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Support toasting of shared system relations, and provide toast tables for

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pg_database, pg_shadow, pg_group, all of which now have potentially-long
fields.  Along the way, get rid of SharedSystemRelationNames list: shared
rels are now identified in their include/pg_catalog/*.h files by a
BKI_SHARED_RELATION macro, while indexes and toast rels inherit sharedness
automatically from their parent table.  Fix some bugs with failure to detoast
pg_group.grolist during ALTER GROUP.
This commit is contained in:
Tom Lane
2002-04-27 21:24:34 +00:00
parent 108871f4fc
commit c06f6a6bc2
27 changed files with 403 additions and 531 deletions
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52
src/backend/bootstrap/bootparse.y
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@@ -1,15 +1,15 @@
%{
/*-------------------------------------------------------------------------
*
* backendparse.y
* yacc parser grammer for the "backend" initialization program.
* bootparse.y
* yacc parser grammar for the "backend" initialization program.
*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/bootstrap/bootparse.y,v 1.45 2002/04/17 20:57:56 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/bootstrap/bootparse.y,v 1.46 2002/04/27 21:24:33 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -88,8 +88,9 @@ int num_columns_read = 0;
%type <list> boot_index_params
%type <ielem> boot_index_param
%type <ival> boot_const boot_ident
%type <ival> optbootstrap optwithoutoids boot_tuple boot_tuplelist
%type <ival> boot_const boot_ident
%type <ival> optbootstrap optsharedrelation optwithoutoids
%type <ival> boot_tuple boot_tuplelist
%type <oidval> optoideq
%token <ival> CONST ID
@@ -97,7 +98,7 @@ int num_columns_read = 0;
%token STRING XDEFINE
%token XDECLARE INDEX ON USING XBUILD INDICES UNIQUE
%token COMMA EQUALS LPAREN RPAREN
%token OBJ_ID XBOOTSTRAP XWITHOUT_OIDS NULLVAL
%token OBJ_ID XBOOTSTRAP XSHARED_RELATION XWITHOUT_OIDS NULLVAL
%start TopLevel
%nonassoc low
@@ -150,16 +151,14 @@ Boot_CloseStmt:
;
Boot_CreateStmt:
XCREATE optbootstrap optwithoutoids boot_ident LPAREN
XCREATE optbootstrap optsharedrelation optwithoutoids boot_ident LPAREN
{
do_start();
numattr = 0;
if ($2)
elog(DEBUG3, "creating bootstrap relation %s...",
LexIDStr($4));
else
elog(DEBUG3, "creating relation %s...",
LexIDStr($4));
elog(DEBUG3, "creating%s%s relation %s...",
$2 ? " bootstrap" : "",
$3 ? " shared" : "",
LexIDStr($5));
}
boot_typelist
{
@@ -171,21 +170,22 @@ Boot_CreateStmt:
if ($2)
{
extern Relation reldesc;
TupleDesc tupdesc;
if (reldesc)
if (boot_reldesc)
{
elog(DEBUG3, "create bootstrap: warning, open relation exists, closing first");
closerel(NULL);
}
tupdesc = CreateTupleDesc(numattr, attrtypes);
reldesc = heap_create(LexIDStr($4),
PG_CATALOG_NAMESPACE,
tupdesc,
true, true);
reldesc->rd_rel->relhasoids = ! ($3);
boot_reldesc = heap_create(LexIDStr($5),
PG_CATALOG_NAMESPACE,
tupdesc,
$3,
true,
true);
boot_reldesc->rd_rel->relhasoids = ! ($4);
elog(DEBUG3, "bootstrap relation created");
}
else
@@ -194,11 +194,12 @@ Boot_CreateStmt:
TupleDesc tupdesc;
tupdesc = CreateTupleDesc(numattr,attrtypes);
id = heap_create_with_catalog(LexIDStr($4),
id = heap_create_with_catalog(LexIDStr($5),
PG_CATALOG_NAMESPACE,
tupdesc,
RELKIND_RELATION,
! ($3),
$3,
! ($4),
true);
elog(DEBUG3, "relation created with oid %u", id);
}
@@ -221,7 +222,7 @@ Boot_InsertStmt:
if (num_columns_read != numattr)
elog(ERROR, "incorrect number of columns in row (expected %d, got %d)",
numattr, num_columns_read);
if (reldesc == (Relation)NULL)
if (boot_reldesc == (Relation) NULL)
{
elog(ERROR, "relation not open");
err_out();
@@ -283,6 +284,11 @@ optbootstrap:
| { $$ = 0; }
;
optsharedrelation:
XSHARED_RELATION { $$ = 1; }
| { $$ = 0; }
;
optwithoutoids:
XWITHOUT_OIDS { $$ = 1; }
| { $$ = 0; }