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Read-only transactions, as defined in SQL.

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This commit is contained in:
Peter Eisentraut
2003-01-10 22:03:30 +00:00
parent b7ca9bdf18
commit b65cd56240
16 changed files with 427 additions and 146 deletions
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18
src/backend/utils/misc/guc.c
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@@ -5,7 +5,7 @@
* command, configuration file, and command line options.
* See src/backend/utils/misc/README for more information.
*
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.109 2002/12/27 14:06:34 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.110 2003/01/10 22:03:29 petere Exp $
*
* Copyright 2000 by PostgreSQL Global Development Group
* Written by Peter Eisentraut <peter_e@gmx.net>.
@@ -516,6 +516,14 @@ static struct config_bool
{"autocommit", PGC_USERSET}, &autocommit,
true, NULL, NULL
},
{
{"default_transaction_read_only", PGC_USERSET}, &DefaultXactReadOnly,
false, NULL, NULL
},
{
{"transaction_read_only", PGC_USERSET, GUC_NO_RESET_ALL}, &XactReadOnly,
false, NULL, NULL
},
{
{NULL, 0}, NULL, false, NULL, NULL
@@ -841,7 +849,7 @@ static struct config_string
},
{
{"TRANSACTION ISOLATION LEVEL", PGC_USERSET, GUC_NO_RESET_ALL},
{"transaction_isolation", PGC_USERSET, GUC_NO_RESET_ALL},
&XactIsoLevel_string,
NULL, assign_XactIsoLevel, show_XactIsoLevel
},
@@ -1157,10 +1165,12 @@ InitializeGUCOptions(void)
guc_string_workspace = NULL;
/*
* Prevent any attempt to override TRANSACTION ISOLATION LEVEL from
* Prevent any attempt to override the transaction modes from
* non-interactive sources.
*/
SetConfigOption("TRANSACTION ISOLATION LEVEL", "default",
SetConfigOption("transaction_isolation", "default",
PGC_POSTMASTER, PGC_S_OVERRIDE);
SetConfigOption("transaction_read_only", "no",
PGC_POSTMASTER, PGC_S_OVERRIDE);
/*