public class LoggedInUserTable {
/** A Hashtable of all of the active users. */
private static Hashtable LoggedInUsers = new Hashtable ();
public static boolean isLoggedInUser (
String username) {
return LoggedInUsers.containsValue(username);
}
public static void addLoggedInUser ( String sessionId, String username) {
LoggedInUsers.put (sessionId, username);
}
public static String getSessionId(String username) {
String sessionId = "";
Enumeration enum = LoggedInUsers.keys();
while(enum!= null && enum.hasMoreElements()){
String key = (String)enum.nextElement();
String value = (String)LoggedInUsers.get(key);
if(value.equals(username))
return key;
}
return sessionId;
}
public static void removeLoggedInUser(String sessionId){
LoggedInUsers.remove(sessionId);
}
