115 lines
4.0 KiB
C++
115 lines
4.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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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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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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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 General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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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 "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) { return QVariant(); }
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inline bool reset (const QString&) { return false; }
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inline bool fetch(int) { return false; }
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inline bool fetchFirst() { return false; }
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inline bool fetchLast() { return false; }
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inline bool isNull(int) { return false; }
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inline int size() { return -1; }
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inline int numRowsAffected() { return 0; }
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inline void setAt(int) {}
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inline void setActive(bool) {}
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inline void setLastError(const QSqlError&) {}
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inline void setQuery(const QString&) {}
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inline void setSelect(bool) {}
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inline void setForwardOnly(bool) {}
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inline bool exec() { return false; }
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inline bool prepare(const QString&) { return false; }
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inline bool savePrepare(const QString&) { return false; }
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inline void bindValue(int, const QVariant&, QSql::ParamType) {}
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inline void bindValue(const QString&, const QVariant&, QSql::ParamType) {}
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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 { return false; }
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inline bool open(const QString &, const QString & , const QString & ,
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const QString &, int, const QString&)
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{ return false; }
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inline void close() {}
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inline QSqlResult *createResult() const { return new QSqlNullResult(this); }
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protected:
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inline void setOpen(bool) {}
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inline void setOpenError(bool) {}
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inline void setLastError(const QSqlError&) {}
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};
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QT_END_NAMESPACE
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#endif // QSQLNULLDRIVER_P_H
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