Francois, Why does a unidirectional relation need the target-relation? I'm trying to understand what target-relation does.
On Wednesday 26 March 2003 03:37 pm, Francois Eric wrote: > Hi, > > In order to do this, you must get rid of the "target" attributes in your > @ejb.relation and put them in a @ejb.relation but on the other side. > Also you must put the @jboss.target-relation in your other bean. When > you use the "target" attributes and tags, you are trying to complete a > unidirectional cmr link. For bidirectional cmr links, I don't believe > you can use the foreign key mapping style. > > It should look something like this: > > /** > * @ejb.interface-method view-type="local" > * > * @ejb.relation > * name="Customer-Advertisement" > * role-name="Customer-has-many-Advertisements" > * > * @ejb.value-object > * > aggregate="ordermanager.advertisement.valueobjects.AdvertisementValue" > * aggregate-name="AdvertisementValue" > * > members="ordermanager.advertisement.ejb.AdvertisementLocal" > * members-name="AdvertisementValue" > * relation="external" > * type="Collection" > */ > public abstract Collection getAdvertisementLocals(); > > and for the other bean > > /** > * @ejb.relation name="Customer-Advertisement" > * role-name="Advertisement-belongs-to-Customer" > * cascade-delete="yes" > * > * @jboss.relation > * fk-column="customerNumber" > * related-pk-field="customerNumber" > * > * @ejb.interface-method view-type="local" > */ > public abstract CustomerLocal getCustomer(); > > /** > * @ejb.interface-method view-type="local" > */ > public abstract void setCustomer(CustomerLocal customer); > > Hope this helps, > > Francois > > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of > [EMAIL PROTECTED] > Sent: March 26, 2003 9:19 AM > To: [EMAIL PROTECTED] > Subject: [Xdoclet-user] help with relationships > > > Hi all, > > I have two (enitity bean) classes which relate as follows: > > > Customer-1----------------N->Advertisement > > > So, a customer can have N advertisements, an Advertisement only belongs > to > 1 customer. > (1:N relation). > > I have set up one side of the relation as follows: > > > [code] > /** > * @ejb.interface-method view-type="local" > * > * @ejb.relation > * name="Customer-Advertisement" > * role-name="Customer-has-many-Advertisements" > * target-cascade-delete="yes" > * target-ejb="Advertisement" > * target-role-name="Advertisement-belongs-to-Customer" > * target-multiple="no" > * @jboss.relation-mapping style="foreign-key" > * @jboss.target-relation > * fk-constraint="false" > * fk-column="customerNumber" > * related-pk-field="customerNumber" > * @ejb.value-object > * > aggregate="ordermanager.advertisement.valueobjects.AdvertisementValue" > * aggregate-name="AdvertisementValue" > * > members="ordermanager.advertisement.ejb.AdvertisementLocal" > * members-name="AdvertisementValue" > * relation="external" > * type="Collection" > */ > public abstract Collection getAdvertisementLocals(); > > /** > * @ejb.interface-method > */ > public abstract void setAdvertisementLocals(Collection > advertisements); > > [/code] > > > This code seems to work fine. But I guess my question is, what to put in > > the Advertisement class, to make the relation work both ways...? > > Many thanks, > > Harm de Laat > Informatiefabriek > The Netherlands > > > > ------------------------------------------------------- > This SF.net email is sponsored by: > The Definitive IT and Networking Event. Be There! > NetWorld+Interop Las Vegas 2003 -- Register today! > http://ads.sourceforge.net/cgi-bin/redirect.pl?keyn0001en > _______________________________________________ > xdoclet-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/xdoclet-user > > > ------------------------------------------------------- > This SF.net email is sponsored by: > The Definitive IT and Networking Event. Be There! > NetWorld+Interop Las Vegas 2003 -- Register today! > http://ads.sourceforge.net/cgi-bin/redirect.pl?keyn0001en > _______________________________________________ > xdoclet-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/xdoclet-user -- H. L. Mencken suffers from the hallucination that he is H. L. Mencken -- there is no cure for a disease of that magnitude. -- Maxwell Bodenheim ------------------------------------------------------- This SF.net email is sponsored by: The Definitive IT and Networking Event. Be There! NetWorld+Interop Las Vegas 2003 -- Register today! http://ads.sourceforge.net/cgi-bin/redirect.pl?keyn0001en _______________________________________________ xdoclet-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/xdoclet-user
