9e933de7f2
The example creates a view on the heap but doesn't delete it on application end. This patch uses a QScopedPointer to fix that. Change-Id: I3b0c8589999d243c193bd02e1470c03eabfabe40 Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
125 lines
4.5 KiB
C++
125 lines
4.5 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 examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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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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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include <QtSql>
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#include "../connection.h"
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void initializeModel(QSqlRelationalTableModel *model)
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{
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//! [0]
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model->setTable("employee");
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//! [0]
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model->setEditStrategy(QSqlTableModel::OnManualSubmit);
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//! [1]
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model->setRelation(2, QSqlRelation("city", "id", "name"));
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//! [1] //! [2]
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model->setRelation(3, QSqlRelation("country", "id", "name"));
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//! [2]
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//! [3]
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model->setHeaderData(0, Qt::Horizontal, QObject::tr("ID"));
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model->setHeaderData(1, Qt::Horizontal, QObject::tr("Name"));
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model->setHeaderData(2, Qt::Horizontal, QObject::tr("City"));
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model->setHeaderData(3, Qt::Horizontal, QObject::tr("Country"));
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//! [3]
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model->select();
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}
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QTableView *createView(const QString &title, QSqlTableModel *model)
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{
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//! [4]
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QTableView *view = new QTableView;
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view->setModel(model);
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view->setItemDelegate(new QSqlRelationalDelegate(view));
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//! [4]
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view->setWindowTitle(title);
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return view;
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}
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void createRelationalTables()
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{
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QSqlQuery query;
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query.exec("create table employee(id int primary key, name varchar(20), city int, country int)");
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query.exec("insert into employee values(1, 'Espen', 5000, 47)");
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query.exec("insert into employee values(2, 'Harald', 80000, 49)");
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query.exec("insert into employee values(3, 'Sam', 100, 1)");
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query.exec("create table city(id int, name varchar(20))");
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query.exec("insert into city values(100, 'San Jose')");
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query.exec("insert into city values(5000, 'Oslo')");
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query.exec("insert into city values(80000, 'Munich')");
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query.exec("create table country(id int, name varchar(20))");
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query.exec("insert into country values(1, 'USA')");
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query.exec("insert into country values(47, 'Norway')");
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query.exec("insert into country values(49, 'Germany')");
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}
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int main(int argc, char *argv[])
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{
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QApplication app(argc, argv);
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if (!createConnection())
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return 1;
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createRelationalTables();
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QSqlRelationalTableModel model;
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initializeModel(&model);
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QScopedPointer<QTableView> view(createView(QObject::tr("Relational Table Model"), &model));
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view->show();
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return app.exec();
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}
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