Code for Cached Table Example
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package com.trolltech.examples;
import com.trolltech.qt.core.Qt;
import com.trolltech.qt.gui.*;
import com.trolltech.qt.sql.QSqlDatabase;
import com.trolltech.qt.sql.QSqlTableModel;
@QtJambiExample(name = "Cached Table",
canInstantiate = "call-static-method:checkSqlLite")
public class CachedTable extends QDialog {
private QPushButton submitButton = null;
private QPushButton revertButton = null;
private QPushButton quitButton = null;
private QSqlTableModel model = null;
public static void main(String[] args) {
QApplication.initialize(args);
if (!checkSqlLite()) {
System.out.println("Missing support for SQL");
return;
}
CachedTable table = new CachedTable(null);
table.show();
table.exec();
}
public CachedTable(QWidget parent)
{
super(parent);
if (!SqlCommon.createConnection())
throw new RuntimeException("Couldn't connect to SQLITE server");
String tableName = "person";
model = new QSqlTableModel(this);
model.setTable(tableName);
model.setEditStrategy(QSqlTableModel.EditStrategy.OnManualSubmit);
model.select();
model.setHeaderData(0, Qt.Orientation.Horizontal, tr("ID"));
model.setHeaderData(1, Qt.Orientation.Horizontal, tr("First name"));
model.setHeaderData(2, Qt.Orientation.Horizontal, tr("Last name"));
QTableView view = new QTableView();
view.setModel(model);
setWindowIcon(new QIcon("classpath:com/trolltech/images/qt-logo.png"));
submitButton = new QPushButton(tr("Submit"));
submitButton.setDefault(true);
revertButton = new QPushButton(tr("&Revert"));
quitButton = new QPushButton(tr("Quit"));
submitButton.clicked.connect(this, "submit()");
revertButton.clicked.connect(model, "revertAll()");
quitButton.clicked.connect(this, "close()");
QVBoxLayout buttonLayout = new QVBoxLayout();
buttonLayout.addWidget(submitButton);
buttonLayout.addWidget(revertButton);
buttonLayout.addWidget(quitButton);
buttonLayout.addStretch(1);
QHBoxLayout mainLayout = new QHBoxLayout();
mainLayout.addWidget(view);
mainLayout.addLayout(buttonLayout);
setLayout(mainLayout);
setWindowTitle(tr("Cached Table"));
}
protected void submit()
{
model.database().transaction();
if (model.submitAll()) {
model.database().commit();
} else {
model.database().rollback();
QMessageBox.warning(this, tr("Cached Table"),
tr("The database reported an error: ") + model.lastError().text());
}
}
public static boolean checkSqlLite() {
return QSqlDatabase.isDriverAvailable("QSQLITE");
}
}
Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies) |
Trademarks |
Qt Jambi 4.5.2_01 |