示例#1
0
  private boolean isValidUserAction(int userAction, int userID, int gameID) {
    if (!isUserNextPlayer(userID, gameID)) {
      return false;
    }
    Connection con = DatabaseConnector.getConnection();
    Statement stmt;
    ResultSet rs;

    int nextStationAction = -1;
    try {
      stmt = con.createStatement();
      // Checken ob Spieler an der Reihe ist
      rs =
          stmt.executeQuery(
              "SELECT next_station_action FROM stations NATURAL JOIN games WHERE game_id="
                  + gameID
                  + " AND user_id="
                  + userID);
      if (rs.next()) {
        nextStationAction = rs.getInt("next_station_action");
      }
      con.commit();
      if (userAction == nextStationAction) return true;
      else return false;
    } catch (SQLException e) {
      e.printStackTrace();
      return false;
    }
  }
示例#2
0
 // Sicherheitchecks
 // Checken ob ein User an einem Spiel teilnimmt.
 private boolean isUserInGame(int userID, int gameID) {
   Connection con = DatabaseConnector.getConnection();
   Statement stmt;
   ResultSet rs;
   try {
     stmt = con.createStatement();
     // Checken ob Spieler am Spiel teilnimmt
     rs =
         stmt.executeQuery(
             "SELECT user_id FROM stations NATURAL JOIN games WHERE user_id="
                 + userID
                 + " AND game_id="
                 + gameID);
     if (rs.next()) {
       con.commit();
       return true;
     } else {
       con.commit();
       return false;
     }
   } catch (SQLException e) {
     e.printStackTrace();
     return false;
   }
 }
示例#3
0
 // Checken ob ein User an der Reihe ist in diesem Spiel.
 private boolean isUserNextPlayer(int userID, int gameID) {
   if (!isUserInGame(userID, gameID)) {
     return false;
   }
   Connection con = DatabaseConnector.getConnection();
   Statement stmt;
   ResultSet rs;
   try {
     stmt = con.createStatement();
     // Checken ob Spieler am Spiel teilnimmt
     int nextStationType = -1, stationType = -2;
     rs = stmt.executeQuery("SELECT next_station_type FROM games WHERE game_id=" + gameID);
     if (rs.next()) {
       nextStationType = rs.getInt("next_station_type");
       con.commit();
     }
     rs =
         stmt.executeQuery(
             "SELECT station_type FROM stations NATURAL JOIN users WHERE game_id="
                 + gameID
                 + " AND user_id="
                 + userID);
     if (rs.next()) {
       stationType = rs.getInt("station_type");
       con.commit();
     }
     if (nextStationType == stationType) return true;
     else return false;
   } catch (SQLException e) {
     e.printStackTrace();
     return false;
   }
 }
示例#4
0
 private void brewBeer(int userID, int gameID, int amount) {
   Connection con = DatabaseConnector.getConnection();
   Statement stmt;
   try {
     int stationID = getStationID(con, userID, gameID);
     stmt = con.createStatement();
     // Bierlieferung eintragen (Produktion)
     stmt.executeUpdate(
         "INSERT INTO deliveries(receiver_id,amount,week) VALUES("
             + stationID
             + ","
             + amount
             + ","
             + (getGameWeek(con, gameID) + 2)
             + ")");
     setNextStationAction(con, stationID, ACTION_COLLECT_DELIVERY);
     endOfTurn(con, gameID, stationID);
     con.commit();
     con.close();
   } catch (SQLException e) {
     try {
       con.rollback();
       con.close();
     } catch (SQLException e1) {
       e1.printStackTrace();
     }
     e.printStackTrace();
   }
 }
示例#5
0
 private void orderBeer(int userID, int gameID, int amount) {
   Connection con = DatabaseConnector.getConnection();
   Statement stmt;
   try {
     int stationID = getStationID(con, userID, gameID);
     stmt = con.createStatement();
     // Bierbestellung eintragen
     stmt.executeUpdate(
         "INSERT INTO orders(sender_id,amount,week) VALUES("
             + getStationID(con, userID, gameID)
             + ","
             + amount
             + ","
             + getGameWeek(con, gameID)
             + ")");
     int stationType = getStationType(con, stationID);
     if (stationType == 0) setNextStationAction(con, stationID, ACTION_ORDER_BEER);
     else setNextStationAction(con, stationID, ACTION_COLLECT_DELIVERY);
     endOfTurn(con, gameID, stationID);
     con.commit();
     con.close();
   } catch (SQLException e) {
     try {
       con.rollback();
       con.close();
     } catch (SQLException e1) {
       e1.printStackTrace();
     }
     e.printStackTrace();
   }
 }
示例#6
0
 private String acceptNextOrder(int userID, int gameID) {
   Connection con = DatabaseConnector.getConnection();
   Statement stmt;
   ResultSet rs;
   try {
     int stationID = getStationID(con, userID, gameID);
     stmt = con.createStatement();
     rs =
         stmt.executeQuery(
             "SELECT amount FROM orders WHERE sender_id="
                 + getSellerID(con, stationID)
                 + " AND week="
                 + getGameWeek(con, gameID));
     if (rs.next()) {
       int amount = rs.getInt("amount");
       stmt.executeUpdate(
           "UPDATE stations SET backorder=backorder+" + amount + " WHERE station_id=" + stationID);
     }
     setNextStationAction(con, stationID, ACTION_DELIVER_BEER);
     con.commit();
     con.close();
   } catch (SQLException e) {
     try {
       con.rollback();
       con.close();
     } catch (SQLException e1) {
       e1.printStackTrace();
     }
     e.printStackTrace();
   }
   Gson gson = new Gson();
   return gson.toJson("");
 }
示例#7
0
 // POST-Requests
 private void collectDelivery(int userID, int gameID) {
   Connection con = DatabaseConnector.getConnection();
   Statement stmt;
   ResultSet rs;
   try {
     int stationID = getStationID(con, userID, gameID);
     stmt = con.createStatement();
     rs =
         stmt.executeQuery(
             "SELECT amount FROM deliveries WHERE receiver_id="
                 + stationID
                 + " AND week="
                 + getGameWeek(con, gameID));
     if (rs.next()) {
       int amount = rs.getInt("amount");
       stmt.executeUpdate(
           "UPDATE stations SET inventory=inventory+" + amount + " WHERE station_id=" + stationID);
     }
     setNextStationAction(con, stationID, ACTION_ACCEPT_NEXT_ORDER);
     con.commit();
     con.close();
   } catch (SQLException e) {
     try {
       con.rollback();
       con.close();
     } catch (SQLException e1) {
       e1.printStackTrace();
     }
     e.printStackTrace();
   }
 }
示例#8
0
 private void deliverBeer(int userID, int gameID) {
   Connection con = DatabaseConnector.getConnection();
   Statement stmt;
   ResultSet rs;
   try {
     stmt = con.createStatement();
     int stationID = 0, inventory = 0, backorder = 0;
     rs =
         stmt.executeQuery(
             "SELECT station_id,inventory,backorder FROM stations WHERE game_id="
                 + gameID
                 + " AND user_id="
                 + userID);
     if (rs.next()) {
       stationID = rs.getInt("station_id");
       inventory = rs.getInt("inventory");
       backorder = rs.getInt("backorder");
     }
     // Gucken wieviel geliefert werden kann und soviel liefern wie möglich
     if (inventory >= backorder) {
       stmt.executeUpdate(
           "INSERT INTO deliveries(receiver_id,amount,week) VALUES("
               + getCustomerID(con, stationID)
               + ","
               + backorder
               + ","
               + (getGameWeek(con, gameID) + 2)
               + ")");
       stmt.executeUpdate(
           "UPDATE stations SET inventory=inventory-backorder,backorder=0 WHERE station_id="
               + stationID);
     } else {
       stmt.executeUpdate(
           "INSERT INTO deliveries(receiver_id,amount,week) VALUES("
               + getCustomerID(con, stationID)
               + ","
               + inventory
               + ","
               + (getGameWeek(con, gameID) + 2)
               + ")");
       stmt.executeUpdate(
           "UPDATE stations SET inventory=0,backorder=backorder-inventory WHERE station_id="
               + stationID);
     }
     if (getStationType(con, stationID) == 4)
       setNextStationAction(con, stationID, ACTION_BREW_BEER);
     else setNextStationAction(con, stationID, ACTION_ORDER_BEER);
     con.commit();
     con.close();
   } catch (SQLException e) {
     try {
       con.rollback();
       con.close();
     } catch (SQLException e1) {
       e1.printStackTrace();
     }
     e.printStackTrace();
   }
 }