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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtSql module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, 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 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSQLNULLDRIVER_P_H
#define QSQLNULLDRIVER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. This header file may
// change from version to version without notice, or even be
// removed.
//
// We mean it.
//
#include "QtCore/qvariant.h"
#include "QtSql/qsqldriver.h"
#include "QtSql/qsqlerror.h"
#include "QtSql/qsqlresult.h"
QT_BEGIN_NAMESPACE
class QSqlNullResult : public QSqlResult
{
public:
inline explicit QSqlNullResult(const QSqlDriver* d): QSqlResult(d)
{ QSqlResult::setLastError(
QSqlError(QLatin1String("Driver not loaded"), QLatin1String("Driver not loaded"), QSqlError::ConnectionError)); }
protected:
inline QVariant data(int) { return QVariant(); }
inline bool reset (const QString&) { return false; }
inline bool fetch(int) { return false; }
inline bool fetchFirst() { return false; }
inline bool fetchLast() { return false; }
inline bool isNull(int) { return false; }
inline int size() { return -1; }
inline int numRowsAffected() { return 0; }
inline void setAt(int) {}
inline void setActive(bool) {}
inline void setLastError(const QSqlError&) {}
inline void setQuery(const QString&) {}
inline void setSelect(bool) {}
inline void setForwardOnly(bool) {}
inline bool exec() { return false; }
inline bool prepare(const QString&) { return false; }
inline bool savePrepare(const QString&) { return false; }
inline void bindValue(int, const QVariant&, QSql::ParamType) {}
inline void bindValue(const QString&, const QVariant&, QSql::ParamType) {}
};
class QSqlNullDriver : public QSqlDriver
{
public:
inline QSqlNullDriver(): QSqlDriver()
{ QSqlDriver::setLastError(
QSqlError(QLatin1String("Driver not loaded"), QLatin1String("Driver not loaded"), QSqlError::ConnectionError)); }
inline bool hasFeature(DriverFeature) const { return false; }
inline bool open(const QString &, const QString & , const QString & ,
const QString &, int, const QString&)
{ return false; }
inline void close() {}
inline QSqlResult *createResult() const { return new QSqlNullResult(this); }
protected:
inline void setOpen(bool) {}
inline void setOpenError(bool) {}
inline void setLastError(const QSqlError&) {}
};
QT_END_NAMESPACE
#endif // QSQLNULLDRIVER_P_H
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