?? qsqlrelationaltablemodel.h
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/******************************************************************************** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.**** This file is part of the QtSql module of the Qt Toolkit.**** This file may be used under the terms of the GNU General Public** License version 2.0 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 GNU** General Public Licensing requirements will be met:** http://www.trolltech.com/products/qt/opensource.html**** If you are unsure which license is appropriate for your use, please** review the following information:** http://www.trolltech.com/products/qt/licensing.html or contact the** sales department at sales@trolltech.com.**** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#ifndef QSQLRELATIONALTABLEMODEL_H#define QSQLRELATIONALTABLEMODEL_H#include <QtSql/qsqltablemodel.h>QT_BEGIN_HEADERQT_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_OBJECTpublic: 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_HEADER#endif // QSQLRELATIONALTABLEMODEL_H
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