4 Copyright (C) 1999 MDlink online service center GmbH and Helge Hess
6 Author: Helge Hess (helge@mdlink.de)
8 This file is part of the PostgreSQL72 Adaptor Library
10 This library is free software; you can redistribute it and/or
11 modify it under the terms of the GNU Library General Public
12 License as published by the Free Software Foundation; either
13 version 2 of the License, or (at your option) any later version.
15 This library is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Library General Public License for more details.
20 You should have received a copy of the GNU Library General Public
21 License along with this library; see the file COPYING.LIB.
22 If not, write to the Free Software Foundation,
23 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 // $Id: PostgreSQL72Context.m 1 2004-08-20 10:38:46Z znek $
27 #import "PostgreSQL72Context.h"
28 #import "PostgreSQL72Channel.h"
31 @implementation PostgreSQL72Context
33 - (void)channelDidInit:_channel {
34 if ([channels count] > 0) {
35 [NSException raise:@"TooManyOpenChannelsException"
36 format:@"SybaseAdaptor10 only supports one channel per context"];
38 [super channelDidInit:_channel];
41 - (BOOL)primaryBeginTransaction {
44 result = [[[channels lastObject]
45 nonretainedObjectValue]
46 evaluateExpression:@"BEGIN TRANSACTION"];
51 - (BOOL)primaryCommitTransaction {
54 result = [[[channels lastObject]
55 nonretainedObjectValue]
56 evaluateExpression:@"COMMIT TRANSACTION"];
61 - (BOOL)primaryRollbackTransaction {
64 result = [[[channels lastObject]
65 nonretainedObjectValue]
66 evaluateExpression:@"ROLLBACK TRANSACTION"];
70 - (BOOL)canNestTransactions {
76 - (id)copyWithZone:(NSZone *)zone {
80 @end /* PostgreSQL72Context */
82 void __link_PostgreSQL72Context() {
83 // used to force linking of object file
84 __link_PostgreSQL72Context();