#include "nodes/parsenodes.h"

Include dependency graph for foreign.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	ForeignDataWrapper

struct	ForeignServer

struct	UserMapping

struct	ForeignTable

Macros
#define	MappingUserName(userid) (OidIsValid(userid) ? GetUserNameFromId(userid, false) : "public")

#define	FSV_MISSING_OK 0x01

#define	FDW_MISSING_OK 0x01

Typedefs
typedef struct ForeignDataWrapper	ForeignDataWrapper

typedef struct ForeignServer	ForeignServer

typedef struct UserMapping	UserMapping

typedef struct ForeignTable	ForeignTable

Functions
ForeignServer *	GetForeignServer (Oid serverid)

ForeignServer *	GetForeignServerExtended (Oid serverid, bits16 flags)

ForeignServer *	GetForeignServerByName (const char *srvname, bool missing_ok)

UserMapping *	GetUserMapping (Oid userid, Oid serverid)

ForeignDataWrapper *	GetForeignDataWrapper (Oid fdwid)

ForeignDataWrapper *	GetForeignDataWrapperExtended (Oid fdwid, bits16 flags)

ForeignDataWrapper *	GetForeignDataWrapperByName (const char *fdwname, bool missing_ok)

ForeignTable *	GetForeignTable (Oid relid)

List *	GetForeignColumnOptions (Oid relid, AttrNumber attnum)

Oid	get_foreign_data_wrapper_oid (const char *fdwname, bool missing_ok)

Oid	get_foreign_server_oid (const char *servername, bool missing_ok)

Macro Definition Documentation

◆ FDW_MISSING_OK

#define FDW_MISSING_OK 0x01

Definition at line 64 of file foreign.h.

◆ FSV_MISSING_OK

#define FSV_MISSING_OK 0x01

Definition at line 61 of file foreign.h.

◆ MappingUserName

#define MappingUserName ( userid ) (OidIsValid(userid) ? GetUserNameFromId(userid, false) : "public")

Definition at line 20 of file foreign.h.

Typedef Documentation

◆ ForeignDataWrapper

typedef struct ForeignDataWrapper ForeignDataWrapper

◆ ForeignServer

typedef struct ForeignServer ForeignServer

◆ ForeignTable

typedef struct ForeignTable ForeignTable

◆ UserMapping

typedef struct UserMapping UserMapping

Function Documentation

◆ get_foreign_data_wrapper_oid()

Oid get_foreign_data_wrapper_oid	(	const char *	fdwname,
		bool	missing_ok
	)

Definition at line 682 of file foreign.c.

{
    Oid         oid;
 
    oid = GetSysCacheOid1(FOREIGNDATAWRAPPERNAME,
                          Anum_pg_foreign_data_wrapper_oid,
                          CStringGetDatum(fdwname));
    if (!OidIsValid(oid) && !missing_ok)
        ereport(ERROR,
                (errcode(ERRCODE_UNDEFINED_OBJECT),
                 errmsg("foreign-data wrapper \"%s\" does not exist",
                        fdwname)));
    return oid;
}

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

Referenced by convert_foreign_data_wrapper_name(), get_object_address_unqualified(), and GetForeignDataWrapperByName().

◆ get_foreign_server_oid()

Oid get_foreign_server_oid	(	const char *	servername,
		bool	missing_ok
	)

Definition at line 705 of file foreign.c.

{
    Oid         oid;
 
    oid = GetSysCacheOid1(FOREIGNSERVERNAME, Anum_pg_foreign_server_oid,
                          CStringGetDatum(servername));
    if (!OidIsValid(oid) && !missing_ok)
        ereport(ERROR,
                (errcode(ERRCODE_UNDEFINED_OBJECT),
                 errmsg("server \"%s\" does not exist", servername)));
    return oid;
}

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

Referenced by convert_server_name(), CreateForeignServer(), get_object_address_unqualified(), and GetForeignServerByName().

◆ GetForeignColumnOptions()

List * GetForeignColumnOptions	(	Oid	relid,
		AttrNumber	attnum
	)

Definition at line 293 of file foreign.c.

{
    List       *options;
    HeapTuple   tp;
    Datum       datum;
    bool        isnull;
 
    tp = SearchSysCache2(ATTNUM,
                         ObjectIdGetDatum(relid),
                         Int16GetDatum(attnum));
    if (!HeapTupleIsValid(tp))
        elog(ERROR, "cache lookup failed for attribute %d of relation %u",
             attnum, relid);
    datum = SysCacheGetAttr(ATTNUM,
                            tp,
                            Anum_pg_attribute_attfdwoptions,
                            &isnull);
    if (isnull)
        options = NIL;
    else
        options = untransformRelOptions(datum);
 
    ReleaseSysCache(tp);
 
    return options;
}

References attnum, elog, ERROR, HeapTupleIsValid, Int16GetDatum(), NIL, ObjectIdGetDatum(), options, ReleaseSysCache(), SearchSysCache2(), SysCacheGetAttr(), and untransformRelOptions().

Referenced by deparseAnalyzeSql(), deparseColumnRef(), and get_file_fdw_attribute_options().

◆ GetForeignDataWrapper()

ForeignDataWrapper * GetForeignDataWrapper ( Oid fdwid )

Definition at line 38 of file foreign.c.

{
    return GetForeignDataWrapperExtended(fdwid, 0);
}

References GetForeignDataWrapperExtended().

Referenced by AlterForeignServer(), AlterForeignServerOwner_internal(), AlterUserMapping(), ATExecAlterColumnGenericOptions(), ATExecGenericOptions(), CreateForeignTable(), CreateUserMapping(), fileGetOptions(), get_connect_string(), GetForeignDataWrapperByName(), and ImportForeignSchema().

◆ GetForeignDataWrapperByName()

ForeignDataWrapper * GetForeignDataWrapperByName	(	const char *	fdwname,
		bool	missing_ok
	)

Definition at line 97 of file foreign.c.

{
    Oid         fdwId = get_foreign_data_wrapper_oid(fdwname, missing_ok);
 
    if (!OidIsValid(fdwId))
        return NULL;
 
    return GetForeignDataWrapper(fdwId);
}

References get_foreign_data_wrapper_oid(), GetForeignDataWrapper(), and OidIsValid.

Referenced by CreateForeignDataWrapper(), and CreateForeignServer().

◆ GetForeignDataWrapperExtended()

ForeignDataWrapper * GetForeignDataWrapperExtended	(	Oid	fdwid,
		bits16	flags
	)

Definition at line 50 of file foreign.c.

{
    Form_pg_foreign_data_wrapper fdwform;
    ForeignDataWrapper *fdw;
    Datum       datum;
    HeapTuple   tp;
    bool        isnull;
 
    tp = SearchSysCache1(FOREIGNDATAWRAPPEROID, ObjectIdGetDatum(fdwid));
 
    if (!HeapTupleIsValid(tp))
    {
        if ((flags & FDW_MISSING_OK) == 0)
            elog(ERROR, "cache lookup failed for foreign-data wrapper %u", fdwid);
        return NULL;
    }
 
    fdwform = (Form_pg_foreign_data_wrapper) GETSTRUCT(tp);
 
    fdw = (ForeignDataWrapper *) palloc(sizeof(ForeignDataWrapper));
    fdw->fdwid = fdwid;
    fdw->owner = fdwform->fdwowner;
    fdw->fdwname = pstrdup(NameStr(fdwform->fdwname));
    fdw->fdwhandler = fdwform->fdwhandler;
    fdw->fdwvalidator = fdwform->fdwvalidator;
 
    /* Extract the fdwoptions */
    datum = SysCacheGetAttr(FOREIGNDATAWRAPPEROID,
                            tp,
                            Anum_pg_foreign_data_wrapper_fdwoptions,
                            &isnull);
    if (isnull)
        fdw->options = NIL;
    else
        fdw->options = untransformRelOptions(datum);
 
    ReleaseSysCache(tp);
 
    return fdw;
}

References elog, ERROR, FDW_MISSING_OK, ForeignDataWrapper::fdwhandler, ForeignDataWrapper::fdwid, ForeignDataWrapper::fdwname, ForeignDataWrapper::fdwvalidator, GETSTRUCT(), HeapTupleIsValid, NameStr, NIL, ObjectIdGetDatum(), ForeignDataWrapper::options, ForeignDataWrapper::owner, palloc(), pstrdup(), ReleaseSysCache(), SearchSysCache1(), SysCacheGetAttr(), and untransformRelOptions().

Referenced by GetForeignDataWrapper(), getObjectDescription(), and getObjectIdentityParts().

◆ GetForeignServer()

ForeignServer * GetForeignServer ( Oid serverid )

Definition at line 112 of file foreign.c.

{
    return GetForeignServerExtended(serverid, 0);
}

References GetForeignServerExtended().

Referenced by ATExecAlterColumnGenericOptions(), ATExecGenericOptions(), fileGetOptions(), get_batch_size_option(), GetForeignServerByName(), getObjectDescription(), getObjectIdentityParts(), GetUserMapping(), make_new_connection(), pgfdw_reject_incomplete_xact_state_change(), postgresAcquireSampleRowsFunc(), postgresExecForeignTruncate(), postgresGetForeignRelSize(), postgresImportForeignSchema(), and postgresIsForeignRelUpdatable().

◆ GetForeignServerByName()

ForeignServer * GetForeignServerByName	(	const char *	srvname,
		bool	missing_ok
	)

Definition at line 183 of file foreign.c.

{
    Oid         serverid = get_foreign_server_oid(srvname, missing_ok);
 
    if (!OidIsValid(serverid))
        return NULL;
 
    return GetForeignServer(serverid);
}

References get_foreign_server_oid(), GetForeignServer(), and OidIsValid.

Referenced by AlterUserMapping(), CreateForeignTable(), CreateUserMapping(), get_connect_string(), get_object_address_usermapping(), ImportForeignSchema(), postgres_fdw_disconnect(), and RemoveUserMapping().

◆ GetForeignServerExtended()

ForeignServer * GetForeignServerExtended	(	Oid	serverid,
		bits16	flags
	)

Definition at line 124 of file foreign.c.

{
    Form_pg_foreign_server serverform;
    ForeignServer *server;
    HeapTuple   tp;
    Datum       datum;
    bool        isnull;
 
    tp = SearchSysCache1(FOREIGNSERVEROID, ObjectIdGetDatum(serverid));
 
    if (!HeapTupleIsValid(tp))
    {
        if ((flags & FSV_MISSING_OK) == 0)
            elog(ERROR, "cache lookup failed for foreign server %u", serverid);
        return NULL;
    }
 
    serverform = (Form_pg_foreign_server) GETSTRUCT(tp);
 
    server = (ForeignServer *) palloc(sizeof(ForeignServer));
    server->serverid = serverid;
    server->servername = pstrdup(NameStr(serverform->srvname));
    server->owner = serverform->srvowner;
    server->fdwid = serverform->srvfdw;
 
    /* Extract server type */
    datum = SysCacheGetAttr(FOREIGNSERVEROID,
                            tp,
                            Anum_pg_foreign_server_srvtype,
                            &isnull);
    server->servertype = isnull ? NULL : TextDatumGetCString(datum);
 
    /* Extract server version */
    datum = SysCacheGetAttr(FOREIGNSERVEROID,
                            tp,
                            Anum_pg_foreign_server_srvversion,
                            &isnull);
    server->serverversion = isnull ? NULL : TextDatumGetCString(datum);
 
    /* Extract the srvoptions */
    datum = SysCacheGetAttr(FOREIGNSERVEROID,
                            tp,
                            Anum_pg_foreign_server_srvoptions,
                            &isnull);
    if (isnull)
        server->options = NIL;
    else
        server->options = untransformRelOptions(datum);
 
    ReleaseSysCache(tp);
 
    return server;
}

References elog, ERROR, ForeignServer::fdwid, FSV_MISSING_OK, GETSTRUCT(), HeapTupleIsValid, NameStr, NIL, ObjectIdGetDatum(), ForeignServer::options, ForeignServer::owner, palloc(), pstrdup(), ReleaseSysCache(), SearchSysCache1(), ForeignServer::serverid, ForeignServer::servername, ForeignServer::servertype, ForeignServer::serverversion, SysCacheGetAttr(), TextDatumGetCString, and untransformRelOptions().

Referenced by disconnect_cached_connections(), GetForeignServer(), getObjectDescription(), getObjectIdentityParts(), and postgres_fdw_get_connections_internal().

◆ GetForeignTable()

ForeignTable * GetForeignTable ( Oid relid )

Definition at line 255 of file foreign.c.

{
    Form_pg_foreign_table tableform;
    ForeignTable *ft;
    HeapTuple   tp;
    Datum       datum;
    bool        isnull;
 
    tp = SearchSysCache1(FOREIGNTABLEREL, ObjectIdGetDatum(relid));
    if (!HeapTupleIsValid(tp))
        elog(ERROR, "cache lookup failed for foreign table %u", relid);
    tableform = (Form_pg_foreign_table) GETSTRUCT(tp);
 
    ft = (ForeignTable *) palloc(sizeof(ForeignTable));
    ft->relid = relid;
    ft->serverid = tableform->ftserver;
 
    /* Extract the ftoptions */
    datum = SysCacheGetAttr(FOREIGNTABLEREL,
                            tp,
                            Anum_pg_foreign_table_ftoptions,
                            &isnull);
    if (isnull)
        ft->options = NIL;
    else
        ft->options = untransformRelOptions(datum);
 
    ReleaseSysCache(tp);
 
    return ft;
}

References elog, ERROR, GETSTRUCT(), HeapTupleIsValid, NIL, ObjectIdGetDatum(), ForeignTable::options, palloc(), ReleaseSysCache(), ForeignTable::relid, SearchSysCache1(), ForeignTable::serverid, SysCacheGetAttr(), and untransformRelOptions().

Referenced by check_selective_binary_conversion(), create_foreign_modify(), deparseRelation(), fileGetOptions(), get_batch_size_option(), postgresAcquireSampleRowsFunc(), postgresAnalyzeForeignTable(), postgresBeginDirectModify(), postgresBeginForeignScan(), postgresExecForeignTruncate(), postgresGetAnalyzeInfoForForeignTable(), postgresGetForeignRelSize(), and postgresIsForeignRelUpdatable().

◆ GetUserMapping()

UserMapping * GetUserMapping	(	Oid	userid,
		Oid	serverid
	)

Definition at line 201 of file foreign.c.

{
    Datum       datum;
    HeapTuple   tp;
    bool        isnull;
    UserMapping *um;
 
    tp = SearchSysCache2(USERMAPPINGUSERSERVER,
                         ObjectIdGetDatum(userid),
                         ObjectIdGetDatum(serverid));
 
    if (!HeapTupleIsValid(tp))
    {
        /* Not found for the specific user -- try PUBLIC */
        tp = SearchSysCache2(USERMAPPINGUSERSERVER,
                             ObjectIdGetDatum(InvalidOid),
                             ObjectIdGetDatum(serverid));
    }
 
    if (!HeapTupleIsValid(tp))
    {
        ForeignServer *server = GetForeignServer(serverid);
 
        ereport(ERROR,
                (errcode(ERRCODE_UNDEFINED_OBJECT),
                 errmsg("user mapping not found for user \"%s\", server \"%s\"",
                        MappingUserName(userid), server->servername)));
    }
 
    um = (UserMapping *) palloc(sizeof(UserMapping));
    um->umid = ((Form_pg_user_mapping) GETSTRUCT(tp))->oid;
    um->userid = userid;
    um->serverid = serverid;
 
    /* Extract the umoptions */
    datum = SysCacheGetAttr(USERMAPPINGUSERSERVER,
                            tp,
                            Anum_pg_user_mapping_umoptions,
                            &isnull);
    if (isnull)
        um->options = NIL;
    else
        um->options = untransformRelOptions(datum);
 
    ReleaseSysCache(tp);
 
    return um;
}

References ereport, errcode(), errmsg(), ERROR, GetForeignServer(), GETSTRUCT(), HeapTupleIsValid, InvalidOid, MappingUserName, NIL, ObjectIdGetDatum(), UserMapping::options, palloc(), ReleaseSysCache(), SearchSysCache2(), UserMapping::serverid, ForeignServer::servername, SysCacheGetAttr(), UserMapping::umid, untransformRelOptions(), and UserMapping::userid.

Referenced by create_foreign_modify(), get_connect_string(), postgresAcquireSampleRowsFunc(), postgresAnalyzeForeignTable(), postgresBeginDirectModify(), postgresBeginForeignScan(), postgresExecForeignTruncate(), postgresGetAnalyzeInfoForForeignTable(), postgresGetForeignRelSize(), and postgresImportForeignSchema().

Data Structures

Macros

Typedefs

Functions