com.fr.third.jgroups.demos

类 Draw

java.lang.Object

com.fr.third.jgroups.ReceiverAdapter

com.fr.third.jgroups.demos.Draw

所有已实现的接口:

ChannelListener, MembershipListener, MessageListener, Receiver, java.awt.event.ActionListener, java.util.EventListener

public class Draw
extends ReceiverAdapter
implements java.awt.event.ActionListener, ChannelListener

Shared whiteboard, each new instance joins the same group. Each instance chooses a random color, mouse moves are broadcast to all group members, which then apply them to their canvas

作者:

Bela Ban, Oct 17 2001

嵌套类概要

嵌套类

限定符和类型	类和说明
protected class	Draw.DrawPanel

字段概要

字段

限定符和类型	字段和说明
protected java.lang.String	cluster_name
protected boolean	send_own_state_on_merge

构造器概要

构造器

构造器和说明
Draw(JChannel channel)
Draw(JChannel channel, boolean use_state, long state_timeout)
Draw(java.lang.String props, boolean no_channel, boolean jmx, boolean use_state, long state_timeout, boolean use_unicasts, java.lang.String name, boolean send_own_state_on_merge, AddressGenerator gen)

方法概要

方法

限定符和类型	方法和说明
void	actionPerformed(java.awt.event.ActionEvent e)
void	channelClosed(Channel channel) Channel has been closed notification callback
void	channelConnected(Channel channel) Channel has been connected notification callback
void	channelDisconnected(Channel channel) Channel has been disconnected notification callback
void	clearPanel()
java.lang.String	getClusterName()
void	getState(java.io.OutputStream ostream) Allows an application to write a state through a provided OutputStream.
void	go()
static void	main(java.lang.String[] args)
void	receive(Message msg) Called when a message is received.
void	sendClearPanelMsg()
protected void	sendOwnState(java.util.Map<java.awt.Point,java.awt.Color> copy)
void	setClusterName(java.lang.String clustername)
void	setState(java.io.InputStream istream) Allows an application to read a state through a provided InputStream.
void	stop()
void	viewAccepted(View v) Called when a change in membership has occurred.

从类继承的方法 com.fr.third.jgroups.ReceiverAdapter

block, suspect, unblock

从类继承的方法 java.lang.Object

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

字段详细资料

cluster_name

protected java.lang.String cluster_name

send_own_state_on_merge

protected boolean send_own_state_on_merge

构造器详细资料

Draw

public Draw(java.lang.String props,
    boolean no_channel,
    boolean jmx,
    boolean use_state,
    long state_timeout,
    boolean use_unicasts,
    java.lang.String name,
    boolean send_own_state_on_merge,
    AddressGenerator gen)
     throws java.lang.Exception

抛出:

java.lang.Exception

Draw

public Draw(JChannel channel)
     throws java.lang.Exception

抛出:

java.lang.Exception

Draw

public Draw(JChannel channel,
    boolean use_state,
    long state_timeout)
     throws java.lang.Exception

抛出:

java.lang.Exception

方法详细资料

getClusterName

public java.lang.String getClusterName()

setClusterName

public void setClusterName(java.lang.String clustername)

main

public static void main(java.lang.String[] args)

go

public void go()
        throws java.lang.Exception

抛出:

java.lang.Exception

receive

public void receive(Message msg)

从类复制的说明: ReceiverAdapter

Called when a message is received.

指定者:

receive 在接口中 MessageListener

覆盖:

receive 在类中 ReceiverAdapter

viewAccepted

public void viewAccepted(View v)

从类复制的说明: ReceiverAdapter

Called when a change in membership has occurred. No long running actions, sending of messages or anything that could block should be done in this callback. If some long running action needs to be performed, it should be done in a separate thread.

Note that on reception of the first view (a new member just joined), the channel will not yet be in the connected state. This only happens when Channel.connect(String) returns.

指定者:

viewAccepted 在接口中 MembershipListener

覆盖:

viewAccepted 在类中 ReceiverAdapter

getState

public void getState(java.io.OutputStream ostream)
              throws java.lang.Exception

从类复制的说明: ReceiverAdapter

Allows an application to write a state through a provided OutputStream. After the state has been written the OutputStream doesn't need to be closed as stream closing is automatically done when a calling thread returns from this callback.

指定者:

getState 在接口中 MessageListener

覆盖:

getState 在类中 ReceiverAdapter

参数:

ostream - the OutputStream

抛出:

java.lang.Exception - if the streaming fails, any exceptions should be thrown so that the state requester can re-throw them and let the caller know what happened

另请参阅:

OutputStream.close()

setState

public void setState(java.io.InputStream istream)
              throws java.lang.Exception

从类复制的说明: ReceiverAdapter

Allows an application to read a state through a provided InputStream. After the state has been read the InputStream doesn't need to be closed as stream closing is automatically done when a calling thread returns from this callback.

指定者:

setState 在接口中 MessageListener

覆盖:

setState 在类中 ReceiverAdapter

参数:

istream - the InputStream

抛出:

java.lang.Exception - if the streaming fails, any exceptions should be thrown so that the state requester can catch them and thus know what happened

另请参阅:

InputStream.close()

clearPanel

public void clearPanel()

sendClearPanelMsg

public void sendClearPanelMsg()

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

指定者:

actionPerformed 在接口中 java.awt.event.ActionListener

stop

public void stop()

sendOwnState

protected void sendOwnState(java.util.Map<java.awt.Point,java.awt.Color> copy)

channelConnected

public void channelConnected(Channel channel)

从接口复制的说明: ChannelListener

Channel has been connected notification callback

指定者:

channelConnected 在接口中 ChannelListener

参数:

channel - the channel that has been connected

channelDisconnected

public void channelDisconnected(Channel channel)

从接口复制的说明: ChannelListener

Channel has been disconnected notification callback

指定者:

channelDisconnected 在接口中 ChannelListener

参数:

channel - the disconnected channel

channelClosed

public void channelClosed(Channel channel)

从接口复制的说明: ChannelListener

Channel has been closed notification callback

指定者:

channelClosed 在接口中 ChannelListener

参数:

channel - the closed channel