Class Dealer

java.lang.Object
  Dealer

public class Dealer

extends java.lang.Object

Field Summary

(package private) MyChannel	chan
(package private) static int	count
(package private) static int	current_player
(package private) static boolean	game_started
private MessageDrivenContext	m_ctx
(package private) static int	NUM_PARTICIPANTS
(package private) static int	NUM_PLAYERS
(package private) static java.lang.String[]	player
(package private) static java.util.Random	rand
(package private) static int[]	score

Constructor Summary

Dealer()

Method Summary

private boolean	dealerIsAhead() Indicates if the dealer is winning.
void	ejbCreate() Called when the server wants to create a new instance of this MDB.
void	ejbRemove() Called when the server no longer wants to keep this MDB instance.
private void	notifyPlayer(GameEvent event) Let the players know whose turn it is.
void	onMessage(Message msg) This method is called whenever a message is sent to the queue associated with this MDB.
private void	processJoinRequest(GameEvent event) Process PLAYER_JOIN_REQUEST events.
private void	processTurn(GameEvent event) Process PLAYER_REDRAWS and PLAYER_PASSES events.
private int	randomValue() Return a random value between 1 and 100.
private void	sendValue(GameEvent event) Let all players know the current score of some player.
void	setMessageDrivenContext(MessageDrivenContext ctx) Remember the context for this MDB.

Methods inherited from class java.lang.Object

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

Field Detail

m_ctx

private MessageDrivenContext m_ctx

chan

MyChannel chan

game_started

static boolean game_started

NUM_PLAYERS

static final int NUM_PLAYERS

See Also:

Constant Field Values

NUM_PARTICIPANTS

static final int NUM_PARTICIPANTS

See Also:

Constant Field Values

count

static int count

player

static java.lang.String[] player

score

static int[] score

current_player

static int current_player

rand

static java.util.Random rand

Constructor Detail

Dealer

public Dealer()

Method Detail

setMessageDrivenContext

public void setMessageDrivenContext(MessageDrivenContext ctx)

Remember the context for this MDB.

Parameters:

ctx - the context for this MDB

ejbCreate

public void ejbCreate()

Called when the server wants to create a new instance of this MDB. Creates a MyChannel object to use for outbound communication.

ejbRemove

public void ejbRemove()

Called when the server no longer wants to keep this MDB instance. Closes the MyChannel object created in ejbCreate.

randomValue

private int randomValue()

Return a random value between 1 and 100.

Returns:

random value

sendValue

private void sendValue(GameEvent event)
                throws java.lang.Exception

Let all players know the current score of some player. (Sends PLAYER_GOT_VALUE event.)

Parameters:

event - an event object for this method to use - its contents on method invocation are unimportant and on method return are undefined

Throws:

java.lang.Exception

notifyPlayer

private void notifyPlayer(GameEvent event)
                   throws java.lang.Exception

Let the players know whose turn it is. (Sends TURN_NOTIFICATION event.)

Parameters:

event - an event object for this method to use - its contents on method invocation are unimportant and on method return are undefined

Throws:

java.lang.Exception

processJoinRequest

private void processJoinRequest(GameEvent event)
                         throws java.lang.Exception

Process PLAYER_JOIN_REQUEST events.

Parameters:

event - the PLAYER_JOIN_REQUEST event

Throws:

java.lang.Exception

dealerIsAhead

private boolean dealerIsAhead()

Indicates if the dealer is winning.

Returns:

true iff the dealer is currently in the lead (and not tied for the lead)

processTurn

private void processTurn(GameEvent event)
                  throws java.lang.Exception

Process PLAYER_REDRAWS and PLAYER_PASSES events.

Parameters:

event - the PLAYER_REDRAWS or PLAYER_PASSES event

Throws:

java.lang.Exception

onMessage

public void onMessage(Message msg)

This method is called whenever a message is sent to the queue associated with this MDB. (See the DestinationName property in the orion-ejb-jar.xml file.)

Parameters:

msg - assumed to be a javax.jms.ObjectMessage containting a GameEvent object