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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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#ifndef QSQLRELATIONALTABLEMODEL_H
#define QSQLRELATIONALTABLEMODEL_H
#include <QtSql/qsqltablemodel.h>
QT_BEGIN_NAMESPACE
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:
enum JoinMode {
InnerJoin,
LeftJoin
};
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;
void setJoinMode( QSqlRelationalTableModel::JoinMode joinMode );
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
#endif // QSQLRELATIONALTABLEMODEL_H
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