Equivalent of @GeneratedValue in JBoss-4.0.5.GA

[rajesh.r77]

Hi,
I am working on an application through which messages can be send to JMS Topic from browser and the MessageBean will store the received messages to a table called newsentity in postgresql database. The Entity Class name is NewsEntity. My application server is JBoss-4.0.5.GA and version is J2EE 1.4.

The table newsentity contains 3 fields - id, title and body. The id field is the PK and it's type is BIGSERIAL.
Since the id field will auto increment, I did not set any value to the id field while sending message to MessageBean.

 InitialContext ctx = new InitialContext();
 topic = (Topic) ctx.lookup("topic/mdb");
 TopicConnectionFactory factory =
 (TopicConnectionFactory) ctx.lookup("ConnectionFactory");
 connection = factory.createTopicConnection();
 session = connection.createTopicSession(false,
 TopicSession.AUTO_ACKNOWLEDGE);
 messageProducer = session.createProducer(topic);

 ObjectMessage message = session.createObjectMessage();
 // here we create a NewsEntity, that will be sent in JMS message

 NewsEntity e = new NewsEntity();

 e.setTitle(title);
 e.setBody(body);

 message.setObject(e);
 messageProducer.send(message);
 messageProducer.close();
 connection.close();
 response.sendRedirect("ListNews");

But when I post message, I get the error 'Internal Exception: org.postgresql.util.PSQLException: ERROR: null value in column "id" violates not-null constraint. Call: INSERT INTO NEWSENTITY (ID, TITLE, BODY) VALUES (?, ?, ?)'

I assume this problem occured because I could not provide the annotation @GeneratedValue as GenerationType.AUTO in NewsEntity Class since the J2EE version is 1.4. Most of the annotation types are not supported in 1.4.

package ejb;

import java.io.Serializable;
import javax.persistence.Entity;
//import javax.persistence.GeneratedValue;
 //import javax.persistence.GenerationType;
 import javax.persistence.Id;
//import javax.persistence.Table;

@Entity
//@Table(name="NewsEntity", schema="public", catalog="postgres")
public class NewsEntity implements Serializable {
 private static final long serialVersionUID = 1L;
 @Id
 //@GeneratedValue(strategy = GenerationType.AUTO)

 private Long id;
 private String title;
 private String body;

If I remove the comment of the lines in Bold, I will get error - Unknown class while building the application.

Can any one provide me the way to define that the id field in NewsEntity class will be auto-generated? If I can do so then I need to pass value to id field while posting data to JMS topic. Thank you for your kind attention.

Regards
Rajesh