Hibernate-Mapping Non Foreign Key in List/Bag

In Hibernate when you want to have a collection representing one-to-many relationship by default Hibernate maps primary key-foreign key mapping for the collection.
In case you want to map an non-foreign key field you could do it by using 'property-ref' attribute of <key> element.

Example:

<class name="com.sample.Item" table="ITEM"
        dynamic-update="false" dynamic-insert="false" select-before-update="false">

        <id name="id" type="int" column="ID">
            <generator class="native">
            </generator>
        </id>
         <property name="itemId"  >
            <column name="ITEM_ID" />
        </property>
        <property name="name"  >
            <column name="NAME" />
        </property>
       <bag name="bidList" lazy="false" order-by="BID_ID" >
            <key column = "BID_ID" property-ref="bidId"></key>
            <one-to-many class="com.example.Bid"/>
      </bag>
</class>

public class Item implements Serializable{
     private static final long serialVersionUID = 8991813750127304998L;

     private int id;
     private int itemId;
     private String name;
     private Collection<Bid> bidList = new ArrayList<Bid>();
  
     public void setId(int id){
           this.id = id;

    }
    public String getId(){
           return id;

    }
    public int getItemId() {
        return itemId;
    }
    public void setItemId(int itemId) {
        this.itemId = itemId;
    }

    public void setName(String name){
           this.name = name;
    }
    public String getName(){
           return name;

    }
    public Collection<Bid> getBidList() {
            return bidList;
    }
    public void setBidList(Collection<Bid> bidList) {
        this.bidList = bidList;
    }
}

public class Bid implements Serializable {

    private static final long serialVersionUID = 7991813750127304558L;
   
    private int id;
    private int bidId;
   
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public int getBidId() {
        return bidId;
    }
    public void setBidId(int bidId) {
        this.bidId = bidId;
    }
}