1996-07-09 08:22:35 +02:00
|
|
|
/*-------------------------------------------------------------------------
|
|
|
|
*
|
1999-02-14 00:22:53 +01:00
|
|
|
* pg_operator.c
|
1997-09-07 07:04:48 +02:00
|
|
|
* routines to support manipulation of the pg_operator relation
|
1996-07-09 08:22:35 +02:00
|
|
|
*
|
2018-01-03 05:30:12 +01:00
|
|
|
* Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
|
2000-01-26 06:58:53 +01:00
|
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
1996-07-09 08:22:35 +02:00
|
|
|
*
|
|
|
|
*
|
|
|
|
* IDENTIFICATION
|
2010-09-20 22:08:53 +02:00
|
|
|
* src/backend/catalog/pg_operator.c
|
1996-07-09 08:22:35 +02:00
|
|
|
*
|
|
|
|
* NOTES
|
1997-09-07 07:04:48 +02:00
|
|
|
* these routines moved here from commands/define.c and somewhat cleaned up.
|
|
|
|
*
|
1996-07-09 08:22:35 +02:00
|
|
|
*-------------------------------------------------------------------------
|
|
|
|
*/
|
1998-04-27 06:08:07 +02:00
|
|
|
#include "postgres.h"
|
|
|
|
|
|
|
|
#include "access/heapam.h"
|
2012-08-30 22:15:44 +02:00
|
|
|
#include "access/htup_details.h"
|
2006-07-13 18:49:20 +02:00
|
|
|
#include "access/xact.h"
|
2002-07-17 00:12:20 +02:00
|
|
|
#include "catalog/dependency.h"
|
1999-11-22 18:56:41 +01:00
|
|
|
#include "catalog/indexing.h"
|
2008-08-16 02:01:38 +02:00
|
|
|
#include "catalog/namespace.h"
|
2010-11-25 17:48:49 +01:00
|
|
|
#include "catalog/objectaccess.h"
|
2005-04-14 22:03:27 +02:00
|
|
|
#include "catalog/pg_namespace.h"
|
1998-04-27 06:08:07 +02:00
|
|
|
#include "catalog/pg_operator.h"
|
2015-12-31 23:37:31 +01:00
|
|
|
#include "catalog/pg_operator_fn.h"
|
2005-04-14 03:38:22 +02:00
|
|
|
#include "catalog/pg_proc.h"
|
1998-04-27 06:08:07 +02:00
|
|
|
#include "catalog/pg_type.h"
|
|
|
|
#include "miscadmin.h"
|
2002-04-17 01:08:12 +02:00
|
|
|
#include "parser/parse_oper.h"
|
2002-04-27 05:45:03 +02:00
|
|
|
#include "utils/acl.h"
|
1998-04-27 06:08:07 +02:00
|
|
|
#include "utils/builtins.h"
|
2002-04-09 22:35:55 +02:00
|
|
|
#include "utils/lsyscache.h"
|
2008-06-19 02:46:06 +02:00
|
|
|
#include "utils/rel.h"
|
1998-04-27 06:08:07 +02:00
|
|
|
#include "utils/syscache.h"
|
|
|
|
|
1996-11-04 00:27:08 +01:00
|
|
|
|
2002-03-29 20:06:29 +01:00
|
|
|
static Oid OperatorGet(const char *operatorName,
|
2002-09-04 22:31:48 +02:00
|
|
|
Oid operatorNamespace,
|
|
|
|
Oid leftObjectId,
|
|
|
|
Oid rightObjectId,
|
|
|
|
bool *defined);
|
1999-04-11 04:30:59 +02:00
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
static Oid OperatorLookup(List *operatorName,
|
2002-09-04 22:31:48 +02:00
|
|
|
Oid leftObjectId,
|
|
|
|
Oid rightObjectId,
|
|
|
|
bool *defined);
|
2002-04-17 01:08:12 +02:00
|
|
|
|
2002-03-29 20:06:29 +01:00
|
|
|
static Oid OperatorShellMake(const char *operatorName,
|
2002-09-04 22:31:48 +02:00
|
|
|
Oid operatorNamespace,
|
|
|
|
Oid leftTypeId,
|
|
|
|
Oid rightTypeId);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
static Oid get_other_operator(List *otherOp,
|
2002-09-04 22:31:48 +02:00
|
|
|
Oid otherLeftTypeId, Oid otherRightTypeId,
|
|
|
|
const char *operatorName, Oid operatorNamespace,
|
|
|
|
Oid leftTypeId, Oid rightTypeId,
|
|
|
|
bool isCommutator);
|
2002-04-17 01:08:12 +02:00
|
|
|
|
2001-10-22 21:34:13 +02:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Check whether a proposed operator name is legal
|
|
|
|
*
|
|
|
|
* This had better match the behavior of parser/scan.l!
|
|
|
|
*
|
|
|
|
* We need this because the parser is not smart enough to check that
|
|
|
|
* the arguments of CREATE OPERATOR's COMMUTATOR, NEGATOR, etc clauses
|
|
|
|
* are operator names rather than some other lexical entity.
|
|
|
|
*/
|
|
|
|
static bool
|
|
|
|
validOperatorName(const char *name)
|
|
|
|
{
|
2001-10-25 07:50:21 +02:00
|
|
|
size_t len = strlen(name);
|
2001-10-22 21:34:13 +02:00
|
|
|
|
|
|
|
/* Can't be empty or too long */
|
|
|
|
if (len == 0 || len >= NAMEDATALEN)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
/* Can't contain any invalid characters */
|
|
|
|
/* Test string here should match op_chars in scan.l */
|
2003-07-21 03:59:11 +02:00
|
|
|
if (strspn(name, "~!@#^&|`?+-*/%<>=") != len)
|
2001-10-22 21:34:13 +02:00
|
|
|
return false;
|
|
|
|
|
|
|
|
/* Can't contain slash-star or dash-dash (comment starts) */
|
|
|
|
if (strstr(name, "/*") || strstr(name, "--"))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
/*
|
2013-05-29 22:58:43 +02:00
|
|
|
* For SQL standard compatibility, '+' and '-' cannot be the last char of
|
|
|
|
* a multi-char operator unless the operator contains chars that are not
|
|
|
|
* in SQL operators. The idea is to lex '=-' as two operators, but not to
|
|
|
|
* forbid operator names like '?-' that could not be sequences of standard
|
|
|
|
* SQL operators.
|
2001-10-22 21:34:13 +02:00
|
|
|
*/
|
|
|
|
if (len > 1 &&
|
2001-10-25 07:50:21 +02:00
|
|
|
(name[len - 1] == '+' ||
|
|
|
|
name[len - 1] == '-'))
|
2001-10-22 21:34:13 +02:00
|
|
|
{
|
2001-10-25 07:50:21 +02:00
|
|
|
int ic;
|
2001-10-22 21:34:13 +02:00
|
|
|
|
2001-10-25 07:50:21 +02:00
|
|
|
for (ic = len - 2; ic >= 0; ic--)
|
2001-10-22 21:34:13 +02:00
|
|
|
{
|
2003-07-21 03:59:11 +02:00
|
|
|
if (strchr("~!@#^&|`?%", name[ic]))
|
2001-10-22 21:34:13 +02:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (ic < 0)
|
|
|
|
return false; /* nope, not valid */
|
|
|
|
}
|
|
|
|
|
|
|
|
/* != isn't valid either, because parser will convert it to <> */
|
|
|
|
if (strcmp(name, "!=") == 0)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
/*
|
|
|
|
* OperatorGet
|
1996-07-09 08:22:35 +02:00
|
|
|
*
|
2002-04-17 01:08:12 +02:00
|
|
|
* finds an operator given an exact specification (name, namespace,
|
|
|
|
* left and right type IDs).
|
2001-06-01 04:41:36 +02:00
|
|
|
*
|
2017-08-16 06:22:32 +02:00
|
|
|
* *defined is set true if defined (not a shell)
|
1996-07-09 08:22:35 +02:00
|
|
|
*/
|
1997-09-08 04:41:22 +02:00
|
|
|
static Oid
|
2002-03-29 20:06:29 +01:00
|
|
|
OperatorGet(const char *operatorName,
|
2002-04-17 01:08:12 +02:00
|
|
|
Oid operatorNamespace,
|
2002-03-29 20:06:29 +01:00
|
|
|
Oid leftObjectId,
|
|
|
|
Oid rightObjectId,
|
|
|
|
bool *defined)
|
1996-07-09 08:22:35 +02:00
|
|
|
{
|
1997-09-08 04:41:22 +02:00
|
|
|
HeapTuple tup;
|
2002-03-29 20:06:29 +01:00
|
|
|
Oid operatorObjectId;
|
|
|
|
|
2010-02-14 19:42:19 +01:00
|
|
|
tup = SearchSysCache4(OPERNAMENSP,
|
|
|
|
PointerGetDatum(operatorName),
|
|
|
|
ObjectIdGetDatum(leftObjectId),
|
|
|
|
ObjectIdGetDatum(rightObjectId),
|
|
|
|
ObjectIdGetDatum(operatorNamespace));
|
1999-04-11 04:30:59 +02:00
|
|
|
if (HeapTupleIsValid(tup))
|
|
|
|
{
|
2002-04-25 04:56:56 +02:00
|
|
|
RegProcedure oprcode = ((Form_pg_operator) GETSTRUCT(tup))->oprcode;
|
1999-05-25 18:15:34 +02:00
|
|
|
|
2002-07-20 07:16:59 +02:00
|
|
|
operatorObjectId = HeapTupleGetOid(tup);
|
1999-04-11 04:30:59 +02:00
|
|
|
*defined = RegProcedureIsValid(oprcode);
|
2002-04-17 01:08:12 +02:00
|
|
|
ReleaseSysCache(tup);
|
1999-04-11 04:30:59 +02:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
operatorObjectId = InvalidOid;
|
|
|
|
*defined = false;
|
|
|
|
}
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
return operatorObjectId;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* OperatorLookup
|
|
|
|
*
|
|
|
|
* looks up an operator given a possibly-qualified name and
|
|
|
|
* left and right type IDs.
|
|
|
|
*
|
2017-08-16 06:22:32 +02:00
|
|
|
* *defined is set true if defined (not a shell)
|
2002-04-17 01:08:12 +02:00
|
|
|
*/
|
|
|
|
static Oid
|
|
|
|
OperatorLookup(List *operatorName,
|
|
|
|
Oid leftObjectId,
|
|
|
|
Oid rightObjectId,
|
|
|
|
bool *defined)
|
|
|
|
{
|
|
|
|
Oid operatorObjectId;
|
2002-04-25 04:56:56 +02:00
|
|
|
RegProcedure oprcode;
|
2002-04-17 01:08:12 +02:00
|
|
|
|
2006-03-14 23:48:25 +01:00
|
|
|
operatorObjectId = LookupOperName(NULL, operatorName,
|
|
|
|
leftObjectId, rightObjectId,
|
|
|
|
true, -1);
|
2002-04-17 01:08:12 +02:00
|
|
|
if (!OidIsValid(operatorObjectId))
|
|
|
|
{
|
|
|
|
*defined = false;
|
|
|
|
return InvalidOid;
|
|
|
|
}
|
|
|
|
|
|
|
|
oprcode = get_opcode(operatorObjectId);
|
|
|
|
*defined = RegProcedureIsValid(oprcode);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
1999-02-03 22:18:02 +01:00
|
|
|
return operatorObjectId;
|
1996-07-09 08:22:35 +02:00
|
|
|
}
|
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
|
2002-03-29 20:06:29 +01:00
|
|
|
/*
|
|
|
|
* OperatorShellMake
|
|
|
|
* Make a "shell" entry for a not-yet-existing operator.
|
1996-07-09 08:22:35 +02:00
|
|
|
*/
|
1997-09-08 04:41:22 +02:00
|
|
|
static Oid
|
2002-03-29 20:06:29 +01:00
|
|
|
OperatorShellMake(const char *operatorName,
|
2002-04-17 01:08:12 +02:00
|
|
|
Oid operatorNamespace,
|
2002-03-29 20:06:29 +01:00
|
|
|
Oid leftTypeId,
|
|
|
|
Oid rightTypeId)
|
1996-07-09 08:22:35 +02:00
|
|
|
{
|
2001-10-22 21:34:13 +02:00
|
|
|
Relation pg_operator_desc;
|
|
|
|
Oid operatorObjectId;
|
1998-02-26 05:46:47 +01:00
|
|
|
int i;
|
1997-09-08 04:41:22 +02:00
|
|
|
HeapTuple tup;
|
|
|
|
Datum values[Natts_pg_operator];
|
2008-11-02 02:45:28 +01:00
|
|
|
bool nulls[Natts_pg_operator];
|
1998-04-01 17:35:33 +02:00
|
|
|
NameData oname;
|
1997-09-08 04:41:22 +02:00
|
|
|
TupleDesc tupDesc;
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2001-10-22 21:34:13 +02:00
|
|
|
/*
|
|
|
|
* validate operator name
|
|
|
|
*/
|
|
|
|
if (!validOperatorName(operatorName))
|
2003-07-21 03:59:11 +02:00
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_NAME),
|
|
|
|
errmsg("\"%s\" is not a valid operator name",
|
|
|
|
operatorName)));
|
2001-10-22 21:34:13 +02:00
|
|
|
|
2001-03-22 07:16:21 +01:00
|
|
|
/*
|
|
|
|
* initialize our *nulls and *values arrays
|
1997-09-07 07:04:48 +02:00
|
|
|
*/
|
|
|
|
for (i = 0; i < Natts_pg_operator; ++i)
|
|
|
|
{
|
2008-11-02 02:45:28 +01:00
|
|
|
nulls[i] = false;
|
Phase 2 of pgindent updates.
Change pg_bsd_indent to follow upstream rules for placement of comments
to the right of code, and remove pgindent hack that caused comments
following #endif to not obey the general rule.
Commit e3860ffa4dd0dad0dd9eea4be9cc1412373a8c89 wasn't actually using
the published version of pg_bsd_indent, but a hacked-up version that
tried to minimize the amount of movement of comments to the right of
code. The situation of interest is where such a comment has to be
moved to the right of its default placement at column 33 because there's
code there. BSD indent has always moved right in units of tab stops
in such cases --- but in the previous incarnation, indent was working
in 8-space tab stops, while now it knows we use 4-space tabs. So the
net result is that in about half the cases, such comments are placed
one tab stop left of before. This is better all around: it leaves
more room on the line for comment text, and it means that in such
cases the comment uniformly starts at the next 4-space tab stop after
the code, rather than sometimes one and sometimes two tabs after.
Also, ensure that comments following #endif are indented the same
as comments following other preprocessor commands such as #else.
That inconsistency turns out to have been self-inflicted damage
from a poorly-thought-through post-indent "fixup" in pgindent.
This patch is much less interesting than the first round of indent
changes, but also bulkier, so I thought it best to separate the effects.
Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
2017-06-21 21:18:54 +02:00
|
|
|
values[i] = (Datum) NULL; /* redundant, but safe */
|
1997-09-07 07:04:48 +02:00
|
|
|
}
|
|
|
|
|
2001-03-22 07:16:21 +01:00
|
|
|
/*
|
2005-10-15 04:49:52 +02:00
|
|
|
* initialize values[] with the operator name and input data types. Note
|
|
|
|
* that oprcode is set to InvalidOid, indicating it's a shell.
|
1997-09-07 07:04:48 +02:00
|
|
|
*/
|
1998-04-01 17:35:33 +02:00
|
|
|
namestrcpy(&oname, operatorName);
|
2011-06-16 23:03:58 +02:00
|
|
|
values[Anum_pg_operator_oprname - 1] = NameGetDatum(&oname);
|
|
|
|
values[Anum_pg_operator_oprnamespace - 1] = ObjectIdGetDatum(operatorNamespace);
|
|
|
|
values[Anum_pg_operator_oprowner - 1] = ObjectIdGetDatum(GetUserId());
|
|
|
|
values[Anum_pg_operator_oprkind - 1] = CharGetDatum(leftTypeId ? (rightTypeId ? 'b' : 'r') : 'l');
|
|
|
|
values[Anum_pg_operator_oprcanmerge - 1] = BoolGetDatum(false);
|
|
|
|
values[Anum_pg_operator_oprcanhash - 1] = BoolGetDatum(false);
|
|
|
|
values[Anum_pg_operator_oprleft - 1] = ObjectIdGetDatum(leftTypeId);
|
|
|
|
values[Anum_pg_operator_oprright - 1] = ObjectIdGetDatum(rightTypeId);
|
|
|
|
values[Anum_pg_operator_oprresult - 1] = ObjectIdGetDatum(InvalidOid);
|
|
|
|
values[Anum_pg_operator_oprcom - 1] = ObjectIdGetDatum(InvalidOid);
|
|
|
|
values[Anum_pg_operator_oprnegate - 1] = ObjectIdGetDatum(InvalidOid);
|
|
|
|
values[Anum_pg_operator_oprcode - 1] = ObjectIdGetDatum(InvalidOid);
|
|
|
|
values[Anum_pg_operator_oprrest - 1] = ObjectIdGetDatum(InvalidOid);
|
|
|
|
values[Anum_pg_operator_oprjoin - 1] = ObjectIdGetDatum(InvalidOid);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2001-03-22 07:16:21 +01:00
|
|
|
/*
|
2002-04-17 01:08:12 +02:00
|
|
|
* open pg_operator
|
1997-09-07 07:04:48 +02:00
|
|
|
*/
|
2005-04-14 22:03:27 +02:00
|
|
|
pg_operator_desc = heap_open(OperatorRelationId, RowExclusiveLock);
|
1997-09-07 07:04:48 +02:00
|
|
|
tupDesc = pg_operator_desc->rd_att;
|
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
/*
|
|
|
|
* create a new operator tuple
|
|
|
|
*/
|
2008-11-02 02:45:28 +01:00
|
|
|
tup = heap_form_tuple(tupDesc, values, nulls);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2001-03-22 07:16:21 +01:00
|
|
|
/*
|
2001-10-22 21:34:13 +02:00
|
|
|
* insert our "shell" operator tuple
|
1997-09-07 07:04:48 +02:00
|
|
|
*/
|
2017-01-31 22:42:24 +01:00
|
|
|
operatorObjectId = CatalogTupleInsert(pg_operator_desc, tup);
|
1999-11-22 18:56:41 +01:00
|
|
|
|
2002-07-17 00:12:20 +02:00
|
|
|
/* Add dependencies for the entry */
|
2015-12-31 23:37:31 +01:00
|
|
|
makeOperatorDependencies(tup, false);
|
2002-07-17 00:12:20 +02:00
|
|
|
|
1999-12-16 23:20:03 +01:00
|
|
|
heap_freetuple(tup);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2010-11-25 17:48:49 +01:00
|
|
|
/* Post creation hook for new shell operator */
|
2013-03-07 02:52:06 +01:00
|
|
|
InvokeObjectPostCreateHook(OperatorRelationId, operatorObjectId, 0);
|
2010-11-25 17:48:49 +01:00
|
|
|
|
2008-08-16 02:01:38 +02:00
|
|
|
/*
|
|
|
|
* Make sure the tuple is visible for subsequent lookups/updates.
|
|
|
|
*/
|
|
|
|
CommandCounterIncrement();
|
|
|
|
|
2001-03-22 07:16:21 +01:00
|
|
|
/*
|
|
|
|
* close the operator relation and return the oid.
|
1997-09-07 07:04:48 +02:00
|
|
|
*/
|
1999-09-18 21:08:25 +02:00
|
|
|
heap_close(pg_operator_desc, RowExclusiveLock);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
1999-02-03 22:18:02 +01:00
|
|
|
return operatorObjectId;
|
1996-07-09 08:22:35 +02:00
|
|
|
}
|
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
/*
|
|
|
|
* OperatorCreate
|
|
|
|
*
|
|
|
|
* "X" indicates an optional argument (i.e. one that can be NULL or 0)
|
|
|
|
* operatorName name for new operator
|
|
|
|
* operatorNamespace namespace for new operator
|
|
|
|
* leftTypeId X left type ID
|
|
|
|
* rightTypeId X right type ID
|
2008-08-16 02:01:38 +02:00
|
|
|
* procedureId procedure ID for operator
|
2002-04-17 01:08:12 +02:00
|
|
|
* commutatorName X commutator operator
|
|
|
|
* negatorName X negator operator
|
2008-08-16 02:01:38 +02:00
|
|
|
* restrictionId X restriction selectivity procedure ID
|
|
|
|
* joinId X join selectivity procedure ID
|
2006-12-23 01:43:13 +01:00
|
|
|
* canMerge merge join can be used with this operator
|
2002-04-17 01:08:12 +02:00
|
|
|
* canHash hash join can be used with this operator
|
1996-07-09 08:22:35 +02:00
|
|
|
*
|
2008-08-16 02:01:38 +02:00
|
|
|
* The caller should have validated properties and permissions for the
|
|
|
|
* objects passed as OID references. We must handle the commutator and
|
|
|
|
* negator operator references specially, however, since those need not
|
|
|
|
* exist beforehand.
|
|
|
|
*
|
1996-07-09 08:22:35 +02:00
|
|
|
* This routine gets complicated because it allows the user to
|
|
|
|
* specify operators that do not exist. For example, if operator
|
|
|
|
* "op" is being defined, the negator operator "negop" and the
|
|
|
|
* commutator "commop" can also be defined without specifying
|
2014-05-06 18:12:18 +02:00
|
|
|
* any information other than their names. Since in order to
|
1996-07-09 08:22:35 +02:00
|
|
|
* add "op" to the PG_OPERATOR catalog, all the Oid's for these
|
|
|
|
* operators must be placed in the fields of "op", a forward
|
|
|
|
* declaration is done on the commutator and negator operators.
|
|
|
|
* This is called creating a shell, and its main effect is to
|
|
|
|
* create a tuple in the PG_OPERATOR catalog with minimal
|
|
|
|
* information about the operator (just its name and types).
|
|
|
|
* Forward declaration is used only for this purpose, it is
|
|
|
|
* not available to the user as it is for type definition.
|
|
|
|
*/
|
Change many routines to return ObjectAddress rather than OID
The changed routines are mostly those that can be directly called by
ProcessUtilitySlow; the intention is to make the affected object
information more precise, in support for future event trigger changes.
Originally it was envisioned that the OID of the affected object would
be enough, and in most cases that is correct, but upon actually
implementing the event trigger changes it turned out that ObjectAddress
is more widely useful.
Additionally, some command execution routines grew an output argument
that's an object address which provides further info about the executed
command. To wit:
* for ALTER DOMAIN / ADD CONSTRAINT, it corresponds to the address of
the new constraint
* for ALTER OBJECT / SET SCHEMA, it corresponds to the address of the
schema that originally contained the object.
* for ALTER EXTENSION {ADD, DROP} OBJECT, it corresponds to the address
of the object added to or dropped from the extension.
There's no user-visible change in this commit, and no functional change
either.
Discussion: 20150218213255.GC6717@tamriel.snowman.net
Reviewed-By: Stephen Frost, Andres Freund
2015-03-03 18:10:50 +01:00
|
|
|
ObjectAddress
|
2002-04-17 01:08:12 +02:00
|
|
|
OperatorCreate(const char *operatorName,
|
|
|
|
Oid operatorNamespace,
|
|
|
|
Oid leftTypeId,
|
|
|
|
Oid rightTypeId,
|
2008-08-16 02:01:38 +02:00
|
|
|
Oid procedureId,
|
2002-04-17 01:08:12 +02:00
|
|
|
List *commutatorName,
|
|
|
|
List *negatorName,
|
2008-08-16 02:01:38 +02:00
|
|
|
Oid restrictionId,
|
|
|
|
Oid joinId,
|
2006-12-23 01:43:13 +01:00
|
|
|
bool canMerge,
|
|
|
|
bool canHash)
|
1996-07-09 08:22:35 +02:00
|
|
|
{
|
1997-09-08 04:41:22 +02:00
|
|
|
Relation pg_operator_desc;
|
|
|
|
HeapTuple tup;
|
2015-12-31 23:37:31 +01:00
|
|
|
bool isUpdate;
|
2008-11-02 02:45:28 +01:00
|
|
|
bool nulls[Natts_pg_operator];
|
|
|
|
bool replaces[Natts_pg_operator];
|
1997-09-08 04:41:22 +02:00
|
|
|
Datum values[Natts_pg_operator];
|
|
|
|
Oid operatorObjectId;
|
1999-04-11 04:30:59 +02:00
|
|
|
bool operatorAlreadyDefined;
|
2002-04-17 01:08:12 +02:00
|
|
|
Oid operResultType;
|
|
|
|
Oid commutatorId,
|
2008-08-16 02:01:38 +02:00
|
|
|
negatorId;
|
1999-04-11 04:30:59 +02:00
|
|
|
bool selfCommutator = false;
|
1998-09-01 06:40:42 +02:00
|
|
|
NameData oname;
|
2002-04-17 01:08:12 +02:00
|
|
|
int i;
|
Change many routines to return ObjectAddress rather than OID
The changed routines are mostly those that can be directly called by
ProcessUtilitySlow; the intention is to make the affected object
information more precise, in support for future event trigger changes.
Originally it was envisioned that the OID of the affected object would
be enough, and in most cases that is correct, but upon actually
implementing the event trigger changes it turned out that ObjectAddress
is more widely useful.
Additionally, some command execution routines grew an output argument
that's an object address which provides further info about the executed
command. To wit:
* for ALTER DOMAIN / ADD CONSTRAINT, it corresponds to the address of
the new constraint
* for ALTER OBJECT / SET SCHEMA, it corresponds to the address of the
schema that originally contained the object.
* for ALTER EXTENSION {ADD, DROP} OBJECT, it corresponds to the address
of the object added to or dropped from the extension.
There's no user-visible change in this commit, and no functional change
either.
Discussion: 20150218213255.GC6717@tamriel.snowman.net
Reviewed-By: Stephen Frost, Andres Freund
2015-03-03 18:10:50 +01:00
|
|
|
ObjectAddress address;
|
2002-03-29 20:06:29 +01:00
|
|
|
|
|
|
|
/*
|
2002-04-17 01:08:12 +02:00
|
|
|
* Sanity checks
|
2002-03-29 20:06:29 +01:00
|
|
|
*/
|
|
|
|
if (!validOperatorName(operatorName))
|
2003-07-21 03:59:11 +02:00
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_NAME),
|
|
|
|
errmsg("\"%s\" is not a valid operator name",
|
|
|
|
operatorName)));
|
2002-03-29 20:06:29 +01:00
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
if (!(OidIsValid(leftTypeId) && OidIsValid(rightTypeId)))
|
|
|
|
{
|
|
|
|
/* If it's not a binary op, these things mustn't be set: */
|
|
|
|
if (commutatorName)
|
2003-07-21 03:59:11 +02:00
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
|
2005-10-15 04:49:52 +02:00
|
|
|
errmsg("only binary operators can have commutators")));
|
2008-08-16 02:01:38 +02:00
|
|
|
if (OidIsValid(joinId))
|
2003-07-21 03:59:11 +02:00
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
|
Phase 3 of pgindent updates.
Don't move parenthesized lines to the left, even if that means they
flow past the right margin.
By default, BSD indent lines up statement continuation lines that are
within parentheses so that they start just to the right of the preceding
left parenthesis. However, traditionally, if that resulted in the
continuation line extending to the right of the desired right margin,
then indent would push it left just far enough to not overrun the margin,
if it could do so without making the continuation line start to the left of
the current statement indent. That makes for a weird mix of indentations
unless one has been completely rigid about never violating the 80-column
limit.
This behavior has been pretty universally panned by Postgres developers.
Hence, disable it with indent's new -lpl switch, so that parenthesized
lines are always lined up with the preceding left paren.
This patch is much less interesting than the first round of indent
changes, but also bulkier, so I thought it best to separate the effects.
Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
2017-06-21 21:35:54 +02:00
|
|
|
errmsg("only binary operators can have join selectivity")));
|
2006-12-23 01:43:13 +01:00
|
|
|
if (canMerge)
|
2003-07-21 03:59:11 +02:00
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
|
2006-12-23 01:43:13 +01:00
|
|
|
errmsg("only binary operators can merge join")));
|
|
|
|
if (canHash)
|
2003-07-21 03:59:11 +02:00
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
|
2006-12-23 01:43:13 +01:00
|
|
|
errmsg("only binary operators can hash")));
|
2002-04-17 01:08:12 +02:00
|
|
|
}
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2008-08-16 02:01:38 +02:00
|
|
|
operResultType = get_func_rettype(procedureId);
|
|
|
|
|
|
|
|
if (operResultType != BOOLOID)
|
|
|
|
{
|
|
|
|
/* If it's not a boolean op, these things mustn't be set: */
|
|
|
|
if (negatorName)
|
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
|
|
|
|
errmsg("only boolean operators can have negators")));
|
|
|
|
if (OidIsValid(restrictionId))
|
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
|
2009-06-11 16:49:15 +02:00
|
|
|
errmsg("only boolean operators can have restriction selectivity")));
|
2008-08-16 02:01:38 +02:00
|
|
|
if (OidIsValid(joinId))
|
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
|
Phase 3 of pgindent updates.
Don't move parenthesized lines to the left, even if that means they
flow past the right margin.
By default, BSD indent lines up statement continuation lines that are
within parentheses so that they start just to the right of the preceding
left parenthesis. However, traditionally, if that resulted in the
continuation line extending to the right of the desired right margin,
then indent would push it left just far enough to not overrun the margin,
if it could do so without making the continuation line start to the left of
the current statement indent. That makes for a weird mix of indentations
unless one has been completely rigid about never violating the 80-column
limit.
This behavior has been pretty universally panned by Postgres developers.
Hence, disable it with indent's new -lpl switch, so that parenthesized
lines are always lined up with the preceding left paren.
This patch is much less interesting than the first round of indent
changes, but also bulkier, so I thought it best to separate the effects.
Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
2017-06-21 21:35:54 +02:00
|
|
|
errmsg("only boolean operators can have join selectivity")));
|
2008-08-16 02:01:38 +02:00
|
|
|
if (canMerge)
|
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
|
|
|
|
errmsg("only boolean operators can merge join")));
|
|
|
|
if (canHash)
|
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
|
|
|
|
errmsg("only boolean operators can hash")));
|
|
|
|
}
|
|
|
|
|
1997-09-07 07:04:48 +02:00
|
|
|
operatorObjectId = OperatorGet(operatorName,
|
2002-04-17 01:08:12 +02:00
|
|
|
operatorNamespace,
|
2002-03-29 20:06:29 +01:00
|
|
|
leftTypeId,
|
|
|
|
rightTypeId,
|
1999-04-11 04:30:59 +02:00
|
|
|
&operatorAlreadyDefined);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
1999-04-11 04:30:59 +02:00
|
|
|
if (operatorAlreadyDefined)
|
2003-07-21 03:59:11 +02:00
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_DUPLICATE_FUNCTION),
|
|
|
|
errmsg("operator %s already exists",
|
|
|
|
operatorName)));
|
1997-09-07 07:04:48 +02:00
|
|
|
|
1999-05-25 18:15:34 +02:00
|
|
|
/*
|
|
|
|
* At this point, if operatorObjectId is not InvalidOid then we are
|
2009-06-11 16:49:15 +02:00
|
|
|
* filling in a previously-created shell. Insist that the user own any
|
|
|
|
* such shell.
|
1997-09-07 07:04:48 +02:00
|
|
|
*/
|
2008-08-16 02:01:38 +02:00
|
|
|
if (OidIsValid(operatorObjectId) &&
|
|
|
|
!pg_oper_ownercheck(operatorObjectId, GetUserId()))
|
|
|
|
aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_OPER,
|
|
|
|
operatorName);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
|
|
|
/*
|
2014-05-06 18:12:18 +02:00
|
|
|
* Set up the other operators. If they do not currently exist, create
|
1999-04-11 04:30:59 +02:00
|
|
|
* shells in order to get ObjectId's.
|
1997-09-07 07:04:48 +02:00
|
|
|
*/
|
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
if (commutatorName)
|
1997-09-07 07:04:48 +02:00
|
|
|
{
|
2002-04-17 01:08:12 +02:00
|
|
|
/* commutator has reversed arg types */
|
|
|
|
commutatorId = get_other_operator(commutatorName,
|
|
|
|
rightTypeId, leftTypeId,
|
|
|
|
operatorName, operatorNamespace,
|
|
|
|
leftTypeId, rightTypeId,
|
|
|
|
true);
|
2002-09-04 22:31:48 +02:00
|
|
|
|
2008-08-16 02:01:38 +02:00
|
|
|
/* Permission check: must own other operator */
|
|
|
|
if (OidIsValid(commutatorId) &&
|
|
|
|
!pg_oper_ownercheck(commutatorId, GetUserId()))
|
|
|
|
aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_OPER,
|
|
|
|
NameListToString(commutatorName));
|
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
/*
|
2002-09-04 22:31:48 +02:00
|
|
|
* self-linkage to this operator; will fix below. Note that only
|
|
|
|
* self-linkage for commutation makes sense.
|
2002-04-17 01:08:12 +02:00
|
|
|
*/
|
|
|
|
if (!OidIsValid(commutatorId))
|
|
|
|
selfCommutator = true;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
commutatorId = InvalidOid;
|
1999-04-11 04:30:59 +02:00
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
if (negatorName)
|
|
|
|
{
|
|
|
|
/* negator has same arg types */
|
|
|
|
negatorId = get_other_operator(negatorName,
|
|
|
|
leftTypeId, rightTypeId,
|
|
|
|
operatorName, operatorNamespace,
|
|
|
|
leftTypeId, rightTypeId,
|
|
|
|
false);
|
2008-08-16 02:01:38 +02:00
|
|
|
|
|
|
|
/* Permission check: must own other operator */
|
|
|
|
if (OidIsValid(negatorId) &&
|
|
|
|
!pg_oper_ownercheck(negatorId, GetUserId()))
|
|
|
|
aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_OPER,
|
|
|
|
NameListToString(negatorName));
|
2002-04-17 01:08:12 +02:00
|
|
|
}
|
|
|
|
else
|
|
|
|
negatorId = InvalidOid;
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2008-08-16 02:01:38 +02:00
|
|
|
/*
|
|
|
|
* set up values in the operator tuple
|
|
|
|
*/
|
|
|
|
|
|
|
|
for (i = 0; i < Natts_pg_operator; ++i)
|
|
|
|
{
|
|
|
|
values[i] = (Datum) NULL;
|
2008-11-02 02:45:28 +01:00
|
|
|
replaces[i] = true;
|
|
|
|
nulls[i] = false;
|
2008-08-16 02:01:38 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
namestrcpy(&oname, operatorName);
|
2011-06-16 23:03:58 +02:00
|
|
|
values[Anum_pg_operator_oprname - 1] = NameGetDatum(&oname);
|
|
|
|
values[Anum_pg_operator_oprnamespace - 1] = ObjectIdGetDatum(operatorNamespace);
|
|
|
|
values[Anum_pg_operator_oprowner - 1] = ObjectIdGetDatum(GetUserId());
|
|
|
|
values[Anum_pg_operator_oprkind - 1] = CharGetDatum(leftTypeId ? (rightTypeId ? 'b' : 'r') : 'l');
|
|
|
|
values[Anum_pg_operator_oprcanmerge - 1] = BoolGetDatum(canMerge);
|
|
|
|
values[Anum_pg_operator_oprcanhash - 1] = BoolGetDatum(canHash);
|
|
|
|
values[Anum_pg_operator_oprleft - 1] = ObjectIdGetDatum(leftTypeId);
|
|
|
|
values[Anum_pg_operator_oprright - 1] = ObjectIdGetDatum(rightTypeId);
|
|
|
|
values[Anum_pg_operator_oprresult - 1] = ObjectIdGetDatum(operResultType);
|
|
|
|
values[Anum_pg_operator_oprcom - 1] = ObjectIdGetDatum(commutatorId);
|
|
|
|
values[Anum_pg_operator_oprnegate - 1] = ObjectIdGetDatum(negatorId);
|
|
|
|
values[Anum_pg_operator_oprcode - 1] = ObjectIdGetDatum(procedureId);
|
|
|
|
values[Anum_pg_operator_oprrest - 1] = ObjectIdGetDatum(restrictionId);
|
|
|
|
values[Anum_pg_operator_oprjoin - 1] = ObjectIdGetDatum(joinId);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2005-04-14 22:03:27 +02:00
|
|
|
pg_operator_desc = heap_open(OperatorRelationId, RowExclusiveLock);
|
1999-09-18 21:08:25 +02:00
|
|
|
|
1997-09-07 07:04:48 +02:00
|
|
|
/*
|
2008-08-16 02:01:38 +02:00
|
|
|
* If we are replacing an operator shell, update; else insert
|
1997-09-07 07:04:48 +02:00
|
|
|
*/
|
|
|
|
if (operatorObjectId)
|
|
|
|
{
|
2015-12-31 23:37:31 +01:00
|
|
|
isUpdate = true;
|
|
|
|
|
2010-02-14 19:42:19 +01:00
|
|
|
tup = SearchSysCacheCopy1(OPEROID,
|
|
|
|
ObjectIdGetDatum(operatorObjectId));
|
2002-04-17 01:08:12 +02:00
|
|
|
if (!HeapTupleIsValid(tup))
|
2003-07-21 03:59:11 +02:00
|
|
|
elog(ERROR, "cache lookup failed for operator %u",
|
2002-04-17 01:08:12 +02:00
|
|
|
operatorObjectId);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2008-11-02 02:45:28 +01:00
|
|
|
tup = heap_modify_tuple(tup,
|
2009-06-11 16:49:15 +02:00
|
|
|
RelationGetDescr(pg_operator_desc),
|
|
|
|
values,
|
|
|
|
nulls,
|
|
|
|
replaces);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2017-01-31 22:42:24 +01:00
|
|
|
CatalogTupleUpdate(pg_operator_desc, &tup->t_self, tup);
|
1997-09-07 07:04:48 +02:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2015-12-31 23:37:31 +01:00
|
|
|
isUpdate = false;
|
|
|
|
|
|
|
|
tup = heap_form_tuple(RelationGetDescr(pg_operator_desc),
|
|
|
|
values, nulls);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2017-01-31 22:42:24 +01:00
|
|
|
operatorObjectId = CatalogTupleInsert(pg_operator_desc, tup);
|
1999-11-22 18:56:41 +01:00
|
|
|
}
|
|
|
|
|
2002-07-17 00:12:20 +02:00
|
|
|
/* Add dependencies for the entry */
|
2015-12-31 23:37:31 +01:00
|
|
|
address = makeOperatorDependencies(tup, isUpdate);
|
2002-07-17 00:12:20 +02:00
|
|
|
|
2010-11-25 17:48:49 +01:00
|
|
|
/* Post creation hook for new operator */
|
2013-03-07 02:52:06 +01:00
|
|
|
InvokeObjectPostCreateHook(OperatorRelationId, operatorObjectId, 0);
|
2010-11-25 17:48:49 +01:00
|
|
|
|
1999-09-18 21:08:25 +02:00
|
|
|
heap_close(pg_operator_desc, RowExclusiveLock);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
|
|
|
/*
|
1999-04-11 04:30:59 +02:00
|
|
|
* If a commutator and/or negator link is provided, update the other
|
2005-10-15 04:49:52 +02:00
|
|
|
* operator(s) to point at this one, if they don't already have a link.
|
2007-11-07 13:24:24 +01:00
|
|
|
* This supports an alternative style of operator definition wherein the
|
2005-10-15 04:49:52 +02:00
|
|
|
* user first defines one operator without giving negator or commutator,
|
|
|
|
* then defines the other operator of the pair with the proper commutator
|
|
|
|
* or negator attribute. That style doesn't require creation of a shell,
|
|
|
|
* and it's the only style that worked right before Postgres version 6.5.
|
|
|
|
* This code also takes care of the situation where the new operator is
|
|
|
|
* its own commutator.
|
1997-09-07 07:04:48 +02:00
|
|
|
*/
|
1999-04-11 04:30:59 +02:00
|
|
|
if (selfCommutator)
|
|
|
|
commutatorId = operatorObjectId;
|
|
|
|
|
|
|
|
if (OidIsValid(commutatorId) || OidIsValid(negatorId))
|
2016-03-25 17:33:16 +01:00
|
|
|
OperatorUpd(operatorObjectId, commutatorId, negatorId, false);
|
2012-12-24 00:25:03 +01:00
|
|
|
|
Change many routines to return ObjectAddress rather than OID
The changed routines are mostly those that can be directly called by
ProcessUtilitySlow; the intention is to make the affected object
information more precise, in support for future event trigger changes.
Originally it was envisioned that the OID of the affected object would
be enough, and in most cases that is correct, but upon actually
implementing the event trigger changes it turned out that ObjectAddress
is more widely useful.
Additionally, some command execution routines grew an output argument
that's an object address which provides further info about the executed
command. To wit:
* for ALTER DOMAIN / ADD CONSTRAINT, it corresponds to the address of
the new constraint
* for ALTER OBJECT / SET SCHEMA, it corresponds to the address of the
schema that originally contained the object.
* for ALTER EXTENSION {ADD, DROP} OBJECT, it corresponds to the address
of the object added to or dropped from the extension.
There's no user-visible change in this commit, and no functional change
either.
Discussion: 20150218213255.GC6717@tamriel.snowman.net
Reviewed-By: Stephen Frost, Andres Freund
2015-03-03 18:10:50 +01:00
|
|
|
return address;
|
1996-07-09 08:22:35 +02:00
|
|
|
}
|
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
/*
|
|
|
|
* Try to lookup another operator (commutator, etc)
|
|
|
|
*
|
|
|
|
* If not found, check to see if it is exactly the operator we are trying
|
|
|
|
* to define; if so, return InvalidOid. (Note that this case is only
|
|
|
|
* sensible for a commutator, so we error out otherwise.) If it is not
|
|
|
|
* the same operator, create a shell operator.
|
|
|
|
*/
|
|
|
|
static Oid
|
|
|
|
get_other_operator(List *otherOp, Oid otherLeftTypeId, Oid otherRightTypeId,
|
|
|
|
const char *operatorName, Oid operatorNamespace,
|
|
|
|
Oid leftTypeId, Oid rightTypeId, bool isCommutator)
|
|
|
|
{
|
|
|
|
Oid other_oid;
|
|
|
|
bool otherDefined;
|
|
|
|
char *otherName;
|
|
|
|
Oid otherNamespace;
|
2002-04-27 05:45:03 +02:00
|
|
|
AclResult aclresult;
|
2002-04-17 01:08:12 +02:00
|
|
|
|
|
|
|
other_oid = OperatorLookup(otherOp,
|
|
|
|
otherLeftTypeId,
|
|
|
|
otherRightTypeId,
|
|
|
|
&otherDefined);
|
|
|
|
|
|
|
|
if (OidIsValid(other_oid))
|
|
|
|
{
|
|
|
|
/* other op already in catalogs */
|
|
|
|
return other_oid;
|
|
|
|
}
|
|
|
|
|
|
|
|
otherNamespace = QualifiedNameGetCreationNamespace(otherOp,
|
|
|
|
&otherName);
|
|
|
|
|
|
|
|
if (strcmp(otherName, operatorName) == 0 &&
|
|
|
|
otherNamespace == operatorNamespace &&
|
|
|
|
otherLeftTypeId == leftTypeId &&
|
|
|
|
otherRightTypeId == rightTypeId)
|
|
|
|
{
|
|
|
|
/*
|
2002-09-04 22:31:48 +02:00
|
|
|
* self-linkage to this operator; caller will fix later. Note that
|
|
|
|
* only self-linkage for commutation makes sense.
|
2002-04-17 01:08:12 +02:00
|
|
|
*/
|
|
|
|
if (!isCommutator)
|
2003-07-21 03:59:11 +02:00
|
|
|
ereport(ERROR,
|
|
|
|
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
|
Phase 3 of pgindent updates.
Don't move parenthesized lines to the left, even if that means they
flow past the right margin.
By default, BSD indent lines up statement continuation lines that are
within parentheses so that they start just to the right of the preceding
left parenthesis. However, traditionally, if that resulted in the
continuation line extending to the right of the desired right margin,
then indent would push it left just far enough to not overrun the margin,
if it could do so without making the continuation line start to the left of
the current statement indent. That makes for a weird mix of indentations
unless one has been completely rigid about never violating the 80-column
limit.
This behavior has been pretty universally panned by Postgres developers.
Hence, disable it with indent's new -lpl switch, so that parenthesized
lines are always lined up with the preceding left paren.
This patch is much less interesting than the first round of indent
changes, but also bulkier, so I thought it best to separate the effects.
Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
2017-06-21 21:35:54 +02:00
|
|
|
errmsg("operator cannot be its own negator or sort operator")));
|
2002-04-17 01:08:12 +02:00
|
|
|
return InvalidOid;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* not in catalogs, different from operator, so make shell */
|
2002-04-27 05:45:03 +02:00
|
|
|
|
|
|
|
aclresult = pg_namespace_aclcheck(otherNamespace, GetUserId(),
|
|
|
|
ACL_CREATE);
|
|
|
|
if (aclresult != ACLCHECK_OK)
|
2003-08-01 02:15:26 +02:00
|
|
|
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
|
|
|
|
get_namespace_name(otherNamespace));
|
2002-04-27 05:45:03 +02:00
|
|
|
|
2002-04-17 01:08:12 +02:00
|
|
|
other_oid = OperatorShellMake(otherName,
|
|
|
|
otherNamespace,
|
|
|
|
otherLeftTypeId,
|
|
|
|
otherRightTypeId);
|
|
|
|
return other_oid;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
1996-07-09 08:22:35 +02:00
|
|
|
* OperatorUpd
|
|
|
|
*
|
1997-09-07 07:04:48 +02:00
|
|
|
* For a given operator, look up its negator and commutator operators.
|
2016-03-25 17:33:16 +01:00
|
|
|
* When isDelete is false, update their negator and commutator fields to
|
|
|
|
* point back to the given operator; when isDelete is true, update those
|
|
|
|
* fields to no longer point back to the given operator.
|
|
|
|
*
|
|
|
|
* The !isDelete case solves a problem for users who need to insert two new
|
|
|
|
* operators that are the negator or commutator of each other, while the
|
|
|
|
* isDelete case is needed so as not to leave dangling OID links behind
|
|
|
|
* after dropping an operator.
|
1996-07-09 08:22:35 +02:00
|
|
|
*/
|
2016-03-25 17:33:16 +01:00
|
|
|
void
|
|
|
|
OperatorUpd(Oid baseId, Oid commId, Oid negId, bool isDelete)
|
1996-07-09 08:22:35 +02:00
|
|
|
{
|
1997-09-08 04:41:22 +02:00
|
|
|
Relation pg_operator_desc;
|
|
|
|
HeapTuple tup;
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2000-01-18 00:57:48 +01:00
|
|
|
/*
|
2016-03-25 17:33:16 +01:00
|
|
|
* If we're making an operator into its own commutator, then we need a
|
|
|
|
* command-counter increment here, since we've just inserted the tuple
|
|
|
|
* we're about to update. But when we're dropping an operator, we can
|
|
|
|
* skip this because we're at the beginning of the command.
|
2000-01-18 00:57:48 +01:00
|
|
|
*/
|
2016-03-25 17:33:16 +01:00
|
|
|
if (!isDelete)
|
|
|
|
CommandCounterIncrement();
|
2000-01-18 00:57:48 +01:00
|
|
|
|
2016-03-25 17:33:16 +01:00
|
|
|
/* Open the relation. */
|
2005-04-14 22:03:27 +02:00
|
|
|
pg_operator_desc = heap_open(OperatorRelationId, RowExclusiveLock);
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2016-03-25 17:33:16 +01:00
|
|
|
/* Get a writable copy of the commutator's tuple. */
|
|
|
|
if (OidIsValid(commId))
|
|
|
|
tup = SearchSysCacheCopy1(OPEROID, ObjectIdGetDatum(commId));
|
|
|
|
else
|
|
|
|
tup = NULL;
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2016-03-25 17:33:16 +01:00
|
|
|
/* Update the commutator's tuple if need be. */
|
|
|
|
if (HeapTupleIsValid(tup))
|
1997-09-07 07:04:48 +02:00
|
|
|
{
|
2016-03-25 17:33:16 +01:00
|
|
|
Form_pg_operator t = (Form_pg_operator) GETSTRUCT(tup);
|
|
|
|
bool update_commutator = false;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Out of due caution, we only change the commutator's oprcom field if
|
|
|
|
* it has the exact value we expected: InvalidOid when creating an
|
|
|
|
* operator, or baseId when dropping one.
|
|
|
|
*/
|
|
|
|
if (isDelete && t->oprcom == baseId)
|
1997-09-07 07:04:48 +02:00
|
|
|
{
|
2016-03-25 17:33:16 +01:00
|
|
|
t->oprcom = InvalidOid;
|
|
|
|
update_commutator = true;
|
|
|
|
}
|
|
|
|
else if (!isDelete && !OidIsValid(t->oprcom))
|
|
|
|
{
|
|
|
|
t->oprcom = baseId;
|
|
|
|
update_commutator = true;
|
1996-07-09 08:22:35 +02:00
|
|
|
}
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2016-03-25 17:33:16 +01:00
|
|
|
/* If any columns were found to need modification, update tuple. */
|
|
|
|
if (update_commutator)
|
|
|
|
{
|
2017-01-31 22:42:24 +01:00
|
|
|
CatalogTupleUpdate(pg_operator_desc, &tup->t_self, tup);
|
2016-03-25 17:33:16 +01:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Do CCI to make the updated tuple visible. We must do this in
|
|
|
|
* case the commutator is also the negator. (Which would be a
|
|
|
|
* logic error on the operator definer's part, but that's not a
|
|
|
|
* good reason to fail here.) We would need a CCI anyway in the
|
|
|
|
* deletion case for a self-commutator with no negator.
|
|
|
|
*/
|
|
|
|
CommandCounterIncrement();
|
|
|
|
}
|
1997-09-07 07:04:48 +02:00
|
|
|
}
|
|
|
|
|
2016-03-25 17:33:16 +01:00
|
|
|
/*
|
|
|
|
* Similarly find and update the negator, if any.
|
|
|
|
*/
|
|
|
|
if (OidIsValid(negId))
|
|
|
|
tup = SearchSysCacheCopy1(OPEROID, ObjectIdGetDatum(negId));
|
|
|
|
else
|
|
|
|
tup = NULL;
|
1997-09-07 07:04:48 +02:00
|
|
|
|
2016-03-25 17:33:16 +01:00
|
|
|
if (HeapTupleIsValid(tup))
|
1997-09-07 07:04:48 +02:00
|
|
|
{
|
2016-03-25 17:33:16 +01:00
|
|
|
Form_pg_operator t = (Form_pg_operator) GETSTRUCT(tup);
|
|
|
|
bool update_negator = false;
|
2002-04-17 01:08:12 +02:00
|
|
|
|
2016-03-25 17:33:16 +01:00
|
|
|
/*
|
|
|
|
* Out of due caution, we only change the negator's oprnegate field if
|
|
|
|
* it has the exact value we expected: InvalidOid when creating an
|
|
|
|
* operator, or baseId when dropping one.
|
|
|
|
*/
|
|
|
|
if (isDelete && t->oprnegate == baseId)
|
|
|
|
{
|
|
|
|
t->oprnegate = InvalidOid;
|
|
|
|
update_negator = true;
|
|
|
|
}
|
|
|
|
else if (!isDelete && !OidIsValid(t->oprnegate))
|
|
|
|
{
|
|
|
|
t->oprnegate = baseId;
|
|
|
|
update_negator = true;
|
|
|
|
}
|
1999-11-22 18:56:41 +01:00
|
|
|
|
2016-03-25 17:33:16 +01:00
|
|
|
/* If any columns were found to need modification, update tuple. */
|
|
|
|
if (update_negator)
|
|
|
|
{
|
2017-01-31 22:42:24 +01:00
|
|
|
CatalogTupleUpdate(pg_operator_desc, &tup->t_self, tup);
|
2016-03-25 17:33:16 +01:00
|
|
|
|
|
|
|
/*
|
|
|
|
* In the deletion case, do CCI to make the updated tuple visible.
|
|
|
|
* We must do this in case the operator is its own negator. (Which
|
|
|
|
* would be a logic error on the operator definer's part, but
|
|
|
|
* that's not a good reason to fail here.)
|
|
|
|
*/
|
|
|
|
if (isDelete)
|
|
|
|
CommandCounterIncrement();
|
|
|
|
}
|
1996-07-09 08:22:35 +02:00
|
|
|
}
|
|
|
|
|
2016-03-25 17:33:16 +01:00
|
|
|
/* Close relation and release catalog lock. */
|
1999-09-18 21:08:25 +02:00
|
|
|
heap_close(pg_operator_desc, RowExclusiveLock);
|
1996-07-09 08:22:35 +02:00
|
|
|
}
|
2002-07-17 00:12:20 +02:00
|
|
|
|
|
|
|
/*
|
2015-12-31 23:37:31 +01:00
|
|
|
* Create dependencies for an operator (either a freshly inserted
|
|
|
|
* complete operator, a new shell operator, a just-updated shell,
|
|
|
|
* or an operator that's being modified by ALTER OPERATOR).
|
2002-07-17 00:12:20 +02:00
|
|
|
*
|
2002-07-18 18:47:26 +02:00
|
|
|
* NB: the OidIsValid tests in this routine are necessary, in case
|
2002-07-17 00:12:20 +02:00
|
|
|
* the given operator is a shell.
|
|
|
|
*/
|
2015-12-31 23:37:31 +01:00
|
|
|
ObjectAddress
|
|
|
|
makeOperatorDependencies(HeapTuple tuple, bool isUpdate)
|
2002-07-17 00:12:20 +02:00
|
|
|
{
|
2002-09-04 22:31:48 +02:00
|
|
|
Form_pg_operator oper = (Form_pg_operator) GETSTRUCT(tuple);
|
|
|
|
ObjectAddress myself,
|
|
|
|
referenced;
|
2002-07-17 00:12:20 +02:00
|
|
|
|
2005-04-14 22:03:27 +02:00
|
|
|
myself.classId = OperatorRelationId;
|
2002-07-20 07:16:59 +02:00
|
|
|
myself.objectId = HeapTupleGetOid(tuple);
|
2002-07-17 00:12:20 +02:00
|
|
|
myself.objectSubId = 0;
|
|
|
|
|
2011-08-22 16:55:47 +02:00
|
|
|
/*
|
2015-12-31 23:37:31 +01:00
|
|
|
* If we are updating the operator, delete any existing entries, except
|
2011-08-22 16:55:47 +02:00
|
|
|
* for extension membership which should remain the same.
|
|
|
|
*/
|
2015-12-31 23:37:31 +01:00
|
|
|
if (isUpdate)
|
|
|
|
{
|
|
|
|
deleteDependencyRecordsFor(myself.classId, myself.objectId, true);
|
|
|
|
deleteSharedDependencyRecordsFor(myself.classId, myself.objectId, 0);
|
|
|
|
}
|
2002-07-17 00:12:20 +02:00
|
|
|
|
2002-07-18 18:47:26 +02:00
|
|
|
/* Dependency on namespace */
|
|
|
|
if (OidIsValid(oper->oprnamespace))
|
|
|
|
{
|
2005-04-14 22:03:27 +02:00
|
|
|
referenced.classId = NamespaceRelationId;
|
2002-07-18 18:47:26 +02:00
|
|
|
referenced.objectId = oper->oprnamespace;
|
|
|
|
referenced.objectSubId = 0;
|
|
|
|
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
|
|
|
|
}
|
|
|
|
|
2002-07-17 00:12:20 +02:00
|
|
|
/* Dependency on left type */
|
|
|
|
if (OidIsValid(oper->oprleft))
|
|
|
|
{
|
2005-04-14 03:38:22 +02:00
|
|
|
referenced.classId = TypeRelationId;
|
2002-07-17 00:12:20 +02:00
|
|
|
referenced.objectId = oper->oprleft;
|
|
|
|
referenced.objectSubId = 0;
|
|
|
|
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Dependency on right type */
|
|
|
|
if (OidIsValid(oper->oprright))
|
|
|
|
{
|
2005-04-14 03:38:22 +02:00
|
|
|
referenced.classId = TypeRelationId;
|
2002-07-17 00:12:20 +02:00
|
|
|
referenced.objectId = oper->oprright;
|
|
|
|
referenced.objectSubId = 0;
|
|
|
|
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Dependency on result type */
|
|
|
|
if (OidIsValid(oper->oprresult))
|
|
|
|
{
|
2005-04-14 03:38:22 +02:00
|
|
|
referenced.classId = TypeRelationId;
|
2002-07-17 00:12:20 +02:00
|
|
|
referenced.objectId = oper->oprresult;
|
|
|
|
referenced.objectSubId = 0;
|
|
|
|
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* NOTE: we do not consider the operator to depend on the associated
|
2006-12-23 01:43:13 +01:00
|
|
|
* operators oprcom and oprnegate. We would not want to delete this
|
|
|
|
* operator if those go away, but only reset the link fields; which is not
|
|
|
|
* a function that the dependency code can presently handle. (Something
|
2007-11-15 22:14:46 +01:00
|
|
|
* could perhaps be done with objectSubId though.) For now, it's okay to
|
2006-12-23 01:43:13 +01:00
|
|
|
* let those links dangle if a referenced operator is removed.
|
2002-07-17 00:12:20 +02:00
|
|
|
*/
|
|
|
|
|
|
|
|
/* Dependency on implementation function */
|
|
|
|
if (OidIsValid(oper->oprcode))
|
|
|
|
{
|
2005-04-14 03:38:22 +02:00
|
|
|
referenced.classId = ProcedureRelationId;
|
2002-07-17 00:12:20 +02:00
|
|
|
referenced.objectId = oper->oprcode;
|
|
|
|
referenced.objectSubId = 0;
|
|
|
|
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Dependency on restriction selectivity function */
|
|
|
|
if (OidIsValid(oper->oprrest))
|
|
|
|
{
|
2005-04-14 03:38:22 +02:00
|
|
|
referenced.classId = ProcedureRelationId;
|
2002-07-17 00:12:20 +02:00
|
|
|
referenced.objectId = oper->oprrest;
|
|
|
|
referenced.objectSubId = 0;
|
|
|
|
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Dependency on join selectivity function */
|
|
|
|
if (OidIsValid(oper->oprjoin))
|
|
|
|
{
|
2005-04-14 03:38:22 +02:00
|
|
|
referenced.classId = ProcedureRelationId;
|
2002-07-17 00:12:20 +02:00
|
|
|
referenced.objectId = oper->oprjoin;
|
|
|
|
referenced.objectSubId = 0;
|
|
|
|
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
|
|
|
|
}
|
2005-07-07 22:40:02 +02:00
|
|
|
|
|
|
|
/* Dependency on owner */
|
|
|
|
recordDependencyOnOwner(OperatorRelationId, HeapTupleGetOid(tuple),
|
|
|
|
oper->oprowner);
|
2011-02-08 22:08:41 +01:00
|
|
|
|
|
|
|
/* Dependency on extension */
|
2011-07-23 22:59:39 +02:00
|
|
|
recordDependencyOnCurrentExtension(&myself, true);
|
Change many routines to return ObjectAddress rather than OID
The changed routines are mostly those that can be directly called by
ProcessUtilitySlow; the intention is to make the affected object
information more precise, in support for future event trigger changes.
Originally it was envisioned that the OID of the affected object would
be enough, and in most cases that is correct, but upon actually
implementing the event trigger changes it turned out that ObjectAddress
is more widely useful.
Additionally, some command execution routines grew an output argument
that's an object address which provides further info about the executed
command. To wit:
* for ALTER DOMAIN / ADD CONSTRAINT, it corresponds to the address of
the new constraint
* for ALTER OBJECT / SET SCHEMA, it corresponds to the address of the
schema that originally contained the object.
* for ALTER EXTENSION {ADD, DROP} OBJECT, it corresponds to the address
of the object added to or dropped from the extension.
There's no user-visible change in this commit, and no functional change
either.
Discussion: 20150218213255.GC6717@tamriel.snowman.net
Reviewed-By: Stephen Frost, Andres Freund
2015-03-03 18:10:50 +01:00
|
|
|
|
|
|
|
return myself;
|
2002-07-17 00:12:20 +02:00
|
|
|
}
|