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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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSQLRELATIONALTABLEMODEL_H
#define QSQLRELATIONALTABLEMODEL_H
#include <QtSql/qsqltablemodel.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Sql)
class Q_SQL_EXPORT QSqlRelation
{
public:
QSqlRelation() {}
QSqlRelation(const QString &aTableName, const QString &indexCol,
const QString &displayCol)
: tName(aTableName), iColumn(indexCol), dColumn(displayCol) {}
inline QString tableName() const
{ return tName; }
inline QString indexColumn() const
{ return iColumn; }
inline QString displayColumn() const
{ return dColumn; }
inline bool isValid() const
{ return !(tName.isEmpty() || iColumn.isEmpty() || dColumn.isEmpty()); }
private:
QString tName, iColumn, dColumn;
};
class QSqlRelationalTableModelPrivate;
class Q_SQL_EXPORT QSqlRelationalTableModel: public QSqlTableModel
{
Q_OBJECT
public:
explicit QSqlRelationalTableModel(QObject *parent = 0,
QSqlDatabase db = QSqlDatabase());
virtual ~QSqlRelationalTableModel();
QVariant data(const QModelIndex &item, int role = Qt::DisplayRole) const;
bool setData(const QModelIndex &item, const QVariant &value, int role = Qt::EditRole);
bool removeColumns(int column, int count, const QModelIndex &parent = QModelIndex());
void clear();
bool select();
void setTable(const QString &tableName);
virtual void setRelation(int column, const QSqlRelation &relation);
QSqlRelation relation(int column) const;
virtual QSqlTableModel *relationModel(int column) const;
public Q_SLOTS:
void revertRow(int row);
protected:
QString selectStatement() const;
bool updateRowInTable(int row, const QSqlRecord &values);
bool insertRowIntoTable(const QSqlRecord &values);
QString orderByClause() const;
private:
Q_DECLARE_PRIVATE(QSqlRelationalTableModel)
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QSQLRELATIONALTABLEMODEL_H
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