Hi Bob

Ok then, Yes. :-)

http://www.hibernate.org/hib_docs/annotations/reference/en/html_single/

I've got the same scenario in my app.

 

Example Request model:

@Entity 

public class Request {

    

      private List<PersonRequest> personRequests;

      ......

    

      @OneToMany(mappedBy="request")

      @OrderBy("date")

      public List<PersonRequest> getPersonRequests () {

            return personRequests;

      }

      .....

}

 

Example Person model:

@Entity

public class Person {

      private List<PersonRequest> personRequests;

      ......

    

      @OneToMany(mappedBy="person")

      @OrderBy("date")

      public List<PersonRequest> getPersonRequests () {

            return personRequests;

      }

      .....

}

 

Example PersonRequest model:

@Entity

public class PersonRequest:

      private Person person;

      private Request request;

      .....

      @ManyToOne

      @JoinColumn(name="person_id")

      public Person getPerson(){

            return person;

      }

 

      @ManyToOne

      @JoinColumn(name="request_id")

      public Request getRequest(){

            return request;

      }

      .......

}

 

You may want to add details about cascading and the like.

You'll obviously need to put annotations on your getId method's so hibernate
know to use the id fields as primary keys.

Just add in the other fields such as description as normal.

Hope this helps.  

 

Cheers

Aled

      

 

-----Original Message-----
From: syg6 [mailto:[EMAIL PROTECTED] 
Sent: 09 July 2007 12:18
To: [email protected]
Subject: [appfuse-user] many-to-many with attribute ... again

 

 

Hello all.

 

I had this problem about a year ago and just couldn't get Hibernate and

XDoclet to play nice. Basically I have this:

 

Request

id

description

 

Person

id

name

 

PersonRequest

idPerson

idRequest

date 

 

And I would like to know how to do with Annotations. The last time I wound

up hand-hacking the hibernate mapping files and creating two intermediate

'composite' classes -- let's call them PersonRequest and PersonRequestPK -- 

and having to do all of the DAO by hand.

 

Is there any way to do this auto-magically with Annotations?

 

Please say yes ...

 

Cheers,

Bob

-- 

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