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# Code for Cached Table Example

    /****************************************************************************
    **
    ** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
    **
    ** This file is part of Qt Jambi.
    **
    ** ** This file may be used under the terms of the GNU General Public
    ** License version 2.0 as published by the Free Software Foundation
    ** and appearing in the file LICENSE.GPL included in the packaging of
    ** this file.  Please review the following information to ensure GNU
    ** General Public Licensing requirements will be met:
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    ** review the following information:
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    **
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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");
        }
    }