Package org.jgroups.demos

Class TotalOrder

java.lang.Object

java.awt.Component

java.awt.Container

java.awt.Window

java.awt.Frame

org.jgroups.demos.TotalOrder

All Implemented Interfaces:

ImageObserver, MenuContainer, Serializable, Accessible

public class TotalOrder
extends Frame

Originally written to be a demo for TOTAL order (code to be written by a student). In the meantime, it evolved into a state transfer demo. All members maintain a shared matrix and continually broadcast changes to be applied to a randomly chosen field (e.g. multiplication of field with new value, division, addition, subtraction). Each member can be started independently (starts to broadcast update messages to all members). When "Stop" is pressed, a stop message is broadcast to all members, causing them to stop sending messages. The "Clear" button clears the shared state; "GetState" refreshes it from the shared group state (using the state transfer protocol).

If the demo is to be used to show total order, then the SEQUENCER protocol would have to be added to the stack.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	TotalOrder.EventHandler
(package private) class	TotalOrder.SenderThread

Nested classes/interfaces inherited from class java.awt.Frame

Frame.AccessibleAWTFrame

Nested classes/interfaces inherited from class java.awt.Window

Window.AccessibleAWTWindow, Window.Type

Nested classes/interfaces inherited from class java.awt.Container

Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final Panel	button_panel
(package private) MyCanvas	canvas
(package private) JChannel	channel
(package private) final Button	clear
(package private) final Font	def_font
(package private) final Font	def_font2
(package private) int	field_size
(package private) final Button	get_state
(package private) final MenuBar	menubar
private int	num
private int	num_additions
private int	num_divisions
(package private) int	num_fields
private int	num_multiplications
private int	num_subtractions
(package private) final Button	quit
(package private) TotalOrder.SenderThread	sender
(package private) final Button	start
(package private) final Button	stop
(package private) long	timeout
(package private) static final int	x_offset
(package private) static final int	y_offset

Fields inherited from class java.awt.Frame

CROSSHAIR_CURSOR, DEFAULT_CURSOR, E_RESIZE_CURSOR, HAND_CURSOR, ICONIFIED, MAXIMIZED_BOTH, MAXIMIZED_HORIZ, MAXIMIZED_VERT, MOVE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR, NORMAL, NW_RESIZE_CURSOR, S_RESIZE_CURSOR, SE_RESIZE_CURSOR, SW_RESIZE_CURSOR, TEXT_CURSOR, W_RESIZE_CURSOR, WAIT_CURSOR

Fields inherited from class java.awt.Component

accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Constructors

Constructor	Description
TotalOrder(String title, long timeout, int num_fields, int field_size, String props, int num)

Method Summary

Modifier and Type	Method	Description
private MenuBar	createMenuBar()
private TotOrderRequest	createRandomRequest()
(package private) static void	error(String s)
protected static void	help()
static void	main(String[] args)
(package private) void	processRequest(TotOrderRequest req)
(package private) void	startSender()
(package private) void	stopSender()

Methods inherited from class java.awt.Frame

addNotify, getAccessibleContext, getCursorType, getExtendedState, getFrames, getIconImage, getMaximizedBounds, getMenuBar, getState, getTitle, isResizable, isUndecorated, paramString, remove, removeNotify, setBackground, setCursor, setExtendedState, setIconImage, setMaximizedBounds, setMenuBar, setOpacity, setResizable, setShape, setState, setTitle, setUndecorated

Methods inherited from class java.awt.Window

addPropertyChangeListener, addPropertyChangeListener, addWindowFocusListener, addWindowListener, addWindowStateListener, applyResourceBundle, applyResourceBundle, createBufferStrategy, createBufferStrategy, dispose, getBackground, getBufferStrategy, getFocusableWindowState, getFocusCycleRootAncestor, getFocusOwner, getFocusTraversalKeys, getIconImages, getInputContext, getListeners, getLocale, getModalExclusionType, getMostRecentFocusOwner, getOpacity, getOwnedWindows, getOwner, getOwnerlessWindows, getShape, getToolkit, getType, getWarningString, getWindowFocusListeners, getWindowListeners, getWindows, getWindowStateListeners, hide, isActive, isAlwaysOnTop, isAlwaysOnTopSupported, isAutoRequestFocus, isFocusableWindow, isFocusCycleRoot, isFocused, isLocationByPlatform, isOpaque, isShowing, isValidateRoot, pack, paint, postEvent, processEvent, processWindowEvent, processWindowFocusEvent, processWindowStateEvent, removeWindowFocusListener, removeWindowListener, removeWindowStateListener, reshape, setAlwaysOnTop, setAutoRequestFocus, setBounds, setBounds, setCursor, setFocusableWindowState, setFocusCycleRoot, setIconImages, setLocation, setLocation, setLocationByPlatform, setLocationRelativeTo, setMinimumSize, setModalExclusionType, setSize, setSize, setType, setVisible, show, toBack, toFront

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, print, printComponents, processContainerEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, setLayout, transferFocusDownCycle, update, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, requestFocusInWindow, resize, resize, revalidate, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setMaximumSize, setMixingCutoutShape, setName, setPreferredSize, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.awt.MenuContainer

getFont, postEvent

Field Details

def_font

final Font def_font

def_font2

final Font def_font2

canvas

MyCanvas canvas

menubar

final MenuBar menubar

start

final Button start

stop

final Button stop

clear

final Button clear

get_state

final Button get_state

quit

final Button quit

button_panel

final Panel button_panel

sender

TotalOrder.SenderThread sender

channel

JChannel channel

timeout

long timeout

field_size

int field_size

num_fields

int num_fields

x_offset

static final int x_offset

See Also:

• Constant Field Values

y_offset

static final int y_offset

See Also:

• Constant Field Values

num

private int num

num_additions

private int num_additions

num_subtractions

private int num_subtractions

num_divisions

private int num_divisions

num_multiplications

private int num_multiplications

Constructor Details

TotalOrder

public TotalOrder(String title,
 long timeout,
 int num_fields,
 int field_size,
 String props,
 int num)

Method Details

error

static void error(String s)

processRequest

void processRequest(TotOrderRequest req)
             throws Exception

Throws:

Exception

startSender

void startSender()

stopSender

void stopSender()

createMenuBar

private MenuBar createMenuBar()

createRandomRequest

private TotOrderRequest createRandomRequest()

main

public static void main(String[] args)

help

protected static void help()