I have a parent class(CONTRACT) which has one to many relation with the child class(SPLIT).
In the parent .hbm.xml i have defined the following relationship...

<bag name="_splitsList" cascade="all">
<key column="CONTRACT_ID"/>
<one-to-many class="com.bunge.bgm.contract.business.domain.trade.Split"/>
</bag>

and in the child class i ahve defined


<id name="_id" column="SPLIT_ID" type="integer" unsaved-value="any">
<generator class="sequence">
<param name="sequence">T_SPLIT_SEQUENCE</param>
</generator>
</id>
<many-to-one name="_contract" column="CONTRACT_ID" not-null="true"/>

Now when i am trying to insert the data. Everything works proper. Data is inserted into the Parent as well as the child tables.
However when i try to update the parent by calling update(parent object) ...which in turn should update the child(ren)...whats happening is the parent is updated, but new records are inserted into the child table. Any ideas why?

Thanx & Regards.

Thats what unsaved-value="any" does.

I tried putting unsaved-value="null". But then this was creating a problem during creation and child records(SPLITS) were not being inserted into the child tables

Perhaps you need unsaved-value="0", or something. Have you read the documentation??