com.fr.third.jgroups.demos

类 QuoteServer

java.lang.Object

com.fr.third.jgroups.ReceiverAdapter

com.fr.third.jgroups.demos.QuoteServer

所有已实现的接口:

MembershipListener, MessageListener, Receiver

public class QuoteServer
extends ReceiverAdapter

Example of a replicated quote server. The server maintains state which consists of a list of quotes and their corresponding values. When it is started, it tries to reach other quote servers to get its initial state. If it does not receive any response after 5 seconds, it assumes it is the first server and starts processing requests.

Any updates are multicast across the cluster

作者:

Bela Ban

构造器概要

构造器

构造器和说明
QuoteServer()

方法概要

方法

限定符和类型	方法和说明
java.util.Hashtable	getAllStocks()
float	getQuote(java.lang.String stock_name)
void	getState(java.io.OutputStream ostream) Allows an application to write a state through a provided OutputStream.
static void	main(java.lang.String[] args)
void	printAllStocks()
void	setQuote(java.lang.String stock_name, java.lang.Float value)
void	setState(java.io.InputStream istream) Allows an application to read a state through a provided InputStream.
void	start()
void	viewAccepted(View new_view) Called when a change in membership has occurred.

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

block, receive, suspect, unblock

从类继承的方法 java.lang.Object

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

构造器详细资料

QuoteServer

public QuoteServer()

方法详细资料

viewAccepted

public void viewAccepted(View new_view)

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

start

public void start()

getQuote

public float getQuote(java.lang.String stock_name)
               throws java.lang.Exception

抛出:

java.lang.Exception

setQuote

public void setQuote(java.lang.String stock_name,
            java.lang.Float value)

getAllStocks

public java.util.Hashtable getAllStocks()

printAllStocks

public void printAllStocks()

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()

main

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