Relationship between Bid and User

[Sandeep Vaid]

In The book "Hibernate In Action"
In the code provided :
Bid.java

class Bid 
{
  private User bidder;
}

User.java

class User
{
}

so this means that this is unidirectional relationship from Bid to User (many to one) as we are interested in [a particular bid is place by which user] and not in [a particular user places which all bids]..


Moreover In Item.java, in placeBid() method ...

  // Create new Bid
        Bid newBid = new Bid(bidAmount, this, bidder);
 
        // Place bid for this Item
        this.addBid(newBid);
 

The constructor of Bid is provided as :

public Bid(double amount, Item item, User bidder) {
this.amount = amount;
this.item = item;
this.bidder = bidder;
}

Why Not in this constructor itself, we add item.addBid(this); ? so it will be more logical...



[ August 31, 2007: Message edited by: Sandeep Vaid ]
[ August 31, 2007: Message edited by: Sandeep Vaid ]

[Mark Spritzler]

Not sure it really makes any difference. 6 of one half dozen of the other. Just as long at the object relationship that is wanted is done.

As far as which is more logical, I don't think either is more than the other, but that is just my opinion.

Mark