1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QSQLNULLDRIVER_P_H
5#define QSQLNULLDRIVER_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. This header file may
12// change from version to version without notice, or even be
13// removed.
14//
15// We mean it.
16//
17
18#include <QtSql/private/qtsqlglobal_p.h>
19#include "QtCore/qvariant.h"
20#include "QtSql/qsqldriver.h"
21#include "QtSql/qsqlerror.h"
22#include "QtSql/qsqlresult.h"
23
24QT_BEGIN_NAMESPACE
25
26class QSqlNullResult : public QSqlResult
27{
28public:
29 inline explicit QSqlNullResult(const QSqlDriver* d): QSqlResult(d)
30 { QSqlResult::setLastError(
31 QSqlError(QLatin1StringView("Driver not loaded"), QLatin1StringView("Driver not loaded"), QSqlError::ConnectionError)); }
32protected:
33 inline QVariant data(int) override { return QVariant(); }
34 inline bool reset (const QString&) override { return false; }
35 inline bool fetch(int) override { return false; }
36 inline bool fetchFirst() override { return false; }
37 inline bool fetchLast() override { return false; }
38 inline bool isNull(int) override { return false; }
39 inline int size() override { return -1; }
40 inline int numRowsAffected() override { return 0; }
41
42 inline void setAt(int) override {}
43 inline void setActive(bool) override {}
44 inline void setLastError(const QSqlError&) override {}
45 inline void setQuery(const QString&) override {}
46 inline void setSelect(bool) override {}
47 inline void setForwardOnly(bool) override {}
48
49 inline bool exec() override { return false; }
50 inline bool prepare(const QString&) override { return false; }
51 inline bool savePrepare(const QString&) override { return false; }
52 inline void bindValue(int, const QVariant&, QSql::ParamType) override {}
53 inline void bindValue(const QString&, const QVariant&, QSql::ParamType) override {}
54};
55
56class QSqlNullDriver : public QSqlDriver
57{
58public:
59 inline QSqlNullDriver(): QSqlDriver()
60 { QSqlDriver::setLastError(
61 QSqlError(QLatin1StringView("Driver not loaded"), QLatin1StringView("Driver not loaded"), QSqlError::ConnectionError)); }
62 inline bool hasFeature(DriverFeature) const override { return false; }
63 inline bool open(const QString &, const QString &, const QString &, const QString &, int, const QString&) override
64 { return false; }
65 inline void close() override {}
66 inline QSqlResult *createResult() const override { return new QSqlNullResult(this); }
67
68protected:
69 inline void setOpen(bool) override {}
70 inline void setOpenError(bool) override {}
71 inline void setLastError(const QSqlError&) override {}
72};
73
74QT_END_NAMESPACE
75
76#endif // QSQLNULLDRIVER_P_H
77

source code of qtbase/src/sql/kernel/qsqlnulldriver_p.h