Hi i'm having a problem updating an object inside a Map...

Parent Table
PARENT_ID <--Primary Key
ParentName varchar(20)

OneToMany Table
ID <-- Primary Key
AttributeA varchar(20)
AttributeB varchar(20)
PARENT_ID <--Foreign Key

The mapping for the Parent.java is as follows

.
.
.
<map name="oneToMany" inverse="true" lazy="true" cascade="all-delete-orphan">
<key column="PARENT_ID" />
<index column="ID" type="java.lang.Integer"/>
<one-to-many class="OneToMany"/>
</map>

For the OneToMany.java
<many-to-one name="personalInfo" column="PERSONALINFO_ID" not-null="true"/>

There is no problem inserting to the Parent table and even inserting data int the OneToMany Table...

The problem is how do I update.

Example my collection of one to may may have 5 objects.
how do I update object 3?

I tried doing this...
this.oneToMany = (OneToMany)parent.getOneToMany().get(new Integer(pi.getId()) );

then update the values of the oneToMany... however, I realized that the parent table Id that i used to find the Map object is only applicable for one-to-one or a Set with only one object inside.

Need help please...

Hibernate version: 3

Mapping documents:

Code between sessionFactory.openSession() and session.close():

Name and version of the database you are using: MySQL 4.0

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt: