Mega Code Archive
Load data to QTableView
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Foundations of Qt Development\Chapter13\modelview\main.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QApplication>
#include <QTableView>
#include <QtSql>
void relModel()
{
QSqlRelationalTableModel *model = new QSqlRelationalTableModel();
model->setTable( "names" );
model->setRelation( 0, QSqlRelation( "salaries", "id", "annual" ) );
model->select();
model->setHeaderData( 0, Qt::Horizontal, QObject::tr("Annual Pay") );
model->setHeaderData( 1, Qt::Horizontal, QObject::tr("First Name") );
model->setHeaderData( 2, Qt::Horizontal, QObject::tr("Last Name") );
QTableView *view = new QTableView();
view->setModel( model );
view->show();
}
void tabModel()
{
QSqlTableModel *model = new QSqlTableModel();
model->setTable( "names" );
model->setFilter( "lastname = 'Doe'" );
model->select();
model->removeColumn( 0 );
QTableView *view = new QTableView();
view->setModel( model );
view->show();
}
void qryModel()
{
QSqlQueryModel *model = new QSqlQueryModel();
model->setQuery( "SELECT firstname, lastname FROM names" );
QTableView *view = new QTableView();
view->setModel( model );
view->show();
}
int main( int argc, char **argv )
{
QApplication app( argc, argv );
QSqlDatabase db = QSqlDatabase::addDatabase( "QSQLITE" );
db.setDatabaseName( ":memory:" );
if( !db.open() )
{
qDebug() << db.lastError();
qFatal( "Failed to connect." );
}
qDebug( "Connected!" );
QSqlQuery qry;
qry.prepare( "CREATE TABLE IF NOT EXISTS names (id INTEGER UNIQUE PRIMARY KEY, firstname VARCHAR(30), lastname VARCHAR(30))" );
qry.exec();
qry.prepare( "INSERT INTO names (id, firstname, lastname) VALUES (1, 'John', 'Doe')" );
qry.exec();
qry.prepare( "INSERT INTO names (id, firstname, lastname) VALUES (2, 'Jane', 'Doe')" );
qry.exec();
qry.prepare( "INSERT INTO names (id, firstname, lastname) VALUES (3, 'James', 'Doe')" );
qry.exec();
qry.prepare( "INSERT INTO names (id, firstname, lastname) VALUES (4, 'Judy', 'Doe')" );
qry.exec();
qry.prepare( "INSERT INTO names (id, firstname, lastname) VALUES (5, 'Richard', 'Roe')" );
qry.exec();
qry.prepare( "INSERT INTO names (id, firstname, lastname) VALUES (6, 'Jane', 'Roe')" );
qry.exec();
qry.prepare( "INSERT INTO names (id, firstname, lastname) VALUES (7, 'John', 'Noakes')" );
qry.exec();
qry.prepare( "INSERT INTO names (id, firstname, lastname) VALUES (8, 'Donna', 'Doe')" );
qry.exec();
qry.prepare( "INSERT INTO names (id, firstname, lastname) VALUES (:id, :firstname, :lastname)" );
qry.bindValue( ":id", 9 );
qry.bindValue( ":firstname", "Ralph" );
qry.bindValue( ":lastname", "Roe" );
qry.exec();
qry.prepare( "CREATE TABLE IF NOT EXISTS salaries (id INTEGER UNIQUE PRIMARY KEY, annual INTEGER)" );
qry.exec();
qry.prepare( "INSERT INTO salaries (id, annual) VALUES (1, 1000)" );
qry.exec();
qry.prepare( "INSERT INTO salaries (id, annual) VALUES (2, 900)" );
qry.exec();
qry.prepare( "INSERT INTO salaries (id, annual) VALUES (3, 900)" );
qry.exec();
qry.prepare( "INSERT INTO salaries (id, annual) VALUES (5, 1100)" );
qry.exec();
qry.prepare( "INSERT INTO salaries (id, annual) VALUES (6, 1000)" );
qry.exec();
qry.prepare( "INSERT INTO salaries (id, annual) VALUES (8, 1200)" );
qry.exec();
qry.prepare( "INSERT INTO salaries (id, annual) VALUES (9, 1200)" );
qry.exec();
relModel();
tabModel();
qryModel();
return app.exec();
}
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