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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtSql module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSQLRELATIONALTABLEMODEL_H
#define QSQLRELATIONALTABLEMODEL_H
#include <QtSql/qtsqlglobal.h>
#include <QtSql/qsqltablemodel.h>
#include <QtCore/qtypeinfo.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) {}
void swap(QSqlRelation &other) Q_DECL_NOTHROW
{
qSwap(tName, other.tName);
qSwap(iColumn, other.iColumn);
qSwap(dColumn, other.dColumn);
}
inline QString tableName() const
{ return tName; }
inline QString indexColumn() const
{ return iColumn; }
inline QString displayColumn() const
{ return dColumn; }
bool isValid() const Q_DECL_NOTHROW
{ return !(tName.isEmpty() || iColumn.isEmpty() || dColumn.isEmpty()); }
private:
QString tName, iColumn, dColumn;
};
Q_DECLARE_SHARED_NOT_MOVABLE_UNTIL_QT6(QSqlRelation)
class QSqlRelationalTableModelPrivate;
class Q_SQL_EXPORT QSqlRelationalTableModel: public QSqlTableModel
{
Q_OBJECT
public:
enum JoinMode {
InnerJoin,
LeftJoin
};
explicit QSqlRelationalTableModel(QObject *parent = nullptr,
QSqlDatabase db = QSqlDatabase());
virtual ~QSqlRelationalTableModel();
QVariant data(const QModelIndex &item, int role = Qt::DisplayRole) const override;
bool setData(const QModelIndex &item, const QVariant &value, int role = Qt::EditRole) override;
bool removeColumns(int column, int count, const QModelIndex &parent = QModelIndex()) override;
void clear() override;
bool select() override;
void setTable(const QString &tableName) override;
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) override;
protected:
QString selectStatement() const override;
bool updateRowInTable(int row, const QSqlRecord &values) override;
bool insertRowIntoTable(const QSqlRecord &values) override;
QString orderByClause() const override;
private:
Q_DECLARE_PRIVATE(QSqlRelationalTableModel)
};
QT_END_NAMESPACE
#endif // QSQLRELATIONALTABLEMODEL_H
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