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92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Copyright (C) 2016-2019 Ivailo Monev
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**
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** This file is part of the QtSql module of the Katie 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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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company 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
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.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 QSQLCACHEDRESULT_P_H
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#define QSQLCACHEDRESULT_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 Katie API. It exists for the convenience
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// of other Qt classes. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include "QtSql/qsqlresult.h"
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QT_BEGIN_NAMESPACE
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class QVariant;
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template <typename T> class QVector;
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class QSqlCachedResultPrivate;
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class Q_SQL_EXPORT QSqlCachedResult: public QSqlResult
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{
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public:
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virtual ~QSqlCachedResult();
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typedef QVector<QVariant> ValueCache;
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protected:
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QSqlCachedResult(const QSqlDriver * db);
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void init(int colCount);
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void cleanup();
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void clearValues();
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virtual bool gotoNext(ValueCache &values, int index) = 0;
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QVariant data(int i) const;
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bool isNull(int i) const;
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bool fetch(int i);
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bool fetchNext();
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bool fetchPrevious();
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bool fetchFirst();
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bool fetchLast();
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int colCount() const;
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ValueCache &cache();
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void virtual_hook(int id, void *data);
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private:
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bool cacheNext();
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QSqlCachedResultPrivate *d;
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};
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QT_END_NAMESPACE
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#endif // QSQLCACHEDRESULT_P_H
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