/*
* Copyright (c) 2008-2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.webtide.demo.auction.dao;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.CopyOnWriteArrayList;
import org.webtide.demo.auction.Bid;
public class AuctionDao
{
final static ConcurrentMap<Integer, List<Bid>> _bids = new ConcurrentHashMap<Integer, List<Bid>>();
public List<Bid> getAllBids(Integer itemId)
{
return _bids.get(itemId);
}
public void saveAuctionBid(Bid bid)
{
List<Bid> bids = _bids.get(bid.getItemId());
if (bids == null)
{
bids = new CopyOnWriteArrayList<Bid>();
List<Bid> tmp = _bids.putIfAbsent(bid.getItemId(),bids);
bids = tmp == null?bids:tmp;
}
bids.add(bid.clone());
}
public Bid getHighestBid(Integer itemId)
{
List<Bid> bids = _bids.get(itemId);
if (bids == null)
return null;
Bid highest = null;
for (Bid bid : bids)
{
if (highest == null || bid.getAmount() > highest.getAmount())
highest = bid;
}
return highest.clone();
}
}