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java.lang.Objectjava.awt.Component
java.awt.Container
java.awt.Window
java.awt.Frame
org.jgroups.demos.Topology
Demonstrates the membership service. Each member is represented by a rectangle that contains the addresses of all the members. The coordinator (= oldest member in the group) is painted in blue. New members can be started; all existing members will update their graphical appearance to reflect the new membership. When the coordinator itself is killed, another one will take over (the next in rank).
A nice demo is to start a number of Topology instances at the same time. All of them will be blue (all are coordinators since they don't find each other). Then the MERGE2 protocol sets in and only one will retain its coordinator role.
Nested Class Summary |
Nested classes inherited from class java.awt.Frame |
java.awt.Frame.AccessibleAWTFrame |
Nested classes inherited from class java.awt.Window |
java.awt.Window.AccessibleAWTWindow |
Nested classes inherited from class java.awt.Container |
java.awt.Container.AccessibleAWTContainer |
Nested classes inherited from class java.awt.Component |
java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy |
Field Summary |
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 |
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 | |
Topology()
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Method Summary | |
void |
addNode(java.lang.Object member)
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void |
block()
Called whenever the member needs to stop sending messages. |
void |
coordinatorChosen()
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void |
drawNode(java.awt.Graphics g,
int x,
int y,
java.lang.String label,
int style)
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void |
drawTopology(java.awt.Graphics g)
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static void |
main(java.lang.String[] args)
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void |
paint(java.awt.Graphics g)
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void |
removeNode(java.lang.Object member)
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void |
setState(java.util.Vector mbrs)
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void |
start()
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void |
suspect(Address suspected_mbr)
Called whenever a member is suspected of having crashed, but has not yet been excluded. |
void |
viewAccepted(View view)
Called when a change in membership has occurred. |
void |
windowActivated(java.awt.event.WindowEvent e)
|
void |
windowClosed(java.awt.event.WindowEvent e)
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void |
windowClosing(java.awt.event.WindowEvent e)
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void |
windowDeactivated(java.awt.event.WindowEvent e)
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void |
windowDeiconified(java.awt.event.WindowEvent e)
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void |
windowIconified(java.awt.event.WindowEvent e)
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void |
windowOpened(java.awt.event.WindowEvent e)
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Methods inherited from class java.awt.Frame |
addNotify, finalize, getAccessibleContext, getCursorType, getExtendedState, getFrames, getIconImage, getMaximizedBounds, getMenuBar, getState, getTitle, isResizable, isUndecorated, paramString, remove, removeNotify, setCursor, setExtendedState, setIconImage, setMaximizedBounds, setMenuBar, setResizable, setState, setTitle, setUndecorated |
Methods inherited from class java.awt.Window |
addPropertyChangeListener, addPropertyChangeListener, addWindowFocusListener, addWindowListener, addWindowStateListener, applyResourceBundle, applyResourceBundle, createBufferStrategy, createBufferStrategy, dispose, getBufferStrategy, getFocusableWindowState, getFocusCycleRootAncestor, getFocusOwner, getFocusTraversalKeys, getGraphicsConfiguration, getInputContext, getListeners, getLocale, getMostRecentFocusOwner, getOwnedWindows, getOwner, getToolkit, getWarningString, getWindowFocusListeners, getWindowListeners, getWindowStateListeners, hide, isActive, isFocusableWindow, isFocusCycleRoot, isFocused, isShowing, pack, postEvent, processEvent, processWindowEvent, processWindowFocusEvent, processWindowStateEvent, removeWindowFocusListener, removeWindowListener, removeWindowStateListener, setCursor, setFocusableWindowState, setFocusCycleRoot, setLocationRelativeTo, 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, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, print, printComponents, processContainerEvent, remove, remove, removeAll, removeContainerListener, setFocusTraversalKeys, setFocusTraversalPolicy, setFont, setLayout, transferFocusBackward, 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, getBackground, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isOpaque, 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, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, size, toString, transferFocus, transferFocusUpCycle |
Methods inherited from class java.lang.Object |
clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.awt.MenuContainer |
getFont, postEvent |
Constructor Detail |
public Topology()
Method Detail |
public void addNode(java.lang.Object member)
public void removeNode(java.lang.Object member)
public void drawNode(java.awt.Graphics g, int x, int y, java.lang.String label, int style)
public void drawTopology(java.awt.Graphics g)
public void paint(java.awt.Graphics g)
public void viewAccepted(View view)
MembershipListener
viewAccepted
in interface MembershipListener
public void suspect(Address suspected_mbr)
MembershipListener
suspect
in interface MembershipListener
public void block()
MembershipListener
block
in interface MembershipListener
public void setState(java.util.Vector mbrs)
public void coordinatorChosen()
public void windowActivated(java.awt.event.WindowEvent e)
windowActivated
in interface java.awt.event.WindowListener
public void windowClosed(java.awt.event.WindowEvent e)
windowClosed
in interface java.awt.event.WindowListener
public void windowClosing(java.awt.event.WindowEvent e)
windowClosing
in interface java.awt.event.WindowListener
public void windowDeactivated(java.awt.event.WindowEvent e)
windowDeactivated
in interface java.awt.event.WindowListener
public void windowDeiconified(java.awt.event.WindowEvent e)
windowDeiconified
in interface java.awt.event.WindowListener
public void windowIconified(java.awt.event.WindowEvent e)
windowIconified
in interface java.awt.event.WindowListener
public void windowOpened(java.awt.event.WindowEvent e)
windowOpened
in interface java.awt.event.WindowListener
public void start() throws java.lang.Exception
java.lang.Exception
public static void main(java.lang.String[] args)
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