swpchat.server
Class NickNameCollection

java.lang.Object
  |
  +--swpchat.server.NickNameCollection

public class NickNameCollection

extends java.lang.Object

Field Summary

private static java.lang.String	CLS
private java.util.HashMap	sessionHash

Constructor Summary

NickNameCollection()

Method Summary

boolean	containsNickname(java.lang.String newNickname) checks if a userinfo with the given nickname already exists
boolean	containsSessionKey(java.lang.String sessionKey)
java.lang.String	getIPAddress(java.lang.String sessionKey) looks up in sessionHash the value that maps to the specific key and returns a part of the value
java.lang.String	getNick(java.lang.String sessionKey)
java.lang.String	getSessionKeyByNick(java.lang.String nickname) returns the sessionKey that (gehört zu) nickname
UserInfo	getUserInfo(java.lang.String sessionKey)
UserInfo	getUserInfoByNick(java.lang.String nickname) returns the userInfo that contains the given nickname
void	removeSession(java.lang.String sessionKey) Remove the session identified by its sessionKey from the collection.
void	setIPAddress(java.lang.String sessionKey, java.lang.String ipAddress) looks up in sessionHash the value that maps to the specific key and adds a new info to the value object
boolean	tryToAddSession(java.lang.String sessionKey, java.lang.String nickname) Method tries to add session to hashtable and is threadsave
boolean	tryToChangeSessionNick(java.lang.String sessionKey, java.lang.String newNickname) Change the nickname of a session.

Methods inherited from class java.lang.Object

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

Field Detail

CLS

private static final java.lang.String CLS

sessionHash

private java.util.HashMap sessionHash

Constructor Detail

NickNameCollection

public NickNameCollection()

Method Detail

tryToAddSession

public boolean tryToAddSession(java.lang.String sessionKey,
                               java.lang.String nickname)

Method tries to add session to hashtable and is threadsave

Parameters:

sessionKey -

nickname -

Returns:

true iff nick could be added to collection

tryToChangeSessionNick

public boolean tryToChangeSessionNick(java.lang.String sessionKey,
                                      java.lang.String newNickname)
                               throws NoSuchMemberException

Change the nickname of a session.

Parameters:

sessionKey, - newNickname

Returns:

false iff the newNickname was not allowed in the collection.

Throws:

NoSuchMemberException - if there is no session with the sessionKey in the collection.

containsNickname

public boolean containsNickname(java.lang.String newNickname)

checks if a userinfo with the given nickname already exists

removeSession

public void removeSession(java.lang.String sessionKey)
                   throws NoSuchMemberException

Remove the session identified by its sessionKey from the collection.

Parameters:

sessionKey -

Throws:

NoSuchMemberException - if there is no session with the sessionKey in the collection.

containsSessionKey

public boolean containsSessionKey(java.lang.String sessionKey)

getNick

public java.lang.String getNick(java.lang.String sessionKey)

getUserInfo

public UserInfo getUserInfo(java.lang.String sessionKey)

Parameters:

sessionKey - the key of the desired userInfo

Returns:

matching userInfo

getUserInfoByNick

public UserInfo getUserInfoByNick(java.lang.String nickname)

returns the userInfo that contains the given nickname

Parameters:

nickname - the nickname

Returns:

UserInfo object

getSessionKeyByNick

public java.lang.String getSessionKeyByNick(java.lang.String nickname)

returns the sessionKey that (gehört zu) nickname

Parameters:

nickname, - the nick

Returns:

sessionKey, the requested sessionKey

getIPAddress

public java.lang.String getIPAddress(java.lang.String sessionKey)
                              throws NoSuchMemberException

looks up in sessionHash the value that maps to the specific key and returns a part of the value

Parameters:

sessionKey, - the key that identyfies the requested user and its IPAddress

Returns:

String, the IPAddress of the user with the requested sessionKey

setIPAddress

public void setIPAddress(java.lang.String sessionKey,
                         java.lang.String ipAddress)
                  throws NoSuchMemberException

looks up in sessionHash the value that maps to the specific key and adds a new info to the value object

Parameters:

sessionKey, - the key that identyfies the requested user and its IPAddress

Returns:

ipAddress, the IPAddress of the user with this sessionKey