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  1. /*
  2.  * Copyright (c) 2010, Manuel Mausz. All rights reserved.
  3.  *
  4.  * Redistribution and use in source and binary forms, with or without
  5.  * modification, are permitted provided that the following conditions
  6.  * are met:
  7.  *
  8.  *   - Redistributions of source code must retain the above copyright
  9.  *     notice, this list of conditions and the following disclaimer.
  10.  *
  11.  *   - Redistributions in binary form must reproduce the above copyright
  12.  *     notice, this list of conditions and the following disclaimer in the
  13.  *     documentation and/or other materials provided with the distribution.
  14.  *
  15.  *   - The names of the authors may not be used to endorse or promote products
  16.  *     derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  19.  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  20.  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  21.  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  22.  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  23.  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  24.  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  25.  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  26.  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  27.  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28.  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  */
  30.  
  31. import java.rmi.server.UnicastRemoteObject;
  32. import java.rmi.RemoteException;
  33. import java.util.Date;
  34.  
  35. /*
  36.  * client --> server interface implementation
  37.  *
  38.  * @author Manuel Mausz (0728348)
  39.  */
  40. public class C2SInterfaceImpl
  41.   extends UnicastRemoteObject
  42.   implements C2SInterface
  43. {
  44.   private Server server;
  45.   private Server.UserRecord user = null;
  46.  
  47.   /*--------------------------------------------------------------------------*/
  48.  
  49.   C2SInterfaceImpl(Server server)
  50.     throws RemoteException
  51.   {
  52.     this.server = server;
  53.   }
  54.  
  55.   /*--------------------------------------------------------------------------*/
  56.  
  57.   public boolean register(String username, String pass)
  58.     throws RemoteException
  59.   {
  60.     if (user != null)
  61.       throw new RemoteException("Unable to register. Already logged in.");
  62.     return server.users.register(username, pass);
  63.   }
  64.  
  65.   /*--------------------------------------------------------------------------*/
  66.  
  67.   public boolean login(String username, String pass, S2CInterface s2ciface)
  68.     throws RemoteException
  69.   {
  70.     if (user != null)
  71.       throw new RemoteException("Unable to log in. Already logged in.");
  72.     user = server.users.login(username, pass, s2ciface);
  73.     if (user == null)
  74.       return false;
  75.     return true;
  76.   }
  77.  
  78.   /*--------------------------------------------------------------------------*/
  79.  
  80.   public void checkLoggedIn()
  81.     throws RemoteException
  82.   {
  83.     if (user == null)
  84.       throw new RemoteException("Not logged in.");
  85.   }
  86.  
  87.   /*--------------------------------------------------------------------------*/
  88.  
  89.   public boolean create(String event, String location, int duration)
  90.     throws RemoteException
  91.   {
  92.     checkLoggedIn();
  93.     return server.events.create(user, event, location, duration);
  94.   }
  95.  
  96.   /*--------------------------------------------------------------------------*/
  97.  
  98.   public void invite(String event, String invitee)
  99.     throws RemoteException
  100.   {
  101.     checkLoggedIn();
  102.     server.events.invite(user, event, invitee);
  103.   }
  104.  
  105.   /*--------------------------------------------------------------------------*/
  106.  
  107.   public void addDate(String event, Date date)
  108.     throws RemoteException
  109.   {
  110.     checkLoggedIn();
  111.     server.events.addDate(user, event, date);
  112.   }
  113.  
  114.   /*--------------------------------------------------------------------------*/
  115.  
  116.   public String event2String(String event)
  117.     throws RemoteException
  118.   {
  119.     checkLoggedIn();
  120.     return server.events.toString(event);
  121.   }
  122.  
  123.   /*--------------------------------------------------------------------------*/
  124.  
  125.   public void vote(String event, Date[] dates)
  126.     throws RemoteException
  127.   {
  128.     checkLoggedIn();
  129.     synchronized(user)
  130.     {
  131.       server.events.vote(event, user.name, dates);
  132.     }
  133.   }
  134.  
  135.   /*--------------------------------------------------------------------------*/
  136.  
  137.   public void finalize(String event)
  138.     throws RemoteException
  139.   {
  140.     checkLoggedIn();
  141.     server.events.finalize(user, event);
  142.   }
  143.  
  144.   /*--------------------------------------------------------------------------*/
  145.  
  146.   public boolean logout()
  147.     throws RemoteException
  148.   {
  149.     checkLoggedIn();
  150.     server.users.logout(user);
  151.     user = null;
  152.     return true;
  153.   }
  154. }
  155.