Re: problem with n:m collection

[Mart�n Capriotti APTIX]

It worked out setting the collection-class to ManageableVector


Thank you all.


----- Original Message ----- 
From: "sclark" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 25, 2003 12:08 PM
Subject: Re: problem with n:m collection


> This is because the default behavior was recently changed; collections now
use
> RemovalAwareCollection by default, which has the effect of deleting the
> contained object as well as the relationship.  The fix is to specify a
different
> ManageableCollection implementation in the collection-class attribute of
your
> collection-descriptor.
>
> Because this surprising and fundamental change in behavior has been made
at such
> a late date (RC3 or 4?), it seems that it should be noted in the release
notes
> and perhaps added to the FAQ.
>
> -steve
>
> Steve Clark
> Technology Applications Team
> Natural Resources Research Center/USGS
> [EMAIL PROTECTED]
> (970)226-9291


----- Original Message ----- 
From: "R�da Benzair" <[EMAIL PROTECTED]>
To: "'OJB Users List'" <[EMAIL PROTECTED]>
Sent: Thursday, September 25, 2003 12:34 PM
Subject: RE: problem with n:m collection


> Hi
> can be it is a solution with you to see
> Add in Class-descriptor
> collection-class="org.apache.ojb.broker.util.collections.ManageableVecto
> r"
>
>
> -----Original Message-----
> From: Mart�n Capriotti APTIX [mailto:[EMAIL PROTECTED]
> Sent: jeudi 25 septembre 2003 17:02
> To: [EMAIL PROTECTED]
> Subject: problem with n:m collection
>
> Hi
> I have problems with n:m mappings, it is deleting the referenced objets
> instead of deleting only the reference (when I delete it from the
> collection)
> (behaving as if  auto-delete="true" is set)
>
>
> Example:
> one way n:m direct mapping from Roles to Usuario (nothing mapped from
> Usuario to Rol)
>
> -------------------- MAPPING OF COLLECTION usuarios IN CLASS Rol
> ----------------------------------
> <class-descriptor ... Rol...>
> ...
> <collection-descriptor
>  name="usuarios"
>  element-class-ref="net.aptix.intranet.seguridad.Usuario"
>  indirection-table="ROLES_USR" >
>    <fk-pointing-to-this-class column="ID_ROL"/>
>    <fk-pointing-to-element-class column="ID_USR"/>
>
> </collection-descriptor>
>
> -------------class Rol----------------------
>
>
> .....
>
> public Collection usuarios = new Vector();
>
> .....
>
> public Collection getUsuarios() {
>
> return usuarios;
>
> }
>
> public void setUsuarios(Collection _usuarios){
>
> this.usuarios=_usuarios;
>
> }
>
> -----------------------------------
>
> This example should remove one Usuario (id=5) from a Rol (id=10):
>
> Rol r=Rol.getRolById(10);
>
> Usuario u= Usuario.getUsuariobyId(5);
>
> r.getUsuarios.remove(u);
>
> store...
>
> ----------------------------------------------------------------------
>
> It does the work.. and more: It removes Usuario "u" from the collection
> as it should, but it also removes that object Usuario (id=5) from DB, as
> if  auto-delete="true" has been set!
>
> It seems this problem started when we moved from OJB 0.97 to 1RC4
>
> Thanks , Mart�n.
>
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>


---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]