blob: 4eb0a1e653a4793de4a6b5006e5aa299224e6ec1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtAddOn.JsonDb module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QKEYVALUESTORETXN_P_H
#define QKEYVALUESTORETXN_P_H
#include "qkeyvaluestore.h"
#include "qkeyvaluestore_p.h"
#include <QMap>
#include <QHash>
#include <QByteArray>
#include <QFile>
class QKeyValueStore;
class QKeyValueStoreTxnPrivate {
public:
QKeyValueStoreTxnPrivate(bool readonly = true);
~QKeyValueStoreTxnPrivate();
bool put(const QByteArray &key, const QByteArray &value);
bool remove(const QByteArray &key);
bool get(const QByteArray &key, QByteArray *value);
bool commit(quint32 tag);
bool abort();
bool m_readonly;
quint32 m_incommingBytes;
quint32 m_tag;
QKeyValueStore *m_btree;
// This is all the data we need, these are all the entries we care about when writing.
QMap<QByteArray, QKeyValueStoreEntry *> m_incomming;
#if defined(JSONDB_USE_KVS_MULTIPLE_TRANSACTIONS)
/*
* The reason this is protected is because for this version we assume
* only one transaction at all times, therefore there is no need to
* keep track of the changes.
*/
// We need this in order to preserve the state.
QMap<QByteArray, qint64> m_offsets;
#else
// Since we modified the QMap directly we need to mark it.
bool m_localModifications;
#endif
QKeyValueStorePrivate *m_store;
};
#endif // QKEYVALUESTORETXN_P_H
|
