summaryrefslogtreecommitdiffstats
path: root/src/sql/models/qsqltablemodel_p.h
blob: ba2fdf5df39bb274ea59ae6f0fa4fb41ca8c5efa (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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtSql 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 QSQLTABLEMODEL_P_H
#define QSQLTABLEMODEL_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of qsql*model.h .  This header file may change from version to version
// without notice, or even be removed.
//
// We mean it.
//

#include "QtCore/qmap.h"
#include "private/qsqlquerymodel_p.h"

QT_BEGIN_NAMESPACE

class QSqlTableModelPrivate: public QSqlQueryModelPrivate
{
    Q_DECLARE_PUBLIC(QSqlTableModel)

public:
    QSqlTableModelPrivate()
        : sortColumn(-1),
          sortOrder(Qt::AscendingOrder),
          strategy(QSqlTableModel::OnRowChange),
          busyInsertingRows(false)
    {}
    void clear();
    QSqlRecord primaryValues(int index) const;
    virtual void clearCache();
    QSqlRecord record(const QVector<QVariant> &values) const;

    bool exec(const QString &stmt, bool prepStatement,
              const QSqlRecord &rec, const QSqlRecord &whereValues);
    virtual void revertCachedRow(int row);
    virtual int nameToIndex(const QString &name) const;
    QString strippedFieldName(const QString &name) const;
    int insertCount(int maxRow = -1) const;
    void initRecordAndPrimaryIndex();

    QSqlDatabase db;

    int sortColumn;
    Qt::SortOrder sortOrder;

    QSqlTableModel::EditStrategy strategy;
    bool busyInsertingRows;

    QSqlQuery editQuery;
    QSqlIndex primaryIndex;
    QString tableName;
    QString filter;

    enum Op { None, Insert, Update, Delete };

    class ModifiedRow
    {
    public:
        inline ModifiedRow(Op o = None, const QSqlRecord &r = QSqlRecord())
            : m_op(None), m_db_values(r), m_insert(o == Insert)
        { setOp(o); }
        inline Op op() const { return m_op; }
        inline void setOp(Op o)
        {
            if (o == m_op)
                return;
            m_submitted = (o != Insert && o != Delete);
            m_op = o;
            m_rec = m_db_values;
            setGenerated(m_rec, m_op == Delete);
        }
        inline QSqlRecord rec() const { return m_rec; }
        inline QSqlRecord& recRef() { return m_rec; }
        inline void setValue(int c, const QVariant &v)
        {
            m_submitted = false;
            m_rec.setValue(c, v);
            m_rec.setGenerated(c, true);
        }
        inline bool submitted() const { return m_submitted; }
        inline void setSubmitted()
        {
            m_submitted = true;
            setGenerated(m_rec, false);
            if (m_op == Delete) {
                m_rec.clearValues();
            }
            else {
                m_op = Update;
                m_db_values = m_rec;
                setGenerated(m_db_values, true);
            }
        }
        inline bool insert() const { return m_insert; }
        inline void revert()
        {
            if (m_submitted)
                return;
            if (m_op == Delete)
                m_op = Update;
            m_rec = m_db_values;
            setGenerated(m_rec, false);
            m_submitted = true;
        }
        inline QSqlRecord primaryValues(const QSqlRecord& pi) const
        {
            if (m_op == None || m_op == Insert)
                return QSqlRecord();

            QSqlRecord values(pi);

            for (int i = values.count() - 1; i >= 0; --i)
                values.setValue(i, m_db_values.value(values.fieldName(i)));

            return values;
        }
    private:
        inline static void setGenerated(QSqlRecord& r, bool g)
        {
            for (int i = r.count() - 1; i >= 0; --i)
                r.setGenerated(i, g);
        }
        Op m_op;
        QSqlRecord m_rec;
        QSqlRecord m_db_values;
        bool m_submitted;
        bool m_insert;
    };

    typedef QMap<int, ModifiedRow> CacheMap;
    CacheMap cache;
};

QT_END_NAMESPACE

#endif // QSQLTABLEMODEL_P_H