コード例 #1
1
ファイル: FlightRM.java プロジェクト: sameerjagdale/dsPart2
 public int newCustomer(int id) throws RemoteException {
   Trace.info("INFO: RM::newCustomer(" + id + ") called");
   // Generate a globally unique ID for the new customer
   int cid =
       Integer.parseInt(
           String.valueOf(id)
               + String.valueOf(Calendar.getInstance().get(Calendar.MILLISECOND))
               + String.valueOf(Math.round(Math.random() * 100 + 1)));
   Customer cust = new Customer(cid);
   writeData(id, cust.getKey(), cust);
   Customer temp = cust.clone();
   temp.setID(-1);
   temp.setType(1);
   writeDataToLog(id, cust.getKey(), temp);
   Trace.info("RM::newCustomer(" + cid + ") returns ID=" + cid);
   return cid;
 }
コード例 #2
0
ファイル: FlightRM.java プロジェクト: sameerjagdale/dsPart2
  // deletes the entire item
  protected boolean deleteItem(int id, String key) {
    Trace.info("RM::deleteItem(" + id + ", " + key + ") called");
    ReservableItem curObj = (ReservableItem) readData(id, key);
    Flight tempItem =
        new Flight(Integer.parseInt(curObj.getLocation()), curObj.getCount(), curObj.getPrice());
    tempItem.setReserved(curObj.getReserved());
    // Check if there is such an item in the storage
    if (curObj == null) {
      Trace.warn("RM::deleteItem(" + id + ", " + key + ") failed--item doesn't exist");
      return false;
    } else {
      if (curObj.getReserved() == 0) {

        tempItem.setType(0);
        writeDataToLog(id, curObj.getKey(), tempItem);
        removeData(id, curObj.getKey());
        Trace.info("RM::deleteItem(" + id + ", " + key + ") item deleted");
        return true;
      } else {
        Trace.info(
            "RM::deleteItem("
                + id
                + ", "
                + key
                + ") item can't be deleted because some customers reserved it");
        return false;
      }
    } // if
  }
コード例 #3
0
ファイル: FlightRM.java プロジェクト: sameerjagdale/dsPart2
  // Deletes customer from the database.
  public boolean deleteCustomer(int id, int customerID) throws RemoteException {
    Trace.info("RM::deleteCustomer(" + id + ", " + customerID + ") called");
    Customer cust = (Customer) readData(id, Customer.getKey(customerID));

    if (cust == null) {
      Trace.warn(
          "RM::deleteCustomer(" + id + ", " + customerID + ") failed--customer doesn't exist");
      return false;
    } else {
      Customer temp = cust.clone();
      // Increase the reserved numbers of all reservable items which the customer reserved.
      RMHashtable reservationHT = cust.getReservations();
      for (Enumeration e = reservationHT.keys(); e.hasMoreElements(); ) {
        String reservedkey = (String) (e.nextElement());
        ReservedItem reserveditem = cust.getReservedItem(reservedkey);
        Trace.info(
            "RM::deleteCustomer("
                + id
                + ", "
                + customerID
                + ") has reserved "
                + reserveditem.getKey()
                + " "
                + reserveditem.getCount()
                + " times");
        ReservableItem item = (ReservableItem) readData(id, reserveditem.getKey());
        Trace.info(
            "RM::deleteCustomer("
                + id
                + ", "
                + customerID
                + ") has reserved "
                + reserveditem.getKey()
                + "which is reserved"
                + item.getReserved()
                + " times and is still available "
                + item.getCount()
                + " times");
        Flight tempItem =
            new Flight(Integer.parseInt(item.getLocation()), item.getCount(), item.getPrice());
        tempItem.setReserved(item.getReserved());
        tempItem.setType(0);
        item.setReserved(item.getReserved() - reserveditem.getCount());
        item.setCount(item.getCount() + reserveditem.getCount());
        if (readDataFromLog(id, item.getKey(), id) == null)
          writeDataToLog(id, item.getKey(), tempItem);
      }

      // remove the customer from the storage
      temp.setType(1);
      if (readDataFromLog(id, cust.getKey(), id) == null) writeDataToLog(id, cust.getKey(), temp);
      removeData(id, cust.getKey());

      Trace.info("RM::deleteCustomer(" + id + ", " + customerID + ") succeeded");
      return true;
    } // if
  }
コード例 #4
0
ファイル: FlightRM.java プロジェクト: sameerjagdale/dsPart2
  // Create a new flight, or add seats to existing flight
  //  NOTE: if flightPrice <= 0 and the flight already exists, it maintains its current price
  public boolean addFlight(int id, int flightNum, int flightSeats, int flightPrice)
      throws RemoteException, InvalidTransactionException, TransactionAbortedException {
    Trace.info(
        "RM::addFlight("
            + id
            + ", "
            + flightNum
            + ", $"
            + flightPrice
            + ", "
            + flightSeats
            + ") called");
    Flight curObj = (Flight) readData(id, Flight.getKey(flightNum));
    if (curObj == null) {
      // doesn't exist...add it
      Flight newObj = new Flight(flightNum, flightSeats, flightPrice);

      writeData(id, newObj.getKey(), newObj);
      String key = newObj.getKey();
      if (readDataFromLog(id, key, id) == null) {
        Flight logObj = (Flight) newObj.clone();
        logObj.setCount(-1);
        logObj.type = 0;
        writeDataToLog(id, key, logObj);
      }
      Trace.info(
          "RM::addFlight("
              + id
              + ") created new flight "
              + flightNum
              + ", seats="
              + flightSeats
              + ", price=$"
              + flightPrice);
    } else {
      // add seats to existing flight and update the price...
      Flight logObj = (Flight) curObj.clone();
      if (readDataFromLog(id, curObj.getKey(), id) == null)
        writeDataToLog(id, curObj.getKey(), logObj);

      curObj.setCount(curObj.getCount() + flightSeats);
      if (flightPrice > 0) {
        curObj.setPrice(flightPrice);
      } // if
      writeData(id, curObj.getKey(), curObj);
      Trace.info(
          "RM::addFlight("
              + id
              + ") modified existing flight "
              + flightNum
              + ", seats="
              + curObj.getCount()
              + ", price=$"
              + flightPrice);
    } // else
    return (true);
  }
コード例 #5
0
ファイル: FlightRM.java プロジェクト: sameerjagdale/dsPart2
 // query the price of an item
 protected int queryPrice(int id, String key) {
   Trace.info("RM::queryCarsPrice(" + id + ", " + key + ") called");
   ReservableItem curObj = (ReservableItem) readData(id, key);
   int value = 0;
   if (curObj != null) {
     value = curObj.getPrice();
   } // else
   Trace.info("RM::queryCarsPrice(" + id + ", " + key + ") returns cost=$" + value);
   return value;
 }
コード例 #6
0
ファイル: FlightRM.java プロジェクト: sameerjagdale/dsPart2
 // return a bill
 public String queryCustomerInfo(int id, int customerID) throws RemoteException {
   Trace.info("RM::queryCustomerInfo(" + id + ", " + customerID + ") called");
   Customer cust = (Customer) readData(id, Customer.getKey(customerID));
   if (cust == null) {
     Trace.warn(
         "RM::queryCustomerInfo(" + id + ", " + customerID + ") failed--customer doesn't exist");
     return ""; // NOTE: don't change this--WC counts on this value indicating a customer does not
                // exist...
   } else {
     String s = cust.printBill();
     Trace.info("RM::queryCustomerInfo(" + id + ", " + customerID + "), bill follows...");
     System.out.println(s);
     return s;
   } // if
 }
コード例 #7
0
ファイル: FlightRM.java プロジェクト: sameerjagdale/dsPart2
 // Returns data structure containing customer reservation info. Returns null if the
 //  customer doesn't exist. Returns empty RMHashtable if customer exists but has no
 //  reservations.
 public RMHashtable getCustomerReservations(int id, int customerID) throws RemoteException {
   Trace.info("RM::getCustomerReservations(" + id + ", " + customerID + ") called");
   Customer cust = (Customer) readData(id, Customer.getKey(customerID));
   if (cust == null) {
     Trace.warn(
         "RM::getCustomerReservations failed("
             + id
             + ", "
             + customerID
             + ") failed--customer doesn't exist");
     return null;
   } else {
     return cust.getReservations();
   } // if
 }
コード例 #8
0
ファイル: FlightRM.java プロジェクト: sameerjagdale/dsPart2
 // I opted to pass in customerID instead. This makes testing easier
 public boolean newCustomer(int id, int customerID) throws RemoteException {
   Trace.info("INFO: RM::newCustomer(" + id + ", " + customerID + ") called");
   Customer cust = (Customer) readData(id, Customer.getKey(customerID));
   if (cust == null) {
     cust = new Customer(customerID);
     writeData(id, cust.getKey(), cust);
     Customer temp = cust.clone();
     temp.setType(1);
     temp.setID(-1);
     writeDataToLog(id, cust.getKey(), temp);
     Trace.info("INFO: RM::newCustomer(" + id + ", " + customerID + ") created a new customer");
     return true;
   } else {
     Trace.info(
         "INFO: RM::newCustomer(" + id + ", " + customerID + ") failed--customer already exists");
     return false;
   } // else
 }
コード例 #9
0
ファイル: FlightRM.java プロジェクト: sameerjagdale/dsPart2
  // reserve an item
  protected boolean reserveItem(int id, int customerID, String key, String location) {
    Trace.info(
        "RM::reserveItem( "
            + id
            + ", customer="
            + customerID
            + ", "
            + key
            + ", "
            + location
            + " ) called");
    // Read customer object if it exists (and read lock it)
    Customer cust = (Customer) readData(id, Customer.getKey(customerID));
    if (cust == null) {
      Trace.warn(
          "RM::reserveCar( "
              + id
              + ", "
              + customerID
              + ", "
              + key
              + ", "
              + location
              + ")  failed--customer doesn't exist");
      return false;
    }

    // check if the item is available
    ReservableItem item = (ReservableItem) readData(id, key);

    if (item == null) {
      Trace.warn(
          "RM::reserveItem( "
              + id
              + ", "
              + customerID
              + ", "
              + key
              + ", "
              + location
              + ") failed--item doesn't exist");
      return false;
    } else if (item.getCount() == 0) {
      Trace.warn(
          "RM::reserveItem( "
              + id
              + ", "
              + customerID
              + ", "
              + key
              + ", "
              + location
              + ") failed--No more items");
      return false;
    } else {
      Flight tempItem =
          new Flight(Integer.parseInt(item.getLocation()), item.getCount(), item.getPrice());
      tempItem.setReserved(item.getReserved());
      Customer temp = cust.clone();
      temp.setType(1);
      if (readDataFromLog(id, cust.getKey(), id) == null) {
        writeDataToLog(id, cust.getKey(), temp);
      }
      cust.reserve(key, location, item.getPrice());

      writeData(id, cust.getKey(), cust);

      // decrease the number of available items in the storage
      item.setCount(item.getCount() - 1);
      item.setReserved(item.getReserved() + 1);

      if (readDataFromLog(id, item.getKey(), id) == null) {
        tempItem.setType(0);
        writeDataToLog(id, item.getKey(), tempItem);
      }
      Trace.info(
          "RM::reserveItem( "
              + id
              + ", "
              + customerID
              + ", "
              + key
              + ", "
              + location
              + ") succeeded");
      return true;
    }
  }