Hi

I have two tables Parent and Child

PARENT CHILD
--------- --------
Id ChildID
Name Name
Parent_ID

I have a mapping file name person.hbm.xml which has mapping info
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name ="Parent" table="PARENT" >
<id name="id" column ="ID" >
<generator class="increment"/>
</id>
<property name = "name" />
<set name = "children" inverse="true" >
<key column="parent_id" />
<one-to-many class ="Child"/>
</set>
</class>

<class name ="Child" table="CHILD" >
<id name="id" column ="ID" >
<generator class="increment"/>
</id>
<property name ="name" />
<many-to-one name="parent" class="Parent" column="parent_id" cascade="all" />
</class>
</hibernate-mapping>

I have my own util class for loadning session info . I created one Person Manager.java file for my data population

Session session = HibernateUtil.currentSession();
Transaction tx = session.beginTransaction();
Parent p = new Parent();
Child c = new Child();
p.addChild(c);
session.save(c);
tx.commit();

I have my concern in saving child record into session . If i change this to session.save(p) , data is inserted only in to Parent table . i hope this behaviour is because of having inverse tag in SET . ?

what changes in need to make in such a way if i want to do session.save(p) that will insert records into Parent as well as Child

thanks
balaji

irst u have use parent .setchaid(set) then,
after that u have to say session.save(parent)

for further help visit
http://www.systemmobile.com/articles/In ... te%20Works

even if i set parent.getChildren.add(c) i'm facing the same problem .

in my mapping file i give cascade = all entry in both relation .
<set name = "children" inverse="true" cascade="all">
<key column="parent_id" not-null="true" />
<one-to-many class ="Child"/>
</set>

<many-to-one name="parent" class="Parent" column="parent_id" cascade="all"/>

but still i needs session.save(c). if i skip this ,all data are not getting inserted .

can anyone throw some light on cascade tag .

Thanks
Balaji

i have seen your code,
i have sended you one link u have refered the link,

http://www.systemmobile.com/articles/In ... 0Documents

in that he has given , good example which suited your need,
ok any how,

i have seen your code, u r adding the children one by one, first u have to add set of children to your parent, not one chidren, because, one entity, in the parent table have many entities in the chidren table, any how refer the link, all the best,
actually i also taking taining in hybernate,

good luck,

Regards
kiran kumar

Usually you want to set cascade from parent to child, not the other way around. So, add a cascade in the <one-to-many> tag in parent mapping file, and remove it from child's, will allow you to save a parent and automatically save a child. If you only update child, say change it's name, you just call save(c) parent will not (and should not) be impacted.

The inserve='true' is just preventing updating the fk in child table twice, not related to the cascade.

HTh.