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Diffstat (limited to 'src/sql/kernel/qsqlcachedresult_p.h')
-rw-r--r-- | src/sql/kernel/qsqlcachedresult_p.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/src/sql/kernel/qsqlcachedresult_p.h b/src/sql/kernel/qsqlcachedresult_p.h new file mode 100644 index 0000000..8a4869c --- /dev/null +++ b/src/sql/kernel/qsqlcachedresult_p.h @@ -0,0 +1,99 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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/qsqlresult.h" + +QT_BEGIN_NAMESPACE + +class QVariant; +template <typename T> class QVector; + +class QSqlCachedResultPrivate; + +class Q_SQL_EXPORT QSqlCachedResult: public QSqlResult +{ +public: + virtual ~QSqlCachedResult(); + + typedef QVector<QVariant> ValueCache; + +protected: + QSqlCachedResult(const QSqlDriver * db); + + void init(int colCount); + void cleanup(); + void clearValues(); + + virtual bool gotoNext(ValueCache &values, int index) = 0; + + QVariant data(int i); + bool isNull(int i); + bool fetch(int i); + bool fetchNext(); + bool fetchPrevious(); + bool fetchFirst(); + bool fetchLast(); + + int colCount() const; + ValueCache &cache(); + +private: + bool cacheNext(); + QSqlCachedResultPrivate *d; +}; + +QT_END_NAMESPACE + +#endif // QSQLCACHEDRESULT_P_H |