I have 2 entities viz. Item and Bid. I have a bidirectional association.
i.e.
one-to-many association From Item to Bid.
many-to-one association from Bid to Item.

The following is the part of Item.hbm.xml :

<!-- Item - Bid Association - One-to-Many -->
<set name="bids" inverse="true" cascade="save-update">
<key column="ITEM_ID" ></key>
<one-to-many class="Bid"/>
</set>

Now when i say session.save(item) -> it works...
but when i add aBid to item using item.addBid(aBid); //addBid is just a
//convenient method
this is not making aBid persistent. (not inserting a row in BID table)


code:

// Convenient Method

public void addBid(Bid bid)
{
this.getBids().add(bid);
bid.setItem(this);
}