use exact schema given */
2290  namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
2291  if (missing_ok && !OidIsValid(namespaceId))
2292  dictoid = InvalidOid;
2293  else
2294  dictoid = GetSysCacheOid2(TSDICTNAMENSP,
2295  PointerGetDatum(dict_name),
2296  ObjectIdGetDatum(namespaceId));
2297  }
2298  else
2299  {
2300  /* search for it in search path */
2302 
2303  foreach(l, activeSearchPath)
2304  {
2305  namespaceId = lfirst_oid(l);
2306 
2307  if (namespaceId == myTempNamespace)
2308  continue; /* do not look in temp namespace */
2309 
2310  dictoid = GetSysCacheOid2(TSDICTNAMENSP,
2311  PointerGetDatum(dict_name),
2312  ObjectIdGetDatum(namespaceId));
2313  if (OidIsValid(dictoid))
2314  break;
2315  }
2316  }
2317 
2318  if (!OidIsValid(dictoid) && !missing_ok)
2319  ereport(ERROR,
2320  (errcode(ERRCODE_UNDEFINED_OBJECT),
2321  errmsg("text search dictionary \"%s\" does not exist",
2322  NameListToString(names))));
2323 
2324  return dictoid;
2325 }
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
int errcode(int sqlerrcode)
Definition: elog.c:575
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid2(cacheId, key1, key2)
Definition: syscache.h:181
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
char * NameListToString(List *names)
Definition: namespace.c:2953
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define lfirst_oid(lc)
Definition: pg_list.h:108
Oid get_ts_parser_oid ( List names,
bool  missing_ok 
)

Definition at line 2150 of file namespace.c.

References DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, InvalidOid, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, recomputeNamespacePath(), and TSPARSERNAMENSP.

Referenced by DefineTSConfiguration(), get_object_address(), ts_parse_byname(), and ts_token_type_byname().

2151 {
2152  char *schemaname;
2153  char *parser_name;
2154  Oid namespaceId;
2155  Oid prsoid = InvalidOid;
2156  ListCell *l;
2157 
2158  /* deconstruct the name list */
2159  DeconstructQualifiedName(names, &schemaname, &parser_name);
2160 
2161  if (schemaname)
2162  {
2163  /* use exact schema given */
2164  namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
2165  if (missing_ok && !OidIsValid(namespaceId))
2166  prsoid = InvalidOid;
2167  else
2169  PointerGetDatum(parser_name),
2170  ObjectIdGetDatum(namespaceId));
2171  }
2172  else
2173  {
2174  /* search for it in search path */
2176 
2177  foreach(l, activeSearchPath)
2178  {
2179  namespaceId = lfirst_oid(l);
2180 
2181  if (namespaceId == myTempNamespace)
2182  continue; /* do not look in temp namespace */
2183 
2185  PointerGetDatum(parser_name),
2186  ObjectIdGetDatum(namespaceId));
2187  if (OidIsValid(prsoid))
2188  break;
2189  }
2190  }
2191 
2192  if (!OidIsValid(prsoid) && !missing_ok)
2193  ereport(ERROR,
2194  (errcode(ERRCODE_UNDEFINED_OBJECT),
2195  errmsg("text search parser \"%s\" does not exist",
2196  NameListToString(names))));
2197 
2198  return prsoid;
2199 }
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
int errcode(int sqlerrcode)
Definition: elog.c:575
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid2(cacheId, key1, key2)
Definition: syscache.h:181
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
char * NameListToString(List *names)
Definition: namespace.c:2953
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define lfirst_oid(lc)
Definition: pg_list.h:108
Oid get_ts_template_oid ( List names,
bool  missing_ok 
)

Definition at line 2403 of file namespace.c.

References DeconstructQualifiedName(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, InvalidOid, lfirst_oid, LookupExplicitNamespace(), myTempNamespace, NameListToString(), ObjectIdGetDatum, OidIsValid, PointerGetDatum, recomputeNamespacePath(), and TSTEMPLATENAMENSP.

Referenced by DefineTSDictionary(), and get_object_address().

2404 {
2405  char *schemaname;
2406  char *template_name;
2407  Oid namespaceId;
2408  Oid tmploid = InvalidOid;
2409  ListCell *l;
2410 
2411  /* deconstruct the name list */
2412  DeconstructQualifiedName(names, &schemaname, &template_name);
2413 
2414  if (schemaname)
2415  {
2416  /* use exact schema given */
2417  namespaceId = LookupExplicitNamespace(schemaname, missing_ok);
2418  if (missing_ok && !OidIsValid(namespaceId))
2419  tmploid = InvalidOid;
2420  else
2422  PointerGetDatum(template_name),
2423  ObjectIdGetDatum(namespaceId));
2424  }
2425  else
2426  {
2427  /* search for it in search path */
2429 
2430  foreach(l, activeSearchPath)
2431  {
2432  namespaceId = lfirst_oid(l);
2433 
2434  if (namespaceId == myTempNamespace)
2435  continue; /* do not look in temp namespace */
2436 
2438  PointerGetDatum(template_name),
2439  ObjectIdGetDatum(namespaceId));
2440  if (OidIsValid(tmploid))
2441  break;
2442  }
2443  }
2444 
2445  if (!OidIsValid(tmploid) && !missing_ok)
2446  ereport(ERROR,
2447  (errcode(ERRCODE_UNDEFINED_OBJECT),
2448  errmsg("text search template \"%s\" does not exist",
2449  NameListToString(names))));
2450 
2451  return tmploid;
2452 }
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
int errcode(int sqlerrcode)
Definition: elog.c:575
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid2(cacheId, key1, key2)
Definition: syscache.h:181
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
char * NameListToString(List *names)
Definition: namespace.c:2953
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define lfirst_oid(lc)
Definition: pg_list.h:108
OverrideSearchPath* GetOverrideSearchPath ( MemoryContext  context)

Definition at line 3171 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(), result, and OverrideSearchPath::schemas.

Referenced by CompleteCachedPlan(), CreateSchemaCommand(), and RevalidateCachedQuery().

3172 {
3174  List *schemas;
3175  MemoryContext oldcxt;
3176 
3178 
3179  oldcxt = MemoryContextSwitchTo(context);
3180 
3181  result = (OverrideSearchPath *) palloc0(sizeof(OverrideSearchPath));
3182  schemas = list_copy(activeSearchPath);
3183  while (schemas && linitial_oid(schemas) != activeCreationNamespace)
3184  {
3185  if (linitial_oid(schemas) == myTempNamespace)
3186  result->addTemp = true;
3187  else
3188  {
3190  result->addCatalog = true;
3191  }
3192  schemas = list_delete_first(schemas);
3193  }
3194  result->schemas = schemas;
3195 
3196  MemoryContextSwitchTo(oldcxt);
3197 
3198  return result;
3199 }
static Oid myTempNamespace
Definition: namespace.c:180
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:109
List * list_copy(const List *oldlist)
Definition: list.c:1160
return result
Definition: formatting.c:1618
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
static Oid activeCreationNamespace
Definition: namespace.c:136
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void * palloc0(Size size)
Definition: mcxt.c:878
#define Assert(condition)
Definition: c.h:675
#define linitial_oid(l)
Definition: pg_list.h:112
static List * activeSearchPath
Definition: namespace.c:133
Definition: pg_list.h:45
List * list_delete_first(List *list)
Definition: list.c:666
int GetTempNamespaceBackendId ( Oid  namespaceId)

Definition at line 3085 of file namespace.c.

References get_namespace_name(), InvalidBackendId, pfree(), and result.

Referenced by do_autovacuum(), pg_relation_filepath(), and RelationBuildDesc().

3086 {
3087  int result;
3088  char *nspname;
3089 
3090  /* See if the namespace name starts with "pg_temp_" or "pg_toast_temp_" */
3091  nspname = get_namespace_name(namespaceId);
3092  if (!nspname)
3093  return InvalidBackendId; /* no such namespace? */
3094  if (strncmp(nspname, "pg_temp_", 8) == 0)
3095  result = atoi(nspname + 8);
3096  else if (strncmp(nspname, "pg_toast_temp_", 14) == 0)
3097  result = atoi(nspname + 14);
3098  else
3099  result = InvalidBackendId;
3100  pfree(nspname);
3101  return result;
3102 }
return result
Definition: formatting.c:1618
void pfree(void *pointer)
Definition: mcxt.c:950
char * get_namespace_name(Oid nspid)
Definition: lsyscache.c:3006
#define InvalidBackendId
Definition: backendid.h:23
void GetTempNamespaceState ( Oid tempNamespaceId,
Oid tempToastNamespaceId 
)

Definition at line 3124 of file namespace.c.

References myTempNamespace, and myTempToastNamespace.

Referenced by InitializeParallelDSM().

3125 {
3126  /* Return namespace OIDs, or 0 if session has not created temp namespace */
3127  *tempNamespaceId = myTempNamespace;
3128  *tempToastNamespaceId = myTempToastNamespace;
3129 }
static Oid myTempToastNamespace
Definition: namespace.c:182
static Oid myTempNamespace
Definition: namespace.c:180
Oid GetTempToastNamespace ( void  )

Definition at line 3110 of file namespace.c.

References Assert, myTempToastNamespace, and OidIsValid.

Referenced by create_toast_table().

3111 {
3113  return myTempToastNamespace;
3114 }
static Oid myTempToastNamespace
Definition: namespace.c:182
#define OidIsValid(objectId)
Definition: c.h:538
#define Assert(condition)
Definition: c.h:675
void InitializeSearchPath ( void  )

Definition at line 4016 of file namespace.c.

References activeCreationNamespace, activeTempCreationPending, baseCreationNamespace, baseSearchPath, baseSearchPathValid, baseTempCreationPending, CacheRegisterSyscacheCallback(), GetUserId(), IsBootstrapProcessingMode, list_make1_oid, MemoryContextSwitchTo(), NamespaceCallback(), NAMESPACEOID, namespaceUser, PG_CATALOG_NAMESPACE, and TopMemoryContext.

Referenced by InitPostgres().

4017 {
4019  {
4020  /*
4021  * In bootstrap mode, the search path must be 'pg_catalog' so that
4022  * tables are created in the proper namespace; ignore the GUC setting.
4023  */
4024  MemoryContext oldcxt;
4025 
4028  MemoryContextSwitchTo(oldcxt);
4030  baseTempCreationPending = false;
4031  baseSearchPathValid = true;
4036  }
4037  else
4038  {
4039  /*
4040  * In normal mode, arrange for a callback on any syscache invalidation
4041  * of pg_namespace rows.
4042  */
4045  (Datum) 0);
4046  /* Force search path to be recomputed on next use */
4047  baseSearchPathValid = false;
4048  }
4049 }
static bool baseSearchPathValid
Definition: namespace.c:152
Oid GetUserId(void)
Definition: miscinit.c:283
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:109
static Oid namespaceUser
Definition: namespace.c:149
static Oid activeCreationNamespace
Definition: namespace.c:136
static bool baseTempCreationPending
Definition: namespace.c:147
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
static void NamespaceCallback(Datum arg, int cacheid, uint32 hashvalue)
Definition: namespace.c:4056
static bool activeTempCreationPending
Definition: namespace.c:139
MemoryContext TopMemoryContext
Definition: mcxt.c:43
static Oid baseCreationNamespace
Definition: namespace.c:145
static List * baseSearchPath
Definition: namespace.c:143
void CacheRegisterSyscacheCallback(int cacheid, SyscacheCallbackFunction func, Datum arg)
Definition: inval.c:1381
uintptr_t Datum
Definition: postgres.h:372
#define list_make1_oid(x1)
Definition: pg_list.h:145
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:365
static List * activeSearchPath
Definition: namespace.c:133
bool isAnyTempNamespace ( Oid  namespaceId)

Definition at line 3046 of file namespace.c.

References get_namespace_name(), pfree(), and result.

Referenced by AlterTableMoveAll(), CheckSetNamespace(), EventTriggerSQLDropAddObject(), isOtherTempNamespace(), pg_event_trigger_ddl_commands(), and RangeVarAdjustRelationPersistence().

3047 {
3048  bool result;
3049  char *nspname;
3050 
3051  /* True if the namespace name starts with "pg_temp_" or "pg_toast_temp_" */
3052  nspname = get_namespace_name(namespaceId);
3053  if (!nspname)
3054  return false; /* no such namespace? */
3055  result = (strncmp(nspname, "pg_temp_", 8) == 0) ||
3056  (strncmp(nspname, "pg_toast_temp_", 14) == 0);
3057  pfree(nspname);
3058  return result;
3059 }
return result
Definition: formatting.c:1618
void pfree(void *pointer)
Definition: mcxt.c:950
char * get_namespace_name(Oid nspid)
Definition: lsyscache.c:3006
bool isOtherTempNamespace ( Oid  namespaceId)

Definition at line 3069 of file namespace.c.

References isAnyTempNamespace(), and isTempOrTempToastNamespace().

Referenced by pg_is_other_temp_schema().

3070 {
3071  /* If it's my own temp namespace, say "false" */
3072  if (isTempOrTempToastNamespace(namespaceId))
3073  return false;
3074  /* Else, if it's any temp namespace, say "true" */
3075  return isAnyTempNamespace(namespaceId);
3076 }
bool isTempOrTempToastNamespace(Oid namespaceId)
Definition: namespace.c:3032
bool isAnyTempNamespace(Oid namespaceId)
Definition: namespace.c:3046
bool isTempNamespace ( Oid  namespaceId)

Definition at line 3008 of file namespace.c.

References myTempNamespace, and OidIsValid.

Referenced by EventTriggerSQLDropAddObject(), ExecCheckXactReadOnly(), get_namespace_name_or_temp(), pg_namespace_aclmask(), and ReindexMultipleTables().

3009 {
3010  if (OidIsValid(myTempNamespace) && myTempNamespace == namespaceId)
3011  return true;
3012  return false;
3013 }
static Oid myTempNamespace
Definition: namespace.c:180
#define OidIsValid(objectId)
Definition: c.h:538
bool isTempOrTempToastNamespace ( Oid  namespaceId)

Definition at line 3032 of file namespace.c.

References myTempNamespace, myTempToastNamespace, and OidIsValid.

Referenced by create_toast_table(), isOtherTempNamespace(), pg_relation_filepath(), RangeVarAdjustRelationPersistence(), RelationBuildDesc(), and RelationBuildLocalRelation().

3033 {
3034  if (OidIsValid(myTempNamespace) &&
3035  (myTempNamespace == namespaceId || myTempToastNamespace == namespaceId))
3036  return true;
3037  return false;
3038 }
static Oid myTempToastNamespace
Definition: namespace.c:182
static Oid myTempNamespace
Definition: namespace.c:180
#define OidIsValid(objectId)
Definition: c.h:538
bool isTempToastNamespace ( Oid  namespaceId)

Definition at line 3020 of file namespace.c.

References myTempToastNamespace, and OidIsValid.

Referenced by IsToastNamespace().

3021 {
3022  if (OidIsValid(myTempToastNamespace) && myTempToastNamespace == namespaceId)
3023  return true;
3024  return false;
3025 }
static Oid myTempToastNamespace
Definition: namespace.c:182
#define OidIsValid(objectId)
Definition: c.h:538
Oid LookupCreationNamespace ( const char *  nspname)

Definition at line 2786 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(), ExecAlterObjectSchemaStmt(), ImportForeignSchema(), and make_new_heap().

2787 {
2788  Oid namespaceId;
2789  AclResult aclresult;
2790 
2791  /* check for pg_temp alias */
2792  if (strcmp(nspname, "pg_temp") == 0)
2793  {
2794  /* Initialize temp namespace if first time through */
2797  return myTempNamespace;
2798  }
2799 
2800  namespaceId = get_namespace_oid(nspname, false);
2801 
2802  aclresult = pg_namespace_aclcheck(namespaceId, GetUserId(), ACL_CREATE);
2803  if (aclresult != ACLCHECK_OK)
2805  nspname);
2806 
2807  return namespaceId;
2808 }
Oid get_namespace_oid(const char *nspname, bool missing_ok)
Definition: namespace.c:2895
Oid GetUserId(void)
Definition: miscinit.c:283
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
AclResult pg_namespace_aclcheck(Oid nsp_oid, Oid roleid, AclMode mode)
Definition: aclchk.c:4484
#define ACL_CREATE
Definition: parsenodes.h:75
void aclcheck_error(AclResult aclerr, AclObjectKind objectkind, const char *objectname)
Definition: aclchk.c:3399
static void InitTempTableNamespace(void)
Definition: namespace.c:3685
AclResult
Definition: acl.h:170
Oid LookupExplicitNamespace ( const char *  nspname,
bool  missing_ok 
)

Definition at line 2743 of file namespace.c.

References ACL_KIND_NAMESPACE, ACL_USAGE, aclcheck_error(), ACLCHECK_OK, get_namespace_oid(), GetUserId(), InvalidOid, InvokeNamespaceSearchHook, myTempNamespace, OidIsValid, and pg_namespace_aclcheck().

Referenced by AfterTriggerSetState(), FuncnameGetCandidates(), get_collation_oid(), get_conversion_oid(), get_statistics_oid(), get_ts_config_oid(), get_ts_dict_oid(), get_ts_parser_oid(), get_ts_template_oid(), logicalrep_typmap_getid(), LookupTypeName(), make_oper_cache_key(), objectsInSchemaToOids(), OpClassCacheLookup(), OpernameGetCandidates(), OpernameGetOprid(), OpFamilyCacheLookup(), RangeVarGetRelidExtended(), ResolveOpClass(), schema_to_xml(), schema_to_xml_and_xmlschema(), and schema_to_xmlschema_internal().

2744 {
2745  Oid namespaceId;
2746  AclResult aclresult;
2747 
2748  /* check for pg_temp alias */
2749  if (strcmp(nspname, "pg_temp") == 0)
2750  {
2752  return myTempNamespace;
2753 
2754  /*
2755  * Since this is used only for looking up existing objects, there is
2756  * no point in trying to initialize the temp namespace here; and doing
2757  * so might create problems for some callers --- just fall through.
2758  */
2759  }
2760 
2761  namespaceId = get_namespace_oid(nspname, missing_ok);
2762  if (missing_ok && !OidIsValid(namespaceId))
2763  return InvalidOid;
2764 
2765  aclresult = pg_namespace_aclcheck(namespaceId, GetUserId(), ACL_USAGE);
2766  if (aclresult != ACLCHECK_OK)
2768  nspname);
2769  /* Schema search hook for this lookup */
2770  InvokeNamespaceSearchHook(namespaceId, true);
2771 
2772  return namespaceId;
2773 }
Oid get_namespace_oid(const char *nspname, bool missing_ok)
Definition: namespace.c:2895
Oid GetUserId(void)
Definition: miscinit.c:283
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
AclResult pg_namespace_aclcheck(Oid nsp_oid, Oid roleid, AclMode mode)
Definition: aclchk.c:4484
#define InvokeNamespaceSearchHook(objectId, ereport_on_violation)
Definition: objectaccess.h:174
void aclcheck_error(AclResult aclerr, AclObjectKind objectkind, const char *objectname)
Definition: aclchk.c:3399
#define ACL_USAGE
Definition: parsenodes.h:73
AclResult
Definition: acl.h:170
#define InvalidOid
Definition: postgres_ext.h:36
Oid LookupNamespaceNoError ( const char *  nspname)

Definition at line 2713 of file namespace.c.

References get_namespace_oid(), InvalidOid, InvokeNamespaceSearchHook, myTempNamespace, and OidIsValid.

Referenced by DropErrorMsgNonExistent(), refnameRangeTblEntry(), and schema_does_not_exist_skipping().

2714 {
2715  /* check for pg_temp alias */
2716  if (strcmp(nspname, "pg_temp") == 0)
2717  {
2719  {
2721  return myTempNamespace;
2722  }
2723 
2724  /*
2725  * Since this is used only for looking up existing objects, there is
2726  * no point in trying to initialize the temp namespace here; and doing
2727  * so might create problems for some callers. Just report "not found".
2728  */
2729  return InvalidOid;
2730  }
2731 
2732  return get_namespace_oid(nspname, true);
2733 }
Oid get_namespace_oid(const char *nspname, bool missing_ok)
Definition: namespace.c:2895
static Oid myTempNamespace
Definition: namespace.c:180
#define OidIsValid(objectId)
Definition: c.h:538
#define InvokeNamespaceSearchHook(objectId, ereport_on_violation)
Definition: objectaccess.h:174
#define InvalidOid
Definition: postgres_ext.h:36
RangeVar* makeRangeVarFromNameList ( List names)

Definition at line 2913 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_attrdef(), get_object_address_attribute(), get_object_address_publication_rel(), get_object_address_relobject(), get_raw_page_internal(), get_rel_from_relname(), get_relation_by_qualified_name(), nextval(), owningrel_does_not_exist_skipping(), pg_get_serial_sequence(), pg_get_viewdef_name(), pg_get_viewdef_name_ext(), pg_relpages(), pg_relpages_v1_5(), pgrowlocks(), pgstatindex(), pgstatindex_v1_5(), pgstattuple(), pgstattuple_v1_5(), process_owned_by(), regclassin(), RelationNameGetTupleDesc(), RemoveRelations(), row_security_active_name(), schema_does_not_exist_skipping(), text_regclass(), and to_regclass().

2914 {
2915  RangeVar *rel = makeRangeVar(NULL, NULL, -1);
2916 
2917  switch (list_length(names))
2918  {
2919  case 1:
2920  rel->relname = strVal(linitial(names));
2921  break;
2922  case 2:
2923  rel->schemaname = strVal(linitial(names));
2924  rel->relname = strVal(lsecond(names));
2925  break;
2926  case 3:
2927  rel->catalogname = strVal(linitial(names));
2928  rel->schemaname = strVal(lsecond(names));
2929  rel->relname = strVal(lthird(names));
2930  break;
2931  default:
2932  ereport(ERROR,
2933  (errcode(ERRCODE_SYNTAX_ERROR),
2934  errmsg("improper relation name (too many dotted names): %s",
2935  NameListToString(names))));
2936  break;
2937  }
2938 
2939  return rel;
2940 }
#define strVal(v)
Definition: value.h:54
int errcode(int sqlerrcode)
Definition: elog.c:575
#define lsecond(l)
Definition: pg_list.h:114
char * schemaname
Definition: primnodes.h:67
char * relname
Definition: primnodes.h:68
#define linitial(l)
Definition: pg_list.h:110
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
char * NameListToString(List *names)
Definition: namespace.c:2953
#define NULL
Definition: c.h:229
static int list_length(const List *l)
Definition: pg_list.h:89
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define lthird(l)
Definition: pg_list.h:118
RangeVar * makeRangeVar(char *schemaname, char *relname, int location)
Definition: makefuncs.c:419
char * catalogname
Definition: primnodes.h:66
char* NameListToQuotedString ( List names)

Definition at line 2987 of file namespace.c.

References appendStringInfoChar(), appendStringInfoString(), initStringInfo(), lfirst, list_head(), quote_identifier(), and strVal.

2988 {
2990  ListCell *l;
2991 
2992  initStringInfo(&string);
2993 
2994  foreach(l, names)
2995  {
2996  if (l != list_head(names))
2997  appendStringInfoChar(&string, '.');
2999  }
3000 
3001  return string.data;
3002 }
const char * quote_identifier(const char *ident)
Definition: ruleutils.c:10185
#define strVal(v)
Definition: value.h:54
void appendStringInfoString(StringInfo str, const char *s)
Definition: stringinfo.c:189
char string[11]
Definition: preproc-type.c:46
static ListCell * list_head(const List *l)
Definition: pg_list.h:77
void appendStringInfoChar(StringInfo str, char ch)
Definition: stringinfo.c:201
void initStringInfo(StringInfo str)
Definition: stringinfo.c:65
#define lfirst(lc)
Definition: pg_list.h:106
char* NameListToString ( List names)

Definition at line 2953 of file namespace.c.

References appendStringInfoChar(), appendStringInfoString(), elog, ERROR, initStringInfo(), IsA, lfirst, list_head(), name, nodeTag, and strVal.

Referenced by AggregateCreate(), AlterCollation(), AlterFunction(), AlterTSConfiguration(), AlterTSDictionary(), check_object_ownership(), CreateConversionCommand(), CreateEventTrigger(), CreateProceduralLanguage(), CreateTransform(), 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_attrdef(), get_object_address_attribute(), get_statistics_oid(), get_ts_config_oid(), get_ts_dict_oid(), get_ts_parser_oid(), get_ts_template_oid(), lookup_fdw_handler_func(), lookup_index_am_handler_func(), LookupAggWithArgs(), LookupFuncName(), LookupTypeName(), makeRangeVarFromNameList(), op_signature_string(), OpClassCacheLookup(), OperatorCreate(), OpFamilyCacheLookup(), owningrel_does_not_exist_skipping(), ParseFuncOrColumn(), plpgsql_post_column_ref(), RemoveObjects(), ResolveOpClass(), storeOperators(), storeProcedures(), transformColumnRef(), transformRangeTableSample(), ValidateJoinEstimator(), and ValidateRestrictionEstimator().

2954 {
2956  ListCell *l;
2957 
2958  initStringInfo(&string);
2959 
2960  foreach(l, names)
2961  {
2962  Node *name = (Node *) lfirst(l);
2963 
2964  if (l != list_head(names))
2965  appendStringInfoChar(&string, '.');
2966 
2967  if (IsA(name, String))
2968  appendStringInfoString(&string, strVal(name));
2969  else if (IsA(name, A_Star))
2970  appendStringInfoChar(&string, '*');
2971  else
2972  elog(ERROR, "unexpected node type in name list: %d",
2973  (int) nodeTag(name));
2974  }
2975 
2976  return string.data;
2977 }
#define IsA(nodeptr, _type_)
Definition: nodes.h:557
Definition: nodes.h:506
#define strVal(v)
Definition: value.h:54
#define ERROR
Definition: elog.h:43
void appendStringInfoString(StringInfo str, const char *s)
Definition: stringinfo.c:189
char string[11]
Definition: preproc-type.c:46
static ListCell * list_head(const List *l)
Definition: pg_list.h:77
void appendStringInfoChar(StringInfo str, char ch)
Definition: stringinfo.c:201
void initStringInfo(StringInfo str)
Definition: stringinfo.c:65
#define lfirst(lc)
Definition: pg_list.h:106
const char * name
Definition: encode.c:521
#define nodeTag(nodeptr)
Definition: nodes.h:511
#define elog
Definition: elog.h:219
bool OpclassIsVisible ( Oid  opcid)

Definition at line 1792 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().

1793 {
1794  HeapTuple opctup;
1795  Form_pg_opclass opcform;
1796  Oid opcnamespace;
1797  bool visible;
1798 
1799  opctup = SearchSysCache1(CLAOID, ObjectIdGetDatum(opcid));
1800  if (!HeapTupleIsValid(opctup))
1801  elog(ERROR, "cache lookup failed for opclass %u", opcid);
1802  opcform = (Form_pg_opclass) GETSTRUCT(opctup);
1803 
1805 
1806  /*
1807  * Quick check: if it ain't in the path at all, it ain't visible. Items in
1808  * the system namespace are surely in the path and so we needn't even do
1809  * list_member_oid() for them.
1810  */
1811  opcnamespace = opcform->opcnamespace;
1812  if (opcnamespace != PG_CATALOG_NAMESPACE &&
1813  !list_member_oid(activeSearchPath, opcnamespace))
1814  visible = false;
1815  else
1816  {
1817  /*
1818  * If it is in the path, it might still not be visible; it could be
1819  * hidden by another opclass of the same name earlier in the path. So
1820  * we must do a slow check to see if this opclass would be found by
1821  * OpclassnameGetOpcid.
1822  */
1823  char *opcname = NameStr(opcform->opcname);
1824 
1825  visible = (OpclassnameGetOpcid(opcform->opcmethod, opcname) == opcid);
1826  }
1827 
1828  ReleaseSysCache(opctup);
1829 
1830  return visible;
1831 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
unsigned int Oid
Definition: postgres_ext.h:31
Oid OpclassnameGetOpcid(Oid amid, const char *opcname)
Definition: namespace.c:1759
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
FormData_pg_opclass * Form_pg_opclass
Definition: pg_opclass.h:68
Oid OpclassnameGetOpcid ( Oid  amid,
const char *  opcname 
)

Definition at line 1759 of file namespace.c.

References CLAAMNAMENSP, GetSysCacheOid3, InvalidOid, lfirst_oid, myTempNamespace, ObjectIdGetDatum, OidIsValid, PointerGetDatum, and recomputeNamespacePath().

Referenced by OpClassCacheLookup(), OpclassIsVisible(), and ResolveOpClass().

1760 {
1761  Oid opcid;
1762  ListCell *l;
1763 
1765 
1766  foreach(l, activeSearchPath)
1767  {
1768  Oid namespaceId = lfirst_oid(l);
1769 
1770  if (namespaceId == myTempNamespace)
1771  continue; /* do not look in temp namespace */
1772 
1773  opcid = GetSysCacheOid3(CLAAMNAMENSP,
1774  ObjectIdGetDatum(amid),
1775  PointerGetDatum(opcname),
1776  ObjectIdGetDatum(namespaceId));
1777  if (OidIsValid(opcid))
1778  return opcid;
1779  }
1780 
1781  /* Not found in path */
1782  return InvalidOid;
1783 }
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid3(cacheId, key1, key2, key3)
Definition: syscache.h:183
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
#define lfirst_oid(lc)
Definition: pg_list.h:108
bool OperatorIsVisible ( Oid  oprid)

Definition at line 1706 of file namespace.c.

References elog, ERROR, GETSTRUCT, HeapTupleIsValid, list_make1, list_member_oid(), makeString(), NameStr, ObjectIdGetDatum, OpernameGetOprid(), OPEROID, oprid(), PG_CATALOG_NAMESPACE, recomputeNamespacePath(), ReleaseSysCache(), and SearchSysCache1.

Referenced by format_operator_internal(), and pg_operator_is_visible().

1707 {
1708  HeapTuple oprtup;
1709  Form_pg_operator oprform;
1710  Oid oprnamespace;
1711  bool visible;
1712 
1714  if (!HeapTupleIsValid(oprtup))
1715  elog(ERROR, "cache lookup failed for operator %u", oprid);
1716  oprform = (Form_pg_operator) GETSTRUCT(oprtup);
1717 
1719 
1720  /*
1721  * Quick check: if it ain't in the path at all, it ain't visible. Items in
1722  * the system namespace are surely in the path and so we needn't even do
1723  * list_member_oid() for them.
1724  */
1725  oprnamespace = oprform->oprnamespace;
1726  if (oprnamespace != PG_CATALOG_NAMESPACE &&
1727  !list_member_oid(activeSearchPath, oprnamespace))
1728  visible = false;
1729  else
1730  {
1731  /*
1732  * If it is in the path, it might still not be visible; it could be
1733  * hidden by another operator of the same name and arguments earlier
1734  * in the path. So we must do a slow check to see if this is the same
1735  * operator that would be found by OpernameGetOprid.
1736  */
1737  char *oprname = NameStr(oprform->oprname);
1738 
1739  visible = (OpernameGetOprid(list_make1(makeString(oprname)),
1740  oprform->oprleft, oprform->oprright)
1741  == oprid);
1742  }
1743 
1744  ReleaseSysCache(oprtup);
1745 
1746  return visible;
1747 }
Value * makeString(char *str)
Definition: value.c:53
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
Oid oprid(Operator op)
Definition: parse_oper.c:245
unsigned int Oid
Definition: postgres_ext.h:31
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define list_make1(x1)
Definition: pg_list.h:133
Oid OpernameGetOprid(List *names, Oid oprleft, Oid oprright)
Definition: namespace.c:1444
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
FormData_pg_operator* Form_pg_operator
Definition: pg_operator.h:57
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
FuncCandidateList OpernameGetCandidates ( List names,
char  oprkind,
bool  missing_schema_ok 
)

Definition at line 1546 of file namespace.c.

References _FuncCandidateList::argnumbers, _FuncCandidateList::args, Assert, CStringGetDatum, DeconstructQualifiedName(), GETSTRUCT, HeapTupleGetOid, i, InvalidOid, 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(), right_oper(), and to_regoper().

1547 {
1548  FuncCandidateList resultList = NULL;
1549  char *resultSpace = NULL;
1550  int nextResult = 0;
1551  char *schemaname;
1552  char *opername;
1553  Oid namespaceId;
1554  CatCList *catlist;
1555  int i;
1556 
1557  /* deconstruct the name list */
1558  DeconstructQualifiedName(names, &schemaname, &opername);
1559 
1560  if (schemaname)
1561  {
1562  /* use exact schema given */
1563  namespaceId = LookupExplicitNamespace(schemaname, missing_schema_ok);
1564  if (missing_schema_ok && !OidIsValid(namespaceId))
1565  return NULL;
1566  }
1567  else
1568  {
1569  /* flag to indicate we need namespace search */
1570  namespaceId = InvalidOid;
1572  }
1573 
1574  /* Search syscache by name only */
1575  catlist = SearchSysCacheList1(OPERNAMENSP, CStringGetDatum(opername));
1576 
1577  /*
1578  * In typical scenarios, most if not all of the operators found by the
1579  * catcache search will end up getting returned; and there can be quite a
1580  * few, for common operator names such as '=' or '+'. To reduce the time
1581  * spent in palloc, we allocate the result space as an array large enough
1582  * to hold all the operators. The original coding of this routine did a
1583  * separate palloc for each operator, but profiling revealed that the
1584  * pallocs used an unreasonably large fraction of parsing time.
1585  */
1586 #define SPACE_PER_OP MAXALIGN(offsetof(struct _FuncCandidateList, args) + \
1587  2 * sizeof(Oid))
1588 
1589  if (catlist->n_members > 0)
1590  resultSpace = palloc(catlist->n_members * SPACE_PER_OP);
1591 
1592  for (i = 0; i < catlist->n_members; i++)
1593  {
1594  HeapTuple opertup = &catlist->members[i]->tuple;
1595  Form_pg_operator operform = (Form_pg_operator) GETSTRUCT(opertup);
1596  int pathpos = 0;
1597  FuncCandidateList newResult;
1598 
1599  /* Ignore operators of wrong kind, if specific kind requested */
1600  if (oprkind && operform->oprkind != oprkind)
1601  continue;
1602 
1603  if (OidIsValid(namespaceId))
1604  {
1605  /* Consider only opers in specified namespace */
1606  if (operform->oprnamespace != namespaceId)
1607  continue;
1608  /* No need to check args, they must all be different */
1609  }
1610  else
1611  {
1612  /*
1613  * Consider only opers that are in the search path and are not in
1614  * the temp namespace.
1615  */
1616  ListCell *nsp;
1617 
1618  foreach(nsp, activeSearchPath)
1619  {
1620  if (operform->oprnamespace == lfirst_oid(nsp) &&
1621  operform->oprnamespace != myTempNamespace)
1622  break;
1623  pathpos++;
1624  }
1625  if (nsp == NULL)
1626  continue; /* oper is not in search path */
1627 
1628  /*
1629  * Okay, it's in the search path, but does it have the same
1630  * arguments as something we already accepted? If so, keep only
1631  * the one that appears earlier in the search path.
1632  *
1633  * If we have an ordered list from SearchSysCacheList (the normal
1634  * case), then any conflicting oper must immediately adjoin this
1635  * one in the list, so we only need to look at the newest result
1636  * item. If we have an unordered list, we have to scan the whole
1637  * result list.
1638  */
1639  if (resultList)
1640  {
1641  FuncCandidateList prevResult;
1642 
1643  if (catlist->ordered)
1644  {
1645  if (operform->oprleft == resultList->args[0] &&
1646  operform->oprright == resultList->args[1])
1647  prevResult = resultList;
1648  else
1649  prevResult = NULL;
1650  }
1651  else
1652  {
1653  for (prevResult = resultList;
1654  prevResult;
1655  prevResult = prevResult->next)
1656  {
1657  if (operform->oprleft == prevResult->args[0] &&
1658  operform->oprright == prevResult->args[1])
1659  break;
1660  }
1661  }
1662  if (prevResult)
1663  {
1664  /* We have a match with a previous result */
1665  Assert(pathpos != prevResult->pathpos);
1666  if (pathpos > prevResult->pathpos)
1667  continue; /* keep previous result */
1668  /* replace previous result */
1669  prevResult->pathpos = pathpos;
1670  prevResult->oid = HeapTupleGetOid(opertup);
1671  continue; /* args are same, of course */
1672  }
1673  }
1674  }
1675 
1676  /*
1677  * Okay to add it to result list
1678  */
1679  newResult = (FuncCandidateList) (resultSpace + nextResult);
1680  nextResult += SPACE_PER_OP;
1681 
1682  newResult->pathpos = pathpos;
1683  newResult->oid = HeapTupleGetOid(opertup);
1684  newResult->nargs = 2;
1685  newResult->nvargs = 0;
1686  newResult->ndargs = 0;
1687  newResult->argnumbers = NULL;
1688  newResult->args[0] = operform->oprleft;
1689  newResult->args[1] = operform->oprright;
1690  newResult->next = resultList;
1691  resultList = newResult;
1692  }
1693 
1694  ReleaseSysCacheList(catlist);
1695 
1696  return resultList;
1697 }
int n_members
Definition: catcache.h:154
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
static Oid myTempNamespace
Definition: namespace.c:180
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
struct _FuncCandidateList * FuncCandidateList
CatCTup * members[FLEXIBLE_ARRAY_MEMBER]
Definition: catcache.h:155
Oid args[FLEXIBLE_ARRAY_MEMBER]
Definition: namespace.h:37
#define CStringGetDatum(X)
Definition: postgres.h:584
#define SearchSysCacheList1(cacheId, key1)
Definition: syscache.h:197
#define SPACE_PER_OP
struct _FuncCandidateList * next
Definition: namespace.h:30
#define ReleaseSysCacheList(x)
Definition: syscache.h:206
#define InvalidOid
Definition: postgres_ext.h:36
#define NULL
Definition: c.h:229
#define Assert(condition)
Definition: c.h:675
FormData_pg_operator* Form_pg_operator
Definition: pg_operator.h:57
static List * activeSearchPath
Definition: namespace.c:133
bool ordered
Definition: catcache.h:150
void * palloc(Size size)
Definition: mcxt.c:849
int i
HeapTupleData tuple
Definition: catcache.h:116
#define HeapTupleGetOid(tuple)
Definition: htup_details.h:695
#define lfirst_oid(lc)
Definition: pg_list.h:108
Oid OpernameGetOprid ( List names,
Oid  oprleft,
Oid  oprright 
)

Definition at line 1444 of file namespace.c.

References CStringGetDatum, DeconstructQualifiedName(), GETSTRUCT, HeapTupleGetOid, HeapTupleIsValid, i, InvalidOid, lfirst_oid, LookupExplicitNamespace(), catclist::members, myTempNamespace, catclist::n_members, ObjectIdGetDatum, OidIsValid, OPERNAMENSP, recomputeNamespacePath(), ReleaseSysCache(), ReleaseSysCacheList, result, SearchSysCache4, SearchSysCacheList3, and catctup::tuple.

Referenced by binary_oper_exact(), left_oper(), LookupOperName(), OperatorIsVisible(), regoperatorin(), right_oper(), and to_regoperator().

1445 {
1446  char *schemaname;
1447  char *opername;
1448  CatCList *catlist;
1449  ListCell *l;
1450 
1451  /* deconstruct the name list */
1452  DeconstructQualifiedName(names, &schemaname, &opername);
1453 
1454  if (schemaname)
1455  {
1456  /* search only in exact schema given */
1457  Oid namespaceId;
1458 
1459  namespaceId = LookupExplicitNamespace(schemaname, true);
1460  if (OidIsValid(namespaceId))
1461  {
1462  HeapTuple opertup;
1463 
1464  opertup = SearchSysCache4(OPERNAMENSP,
1465  CStringGetDatum(opername),
1466  ObjectIdGetDatum(oprleft),
1467  ObjectIdGetDatum(oprright),
1468  ObjectIdGetDatum(namespaceId));
1469  if (HeapTupleIsValid(opertup))
1470  {
1471  Oid result = HeapTupleGetOid(opertup);
1472 
1473  ReleaseSysCache(opertup);
1474  return result;
1475  }
1476  }
1477 
1478  return InvalidOid;
1479  }
1480 
1481  /* Search syscache by name and argument types */
1482  catlist = SearchSysCacheList3(OPERNAMENSP,
1483  CStringGetDatum(opername),
1484  ObjectIdGetDatum(oprleft),
1485  ObjectIdGetDatum(oprright));
1486 
1487  if (catlist->n_members == 0)
1488  {
1489  /* no hope, fall out early */
1490  ReleaseSysCacheList(catlist);
1491  return InvalidOid;
1492  }
1493 
1494  /*
1495  * We have to find the list member that is first in the search path, if
1496  * there's more than one. This doubly-nested loop looks ugly, but in
1497  * practice there should usually be few catlist members.
1498  */
1500 
1501  foreach(l, activeSearchPath)
1502  {
1503  Oid namespaceId = lfirst_oid(l);
1504  int i;
1505 
1506  if (namespaceId == myTempNamespace)
1507  continue; /* do not look in temp namespace */
1508 
1509  for (i = 0; i < catlist->n_members; i++)
1510  {
1511  HeapTuple opertup = &catlist->members[i]->tuple;
1512  Form_pg_operator operform = (Form_pg_operator) GETSTRUCT(opertup);
1513 
1514  if (operform->oprnamespace == namespaceId)
1515  {
1516  Oid result = HeapTupleGetOid(opertup);
1517 
1518  ReleaseSysCacheList(catlist);
1519  return result;
1520  }
1521  }
1522  }
1523 
1524  ReleaseSysCacheList(catlist);
1525  return InvalidOid;
1526 }
int n_members
Definition: catcache.h:154
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define SearchSysCache4(cacheId, key1, key2, key3, key4)
Definition: syscache.h:158
static Oid myTempNamespace
Definition: namespace.c:180
return result
Definition: formatting.c:1618
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
CatCTup * members[FLEXIBLE_ARRAY_MEMBER]
Definition: catcache.h:155
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define CStringGetDatum(X)
Definition: postgres.h:584
#define ReleaseSysCacheList(x)
Definition: syscache.h:206
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
#define InvalidOid
Definition: postgres_ext.h:36
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
FormData_pg_operator* Form_pg_operator
Definition: pg_operator.h:57
static List * activeSearchPath
Definition: namespace.c:133
#define SearchSysCacheList3(cacheId, key1, key2, key3)
Definition: syscache.h:201
int i
HeapTupleData tuple
Definition: catcache.h:116
#define HeapTupleGetOid(tuple)
Definition: htup_details.h:695
#define lfirst_oid(lc)
Definition: pg_list.h:108
bool OpfamilyIsVisible ( Oid  opfid)

Definition at line 1875 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().

1876 {
1877  HeapTuple opftup;
1878  Form_pg_opfamily opfform;
1879  Oid opfnamespace;
1880  bool visible;
1881 
1882  opftup = SearchSysCache1(OPFAMILYOID, ObjectIdGetDatum(opfid));
1883  if (!HeapTupleIsValid(opftup))
1884  elog(ERROR, "cache lookup failed for opfamily %u", opfid);
1885  opfform = (Form_pg_opfamily) GETSTRUCT(opftup);
1886 
1888 
1889  /*
1890  * Quick check: if it ain't in the path at all, it ain't visible. Items in
1891  * the system namespace are surely in the path and so we needn't even do
1892  * list_member_oid() for them.
1893  */
1894  opfnamespace = opfform->opfnamespace;
1895  if (opfnamespace != PG_CATALOG_NAMESPACE &&
1896  !list_member_oid(activeSearchPath, opfnamespace))
1897  visible = false;
1898  else
1899  {
1900  /*
1901  * If it is in the path, it might still not be visible; it could be
1902  * hidden by another opfamily of the same name earlier in the path. So
1903  * we must do a slow check to see if this opfamily would be found by
1904  * OpfamilynameGetOpfid.
1905  */
1906  char *opfname = NameStr(opfform->opfname);
1907 
1908  visible = (OpfamilynameGetOpfid(opfform->opfmethod, opfname) == opfid);
1909  }
1910 
1911  ReleaseSysCache(opftup);
1912 
1913  return visible;
1914 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
unsigned int Oid
Definition: postgres_ext.h:31
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
Oid OpfamilynameGetOpfid(Oid amid, const char *opfname)
Definition: namespace.c:1842
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
FormData_pg_opfamily * Form_pg_opfamily
Definition: pg_opfamily.h:44
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
Oid OpfamilynameGetOpfid ( Oid  amid,
const char *  opfname 
)

Definition at line 1842 of file namespace.c.

References GetSysCacheOid3, InvalidOid, lfirst_oid, myTempNamespace, ObjectIdGetDatum, OidIsValid, OPFAMILYAMNAMENSP, PointerGetDatum, and recomputeNamespacePath().

Referenced by OpFamilyCacheLookup(), and OpfamilyIsVisible().

1843 {
1844  Oid opfid;
1845  ListCell *l;
1846 
1848 
1849  foreach(l, activeSearchPath)
1850  {
1851  Oid namespaceId = lfirst_oid(l);
1852 
1853  if (namespaceId == myTempNamespace)
1854  continue; /* do not look in temp namespace */
1855 
1857  ObjectIdGetDatum(amid),
1858  PointerGetDatum(opfname),
1859  ObjectIdGetDatum(namespaceId));
1860  if (OidIsValid(opfid))
1861  return opfid;
1862  }
1863 
1864  /* Not found in path */
1865  return InvalidOid;
1866 }
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid3(cacheId, key1, key2, key3)
Definition: syscache.h:183
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
#define lfirst_oid(lc)
Definition: pg_list.h:108
bool OverrideSearchPathMatchesCurrent ( OverrideSearchPath path)

Definition at line 3223 of file namespace.c.

References activeCreationNamespace, OverrideSearchPath::addCatalog, OverrideSearchPath::addTemp, InvalidOid, lfirst_oid, list_head(), lnext, myTempNamespace, PG_CATALOG_NAMESPACE, recomputeNamespacePath(), and OverrideSearchPath::schemas.

Referenced by RevalidateCachedQuery().

3224 {
3225  ListCell *lc,
3226  *lcp;
3227 
3229 
3230  /* We scan down the activeSearchPath to see if it matches the input. */
3232 
3233  /* If path->addTemp, first item should be my temp namespace. */
3234  if (path->addTemp)
3235  {
3236  if (lc && lfirst_oid(lc) == myTempNamespace)
3237  lc = lnext(lc);
3238  else
3239  return false;
3240  }
3241  /* If path->addCatalog, next item should be pg_catalog. */
3242  if (path->addCatalog)
3243  {
3244  if (lc && lfirst_oid(lc) == PG_CATALOG_NAMESPACE)
3245  lc = lnext(lc);
3246  else
3247  return false;
3248  }
3249  /* We should now be looking at the activeCreationNamespace. */
3250  if (activeCreationNamespace != (lc ? lfirst_oid(lc) : InvalidOid))
3251  return false;
3252  /* The remainder of activeSearchPath should match path->schemas. */
3253  foreach(lcp, path->schemas)
3254  {
3255  if (lc && lfirst_oid(lc) == lfirst_oid(lcp))
3256  lc = lnext(lc);
3257  else
3258  return false;
3259  }
3260  if (lc)
3261  return false;
3262  return true;
3263 }
static Oid myTempNamespace
Definition: namespace.c:180
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
static Oid activeCreationNamespace
Definition: namespace.c:136
static ListCell * list_head(const List *l)
Definition: pg_list.h:77
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
#define lnext(lc)
Definition: pg_list.h:105
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
#define lfirst_oid(lc)
Definition: pg_list.h:108
void PopOverrideSearchPath ( void  )

Definition at line 3342 of file namespace.c.

References activeCreationNamespace, activeTempCreationPending, baseCreationNamespace, baseSearchPath, baseTempCreationPending, OverrideStackEntry::creationNamespace, elog, ERROR, GetCurrentTransactionNestLevel(), linitial, list_delete_first(), list_free(), OverrideStackEntry::nestLevel, NIL, pfree(), and OverrideStackEntry::searchPath.

Referenced by CreateSchemaCommand().

3343 {
3344  OverrideStackEntry *entry;
3345 
3346  /* Sanity checks. */
3347  if (overrideStack == NIL)
3348  elog(ERROR, "bogus PopOverrideSearchPath call");
3350  if (entry->nestLevel != GetCurrentTransactionNestLevel())
3351  elog(ERROR, "bogus PopOverrideSearchPath call");
3352 
3353  /* Pop the stack and free storage. */
3355  list_free(entry->searchPath);
3356  pfree(entry);
3357 
3358  /* Activate the next level down. */
3359  if (overrideStack)
3360  {
3362  activeSearchPath = entry->searchPath;
3364  activeTempCreationPending = false; /* XXX is this OK? */
3365  }
3366  else
3367  {
3368  /* If not baseSearchPathValid, this is useless but harmless */
3372  }
3373 }
#define NIL
Definition: pg_list.h:69
static List * overrideStack
Definition: namespace.c:163
static Oid activeCreationNamespace
Definition: namespace.c:136
void pfree(void *pointer)
Definition: mcxt.c:950
#define linitial(l)
Definition: pg_list.h:110
#define ERROR
Definition: elog.h:43
static bool baseTempCreationPending
Definition: namespace.c:147
static bool activeTempCreationPending
Definition: namespace.c:139
static Oid baseCreationNamespace
Definition: namespace.c:145
static List * baseSearchPath
Definition: namespace.c:143
int GetCurrentTransactionNestLevel(void)
Definition: xact.c:761
static List * activeSearchPath
Definition: namespace.c:133
void list_free(List *list)
Definition: list.c:1133
#define elog
Definition: elog.h:219
List * list_delete_first(List *list)
Definition: list.c:666
void PushOverrideSearchPath ( OverrideSearchPath newpath)

Definition at line 3283 of file namespace.c.

References activeCreationNamespace, activeTempCreationPending, OverrideSearchPath::addCatalog, OverrideSearchPath::addTemp, OverrideStackEntry::creationNamespace, GetCurrentTransactionNestLevel(), InvalidOid, 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().

3284 {
3285  OverrideStackEntry *entry;
3286  List *oidlist;
3287  Oid firstNS;
3288  MemoryContext oldcxt;
3289 
3290  /*
3291  * Copy the list for safekeeping, and insert implicitly-searched
3292  * namespaces as needed. This code should track recomputeNamespacePath.
3293  */
3295 
3296  oidlist = list_copy(newpath->schemas);
3297 
3298  /*
3299  * Remember the first member of the explicit list.
3300  */
3301  if (oidlist == NIL)
3302  firstNS = InvalidOid;
3303  else
3304  firstNS = linitial_oid(oidlist);
3305 
3306  /*
3307  * Add any implicitly-searched namespaces to the list. Note these go on
3308  * the front, not the back; also notice that we do not check USAGE
3309  * permissions for these.
3310  */
3311  if (newpath->addCatalog)
3312  oidlist = lcons_oid(PG_CATALOG_NAMESPACE, oidlist);
3313 
3314  if (newpath->addTemp && OidIsValid(myTempNamespace))
3315  oidlist = lcons_oid(myTempNamespace, oidlist);
3316 
3317  /*
3318  * Build the new stack entry, then insert it at the head of the list.
3319  */
3320  entry = (OverrideStackEntry *) palloc(sizeof(OverrideStackEntry));
3321  entry->searchPath = oidlist;
3322  entry->creationNamespace = firstNS;
3324 
3325  overrideStack = lcons(entry, overrideStack);
3326 
3327  /* And make it active. */
3328  activeSearchPath = entry->searchPath;
3330  activeTempCreationPending = false; /* XXX is this OK? */
3331 
3332  MemoryContextSwitchTo(oldcxt);
3333 }
#define NIL
Definition: pg_list.h:69
static Oid myTempNamespace
Definition: namespace.c:180
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:109
static List * overrideStack
Definition: namespace.c:163
List * list_copy(const List *oldlist)
Definition: list.c:1160
List * lcons_oid(Oid datum, List *list)
Definition: list.c:295
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
static Oid activeCreationNamespace
Definition: namespace.c:136
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
static bool activeTempCreationPending
Definition: namespace.c:139
MemoryContext TopMemoryContext
Definition: mcxt.c:43
#define InvalidOid
Definition: postgres_ext.h:36
int GetCurrentTransactionNestLevel(void)
Definition: xact.c:761
List * lcons(void *datum, List *list)
Definition: list.c:259
#define linitial_oid(l)
Definition: pg_list.h:112
static List * activeSearchPath
Definition: namespace.c:133
void * palloc(Size size)
Definition: mcxt.c:849
Definition: pg_list.h:45
Oid QualifiedNameGetCreationNamespace ( List names,
char **  objname_p 
)

Definition at line 2846 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(), CreateStatistics(), DefineAggregate(), DefineCollation(), DefineDomain(), DefineEnum(), DefineOpClass(), DefineOperator(), DefineOpFamily(), DefineRange(), DefineTSConfiguration(), DefineTSDictionary(), DefineTSParser(), DefineTSTemplate(), DefineType(), and get_other_operator().

2847 {
2848  char *schemaname;
2849  Oid namespaceId;
2850 
2851  /* deconstruct the name list */
2852  DeconstructQualifiedName(names, &schemaname, objname_p);
2853 
2854  if (schemaname)
2855  {
2856  /* check for pg_temp alias */
2857  if (strcmp(schemaname, "pg_temp") == 0)
2858  {
2859  /* Initialize temp namespace if first time through */
2862  return myTempNamespace;
2863  }
2864  /* use exact schema given */
2865  namespaceId = get_namespace_oid(schemaname, false);
2866  /* we do not check for USAGE rights here! */
2867  }
2868  else
2869  {
2870  /* use the default creation namespace */
2873  {
2874  /* Need to initialize temp namespace */
2876  return myTempNamespace;
2877  }
2878  namespaceId = activeCreationNamespace;
2879  if (!OidIsValid(namespaceId))
2880  ereport(ERROR,
2881  (errcode(ERRCODE_UNDEFINED_SCHEMA),
2882  errmsg("no schema has been selected to create in")));
2883  }
2884 
2885  return namespaceId;
2886 }
Oid get_namespace_oid(const char *nspname, bool missing_ok)
Definition: namespace.c:2895
static Oid myTempNamespace
Definition: namespace.c:180
int errcode(int sqlerrcode)
Definition: elog.c:575
void DeconstructQualifiedName(List *names, char **nspname_p, char **objname_p)
Definition: namespace.c:2659
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
static Oid activeCreationNamespace
Definition: namespace.c:136
#define ERROR
Definition: elog.h:43
static bool activeTempCreationPending
Definition: namespace.c:139
#define ereport(elevel, rest)
Definition: elog.h:122
static void InitTempTableNamespace(void)
Definition: namespace.c:3685
int errmsg(const char *fmt,...)
Definition: elog.c:797
void RangeVarAdjustRelationPersistence ( RangeVar newRelation,
Oid  nspid 
)

Definition at line 614 of file namespace.c.

References ereport, errcode(), errmsg(), ERROR, isAnyTempNamespace(), isTempOrTempToastNamespace(), RangeVar::relpersistence, RELPERSISTENCE_PERMANENT, and RELPERSISTENCE_TEMP.

Referenced by DefineCompositeType(), RangeVarGetAndCheckCreationNamespace(), and transformColumnDefinition().

615 {
616  switch (newRelation->relpersistence)
617  {
618  case RELPERSISTENCE_TEMP:
619  if (!isTempOrTempToastNamespace(nspid))
620  {
621  if (isAnyTempNamespace(nspid))
622  ereport(ERROR,
623  (errcode(ERRCODE_INVALID_TABLE_DEFINITION),
624  errmsg("cannot create relations in temporary schemas of other sessions")));
625  else
626  ereport(ERROR,
627  (errcode(ERRCODE_INVALID_TABLE_DEFINITION),
628  errmsg("cannot create temporary relation in non-temporary schema")));
629  }
630  break;
632  if (isTempOrTempToastNamespace(nspid))
633  newRelation->relpersistence = RELPERSISTENCE_TEMP;
634  else if (isAnyTempNamespace(nspid))
635  ereport(ERROR,
636  (errcode(ERRCODE_INVALID_TABLE_DEFINITION),
637  errmsg("cannot create relations in temporary schemas of other sessions")));
638  break;
639  default:
640  if (isAnyTempNamespace(nspid))
641  ereport(ERROR,
642  (errcode(ERRCODE_INVALID_TABLE_DEFINITION),
643  errmsg("only temporary relations may be created in temporary schemas")));
644  }
645 }
bool isTempOrTempToastNamespace(Oid namespaceId)
Definition: namespace.c:3032
int errcode(int sqlerrcode)
Definition: elog.c:575
#define RELPERSISTENCE_PERMANENT
Definition: pg_class.h:170
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
char relpersistence
Definition: primnodes.h:71
int errmsg(const char *fmt,...)
Definition: elog.c:797
bool isAnyTempNamespace(Oid namespaceId)
Definition: namespace.c:3046
#define RELPERSISTENCE_TEMP
Definition: pg_class.h:172
Oid RangeVarGetAndCheckCreationNamespace ( RangeVar newRelation,
LOCKMODE  lockmode,
Oid existing_relation_id 
)

Definition at line 507 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(), InvalidOid, 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(), DefineSequence(), DefineVirtualRelation(), and transformCreateStmt().

510 {
511  uint64 inval_count;
512  Oid relid;
513  Oid oldrelid = InvalidOid;
514  Oid nspid;
515  Oid oldnspid = InvalidOid;
516  bool retry = false;
517 
518  /*
519  * We check the catalog name and then ignore it.
520  */
521  if (relation->catalogname)
522  {
523  if (strcmp(relation->catalogname, get_database_name(MyDatabaseId)) != 0)
524  ereport(ERROR,
525  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
526  errmsg("cross-database references are not implemented: \"%s.%s.%s\"",
527  relation->catalogname, relation->schemaname,
528  relation->relname)));
529  }
530 
531  /*
532  * As in RangeVarGetRelidExtended(), we guard against concurrent DDL
533  * operations by tracking whether any invalidation messages are processed
534  * while we're doing the name lookups and acquiring locks. See comments
535  * in that function for a more detailed explanation of this logic.
536  */
537  for (;;)
538  {
539  AclResult aclresult;
540 
541  inval_count = SharedInvalidMessageCounter;
542 
543  /* Look up creation namespace and check for existing relation. */
544  nspid = RangeVarGetCreationNamespace(relation);
545  Assert(OidIsValid(nspid));
546  if (existing_relation_id != NULL)
547  relid = get_relname_relid(relation->relname, nspid);
548  else
549  relid = InvalidOid;
550 
551  /*
552  * In bootstrap processing mode, we don't bother with permissions or
553  * locking. Permissions might not be working yet, and locking is
554  * unnecessary.
555  */
557  break;
558 
559  /* Check namespace permissions. */
560  aclresult = pg_namespace_aclcheck(nspid, GetUserId(), ACL_CREATE);
561  if (aclresult != ACLCHECK_OK)
563  get_namespace_name(nspid));
564 
565  if (retry)
566  {
567  /* If nothing changed, we're done. */
568  if (relid == oldrelid && nspid == oldnspid)
569  break;
570  /* If creation namespace has changed, give up old lock. */
571  if (nspid != oldnspid)
574  /* If name points to something different, give up old lock. */
575  if (relid != oldrelid && OidIsValid(oldrelid) && lockmode != NoLock)
576  UnlockRelationOid(oldrelid, lockmode);
577  }
578 
579  /* Lock namespace. */
580  if (nspid != oldnspid)
582 
583  /* Lock relation, if required if and we have permission. */
584  if (lockmode != NoLock && OidIsValid(relid))
585  {
586  if (!pg_class_ownercheck(relid, GetUserId()))
588  relation->relname);
589  if (relid != oldrelid)
590  LockRelationOid(relid, lockmode);
591  }
592 
593  /* If no invalidation message were processed, we're done! */
594  if (inval_count == SharedInvalidMessageCounter)
595  break;
596 
597  /* Something may have changed, so recheck our work. */
598  retry = true;
599  oldrelid = relid;
600  oldnspid = nspid;
601  }
602 
603  RangeVarAdjustRelationPersistence(relation, nspid);
604  if (existing_relation_id != NULL)
605  *existing_relation_id = relid;
606  return nspid;
607 }
#define NamespaceRelationId
Definition: pg_namespace.h:34
Oid GetUserId(void)
Definition: miscinit.c:283
void UnlockRelationOid(Oid relid, LOCKMODE lockmode)
Definition: lmgr.c:182
#define AccessShareLock
Definition: lockdefs.h:36
int errcode(int sqlerrcode)
Definition: elog.c:575
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
AclResult pg_namespace_aclcheck(Oid nsp_oid, Oid roleid, AclMode mode)
Definition: aclchk.c:4484
void RangeVarAdjustRelationPersistence(RangeVar *newRelation, Oid nspid)
Definition: namespace.c:614
#define ERROR
Definition: elog.h:43
#define ACL_CREATE
Definition: parsenodes.h:75
Oid get_relname_relid(const char *relname, Oid relnamespace)
Definition: lsyscache.c:1651
char * get_database_name(Oid dbid)
Definition: dbcommands.c:2056
char * get_namespace_name(Oid nspid)
Definition: lsyscache.c:3006
#define NoLock
Definition: lockdefs.h:34
void aclcheck_error(AclResult aclerr, AclObjectKind objectkind, const char *objectname)
Definition: aclchk.c:3399
void LockDatabaseObject(Oid classid, Oid objid, uint16 objsubid, LOCKMODE lockmode)
Definition: lmgr.c:830
#define ereport(elevel, rest)
Definition: elog.h:122
void UnlockDatabaseObject(Oid classid, Oid objid, uint16 objsubid, LOCKMODE lockmode)
Definition: lmgr.c:851
AclResult
Definition: acl.h:170
Oid MyDatabaseId
Definition: globals.c:76
uint64 SharedInvalidMessageCounter
Definition: sinval.c:26
#define InvalidOid
Definition: postgres_ext.h:36
#define NULL
Definition: c.h:229
#define Assert(condition)
Definition: c.h:675
bool pg_class_ownercheck(Oid class_oid, Oid roleid)
Definition: aclchk.c:4546
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:365
int errmsg(const char *fmt,...)
Definition: elog.c:797
void LockRelationOid(Oid relid, LOCKMODE lockmode)
Definition: lmgr.c:105
Oid RangeVarGetCreationNamespace(const RangeVar *newRelation)
Definition: namespace.c:420
Oid RangeVarGetCreationNamespace ( const RangeVar newRelation)

Definition at line 420 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 ExecCreateTableAs(), RangeVarGetAndCheckCreationNamespace(), and transformColumnDefinition().

421 {
422  Oid namespaceId;
423 
424  /*
425  * We check the catalog name and then ignore it.
426  */
427  if (newRelation->catalogname)
428  {
429  if (strcmp(newRelation->catalogname, get_database_name(MyDatabaseId)) != 0)
430  ereport(ERROR,
431  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
432  errmsg("cross-database references are not implemented: \"%s.%s.%s\"",
433  newRelation->catalogname, newRelation->schemaname,
434  newRelation->relname)));
435  }
436 
437  if (newRelation->schemaname)
438  {
439  /* check for pg_temp alias */
440  if (strcmp(newRelation->schemaname, "pg_temp") == 0)
441  {
442  /* Initialize temp namespace if first time through */
445  return myTempNamespace;
446  }
447  /* use exact schema given */
448  namespaceId = get_namespace_oid(newRelation->schemaname, false);
449  /* we do not check for USAGE rights here! */
450  }
451  else if (newRelation->relpersistence == RELPERSISTENCE_TEMP)
452  {
453  /* Initialize temp namespace if first time through */
456  return myTempNamespace;
457  }
458  else
459  {
460  /* use the default creation namespace */
463  {
464  /* Need to initialize temp namespace */
466  return myTempNamespace;
467  }
468  namespaceId = activeCreationNamespace;
469  if (!OidIsValid(namespaceId))
470  ereport(ERROR,
471  (errcode(ERRCODE_UNDEFINED_SCHEMA),
472  errmsg("no schema has been selected to create in")));
473  }
474 
475  /* Note: callers will check for CREATE rights when appropriate */
476 
477  return namespaceId;
478 }
Oid get_namespace_oid(const char *nspname, bool missing_ok)
Definition: namespace.c:2895
static Oid myTempNamespace
Definition: namespace.c:180
int errcode(int sqlerrcode)
Definition: elog.c:575
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
char * schemaname
Definition: primnodes.h:67
char * relname
Definition: primnodes.h:68
static Oid activeCreationNamespace
Definition: namespace.c:136
#define ERROR
Definition: elog.h:43
char * get_database_name(Oid dbid)
Definition: dbcommands.c:2056
static bool activeTempCreationPending
Definition: namespace.c:139
#define ereport(elevel, rest)
Definition: elog.h:122
static void InitTempTableNamespace(void)
Definition: namespace.c:3685
Oid MyDatabaseId
Definition: globals.c:76
char relpersistence
Definition: primnodes.h:71
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define RELPERSISTENCE_TEMP
Definition: pg_class.h:172
char * catalogname
Definition: primnodes.h:66
Oid RangeVarGetRelidExtended ( const RangeVar relation,
LOCKMODE  lockmode,
bool  missing_ok,
bool  nowait,
RangeVarGetRelidCallback  callback,
void *  callback_arg 
)

Definition at line 217 of file namespace.c.

References AcceptInvalidationMessages(), callback(), RangeVar::catalogname, ConditionalLockRelationOid(), ereport, errcode(), ERRCODE_UNDEFINED_TABLE, errmsg(), ERROR, get_database_name(), get_relname_relid(), InvalidOid, LockRelationOid(), LookupExplicitNamespace(), MyDatabaseId, myTempNamespace, NoLock, OidIsValid, RangeVar::relname, RelnameGetRelid(), RangeVar::relpersistence, RELPERSISTENCE_TEMP, RangeVar::schemaname, SharedInvalidMessageCounter, and UnlockRelationOid().

Referenced by AlterPolicy(), AlterTableLookupRelation(), AlterTableNamespace(), cluster(), CreatePolicy(), ExecRefreshMatView(), LockTableCommand(), ProcessUtilitySlow(), ReindexIndex(), ReindexTable(), RemoveRelations(), rename_policy(), renameatt(), RenameConstraint(), RenameRelation(), RenameRewriteRule(), and renametrig().

220 {
221  uint64 inval_count;
222  Oid relId;
223  Oid oldRelId = InvalidOid;
224  bool retry = false;
225 
226  /*
227  * We check the catalog name and then ignore it.
228  */
229  if (relation->catalogname)
230  {
231  if (strcmp(relation->catalogname, get_database_name(MyDatabaseId)) != 0)
232  ereport(ERROR,
233  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
234  errmsg("cross-database references are not implemented: \"%s.%s.%s\"",
235  relation->catalogname, relation->schemaname,
236  relation->relname)));
237  }
238 
239  /*
240  * DDL operations can change the results of a name lookup. Since all such
241  * operations will generate invalidation messages, we keep track of
242  * whether any such messages show up while we're performing the operation,
243  * and retry until either (1) no more invalidation messages show up or (2)
244  * the answer doesn't change.
245  *
246  * But if lockmode = NoLock, then we assume that either the caller is OK
247  * with the answer changing under them, or that they already hold some
248  * appropriate lock, and therefore return the first answer we get without
249  * checking for invalidation messages. Also, if the requested lock is
250  * already held, LockRelationOid will not AcceptInvalidationMessages, so
251  * we may fail to notice a change. We could protect against that case by
252  * calling AcceptInvalidationMessages() before beginning this loop, but
253  * that would add a significant amount overhead, so for now we don't.
254  */
255  for (;;)
256  {
257  /*
258  * Remember this value, so that, after looking up the relation name
259  * and locking its OID, we can check whether any invalidation messages
260  * have been processed that might require a do-over.
261  */
262  inval_count = SharedInvalidMessageCounter;
263 
264  /*
265  * Some non-default relpersistence value may have been specified. The
266  * parser never generates such a RangeVar in simple DML, but it can
267  * happen in contexts such as "CREATE TEMP TABLE foo (f1 int PRIMARY
268  * KEY)". Such a command will generate an added CREATE INDEX
269  * operation, which must be careful to find the temp table, even when
270  * pg_temp is not first in the search path.
271  */
272  if (relation->relpersistence == RELPERSISTENCE_TEMP)
273  {
275  relId = InvalidOid; /* this probably can't happen? */
276  else
277  {
278  if (relation->schemaname)
279  {
280  Oid namespaceId;
281 
282  namespaceId = LookupExplicitNamespace(relation->schemaname, missing_ok);
283 
284  /*
285  * For missing_ok, allow a non-existent schema name to
286  * return InvalidOid.
287  */
288  if (namespaceId != myTempNamespace)
289  ereport(ERROR,
290  (errcode(ERRCODE_INVALID_TABLE_DEFINITION),
291  errmsg("temporary tables cannot specify a schema name")));
292  }
293 
294  relId = get_relname_relid(relation->relname, myTempNamespace);
295  }
296  }
297  else if (relation->schemaname)
298  {
299  Oid namespaceId;
300 
301  /* use exact schema given */
302  namespaceId = LookupExplicitNamespace(relation->schemaname, missing_ok);
303  if (missing_ok && !OidIsValid(namespaceId))
304  relId = InvalidOid;
305  else
306  relId = get_relname_relid(relation->relname, namespaceId);
307  }
308  else
309  {
310  /* search the namespace path */
311  relId = RelnameGetRelid(relation->relname);
312  }
313 
314  /*
315  * Invoke caller-supplied callback, if any.
316  *
317  * This callback is a good place to check permissions: we haven't
318  * taken the table lock yet (and it's really best to check permissions
319  * before locking anything!), but we've gotten far enough to know what
320  * OID we think we should lock. Of course, concurrent DDL might
321  * change things while we're waiting for the lock, but in that case
322  * the callback will be invoked again for the new OID.
323  */
324  if (callback)
325  callback(relation, relId, oldRelId, callback_arg);
326 
327  /*
328  * If no lock requested, we assume the caller knows what they're
329  * doing. They should have already acquired a heavyweight lock on
330  * this relation earlier in the processing of this same statement, so
331  * it wouldn't be appropriate to AcceptInvalidationMessages() here, as
332  * that might pull the rug out from under them.
333  */
334  if (lockmode == NoLock)
335  break;
336 
337  /*
338  * If, upon retry, we get back the same OID we did last time, then the
339  * invalidation messages we processed did not change the final answer.
340  * So we're done.
341  *
342  * If we got a different OID, we've locked the relation that used to
343  * have this name rather than the one that does now. So release the
344  * lock.
345  */
346  if (retry)
347  {
348  if (relId == oldRelId)
349  break;
350  if (OidIsValid(oldRelId))
351  UnlockRelationOid(oldRelId, lockmode);
352  }
353 
354  /*
355  * Lock relation. This will also accept any pending invalidation
356  * messages. If we got back InvalidOid, indicating not found, then
357  * there's nothing to lock, but we accept invalidation messages
358  * anyway, to flush any negative catcache entries that may be
359  * lingering.
360  */
361  if (!OidIsValid(relId))
363  else if (!nowait)
364  LockRelationOid(relId, lockmode);
365  else if (!ConditionalLockRelationOid(relId, lockmode))
366  {
367  if (relation->schemaname)
368  ereport(ERROR,
369  (errcode(ERRCODE_LOCK_NOT_AVAILABLE),
370  errmsg("could not obtain lock on relation \"%s.%s\"",
371  relation->schemaname, relation->relname)));
372  else
373  ereport(ERROR,
374  (errcode(ERRCODE_LOCK_NOT_AVAILABLE),
375  errmsg("could not obtain lock on relation \"%s\"",
376  relation->relname)));
377  }
378 
379  /*
380  * If no invalidation message were processed, we're done!
381  */
382  if (inval_count == SharedInvalidMessageCounter)
383  break;
384 
385  /*
386  * Something may have changed. Let's repeat the name lookup, to make
387  * sure this name still references the same relation it did
388  * previously.
389  */
390  retry = true;
391  oldRelId = relId;
392  }
393 
394  if (!OidIsValid(relId) && !missing_ok)
395  {
396  if (relation->schemaname)
397  ereport(ERROR,
399  errmsg("relation \"%s.%s\" does not exist",
400  relation->schemaname, relation->relname)));
401  else
402  ereport(ERROR,
404  errmsg("relation \"%s\" does not exist",
405  relation->relname)));
406  }
407  return relId;
408 }
bool ConditionalLockRelationOid(Oid relid, LOCKMODE lockmode)
Definition: lmgr.c:138
Oid LookupExplicitNamespace(const char *nspname, bool missing_ok)
Definition: namespace.c:2743
#define ERRCODE_UNDEFINED_TABLE
Definition: pgbench.c:61
void AcceptInvalidationMessages(void)
Definition: inval.c:672
void UnlockRelationOid(Oid relid, LOCKMODE lockmode)
Definition: lmgr.c:182
Oid RelnameGetRelid(const char *relname)
Definition: namespace.c:653
static Oid myTempNamespace
Definition: namespace.c:180
int errcode(int sqlerrcode)
Definition: elog.c:575
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
char * schemaname
Definition: primnodes.h:67
char * relname
Definition: primnodes.h:68
#define ERROR
Definition: elog.h:43
static void callback(struct sockaddr *addr, struct sockaddr *mask, void *unused)
Definition: test_ifaddrs.c:48
Oid get_relname_relid(const char *relname, Oid relnamespace)
Definition: lsyscache.c:1651
char * get_database_name(Oid dbid)
Definition: dbcommands.c:2056
#define NoLock
Definition: lockdefs.h:34
#define ereport(elevel, rest)
Definition: elog.h:122
Oid MyDatabaseId
Definition: globals.c:76
uint64 SharedInvalidMessageCounter
Definition: sinval.c:26
#define InvalidOid
Definition: postgres_ext.h:36
char relpersistence
Definition: primnodes.h:71
int errmsg(const char *fmt,...)
Definition: elog.c:797
void LockRelationOid(Oid relid, LOCKMODE lockmode)
Definition: lmgr.c:105
#define RELPERSISTENCE_TEMP
Definition: pg_class.h:172
char * catalogname
Definition: primnodes.h:66
bool RelationIsVisible ( Oid  relid)

Definition at line 681 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().

682 {
683  HeapTuple reltup;
684  Form_pg_class relform;
685  Oid relnamespace;
686  bool visible;
687 
688  reltup = SearchSysCache1(RELOID, ObjectIdGetDatum(relid));
689  if (!HeapTupleIsValid(reltup))
690  elog(ERROR, "cache lookup failed for relation %u", relid);
691  relform = (Form_pg_class) GETSTRUCT(reltup);
692 
694 
695  /*
696  * Quick check: if it ain't in the path at all, it ain't visible. Items in
697  * the system namespace are surely in the path and so we needn't even do
698  * list_member_oid() for them.
699  */
700  relnamespace = relform->relnamespace;
701  if (relnamespace != PG_CATALOG_NAMESPACE &&
702  !list_member_oid(activeSearchPath, relnamespace))
703  visible = false;
704  else
705  {
706  /*
707  * If it is in the path, it might still not be visible; it could be
708  * hidden by another relation of the same name earlier in the path. So
709  * we must do a slow check for conflicting relations.
710  */
711  char *relname = NameStr(relform->relname);
712  ListCell *l;
713 
714  visible = false;
715  foreach(l, activeSearchPath)
716  {
717  Oid namespaceId = lfirst_oid(l);
718 
719  if (namespaceId == relnamespace)
720  {
721  /* Found it first in path */
722  visible = true;
723  break;
724  }
725  if (OidIsValid(get_relname_relid(relname, namespaceId)))
726  {
727  /* Found something else first in path */
728  break;
729  }
730  }
731  }
732 
733  ReleaseSysCache(reltup);
734 
735  return visible;
736 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
Oid get_relname_relid(const char *relname, Oid relnamespace)
Definition: lsyscache.c:1651
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
FormData_pg_class * Form_pg_class
Definition: pg_class.h:95
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
#define lfirst_oid(lc)
Definition: pg_list.h:108
Oid RelnameGetRelid ( const char *  relname)

Definition at line 653 of file namespace.c.

References get_relname_relid(), InvalidOid, lfirst_oid, OidIsValid, and recomputeNamespacePath().

Referenced by plpgsql_parse_cwordtype(), plpgsql_parse_wordrowtype(), and RangeVarGetRelidExtended().

654 {
655  Oid relid;
656  ListCell *l;
657 
659 
660  foreach(l, activeSearchPath)
661  {
662  Oid namespaceId = lfirst_oid(l);
663 
664  relid = get_relname_relid(relname, namespaceId);
665  if (OidIsValid(relid))
666  return relid;
667  }
668 
669  /* Not found in path */
670  return InvalidOid;
671 }
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
Oid get_relname_relid(const char *relname, Oid relnamespace)
Definition: lsyscache.c:1651
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
#define lfirst_oid(lc)
Definition: pg_list.h:108
void ResetTempTableNamespace ( void  )

Definition at line 3953 of file namespace.c.

References myTempNamespace, OidIsValid, and RemoveTempRelations().

Referenced by DiscardAll(), and DiscardCommand().

3954 {
3957 }
static Oid myTempNamespace
Definition: namespace.c:180
#define OidIsValid(objectId)
Definition: c.h:538
static void RemoveTempRelations(Oid tempNamespaceId)
Definition: namespace.c:3909
void SetTempNamespaceState ( Oid  tempNamespaceId,
Oid  tempToastNamespaceId 
)

Definition at line 3140 of file namespace.c.

References Assert, baseSearchPathValid, InvalidOid, InvalidSubTransactionId, myTempNamespace, myTempNamespaceSubID, and myTempToastNamespace.

Referenced by ParallelWorkerMain().

3141 {
3142  /* Worker should not have created its own namespaces ... */
3146 
3147  /* Assign same namespace OIDs that leader has */
3148  myTempNamespace = tempNamespaceId;
3149  myTempToastNamespace = tempToastNamespaceId;
3150 
3151  /*
3152  * It's fine to leave myTempNamespaceSubID == InvalidSubTransactionId.
3153  * Even if the namespace is new so far as the leader is concerned, it's
3154  * not new to the worker, and we certainly wouldn't want the worker trying
3155  * to destroy it.
3156  */
3157 
3158  baseSearchPathValid = false; /* may need to rebuild list */
3159 }
static bool baseSearchPathValid
Definition: namespace.c:152
static Oid myTempToastNamespace
Definition: namespace.c:182
static Oid myTempNamespace
Definition: namespace.c:180
static SubTransactionId myTempNamespaceSubID
Definition: namespace.c:184
#define InvalidOid
Definition: postgres_ext.h:36
#define Assert(condition)
Definition: c.h:675
#define InvalidSubTransactionId
Definition: c.h:403
bool TSConfigIsVisible ( Oid  cfgid)

Definition at line 2587 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().

2588 {
2589  HeapTuple tup;
2590  Form_pg_ts_config form;
2591  Oid namespace;
2592  bool visible;
2593 
2595  if (!HeapTupleIsValid(tup))
2596  elog(ERROR, "cache lookup failed for text search configuration %u",
2597  cfgid);
2598  form = (Form_pg_ts_config) GETSTRUCT(tup);
2599 
2601 
2602  /*
2603  * Quick check: if it ain't in the path at all, it ain't visible. Items in
2604  * the system namespace are surely in the path and so we needn't even do
2605  * list_member_oid() for them.
2606  */
2607  namespace = form->cfgnamespace;
2608  if (namespace != PG_CATALOG_NAMESPACE &&
2609  !list_member_oid(activeSearchPath, namespace))
2610  visible = false;
2611  else
2612  {
2613  /*
2614  * If it is in the path, it might still not be visible; it could be
2615  * hidden by another configuration of the same name earlier in the
2616  * path. So we must do a slow check for conflicting configurations.
2617  */
2618  char *name = NameStr(form->cfgname);
2619  ListCell *l;
2620 
2621  visible = false;
2622  foreach(l, activeSearchPath)
2623  {
2624  Oid namespaceId = lfirst_oid(l);
2625 
2626  if (namespaceId == myTempNamespace)
2627  continue; /* do not look in temp namespace */
2628 
2629  if (namespaceId == namespace)
2630  {
2631  /* Found it first in path */
2632  visible = true;
2633  break;
2634  }
2636  PointerGetDatum(name),
2637  ObjectIdGetDatum(namespaceId)))
2638  {
2639  /* Found something else first in path */
2640  break;
2641  }
2642  }
2643  }
2644 
2645  ReleaseSysCache(tup);
2646 
2647  return visible;
2648 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
FormData_pg_ts_config * Form_pg_ts_config
Definition: pg_ts_config.h:41
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define SearchSysCacheExists2(cacheId, key1, key2)
Definition: syscache.h:172
const char * name
Definition: encode.c:521
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
#define lfirst_oid(lc)
Definition: pg_list.h:108
bool TSDictionaryIsVisible ( Oid  dictId)

Definition at line 2334 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().

2335 {
2336  HeapTuple tup;
2337  Form_pg_ts_dict form;
2338  Oid namespace;
2339  bool visible;
2340 
2341  tup = SearchSysCache1(TSDICTOID, ObjectIdGetDatum(dictId));
2342  if (!HeapTupleIsValid(tup))
2343  elog(ERROR, "cache lookup failed for text search dictionary %u",
2344  dictId);
2345  form = (Form_pg_ts_dict) GETSTRUCT(tup);
2346 
2348 
2349  /*
2350  * Quick check: if it ain't in the path at all, it ain't visible. Items in
2351  * the system namespace are surely in the path and so we needn't even do
2352  * list_member_oid() for them.
2353  */
2354  namespace = form->dictnamespace;
2355  if (namespace != PG_CATALOG_NAMESPACE &&
2356  !list_member_oid(activeSearchPath, namespace))
2357  visible = false;
2358  else
2359  {
2360  /*
2361  * If it is in the path, it might still not be visible; it could be
2362  * hidden by another dictionary of the same name earlier in the path.
2363  * So we must do a slow check for conflicting dictionaries.
2364  */
2365  char *name = NameStr(form->dictname);
2366  ListCell *l;
2367 
2368  visible = false;
2369  foreach(l, activeSearchPath)
2370  {
2371  Oid namespaceId = lfirst_oid(l);
2372 
2373  if (namespaceId == myTempNamespace)
2374  continue; /* do not look in temp namespace */
2375 
2376  if (namespaceId == namespace)
2377  {
2378  /* Found it first in path */
2379  visible = true;
2380  break;
2381  }
2383  PointerGetDatum(name),
2384  ObjectIdGetDatum(namespaceId)))
2385  {
2386  /* Found something else first in path */
2387  break;
2388  }
2389  }
2390  }
2391 
2392  ReleaseSysCache(tup);
2393 
2394  return visible;
2395 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
FormData_pg_ts_dict * Form_pg_ts_dict
Definition: pg_ts_dict.h:45
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define SearchSysCacheExists2(cacheId, key1, key2)
Definition: syscache.h:172
const char * name
Definition: encode.c:521
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
#define lfirst_oid(lc)
Definition: pg_list.h:108
bool TSParserIsVisible ( Oid  prsId)

Definition at line 2208 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().

2209 {
2210  HeapTuple tup;
2211  Form_pg_ts_parser form;
2212  Oid namespace;
2213  bool visible;
2214 
2216  if (!HeapTupleIsValid(tup))
2217  elog(ERROR, "cache lookup failed for text search parser %u", prsId);
2218  form = (Form_pg_ts_parser) GETSTRUCT(tup);
2219 
2221 
2222  /*
2223  * Quick check: if it ain't in the path at all, it ain't visible. Items in
2224  * the system namespace are surely in the path and so we needn't even do
2225  * list_member_oid() for them.
2226  */
2227  namespace = form->prsnamespace;
2228  if (namespace != PG_CATALOG_NAMESPACE &&
2229  !list_member_oid(activeSearchPath, namespace))
2230  visible = false;
2231  else
2232  {
2233  /*
2234  * If it is in the path, it might still not be visible; it could be
2235  * hidden by another parser of the same name earlier in the path. So
2236  * we must do a slow check for conflicting parsers.
2237  */
2238  char *name = NameStr(form->prsname);
2239  ListCell *l;
2240 
2241  visible = false;
2242  foreach(l, activeSearchPath)
2243  {
2244  Oid namespaceId = lfirst_oid(l);
2245 
2246  if (namespaceId == myTempNamespace)
2247  continue; /* do not look in temp namespace */
2248 
2249  if (namespaceId == namespace)
2250  {
2251  /* Found it first in path */
2252  visible = true;
2253  break;
2254  }
2256  PointerGetDatum(name),
2257  ObjectIdGetDatum(namespaceId)))
2258  {
2259  /* Found something else first in path */
2260  break;
2261  }
2262  }
2263  }
2264 
2265  ReleaseSysCache(tup);
2266 
2267  return visible;
2268 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
FormData_pg_ts_parser * Form_pg_ts_parser
Definition: pg_ts_parser.h:44
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define SearchSysCacheExists2(cacheId, key1, key2)
Definition: syscache.h:172
const char * name
Definition: encode.c:521
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
#define lfirst_oid(lc)
Definition: pg_list.h:108
bool TSTemplateIsVisible ( Oid  tmplId)

Definition at line 2461 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().

2462 {
2463  HeapTuple tup;
2464  Form_pg_ts_template form;
2465  Oid namespace;
2466  bool visible;
2467 
2469  if (!HeapTupleIsValid(tup))
2470  elog(ERROR, "cache lookup failed for text search template %u", tmplId);
2471  form = (Form_pg_ts_template) GETSTRUCT(tup);
2472 
2474 
2475  /*
2476  * Quick check: if it ain't in the path at all, it ain't visible. Items in
2477  * the system namespace are surely in the path and so we needn't even do
2478  * list_member_oid() for them.
2479  */
2480  namespace = form->tmplnamespace;
2481  if (namespace != PG_CATALOG_NAMESPACE &&
2482  !list_member_oid(activeSearchPath, namespace))
2483  visible = false;
2484  else
2485  {
2486  /*
2487  * If it is in the path, it might still not be visible; it could be
2488  * hidden by another template of the same name earlier in the path. So
2489  * we must do a slow check for conflicting templates.
2490  */
2491  char *name = NameStr(form->tmplname);
2492  ListCell *l;
2493 
2494  visible = false;
2495  foreach(l, activeSearchPath)
2496  {
2497  Oid namespaceId = lfirst_oid(l);
2498 
2499  if (namespaceId == myTempNamespace)
2500  continue; /* do not look in temp namespace */
2501 
2502  if (namespaceId == namespace)
2503  {
2504  /* Found it first in path */
2505  visible = true;
2506  break;
2507  }
2509  PointerGetDatum(name),
2510  ObjectIdGetDatum(namespaceId)))
2511  {
2512  /* Found something else first in path */
2513  break;
2514  }
2515  }
2516  }
2517 
2518  ReleaseSysCache(tup);
2519 
2520  return visible;
2521 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define PointerGetDatum(X)
Definition: postgres.h:562
static Oid myTempNamespace
Definition: namespace.c:180
unsigned int Oid
Definition: postgres_ext.h:31
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define SearchSysCacheExists2(cacheId, key1, key2)
Definition: syscache.h:172
const char * name
Definition: encode.c:521
static List * activeSearchPath
Definition: namespace.c:133
FormData_pg_ts_template * Form_pg_ts_template
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
#define lfirst_oid(lc)
Definition: pg_list.h:108
bool TypeIsVisible ( Oid  typid)

Definition at line 776 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().

777 {
778  HeapTuple typtup;
779  Form_pg_type typform;
780  Oid typnamespace;
781  bool visible;
782 
783  typtup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typid));
784  if (!HeapTupleIsValid(typtup))
785  elog(ERROR, "cache lookup failed for type %u", typid);
786  typform = (Form_pg_type) GETSTRUCT(typtup);
787 
789 
790  /*
791  * Quick check: if it ain't in the path at all, it ain't visible. Items in
792  * the system namespace are surely in the path and so we needn't even do
793  * list_member_oid() for them.
794  */
795  typnamespace = typform->typnamespace;
796  if (typnamespace != PG_CATALOG_NAMESPACE &&
797  !list_member_oid(activeSearchPath, typnamespace))
798  visible = false;
799  else
800  {
801  /*
802  * If it is in the path, it might still not be visible; it could be
803  * hidden by another type of the same name earlier in the path. So we
804  * must do a slow check for conflicting types.
805  */
806  char *typname = NameStr(typform->typname);
807  ListCell *l;
808 
809  visible = false;
810  foreach(l, activeSearchPath)
811  {
812  Oid namespaceId = lfirst_oid(l);
813 
814  if (namespaceId == typnamespace)
815  {
816  /* Found it first in path */
817  visible = true;
818  break;
819  }
821  PointerGetDatum(typname),
822  ObjectIdGetDatum(namespaceId)))
823  {
824  /* Found something else first in path */
825  break;
826  }
827  }
828  }
829 
830  ReleaseSysCache(typtup);
831 
832  return visible;
833 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define PointerGetDatum(X)
Definition: postgres.h:562
FormData_pg_type * Form_pg_type
Definition: pg_type.h:233
unsigned int Oid
Definition: postgres_ext.h:31
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:152
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define PG_CATALOG_NAMESPACE
Definition: pg_namespace.h:71
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1116
bool list_member_oid(const List *list, Oid datum)
Definition: list.c:505
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define SearchSysCacheExists2(cacheId, key1, key2)
Definition: syscache.h:172
static List * activeSearchPath
Definition: namespace.c:133
#define NameStr(name)
Definition: c.h:499
#define elog
Definition: elog.h:219
#define lfirst_oid(lc)
Definition: pg_list.h:108
Oid TypenameGetTypid ( const char *  typname)

Definition at line 747 of file namespace.c.

References GetSysCacheOid2, InvalidOid, lfirst_oid, ObjectIdGetDatum, OidIsValid, PointerGetDatum, recomputeNamespacePath(), and TYPENAMENSP.

Referenced by LookupTypeName().

748 {
749  Oid typid;
750  ListCell *l;
751 
753 
754  foreach(l, activeSearchPath)
755  {
756  Oid namespaceId = lfirst_oid(l);
757 
759  PointerGetDatum(typname),
760  ObjectIdGetDatum(namespaceId));
761  if (OidIsValid(typid))
762  return typid;
763  }
764 
765  /* Not found in path */
766  return InvalidOid;
767 }
#define PointerGetDatum(X)
Definition: postgres.h:562
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:538
#define GetSysCacheOid2(cacheId, key1, key2)
Definition: syscache.h:181
static void recomputeNamespacePath(void)
Definition: namespace.c:3535
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define InvalidOid
Definition: postgres_ext.h:36
static List * activeSearchPath
Definition: namespace.c:133
#define lfirst_oid(lc)
Definition: pg_list.h:108

Variable Documentation

char* namespace_search_path

Definition at line 190 of file namespace.c.

Referenced by recomputeNamespacePath().