/****************************************************************************
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** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtSql module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
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****************************************************************************/

#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) Q_DECL_OVERRIDE { return QVariant(); }
    inline bool reset (const QString&) Q_DECL_OVERRIDE { return false; }
    inline bool fetch(int) Q_DECL_OVERRIDE { return false; }
    inline bool fetchFirst() Q_DECL_OVERRIDE { return false; }
    inline bool fetchLast() Q_DECL_OVERRIDE { return false; }
    inline bool isNull(int) Q_DECL_OVERRIDE { return false; }
    inline int size() Q_DECL_OVERRIDE { return -1; }
    inline int numRowsAffected() Q_DECL_OVERRIDE { return 0; }

    inline void setAt(int) Q_DECL_OVERRIDE {}
    inline void setActive(bool) Q_DECL_OVERRIDE {}
    inline void setLastError(const QSqlError&) Q_DECL_OVERRIDE {}
    inline void setQuery(const QString&) Q_DECL_OVERRIDE {}
    inline void setSelect(bool) Q_DECL_OVERRIDE {}
    inline void setForwardOnly(bool) Q_DECL_OVERRIDE {}

    inline bool exec() Q_DECL_OVERRIDE { return false; }
    inline bool prepare(const QString&) Q_DECL_OVERRIDE { return false; }
    inline bool savePrepare(const QString&) Q_DECL_OVERRIDE { return false; }
    inline void bindValue(int, const QVariant&, QSql::ParamType) Q_DECL_OVERRIDE {}
    inline void bindValue(const QString&, const QVariant&, QSql::ParamType) Q_DECL_OVERRIDE {}
};

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 Q_DECL_OVERRIDE { return false; }
    inline bool open(const QString &, const QString &, const QString &, const QString &, int, const QString&) Q_DECL_OVERRIDE
    { return false; }
    inline void close() Q_DECL_OVERRIDE {}
    inline QSqlResult *createResult() const Q_DECL_OVERRIDE { return new QSqlNullResult(this); }

protected:
    inline void setOpen(bool) Q_DECL_OVERRIDE {}
    inline void setOpenError(bool) Q_DECL_OVERRIDE {}
    inline void setLastError(const QSqlError&) Q_DECL_OVERRIDE {}
};

QT_END_NAMESPACE

#endif // QSQLNULLDRIVER_P_H
