admintoolframe.java

用Java写的面相对象的数据库管理系统

// You can redistribute this software and/or modify it under the terms of
// the Ozone Library License version 1 published by ozone-db.org.
//
// The original code and portions created by SMB are
// Copyright (C) 1997-2000 by SMB GmbH. All rights reserved.
//
// $Id: AdminToolFrame.java,v 1.11 2000/10/28 16:55:20 daniela Exp $

package org.ozoneDB.tools;

import org.ozoneDB.DxLib.DxSet;
import org.ozoneDB.DxLib.DxIterator;
import java.awt.*;
import java.awt.event.*;
import java.util.*;


/** */
public class AdminToolFrame extends Frame implements IODevice {
    TextArea messages;
    TextArea comment;
    CommandLine commandLine;
    CommandChoice commands;
    CommandExecute exec;
    
    
    /** */
    class CloseButton extends Button implements ActionListener {
        
        
        public CloseButton() {
            super( "QUIT" );
            addActionListener( this );
        }
        
        
        public void actionPerformed( ActionEvent e ) {
            String[] com = {"quit"};
            ((AdminToolFrame)getParent()).exec.execute( com );
            System.exit( 0 );
        } 
    }
    
    
    /** */
    class ShutdownButton extends Button implements ActionListener {
        
        
        public ShutdownButton() {
            super( "SHUTDOWN & QUIT" );
            addActionListener( this );
        }
        
        
        public void actionPerformed( ActionEvent e ) {
            String[] com = {"shutdown"};
            ((AdminToolFrame)getParent()).exec.execute( com );
            System.exit( 0 );
        } 
    }
    
    
    /** */
    class CommandLine extends TextField implements ActionListener {
        
        
        public CommandLine() {
            super();
            addActionListener( this );
        }
        
        
        public void actionPerformed( ActionEvent e ) {
            StringTokenizer st = new StringTokenizer( getText() );
            String[] com = new String[st.countTokens()];
            int i = 0;
            while (st.hasMoreTokens()) {
                com[i++] = st.nextToken();
            } 
            ((AdminToolFrame)getParent()).exec.execute( com );
            setText( ((AdminToolFrame)getParent()).commands.getSelectedItem() + " " );
        } 
    }
    
    
    /** */
    class CommandChoice extends Choice implements ItemListener {
        
        
        public CommandChoice( DxSet choices ) {
            DxIterator it = choices.iterator();
            while (it.next() != null) {
                add( it.object().toString() );
            } 
            addItemListener( this );
        }
        
        
        public void itemStateChanged( ItemEvent e ) {
            ((AdminToolFrame)getParent()).commandLine.setText( e.getItem().toString() + " " );
        } 
    }
    
    
    /** */
    public AdminToolFrame() {
        super( "Ozone Administrator" );
        exec = new CommandExecute( this );
        
        setFont( new Font( "Helvetica", Font.PLAIN, 12 ) );
        setLayout( new GridBagLayout() );
        GridBagConstraints c = new GridBagConstraints();
        
        c.weightx = 1.0;
        c.weighty = 0.0;
        c.fill = GridBagConstraints.BOTH;
        c.gridwidth = GridBagConstraints.REMAINDER;
        add( new Label( "Server messages:" ), c );
        
        c.weighty = 1.0;
        messages = new TextArea( "", 10, 10, TextArea.SCROLLBARS_VERTICAL_ONLY );
        messages.setEditable( false );
        add( messages, c );
        
        c.weighty = 0.0;
        add( new Label( "Command:" ), c );
        c.gridwidth = GridBagConstraints.RELATIVE;
        commandLine = new CommandLine();
        add( commandLine, c );
        c.gridwidth = GridBagConstraints.REMAINDER;
        commands = new CommandChoice( exec.commands() );
        add( commands, c );
        
        c.weighty = 1.0;
        comment = new TextArea( "", 10, 10, TextArea.SCROLLBARS_VERTICAL_ONLY );
        comment.setEditable( false );
        add( comment, c );
        
        c.weighty = 0.1;
        c.gridwidth = GridBagConstraints.RELATIVE;
        add( new ShutdownButton(), c );
        add( new CloseButton(), c );
        
        setSize( 500, 400 );
        setLocation( 100, 100 );
        show();
    }
    
    
    /** */
    public void connect( String host, int port ) {
        try {
            exec.open( host, port );
            asyncMessage( "Connected to " + host + " at port " + port );
        } catch (Exception e) {
            MessageBox.ConfirmBox( this,
                    "Unable to open connection to" + host + " at port " + port + " ! Closing ..." );
            System.exit( 0 );
        } 
    } 
    
    
    /** */
    public void close() {
        try {
            exec.close();
        } catch (Exception e) {
        } 
        System.exit( 0 );
    } 
    
    
    /** */
    public void message( String mess ) {
        comment.append( mess + "\n" );
    } 
    
    
    /** */
    public void asyncMessage( String mess ) {
        messages.append( mess + "\n" );
    } 
    
    
    /** */
    public boolean request( String req ) {
        return MessageBox.YesNoBox( this, req ) == MessageBox.YES;
    } 
    
    
    /** */
    public static void main( String[] args ) {
        String hostname = "localhost";
        int port = 3000;
        
        System.out.println( "ozone administration tool" );
        
        AdminToolFrame adf = new AdminToolFrame();
        
        boolean help = false;
        for (int i = 0; i < args.length; i++) {
            if (args[i].startsWith( "-host" )) {
                hostname = args[i].substring( 5 );
            } else if (args[i].startsWith( "-port" )) {
                port = Integer.parseInt( args[i].substring( 5 ) );
            } else if (args[i].startsWith( "-h" )) {
                help = true;
            } else {
                System.out.println( "unknown option:" + args[i] );
                help = true;
            } 
        } 
        
        if (help) {
            System.out.println( "\nusage: ozoneAdminFrame [-host<host>] [-port<number>] [-h]\n" );
            System.out.println( "-host<host>		the host to connect to" );
            System.out.println( "-port<number>		the port number to connect to the Ozone DB" );
            System.out.println( "-h			shows this help" );
            System.exit( 0 );
        } 
        adf.connect( hostname, port );
    } 
}