database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-15 19:21:59 +03:00
Code Activity

Read-only transactions, as defined in SQL.

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

87
src/backend/parser/gram.y
View File

@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.394 2003/01/10 21:08:13 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.395 2003/01/10 22:03:27 petere Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -162,7 +162,7 @@ static void doNegateFloat(Value *v);
%type <defelt> createdb_opt_item copy_opt_item
%type <ival> opt_lock lock_type cast_context
%type <boolean> opt_force opt_or_replace
%type <boolean> opt_force opt_or_replace transaction_access_mode
%type <list> user_list
@ -215,7 +215,8 @@ static void doNegateFloat(Value *v);
target_list update_target_list insert_column_list
insert_target_list def_list opt_indirection
group_clause TriggerFuncArgs select_limit
opt_select_limit opclass_item_list trans_options
opt_select_limit opclass_item_list transaction_mode_list
transaction_mode_list_or_empty
TableFuncElementList
prep_type_clause prep_type_list
execute_param_clause
@ -863,18 +864,18 @@ set_rest: ColId TO var_list_or_default
n->args = makeList1($3);
$$ = n;
}
| TRANSACTION ISOLATION LEVEL iso_level opt_mode
| TRANSACTION transaction_mode_list
{
VariableSetStmt *n = makeNode(VariableSetStmt);
n->name = "TRANSACTION ISOLATION LEVEL";
n->args = makeList1(makeStringConst($4, NULL));
n->name = "TRANSACTION";
n->args = $2;
$$ = n;
}
| SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL iso_level
| SESSION CHARACTERISTICS AS TRANSACTION transaction_mode_list
{
VariableSetStmt *n = makeNode(VariableSetStmt);
n->name = "default_transaction_isolation";
n->args = makeList1(makeStringConst($7, NULL));
n->name = "SESSION CHARACTERISTICS";
n->args = $5;
$$ = n;
}
| NAMES opt_encoding
@ -922,16 +923,6 @@ iso_level: READ COMMITTED { $$ = "read committed"; }
| SERIALIZABLE { $$ = "serializable"; }
;
opt_mode: READ WRITE
{}
| READ ONLY
{
elog(ERROR, "SET TRANSACTION/READ ONLY not yet supported");
}
| /*EMPTY*/
{}
;
opt_boolean:
TRUE_P { $$ = "true"; }
| FALSE_P { $$ = "false"; }
@ -1020,7 +1011,7 @@ VariableShowStmt:
| SHOW TRANSACTION ISOLATION LEVEL
{
VariableShowStmt *n = makeNode(VariableShowStmt);
n->name = "TRANSACTION ISOLATION LEVEL";
n->name = "transaction_isolation";
$$ = (Node *) n;
}
| SHOW SESSION AUTHORIZATION
@ -1053,7 +1044,7 @@ VariableResetStmt:
| RESET TRANSACTION ISOLATION LEVEL
{
VariableResetStmt *n = makeNode(VariableResetStmt);
n->name = "TRANSACTION ISOLATION LEVEL";
n->name = "transaction_isolation";
$$ = (Node *) n;
}
| RESET SESSION AUTHORIZATION
@ -3500,42 +3491,42 @@ UnlistenStmt:
*****************************************************************************/
TransactionStmt:
ABORT_TRANS opt_trans
ABORT_TRANS opt_transaction
{
TransactionStmt *n = makeNode(TransactionStmt);
n->command = ROLLBACK;
n->options = NIL;
$$ = (Node *)n;
}
| BEGIN_TRANS opt_trans
| BEGIN_TRANS opt_transaction
{
TransactionStmt *n = makeNode(TransactionStmt);
n->command = BEGIN_TRANS;
n->options = NIL;
$$ = (Node *)n;
}
| START TRANSACTION trans_options
| START TRANSACTION transaction_mode_list_or_empty
{
TransactionStmt *n = makeNode(TransactionStmt);
n->command = START;
n->options = $3;
$$ = (Node *)n;
}
| COMMIT opt_trans
| COMMIT opt_transaction
{
TransactionStmt *n = makeNode(TransactionStmt);
n->command = COMMIT;
n->options = NIL;
$$ = (Node *)n;
}
| END_TRANS opt_trans
| END_TRANS opt_transaction
{
TransactionStmt *n = makeNode(TransactionStmt);
n->command = COMMIT;
n->options = NIL;
$$ = (Node *)n;
}
| ROLLBACK opt_trans
| ROLLBACK opt_transaction
{
TransactionStmt *n = makeNode(TransactionStmt);
n->command = ROLLBACK;
@ -3544,16 +3535,46 @@ TransactionStmt:
}
;
trans_options: ISOLATION LEVEL iso_level
{ $$ = makeList1(makeStringConst($3, NULL)); }
| /* EMPTY */ { $$ = NIL; }
;
opt_trans: WORK {}
opt_transaction: WORK {}
| TRANSACTION {}
| /*EMPTY*/ {}
;
transaction_mode_list:
ISOLATION LEVEL iso_level
{ $$ = makeList1(makeDefElem("transaction_isolation",
makeStringConst($3, NULL))); }
| transaction_access_mode
{ $$ = makeList1(makeDefElem("transaction_read_only",
makeIntConst($1))); }
| ISOLATION LEVEL iso_level transaction_access_mode
{
$$ = makeList2(makeDefElem("transaction_isolation",
makeStringConst($3, NULL)),
makeDefElem("transaction_read_only",
makeIntConst($4)));
}
| transaction_access_mode ISOLATION LEVEL iso_level
{
$$ = makeList2(makeDefElem("transaction_read_only",
makeIntConst($1)),
makeDefElem("transaction_isolation",
makeStringConst($4, NULL)));
}
;
transaction_mode_list_or_empty:
transaction_mode_list
| /* EMPTY */
{ $$ = NIL; }
;
transaction_access_mode:
READ ONLY { $$ = TRUE; }
| READ WRITE { $$ = FALSE; }
;
/*****************************************************************************
*
* QUERY: