1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtSql module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QSQLNULLDRIVER_P_H 41 #define QSQLNULLDRIVER_P_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is not part of the Qt API. This header file may 48 // change from version to version without notice, or even be 49 // removed. 50 // 51 // We mean it. 52 // 53 54 #include <QtSql/private/qtsqlglobal_p.h> 55 #include "QtCore/qvariant.h" 56 #include "QtSql/qsqldriver.h" 57 #include "QtSql/qsqlerror.h" 58 #include "QtSql/qsqlresult.h" 59 60 QT_BEGIN_NAMESPACE 61 62 class QSqlNullResult : public QSqlResult 63 { 64 public: QSqlNullResult(const QSqlDriver * d)65 inline explicit QSqlNullResult(const QSqlDriver* d): QSqlResult(d) 66 { QSqlResult::setLastError( 67 QSqlError(QLatin1String("Driver not loaded"), QLatin1String("Driver not loaded"), QSqlError::ConnectionError)); } 68 protected: data(int)69 inline QVariant data(int) override { return QVariant(); } reset(const QString &)70 inline bool reset (const QString&) override { return false; } fetch(int)71 inline bool fetch(int) override { return false; } fetchFirst()72 inline bool fetchFirst() override { return false; } fetchLast()73 inline bool fetchLast() override { return false; } isNull(int)74 inline bool isNull(int) override { return false; } size()75 inline int size() override { return -1; } numRowsAffected()76 inline int numRowsAffected() override { return 0; } 77 setAt(int)78 inline void setAt(int) override {} setActive(bool)79 inline void setActive(bool) override {} setLastError(const QSqlError &)80 inline void setLastError(const QSqlError&) override {} setQuery(const QString &)81 inline void setQuery(const QString&) override {} setSelect(bool)82 inline void setSelect(bool) override {} setForwardOnly(bool)83 inline void setForwardOnly(bool) override {} 84 exec()85 inline bool exec() override { return false; } prepare(const QString &)86 inline bool prepare(const QString&) override { return false; } savePrepare(const QString &)87 inline bool savePrepare(const QString&) override { return false; } bindValue(int,const QVariant &,QSql::ParamType)88 inline void bindValue(int, const QVariant&, QSql::ParamType) override {} bindValue(const QString &,const QVariant &,QSql::ParamType)89 inline void bindValue(const QString&, const QVariant&, QSql::ParamType) override {} 90 }; 91 92 class QSqlNullDriver : public QSqlDriver 93 { 94 public: QSqlNullDriver()95 inline QSqlNullDriver(): QSqlDriver() 96 { QSqlDriver::setLastError( 97 QSqlError(QLatin1String("Driver not loaded"), QLatin1String("Driver not loaded"), QSqlError::ConnectionError)); } hasFeature(DriverFeature)98 inline bool hasFeature(DriverFeature) const override { return false; } open(const QString &,const QString &,const QString &,const QString &,int,const QString &)99 inline bool open(const QString &, const QString &, const QString &, const QString &, int, const QString&) override 100 { return false; } close()101 inline void close() override {} createResult()102 inline QSqlResult *createResult() const override { return new QSqlNullResult(this); } 103 104 protected: setOpen(bool)105 inline void setOpen(bool) override {} setOpenError(bool)106 inline void setOpenError(bool) override {} setLastError(const QSqlError &)107 inline void setLastError(const QSqlError&) override {} 108 }; 109 110 QT_END_NAMESPACE 111 112 #endif // QSQLNULLDRIVER_P_H 113