mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-09-04 17:27:21 +02:00
no longer returns buffer pointer, can be gotten from scan; descriptor; bootstrap can create multi-key indexes; pg_procname index now is multi-key index; oidint2, oidint4, oidname are gone (must be removed from regression tests); use System Cache rather than sequential scan in many places; heap_modifytuple no longer takes buffer parameter; remove unused buffer parameter in a few other functions; oid8 is not index-able; remove some use of single-character variable names; cleanup Buffer variables usage and scan descriptor looping; cleaned up allocation and freeing of tuples; 18k lines of diff;
435 lines
9.8 KiB
C
435 lines
9.8 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* remove.c--
|
|
* POSTGRES remove (function | type | operator ) utilty code.
|
|
*
|
|
* Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
*
|
|
* IDENTIFICATION
|
|
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/remove.c,v 1.27 1998/08/19 02:01:50 momjian Exp $
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#include "postgres.h"
|
|
|
|
#include "access/heapam.h"
|
|
#include "catalog/catname.h"
|
|
#include "catalog/pg_aggregate.h"
|
|
#include "catalog/pg_language.h"
|
|
#include "catalog/pg_operator.h"
|
|
#include "catalog/pg_proc.h"
|
|
#include "catalog/pg_type.h"
|
|
#include "commands/defrem.h"
|
|
#include "fmgr.h"
|
|
#include "miscadmin.h"
|
|
#include "parser/parse_func.h"
|
|
#include "storage/bufmgr.h"
|
|
#include "utils/acl.h"
|
|
#include "utils/builtins.h"
|
|
#include "utils/syscache.h"
|
|
|
|
#ifndef HAVE_MEMMOVE
|
|
#include <regex/utils.h>
|
|
#else
|
|
#include <string.h>
|
|
#endif
|
|
|
|
/*
|
|
* RemoveOperator --
|
|
* Deletes an operator.
|
|
*
|
|
* Exceptions:
|
|
* BadArg if name is invalid.
|
|
* BadArg if type1 is invalid.
|
|
* "WARN" if operator nonexistent.
|
|
* ...
|
|
*/
|
|
void
|
|
RemoveOperator(char *operatorName, /* operator name */
|
|
char *typeName1, /* first type name */
|
|
char *typeName2) /* optional second type name */
|
|
{
|
|
Relation relation;
|
|
HeapTuple tup;
|
|
Oid typeId1 = InvalidOid;
|
|
Oid typeId2 = InvalidOid;
|
|
bool defined;
|
|
char *userName;
|
|
char oprtype;
|
|
|
|
if (typeName1)
|
|
{
|
|
typeId1 = TypeGet(typeName1, &defined);
|
|
if (!OidIsValid(typeId1))
|
|
{
|
|
elog(ERROR, "RemoveOperator: type '%s' does not exist", typeName1);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (typeName2)
|
|
{
|
|
typeId2 = TypeGet(typeName2, &defined);
|
|
if (!OidIsValid(typeId2))
|
|
{
|
|
elog(ERROR, "RemoveOperator: type '%s' does not exist", typeName2);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (OidIsValid(typeId1) && OidIsValid(typeId2))
|
|
oprtype = 'b';
|
|
else if (OidIsValid(typeId1))
|
|
oprtype = 'l';
|
|
else
|
|
oprtype = 'r';
|
|
|
|
tup = SearchSysCacheTupleCopy(OPRNAME,
|
|
PointerGetDatum(operatorName),
|
|
ObjectIdGetDatum(typeId1),
|
|
ObjectIdGetDatum(typeId2),
|
|
CharGetDatum(oprtype));
|
|
|
|
relation = heap_openr(OperatorRelationName);
|
|
if (HeapTupleIsValid(tup))
|
|
{
|
|
#ifndef NO_SECURITY
|
|
userName = GetPgUserName();
|
|
if (!pg_ownercheck(userName,
|
|
(char *) ObjectIdGetDatum(tup->t_oid),
|
|
OPROID))
|
|
elog(ERROR, "RemoveOperator: operator '%s': permission denied",
|
|
operatorName);
|
|
#endif
|
|
heap_delete(relation, &tup->t_ctid);
|
|
}
|
|
else
|
|
{
|
|
if (OidIsValid(typeId1) && OidIsValid(typeId2))
|
|
{
|
|
elog(ERROR, "RemoveOperator: binary operator '%s' taking '%s' and '%s' does not exist",
|
|
operatorName,
|
|
typeName1,
|
|
typeName2);
|
|
}
|
|
else if (OidIsValid(typeId1))
|
|
{
|
|
elog(ERROR, "RemoveOperator: right unary operator '%s' taking '%s' does not exist",
|
|
operatorName,
|
|
typeName1);
|
|
}
|
|
else
|
|
{
|
|
elog(ERROR, "RemoveOperator: left unary operator '%s' taking '%s' does not exist",
|
|
operatorName,
|
|
typeName2);
|
|
}
|
|
}
|
|
pfree(tup);
|
|
heap_close(relation);
|
|
}
|
|
|
|
#ifdef NOTYET
|
|
/*
|
|
* this stuff is to support removing all reference to a type
|
|
* don't use it - pma 2/1/94
|
|
*/
|
|
/*
|
|
* SingleOpOperatorRemove
|
|
* Removes all operators that have operands or a result of type 'typeOid'.
|
|
*/
|
|
static void
|
|
SingleOpOperatorRemove(Oid typeOid)
|
|
{
|
|
Relation rel;
|
|
ScanKeyData key[3];
|
|
HeapScanDesc scan;
|
|
HeapTuple tup;
|
|
static attnums[3] = {7, 8, 9}; /* left, right, return */
|
|
int i;
|
|
|
|
ScanKeyEntryInitialize(&key[0],
|
|
0, 0, F_OIDEQ, (Datum) typeOid);
|
|
rel = heap_openr(OperatorRelationName);
|
|
for (i = 0; i < 3; ++i)
|
|
{
|
|
key[0].sk_attno = attnums[i];
|
|
scan = heap_beginscan(rel, 0, SnapshotNow, 1, key);
|
|
while (HeapTupleIsValid(tup = heap_getnext(scan, 0)))
|
|
heap_delete(rel, &tup->t_ctid);
|
|
heap_endscan(scan);
|
|
}
|
|
heap_close(rel);
|
|
}
|
|
|
|
/*
|
|
* AttributeAndRelationRemove
|
|
* Removes all entries in the attribute and relation relations
|
|
* that contain entries of type 'typeOid'.
|
|
* Currently nothing calls this code, it is untested.
|
|
*/
|
|
static void
|
|
AttributeAndRelationRemove(Oid typeOid)
|
|
{
|
|
struct oidlist
|
|
{
|
|
Oid reloid;
|
|
struct oidlist *next;
|
|
};
|
|
struct oidlist *oidptr,
|
|
*optr;
|
|
Relation rel;
|
|
ScanKeyData key[1];
|
|
HeapScanDesc scan;
|
|
HeapTuple tup;
|
|
|
|
/*
|
|
* Get the oid's of the relations to be removed by scanning the entire
|
|
* attribute relation. We don't need to remove the attributes here,
|
|
* because amdestroy will remove all attributes of the relation. XXX
|
|
* should check for duplicate relations
|
|
*/
|
|
|
|
ScanKeyEntryInitialize(&key[0],
|
|
0, 3, F_OIDEQ, (Datum) typeOid);
|
|
|
|
oidptr = (struct oidlist *) palloc(sizeof(*oidptr));
|
|
oidptr->next = NULL;
|
|
optr = oidptr;
|
|
rel = heap_openr(AttributeRelationName);
|
|
scan = heap_beginscan(rel, 0, SnapshotNow, 1, key);
|
|
while (HeapTupleIsValid(tup = heap_getnext(scan, 0)))
|
|
{
|
|
optr->reloid = ((AttributeTupleForm) GETSTRUCT(tup))->attrelid;
|
|
optr->next = (struct oidlist *) palloc(sizeof(*oidptr));
|
|
optr = optr->next;
|
|
}
|
|
optr->next = NULL;
|
|
heap_endscan(scan);
|
|
heap_close(rel);
|
|
|
|
|
|
ScanKeyEntryInitialize(&key[0], 0,
|
|
ObjectIdAttributeNumber,
|
|
F_OIDEQ, (Datum) 0);
|
|
optr = oidptr;
|
|
rel = heap_openr(RelationRelationName);
|
|
while (PointerIsValid((char *) optr->next))
|
|
{
|
|
key[0].sk_argument = (Datum) (optr++)->reloid;
|
|
scan = heap_beginscan(rel, 0, SnapshotNow, 1, key);
|
|
tup = heap_getnext(scan, 0);
|
|
if (HeapTupleIsValid(tup))
|
|
{
|
|
char *name;
|
|
|
|
name = (((Form_pg_class) GETSTRUCT(tup))->relname).data;
|
|
heap_destroy_with_catalog(name);
|
|
}
|
|
}
|
|
heap_endscan(scan);
|
|
heap_close(rel);
|
|
}
|
|
|
|
#endif /* NOTYET */
|
|
|
|
/*
|
|
* TypeRemove
|
|
* Removes the type 'typeName' and all attributes and relations that
|
|
* use it.
|
|
*/
|
|
void
|
|
RemoveType(char *typeName) /* type name to be removed */
|
|
{
|
|
Relation relation;
|
|
HeapTuple tup;
|
|
Oid typeOid;
|
|
char *shadow_type;
|
|
char *userName;
|
|
|
|
#ifndef NO_SECURITY
|
|
userName = GetPgUserName();
|
|
if (!pg_ownercheck(userName, typeName, TYPNAME))
|
|
elog(ERROR, "RemoveType: type '%s': permission denied",
|
|
typeName);
|
|
#endif
|
|
|
|
relation = heap_openr(TypeRelationName);
|
|
tup = SearchSysCacheTuple(TYPNAME,
|
|
PointerGetDatum(typeName),
|
|
0, 0, 0);
|
|
|
|
if (!HeapTupleIsValid(tup))
|
|
{
|
|
heap_close(relation);
|
|
elog(ERROR, "RemoveType: type '%s' does not exist", typeName);
|
|
}
|
|
|
|
relation = heap_openr(TypeRelationName);
|
|
typeOid = tup->t_oid;
|
|
heap_delete(relation, &tup->t_ctid);
|
|
|
|
/* Now, Delete the "array of" that type */
|
|
shadow_type = makeArrayTypeName(typeName);
|
|
tup = SearchSysCacheTuple(TYPNAME,
|
|
PointerGetDatum(shadow_type),
|
|
0, 0, 0);
|
|
if (!HeapTupleIsValid(tup))
|
|
{
|
|
heap_close(relation);
|
|
elog(ERROR, "RemoveType: type '%s' does not exist", typeName);
|
|
}
|
|
|
|
typeOid = tup->t_oid;
|
|
heap_delete(relation, &tup->t_ctid);
|
|
|
|
heap_close(relation);
|
|
}
|
|
|
|
/*
|
|
* RemoveFunction --
|
|
* Deletes a function.
|
|
*
|
|
* Exceptions:
|
|
* BadArg if name is invalid.
|
|
* "WARN" if function nonexistent.
|
|
* ...
|
|
*/
|
|
void
|
|
RemoveFunction(char *functionName, /* function name to be removed */
|
|
int nargs,
|
|
List *argNameList /* list of TypeNames */ )
|
|
{
|
|
Relation relation;
|
|
HeapTuple tup;
|
|
Oid argList[8];
|
|
char *userName;
|
|
char *typename;
|
|
int i;
|
|
|
|
|
|
MemSet(argList, 0, 8 * sizeof(Oid));
|
|
for (i = 0; i < nargs; i++)
|
|
{
|
|
typename = strVal(lfirst(argNameList));
|
|
argNameList = lnext(argNameList);
|
|
|
|
if (strcmp(typename, "opaque") == 0)
|
|
argList[i] = 0;
|
|
else
|
|
{
|
|
tup = SearchSysCacheTuple(TYPNAME,
|
|
PointerGetDatum(typename),
|
|
0, 0, 0);
|
|
|
|
if (!HeapTupleIsValid(tup))
|
|
elog(ERROR, "RemoveFunction: type '%s' not found", typename);
|
|
argList[i] = tup->t_oid;
|
|
}
|
|
}
|
|
|
|
#ifndef NO_SECURITY
|
|
userName = GetPgUserName();
|
|
if (!pg_func_ownercheck(userName, functionName, nargs, argList))
|
|
{
|
|
elog(ERROR, "RemoveFunction: function '%s': permission denied",
|
|
functionName);
|
|
}
|
|
#endif
|
|
|
|
relation = heap_openr(ProcedureRelationName);
|
|
tup = SearchSysCacheTuple(PRONAME,
|
|
PointerGetDatum(functionName),
|
|
Int32GetDatum(nargs),
|
|
PointerGetDatum(argList),
|
|
0);
|
|
|
|
if (!HeapTupleIsValid(tup))
|
|
{
|
|
heap_close(relation);
|
|
func_error("RemoveFunction", functionName, nargs, argList, NULL);
|
|
}
|
|
|
|
if ((((Form_pg_proc) GETSTRUCT(tup))->prolang) == INTERNALlanguageId)
|
|
{
|
|
heap_close(relation);
|
|
elog(ERROR, "RemoveFunction: function \"%s\" is built-in",functionName);
|
|
}
|
|
|
|
heap_delete(relation, &tup->t_ctid);
|
|
|
|
heap_close(relation);
|
|
}
|
|
|
|
void
|
|
RemoveAggregate(char *aggName, char *aggType)
|
|
{
|
|
Relation relation;
|
|
HeapTuple tup;
|
|
char *userName;
|
|
Oid basetypeID = InvalidOid;
|
|
bool defined;
|
|
|
|
|
|
/*
|
|
* if a basetype is passed in, then attempt to find an aggregate for
|
|
* that specific type.
|
|
*
|
|
* else if the basetype is blank, then attempt to find an aggregate with
|
|
* a basetype of zero. This is valid. It means that the aggregate is
|
|
* to apply to all basetypes. ie, a counter of some sort.
|
|
*
|
|
*/
|
|
|
|
if (aggType)
|
|
{
|
|
basetypeID = TypeGet(aggType, &defined);
|
|
if (!OidIsValid(basetypeID))
|
|
elog(ERROR, "RemoveAggregate: type '%s' does not exist", aggType);
|
|
}
|
|
else
|
|
basetypeID = 0;
|
|
|
|
#ifndef NO_SECURITY
|
|
userName = GetPgUserName();
|
|
if (!pg_aggr_ownercheck(userName, aggName, basetypeID))
|
|
{
|
|
if (aggType)
|
|
{
|
|
elog(ERROR, "RemoveAggregate: aggregate '%s' on type '%s': permission denied",
|
|
aggName, aggType);
|
|
}
|
|
else
|
|
{
|
|
elog(ERROR, "RemoveAggregate: aggregate '%s': permission denied",
|
|
aggName);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
relation = heap_openr(AggregateRelationName);
|
|
tup = SearchSysCacheTuple(AGGNAME,
|
|
PointerGetDatum(aggName),
|
|
ObjectIdGetDatum(basetypeID),
|
|
0, 0);
|
|
|
|
if (!HeapTupleIsValid(tup))
|
|
{
|
|
heap_close(relation);
|
|
if (aggType)
|
|
{
|
|
elog(ERROR, "RemoveAggregate: aggregate '%s' for '%s' does not exist",
|
|
aggName, aggType);
|
|
}
|
|
else
|
|
{
|
|
elog(ERROR, "RemoveAggregate: aggregate '%s' for all types does not exist",
|
|
aggName);
|
|
}
|
|
}
|
|
heap_delete(relation, &tup->t_ctid);
|
|
|
|
heap_close(relation);
|
|
}
|