コード例 #1
0
  // Reserve an item.
  @Override
  public boolean reserveCustomer(int id, int customerId, String key, String location, int price) {
    synchronized (syncLock) {
      Customer cust = (Customer) readData(id, Customer.getKey(customerId));
      if (cust == null) {
        Trace.warn(
            "RM::reserveItem("
                + id
                + ", "
                + customerId
                + ", "
                + key
                + ", "
                + location
                + ") failed: customer doesn't exist.");
        return false;
      } else {
        // Do reservation.
        cust.reserve(key, location, price);
        writeData(id, cust.getKey(), cust);

        Trace.warn(
            "RM::reserveItem(" + id + ", " + customerId + ", " + key + ", " + location + ") OK.");
        return true;
      }
    }
  }
コード例 #2
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;
    }
  }