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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.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSQLCACHEDRESULT_P_H
#define QSQLCACHEDRESULT_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtSql/private/qtsqlglobal_p.h>
#include "QtSql/qsqlresult.h"
#include "QtSql/private/qsqlresult_p.h"
#include <QtCore/qcontainerfwd.h>
QT_BEGIN_NAMESPACE
class QVariant;
class QSqlCachedResultPrivate;
class Q_SQL_EXPORT QSqlCachedResult: public QSqlResult
{
Q_DECLARE_PRIVATE(QSqlCachedResult)
public:
typedef QVector<QVariant> ValueCache;
protected:
QSqlCachedResult(QSqlCachedResultPrivate &d);
void init(int colCount);
void cleanup();
void clearValues();
virtual bool gotoNext(ValueCache &values, int index) = 0;
QVariant data(int i) override;
bool isNull(int i) override;
bool fetch(int i) override;
bool fetchNext() override;
bool fetchPrevious() override;
bool fetchFirst() override;
bool fetchLast() override;
int colCount() const;
ValueCache &cache();
void virtual_hook(int id, void *data) override;
void detachFromResultSet() override;
void setNumericalPrecisionPolicy(QSql::NumericalPrecisionPolicy policy) override;
private:
bool cacheNext();
};
class Q_SQL_EXPORT QSqlCachedResultPrivate: public QSqlResultPrivate
{
Q_DECLARE_PUBLIC(QSqlCachedResult)
public:
using QSqlResultPrivate::QSqlResultPrivate;
bool canSeek(int i) const;
inline int cacheCount() const;
void init(int count, bool fo);
void cleanup();
int nextIndex();
void revertLast();
QSqlCachedResult::ValueCache cache;
int rowCacheEnd = 0;
int colCount = 0;
bool atEnd = false;
};
QT_END_NAMESPACE
#endif // QSQLCACHEDRESULT_P_H
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