Hi We have developed program using Joined Subclass feature of hibernate.

First Class:
--------------------------
class Person{
String id; // this is primary key
String name;

get & set methods for both the properties

}

Second class:
---------------------------
class Order extends Person{

String orderid, // this is primary key or Unique key
String ordername;
get & set methods for both the properties
}

Maping file:
----------------------------------------------------------------
<hibernate-mapping default-lazy="false" auto-import="false">
<class name="Person" dynamic-update="false" dynamic-insert="false">
<id name="id" type="String" column="Person_ID">
// Assigned key
</id>
<property name="name" type="string" />

<joined-subclass name="Order" table="Order" dynamic-update="false" dynamic-insert="false">
<key column="Order_ID"/>
<property name="orderid" type="string" not-null="true"/>
<property name="ordername" type="string"/>
</joined-subclass>

</class>
</hibernate-mapping>
-------------------------------------------------------------------------

My intention is :
1) First I inserted a record in a Person with his details, it is sucessfully inserted in DB.

2) When I am trying to insert the data for Order I am getting an error ( JDBC batch operation), I am setting the values for the following fileds

1. id=1 // inherited from parent class
2. Orderid=1;
3. Ordername="myorder";

Can you please suggest what is the wrong in this and solution for the same.

We are in middle of the project, your help is more appreciated.

Regards,
Srinivas

Make sure that you have no duplicate record in Person table where id = 1.

When trying to insert a record into a subclass table, hibernate will also insert a record in the Person table. So make sure you have no duplicate.

Kind regards and thank you for rating.
Roy

Hi,

deployed small application in Jboss and Using

HibernateServiceMBean , but the hibernate is not creating database schema

can help , which attribute we have to specify in hibernate-service.xml file

Thanks