4 Copyright (C) 1999 MDlink online service center GmbH and Helge Hess
5 Copyright (C) 2007 Helge Hess
7 Author: Helge Hess (helge@mdlink.de)
9 This file is part of the PostgreSQL72 Adaptor Library
11 This library is free software; you can redistribute it and/or
12 modify it under the terms of the GNU Library General Public
13 License as published by the Free Software Foundation; either
14 version 2 of the License, or (at your option) any later version.
16 This library is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 Library General Public License for more details.
21 You should have received a copy of the GNU Library General Public
22 License along with this library; see the file COPYING.LIB.
23 If not, write to the Free Software Foundation,
24 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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 error = [[[channels lastObject]
45 nonretainedObjectValue]
46 evaluateExpressionX:@"BEGIN TRANSACTION"];
50 NSLog(@"%s: could not begin transaction: %@", __PRETTY_FUNCTION__, error);
54 - (BOOL)primaryCommitTransaction {
57 error = [[[channels lastObject]
58 nonretainedObjectValue]
59 evaluateExpressionX:@"COMMIT TRANSACTION"];
64 NSLog(@"%s: could not commit transaction: %@", __PRETTY_FUNCTION__, error);
68 - (BOOL)primaryRollbackTransaction {
71 error = [[[channels lastObject]
72 nonretainedObjectValue]
73 evaluateExpressionX:@"ROLLBACK TRANSACTION"];
78 NSLog(@"%s: could not rollback transaction: %@", __PRETTY_FUNCTION__, error);
82 - (BOOL)canNestTransactions {
86 /* NSCopying methods */
88 - (id)copyWithZone:(NSZone *)zone {
89 // called when the object is used in some datastructures?
93 @end /* PostgreSQL72Context */
95 void __link_PostgreSQL72Context() {
96 // used to force linking of object file
97 __link_PostgreSQL72Context();