113 lines
4.4 KiB
C++
113 lines
4.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtSql module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QSQLNULLDRIVER_P_H
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#define QSQLNULLDRIVER_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. This header file may
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// change from version to version without notice, or even be
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// removed.
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//
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// We mean it.
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//
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#include <QtSql/private/qtsqlglobal_p.h>
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#include "QtCore/qvariant.h"
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#include "QtSql/qsqldriver.h"
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#include "QtSql/qsqlerror.h"
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#include "QtSql/qsqlresult.h"
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QT_BEGIN_NAMESPACE
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class QSqlNullResult : public QSqlResult
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{
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public:
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inline explicit QSqlNullResult(const QSqlDriver* d): QSqlResult(d)
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{ QSqlResult::setLastError(
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QSqlError(QLatin1String("Driver not loaded"), QLatin1String("Driver not loaded"), QSqlError::ConnectionError)); }
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protected:
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inline QVariant data(int) override { return QVariant(); }
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inline bool reset (const QString&) override { return false; }
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inline bool fetch(int) override { return false; }
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inline bool fetchFirst() override { return false; }
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inline bool fetchLast() override { return false; }
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inline bool isNull(int) override { return false; }
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inline int size() override { return -1; }
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inline int numRowsAffected() override { return 0; }
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inline void setAt(int) override {}
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inline void setActive(bool) override {}
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inline void setLastError(const QSqlError&) override {}
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inline void setQuery(const QString&) override {}
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inline void setSelect(bool) override {}
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inline void setForwardOnly(bool) override {}
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inline bool exec() override { return false; }
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inline bool prepare(const QString&) override { return false; }
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inline bool savePrepare(const QString&) override { return false; }
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inline void bindValue(int, const QVariant&, QSql::ParamType) override {}
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inline void bindValue(const QString&, const QVariant&, QSql::ParamType) override {}
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};
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class QSqlNullDriver : public QSqlDriver
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{
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public:
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inline QSqlNullDriver(): QSqlDriver()
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{ QSqlDriver::setLastError(
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QSqlError(QLatin1String("Driver not loaded"), QLatin1String("Driver not loaded"), QSqlError::ConnectionError)); }
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inline bool hasFeature(DriverFeature) const override { return false; }
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inline bool open(const QString &, const QString &, const QString &, const QString &, int, const QString&) override
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{ return false; }
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inline void close() override {}
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inline QSqlResult *createResult() const override { return new QSqlNullResult(this); }
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protected:
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inline void setOpen(bool) override {}
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inline void setOpenError(bool) override {}
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inline void setLastError(const QSqlError&) override {}
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};
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QT_END_NAMESPACE
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#endif // QSQLNULLDRIVER_P_H
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