コード例 #1
0
  /**
   * Place a bid on the specified item identifier
   *
   * @param id item identifier
   * @param bid Bid object to represent the bid
   * @throws AuctionNotFoundException when bid does not exists
   * @throws BidInvalidException when the bid is lower than the previous one
   * @throws RemoteException on RMI error
   */
  public void placeBid(int id, Bid bid)
      throws AuctionNotFoundException, BidInvalidException, RemoteException {

    logger.info("Placing a new bid for item %d", id);

    AuctionItem item = auctions.get(id);

    if (item == null) {
      logger.warning("Auction %d does not exists", id);
      throw new AuctionNotFoundException();
    }

    synchronized (item) {
      if (!item.isOpen()) {
        logger.warning("Attempt to place a bid on the closed item %d", id);
        throw new BidInvalidException("Auction is closed for this item");
      }

      if (item.getHighestBid() != null && bid.getValue() <= item.getHighestBid().getValue()) {
        logger.info("Bid too low on item %d", id);
        throw new BidInvalidException("Amount is too low");
      }

      item.addBid(bid);
    }
  }
コード例 #2
0
  /**
   * Create a new auction with the specified informations
   *
   * @param itemName Long name of the item
   * @param minValue minimum value of the item required
   * @param endTime End of the auction for the specified item
   * @param owner AuctionClient associated to this bid used for callback
   * @return the bid Identifier
   * @throws RemoteException on RMI error
   */
  public int createAuction(String itemName, double minValue, Date endTime, IAuctionClient owner)
      throws RemoteException {

    int auctionId = auctions.getUniqueId();
    AuctionItem item = new AuctionItem(auctionId, itemName, minValue, endTime, owner);

    // make sure that nothing happens to the item before it has been
    // added to the auction collection and to the cleaner
    synchronized (item) {
      auctions.add(auctionId, item);
      cleaner.add(item);
    }

    logger.info("Creating auction %d", auctionId);

    return auctionId;
  }