Question

I’m trying to build a OneToMany association between the conversation entity and the sms entity.

I want the foreign key to be on the conversation table.

Table_Conversation

- id BIGINT
- sms_id BIGINT FK REFERENCES SmsBean.id

Here is the Conversation class

public class Conversation{
  //...
  @OneToMany(targetEntity=SmsBean.class, table="conversation")
  public List getSmsList() {
    return smsList;
  }
}

Note that, I don’t want conversation field in the Sms class as I don’t need it.

Hibernate is not able to generate my tables and throws the following exception:

org.hibernate.cfg.NotYetImplementedException: Collections having FK in secondary table

I’m using Hibernate 3.5 / JPA2.0

Can you help figure out how to do this.

Thanks

Answer 1

This question which is mine, is incorrect.

I want the foreign key to be on the conversation table.

Table_Conversation

- id BIGINT
- sms_id BIGINT FK REFERENCES SmsBean.id

But what would happen when the same conversation(id=123) has two sms? This will lead to two rows with the same id.

Table_Conversation

|--------------|
| id  | sms_id |
|--------------|
| 123 |  1001  |
| 123 |  1002  |
|--------------|

So I abandoned this idea and now I’m using a join table as this the hibernate recommended way.