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