package ejava.examples.asyncmarket.bo;
   
   import java.io.Serializable;
   import java.util.List;
   import java.util.ArrayList;
   import java.util.Date;
   
   import javax.persistence.*;
   
  @NamedQueries({
      @NamedQuery(name="AsyncMarket_getAuctionItems",
              query="select ai from AuctionItem ai"),
      @NamedQuery(name="AsyncMarket_getAvailableAuctionItems",
              query="select ai from AuctionItem ai " +
                      "where ai.closed = false")
  })
  @Entity @Table(name="ASYNCMARKET_AUCTIONITEM")
  public class AuctionItem implements Serializable {
      private static final long serialVersionUID = 1L;
      
      @Id @GeneratedValue(strategy=GenerationType.IDENTITY)
      private long id;
      
      @Version
      private long version;
      
      @Column(length=32)
      private String name;
      @Column(length=32)
      private String productId;
      
      @Temporal(TemporalType.TIMESTAMP)
      private Date startDate;
      
      @Temporal(TemporalType.TIMESTAMP)
      private Date endDate;
      
      private double minBid;
      
      @ManyToOne(optional=false, fetch=FetchType.LAZY)
      private Person owner;
      
      @OneToMany(mappedBy="item",
                 fetch=FetchType.LAZY,
                 cascade= {CascadeType.PERSIST,
                           CascadeType.REMOVE})
      private List<Bid> bids = new ArrayList<Bid>();
      private boolean closed=false;
      
      @OneToOne(fetch=FetchType.EAGER)
      private Bid winningBid;
      
      public AuctionItem() {}
      public AuctionItem(long id) { setId(id); }
      
      public long getId() {
          return id;
      }
      private void setId(long id) {
          this.id = id;
      }
      
      public long getVersion() {
          return version;
      }
      public void setVersion(long version) {
          this.version = version;
      }
      
      public String getName() {
          return name;
      }
      public void setName(String name) {
          this.name = name;
      }
      
      public String getProductId() {
          return productId;
      }
      public void setProductId(String productId) {
          this.productId = productId;
      }
  
      public double getMinBid() {
          return minBid;
      }
      public void setMinBid(double minBid) {
          this.minBid = minBid;
      }
      
      public Date getEndDate() {
          return endDate;
      }
      public void setEndDate(Date endDate) {
          this.endDate = endDate;
      }
      
      public Date getStartDate() {
          return startDate;
     }
     public void setStartDate(Date startDate) {
         this.startDate = startDate;
     }
 
     public Person getOwner() {
         return owner;
     }
     public void setOwner(Person owner) {
         this.owner = owner;
     }
     
     public void closeBids() {
         closed=true;
         setWinningBid(getHighestBid());        
     }
     
     public void setClosed(boolean closed) {
         this.closed = closed;
     }
     public boolean isClosed() {
         return closed;
     }
     
     public List<Bid> getBids() {
         return bids;
     }
     public void setBids(List<Bid> bids) {        
         this.bids = bids;
     }
     
     public void addBid(Bid bid) throws IllegalArgumentException {
         Bid highest = getHighestBid();
         if (highest == null || bid.getAmount() > highest.getAmount()) {
             bids.add(bid);
         }
     }
     
     @Transient
     public Bid getHighestBid() {
         Bid highest = null;
         for (Bid b : bids) {
             if (highest == null || b.getAmount() > highest.getAmount()) {
                 highest = b;
             }
         }
         return highest;
     }
     
     public Bid getWinningBid() {
         return winningBid;
     }
     public void setWinningBid(Bid winningBid) {
         this.winningBid = winningBid;
     }
     
     public String toString() {
         StringBuilder text = new StringBuilder();
         text.append("id=" + id);
         text.append(", name=" + name);
         text.append(", version=" + version);
         text.append(", startDate=" + startDate);
         text.append(", endDate=" + endDate);
         text.append(", midBid=$" + minBid);
         text.append(", bids(" + bids.size() + ")={");
         for(Bid b : bids) {
             text.append(b.getBidder() + " $" + b.getAmount() + ",");
         }
         text.append("}");
         text.append(", closed=" + closed);
         text.append(", winning bid=" + (winningBid==null ? null :
             winningBid.getAmount() + " $" + winningBid.getAmount()));
         return text.toString();
     }
 }