[jboss-user] [EJB 3.0 Users] - Re: unidirectional and bidirectional relationship

[amira88]

"Wolfgang Knauf" wrote : Hi,
  | 
  | assume that you have a relation "Person has many addresses" with two entities "Person" and "Address".
  | 
  | If you declare a bidirectional relationship, your code can navigate from Person to Address, and from Adress to Person.
  | 
  | With a unidirectional relationship, your code can navigate only from one side to the other. E.g. you can get the addresses of a person, but you cannot get the person of an address.
  | 
  | The database representation of the relationship is not affected by your unidirectional/bidirectional decision. This defines only, how the code side looks like.
  | 
  | Hope this helps
  | 
  | Wolfgang
tHANK U so much sir ,
Now i can see the difference but i have a new question another time, i'm developping an oaw project so after generating 
the code i have to build tables, That's why i used jboss ,but when i wanna add the oaw project in the server(add and remove option by right click on the sever ),i can not find the name of the oaw project ,So i created a new ejb3 project and i copy and paste the generated class into it finally i added 
the annotation and the relation ships into entities is it a good idea!!!
Because My collegues add annotation (ejb3 code)in the Template!!
That's why i'm wondering ,and I'm afraid if made a mistake!!
What do you think Sir Knauf!!
Viele Danke für Ihre Hilfe!!
Thank you for ur help

View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269838#4269838

Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269838