HSQLDB example source code file (ZaurusDatabaseManager.java)

This example HSQLDB source code file (ZaurusDatabaseManager.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - HSQLDB tags/keywords

awt, button, center, event, filedialog, image, io, jdbc, panel, panel, result, script, script, sql, sqlexception, string, string, tree, view, view

The HSQLDB ZaurusDatabaseManager.java source code

/* Copyright (c) 2001-2008, The HSQL Development Group
 * 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 the HSQL Development Group 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 HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * 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.
 */


package org.hsqldb.util;

import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.CardLayout;
import java.awt.Dimension;
import java.awt.FileDialog;
import java.awt.Font;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowListener;
import java.awt.image.MemoryImageSource;

import org.hsqldb.lib.java.JavaSystem;

/**
 * Class declaration
 *
 *
 * @version 1.0.0.1
 * @author ulrivo@users
 *
 */
public class ZaurusDatabaseManager extends DatabaseManager
implements ActionListener, WindowListener, KeyListener {

    // (ulrivo): new buttons to switch the cards
    Button butTree;
    Button butCommand;
    Button butResult;
    Button butEditor;

    // (ulrivo): Panel pCard with CardLayout inside Frame fMain
    Panel      pCard;
    CardLayout layoutCard;

    // the editor/input form
    ZaurusEditor eEditor;

    // (ulrivo): variables set by arguments from the commandline
    static String defDriver;
    static String defURL;
    static String defUser;
    static String defPassword;
    static String defQuery;
    static String defDirectory;
    static String defDatabase;
    static int    defWidth  = 237;
    static int    defHeight = 259;
    static int    defLocX   = 0;
    static int    defLocY   = 0;

    /**
     * Method declaration
     *
     *
     * @param c
     */
    public void connect(Connection c) {

        if (c == null) {
            return;
        }

        if (cConn != null) {
            try {
                cConn.close();
            } catch (SQLException e) {}
        }

        cConn = c;

        try {
            dMeta      = cConn.getMetaData();
            sStatement = cConn.createStatement();
        } catch (SQLException e) {
            e.printStackTrace();
        }

        refreshTree();
    }

    /**
     * Method declaration
     *
     *
     * @param arg
     */
    public static void main(String[] arg) {

        bMustExit = true;

        // (ulrivo): read all arguments from the command line
        int i = 0;

        while (i < arg.length) {
            if (arg[i].equalsIgnoreCase("-driver") && (i + 1 < arg.length)) {
                i++;

                defDriver = arg[i];
            } else if (arg[i].equalsIgnoreCase("-url")
                       && (i + 1 < arg.length)) {
                i++;

                defURL = arg[i];
            } else if (arg[i].equalsIgnoreCase("-width")
                       && (i + 1 < arg.length)) {
                i++;

                try {
                    defWidth = Integer.parseInt(arg[i]);
                } catch (Exception e) {}
            } else if (arg[i].equalsIgnoreCase("-height")
                       && (i + 1 < arg.length)) {
                i++;

                try {
                    defHeight = Integer.parseInt(arg[i]);
                } catch (Exception e) {}
            } else if (arg[i].equalsIgnoreCase("-locx")
                       && (i + 1 < arg.length)) {
                i++;

                try {
                    defLocX = Integer.parseInt(arg[i]);
                } catch (Exception e) {}
            } else if (arg[i].equalsIgnoreCase("-locy")
                       && (i + 1 < arg.length)) {
                i++;

                try {
                    defLocY = Integer.parseInt(arg[i]);
                } catch (Exception e) {}
            } else if (arg[i].equalsIgnoreCase("-user")
                       && (i + 1 < arg.length)) {
                i++;

                defUser = arg[i];
            } else if (arg[i].equalsIgnoreCase("-password")
                       && (i + 1 < arg.length)) {
                i++;

                defPassword = arg[i];
            } else if (arg[i].equalsIgnoreCase("-query")
                       && (i + 1 < arg.length)) {
                i++;

                defQuery = arg[i];
            } else if (arg[i].equalsIgnoreCase("-defDirectory")
                       && (i + 1 < arg.length)) {
                i++;

                defDirectory = arg[i];
            } else if (arg[i].equalsIgnoreCase("-database")
                       && (i + 1 < arg.length)) {
                i++;

                defDatabase = arg[i];
            } else {
                showUsage();

                return;
            }

            i++;
        }

        ZaurusDatabaseManager m = new ZaurusDatabaseManager();

        m.main();

        // (ulrivo): make default connection if arguments set via the command line
        Connection c = null;

        if ((defDriver != null && defURL != null) || (defDatabase != null)) {
            if (defDatabase != null) {
                defDriver   = "org.hsqldb.jdbcDriver";
                defURL      = "jdbc:hsqldb:" + defDatabase;
                defUser     = "SA";
                defPassword = "";
            }

            try {
                Class.forName(defDriver).newInstance();

                c = DriverManager.getConnection(defURL, defUser, defPassword);
            } catch (Exception e) {
                System.out.println("No connection for " + defDriver + " at "
                                   + defURL);
                e.printStackTrace();
            }
        } else {
            c = ZaurusConnectionDialog.createConnection(m.fMain, "Connect",
                    new Insets(defWidth, defHeight, defLocX, defLocY));
        }

        if (c == null) {
            return;
        }

        m.connect(c);
    }

    private static void showUsage() {

        System.out.println(
            "Usage: java org.hsqldb.util.ZaurusDatabaseManager [options]");
        System.out.println("where options could be:");
        System.out.println(
            "If the next two options are set, the specified connection will be used:");
        System.out.println("   -driver dr");
        System.out.println("   -url address");
        System.out.println("-user name");
        System.out.println("-password passw");
        System.out.println("Alternative the database argument is used,");
        System.out.println(
            "and the hsqldb Driver Standalone is chosen for user 'SA'.");
        System.out.println("-database db");
        System.out.println(
            "-query qu                   the query qu will be read during initialization");
        System.out.println(
            "-defaultDirectory defdir    default dir for the file open dialog");
        System.out.println(
            "If the next two options are set, the frame will be set to the specified values:");
        System.out.println("   -width width");
        System.out.println("   -height height");
        System.out.println("-locX positon left ");
        System.out.println("-locY positon top ");
        System.out.println("");
        System.out.println(
            "1. Example: java org.hsqldb.util.ZaurusDatabaseManager +");
        System.out.println("  -driver 'org.hsqldb.jdbcDriver' +");
        System.out.println("  -url 'jdbc:hsqldb:test'");
        System.out.println(
            "2. Example: java org.hsqldb.util.ZaurusDatabaseManager +");
        System.out.println("  -database 'test'");
    }

    /**
     * Method declaration
     *
     */
    public void main() {

        fMain = new Frame("HSQLDB Database Manager for Zaurus");
        imgEmpty = createImage(new MemoryImageSource(2, 2, new int[4 * 4], 2,
                2));

        fMain.setIconImage(imgEmpty);
        fMain.addWindowListener(this);

        MenuBar bar = new MenuBar();

        // no shortcuts used
        String[] fitems = {
            "-Connect...", "--", "-Open Script...", "-Save Script...",
            "-Save Result...", "--", "-Exit"
        };

        addMenu(bar, "File", fitems);

        String[] vitems = {
            "-Refresh Tree", "--", "-View Tree", "-View Command",
            "-View Result", "-View Editor", "--", "-Results in Grid",
            "-Results in Text"
        };

        addMenu(bar, "View", vitems);

        String[] sitems = {
            "-SELECT", "-INSERT", "-UPDATE", "-DELETE", "--", "-CREATE TABLE",
            "-DROP TABLE", "-CREATE INDEX", "-DROP INDEX", "--", "-SCRIPT",
            "-SHUTDOWN", "--", "-Test Script"
        };

        addMenu(bar, "SQL", sitems);

        Menu recent = new Menu("Recent");

        mRecent = new Menu("Recent");

        bar.add(mRecent);

        String[] soptions = {
            "-AutoCommit on", "-AutoCommit off", "-Commit", "-Rollback", "--",
            "-Disable MaxRows", "-Set MaxRows to 100", "--", "-Logging on",
            "-Logging off", "--",
            "-Insert test data"    // , "-Transfer"
        };

        addMenu(bar, "Options", soptions);

        String[] shelp = { "-Show HTML-Help in browser" };

        addMenu(bar, "?", shelp);
        fMain.setMenuBar(bar);
        fMain.setSize(defWidth, defHeight);
        fMain.add("Center", this);
        initGUI();

        sRecent = new String[iMaxRecent];

        Dimension d    = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension size = fMain.getSize();

        // (ulrivo): arguments from command line or
        // full size on screen with less than 640 width
        if (d.width > 640) {
            fMain.setLocation((d.width - size.width) / 2,
                              (d.height - size.height) / 2);
        } else if (defWidth > 0 && defHeight > 0) {
            fMain.setLocation(defLocX, defLocY);
            fMain.setSize(defWidth, defHeight);
        } else {
            fMain.setLocation(0, 0);
            fMain.setSize(d);
        }

        fMain.show();

        // (ulrivo): load query from command line
        if (defQuery != null) {
            txtCommand.setText(DatabaseManagerCommon.readFile(defQuery));
        }

        txtCommand.requestFocus();
    }

    /**
     * Method declaration
     *
     *
     * @param k
     */
    public void keyTyped(KeyEvent k) {

        // Strg+Enter or Shift+Enter executes the actual SQL statement in command panel
        if (k.getKeyChar() == '\n'
                && (k.isControlDown() || k.isShiftDown())) {
            k.consume();
            execute();
            layoutCard.show(pCard, "result");
        }
    }

    public void keyPressed(KeyEvent k) {

        //  System.out.println("Key pressed: " + k.getKeyCode());
    }

    /**
     * Method declaration
     *
     *
     * @param ev
     */
    public void actionPerformed(ActionEvent ev) {

        String s = ev.getActionCommand();

        if (s == null) {
            if (ev.getSource() instanceof MenuItem) {
                MenuItem i;

                s = ((MenuItem) ev.getSource()).getLabel();
            }
        }

        if (s.equals("Execute")) {
            execute();
            layoutCard.show(pCard, "result");
        } else if (s.equals("Tree")) {
            layoutCard.show(pCard, "tree");
        } else if (s.equals("Command")) {
            layoutCard.show(pCard, "command");
        } else if (s.equals("Result")) {
            layoutCard.show(pCard, "result");
        } else if (s.equals("Editor")) {
            layoutCard.show(pCard, "editor");
        } else if (s.equals("Exit")) {
            windowClosing(null);
        } else if (s.equals("Logging on")) {
            JavaSystem.setLogToSystem(true);
        } else if (s.equals("Logging off")) {
            JavaSystem.setLogToSystem(false);
        } else if (s.equals("Refresh Tree")) {
            refreshTree();
            layoutCard.show(pCard, "tree");
        } else if (s.startsWith("#")) {
            int i = Integer.parseInt(s.substring(1));

            txtCommand.setText(sRecent[i]);
        } else if (s.equals("Connect...")) {
            connect(ZaurusConnectionDialog.createConnection(fMain, "Connect",
                    new Insets(defWidth, defHeight, defLocX, defLocY)));
            refreshTree();
            layoutCard.show(pCard, "tree");
        } else if (s.equals("View Tree")) {
            layoutCard.show(pCard, "tree");
        } else if (s.equals("View Command")) {
            layoutCard.show(pCard, "command");
        } else if (s.equals("View Result")) {
            layoutCard.show(pCard, "result");
        } else if (s.equals("View Editor")) {
            layoutCard.show(pCard, "editor");
        } else if (s.equals("Results in Grid")) {
            iResult = 0;

            pResult.removeAll();
            pResult.add("Center", gResult);
            pResult.doLayout();
            layoutCard.show(pCard, "result");
        } else if (s.equals("Open Script...")) {
            FileDialog f = new FileDialog(fMain, "Open Script",
                                          FileDialog.LOAD);

            // (ulrivo): set default directory if set from command line
            if (defDirectory != null) {
                f.setDirectory(defDirectory);
            }

            f.show();

            String file = f.getFile();

            if (file != null) {
                txtCommand.setText(
                    DatabaseManagerCommon.readFile(f.getDirectory() + file));
            }

            layoutCard.show(pCard, "command");
        } else if (s.equals("Save Script...")) {
            FileDialog f = new FileDialog(fMain, "Save Script",
                                          FileDialog.SAVE);

            // (ulrivo): set default directory if set from command line
            if (defDirectory != null) {
                f.setDirectory(defDirectory);
            }

            f.show();

            String file = f.getFile();

            if (file != null) {
                DatabaseManagerCommon.writeFile(f.getDirectory() + file,
                                                txtCommand.getText());
            }
        } else if (s.equals("Save Result...")) {
            FileDialog f = new FileDialog(fMain, "Save Result",
                                          FileDialog.SAVE);

            // (ulrivo): set default directory if set from command line
            if (defDirectory != null) {
                f.setDirectory(defDirectory);
            }

            f.show();

            String file = f.getFile();

            if (file != null) {
                showResultInText();
                DatabaseManagerCommon.writeFile(f.getDirectory() + file,
                                                txtResult.getText());
            }
        } else if (s.equals("Results in Text")) {
            iResult = 1;

            pResult.removeAll();
            pResult.add("Center", txtResult);
            pResult.doLayout();
            showResultInText();
            layoutCard.show(pCard, "result");
        } else if (s.equals("AutoCommit on")) {
            try {
                cConn.setAutoCommit(true);
            } catch (SQLException e) {}
        } else if (s.equals("AutoCommit off")) {
            try {
                cConn.setAutoCommit(false);
            } catch (SQLException e) {}
        } else if (s.equals("Commit")) {
            try {
                cConn.commit();
            } catch (SQLException e) {}
        } else if (s.equals("Insert test data")) {
            insertTestData();
            layoutCard.show(pCard, "result");
        } else if (s.equals("Rollback")) {
            try {
                cConn.rollback();
            } catch (SQLException e) {}
        } else if (s.equals("Disable MaxRows")) {
            try {
                sStatement.setMaxRows(0);
            } catch (SQLException e) {}
        } else if (s.equals("Set MaxRows to 100")) {
            try {
                sStatement.setMaxRows(100);
            } catch (SQLException e) {}
        } else if (s.equals("SELECT")) {
            showHelp(DatabaseManagerCommon.selectHelp);
        } else if (s.equals("INSERT")) {
            showHelp(DatabaseManagerCommon.insertHelp);
        } else if (s.equals("UPDATE")) {
            showHelp(DatabaseManagerCommon.updateHelp);
        } else if (s.equals("DELETE")) {
            showHelp(DatabaseManagerCommon.deleteHelp);
        } else if (s.equals("CREATE TABLE")) {
            showHelp(DatabaseManagerCommon.createTableHelp);
        } else if (s.equals("DROP TABLE")) {
            showHelp(DatabaseManagerCommon.dropTableHelp);
        } else if (s.equals("CREATE INDEX")) {
            showHelp(DatabaseManagerCommon.createIndexHelp);
        } else if (s.equals("DROP INDEX")) {
            showHelp(DatabaseManagerCommon.dropIndexHelp);
        } else if (s.equals("CHECKPOINT")) {
            showHelp(DatabaseManagerCommon.checkpointHelp);
        } else if (s.equals("SCRIPT")) {
            showHelp(DatabaseManagerCommon.scriptHelp);
        } else if (s.equals("SHUTDOWN")) {
            showHelp(DatabaseManagerCommon.shutdownHelp);
        } else if (s.equals("SET")) {
            showHelp(DatabaseManagerCommon.setHelp);
        } else if (s.equals("Test Script")) {
            showHelp(DatabaseManagerCommon.testHelp);
        } else if (s.equals("Show HTML-Help in browser")) {
            try {
                System.out.println("Starting Opera on index.html");
                Runtime.getRuntime().exec(new String[] {
                    "opera", "/home/QtPalmtop/help/html/hsqldb/index.html"
                });
            } catch (IOException e) {
                System.out.println("A problem with Opera occured.");
            }
        }
    }

    /**
     * Method declaration
     *
     */
    private void initGUI() {

        Panel pQuery   = new Panel();
        Panel pCommand = new Panel();

        // define a Panel pCard which takes four different cards/views:
        // tree of tables, command SQL text area, result window and an editor/input form
        pCard      = new Panel();
        layoutCard = new CardLayout(2, 2);

        pCard.setLayout(layoutCard);

        // four buttons at the top to quickly switch between the four views
        butTree    = new Button("Tree");
        butCommand = new Button("Command");
        butResult  = new Button("Result");
        butEditor  = new Button("Editor");

        butTree.addActionListener(this);
        butCommand.addActionListener(this);
        butResult.addActionListener(this);
        butEditor.addActionListener(this);

        Panel pButtons = new Panel();

        pButtons.setLayout(new GridLayout(1, 4, 8, 8));
        pButtons.add(butTree);
        pButtons.add(butCommand);
        pButtons.add(butResult);
        pButtons.add(butEditor);

        pResult = new Panel();

        pQuery.setLayout(new BorderLayout());
        pCommand.setLayout(new BorderLayout());
        pResult.setLayout(new BorderLayout());

        Font fFont = new Font("Dialog", Font.PLAIN, 12);

        txtCommand = new TextArea(5, 40);

        txtCommand.addKeyListener(this);

        txtResult = new TextArea(20, 40);

        txtCommand.setFont(fFont);
        txtResult.setFont(new Font("Courier", Font.PLAIN, 12));

        butExecute = new Button("Execute");

        butExecute.addActionListener(this);
        pCommand.add("South", butExecute);
        pCommand.add("Center", txtCommand);

        gResult = new Grid();

        setLayout(new BorderLayout());
        pResult.add("Center", gResult);

        tTree = new Tree();

        tTree.setMinimumSize(new Dimension(200, 100));
        gResult.setMinimumSize(new Dimension(200, 300));

        eEditor = new ZaurusEditor();

        pCard.add("tree", tTree);
        pCard.add("command", pCommand);
        pCard.add("result", pResult);
        pCard.add("editor", eEditor);
        fMain.add("Center", pCard);
        fMain.add("North", pButtons);
        doLayout();
        fMain.pack();
    }

    protected void refreshTree() {
        super.refreshTree();
        eEditor.refresh(cConn);
    }
}