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Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 3 posts ] 
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 Post subject: ManyToMany from the same table?
PostPosted: Tue Mar 30, 2010 6:00 pm 
Newbie

Joined: Tue Mar 30, 2010 2:10 pm
Posts: 4
Perhaps this question has been asked before, however I was unable to find an answer in the forum.

The problem is the following:

I have a class that says the folowing

Code:
public class User {

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
@Column(name = "ID")
private Integer id;
@ManyToMany
List<Users> friends;
@ManyToMany
List<Users> friendsRequests;
...


How do I specify that the friends are saved in the FRIENDS table, and the friendsRequests are saved in the FRIENDSREQUESTS table?

Given the current code, hibernate creates USERS_USERS table which does not distinguish the FRIENDS from the FRIENDSREQUESTS....

Thanks in advance...

Vasko


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 Post subject: Re: ManyToMany from the same table?
PostPosted: Wed Mar 31, 2010 7:44 am 
Regular
Regular

Joined: Thu May 07, 2009 5:56 am
Posts: 94
Location: Toulouse, France
hi, did you try this?

Code:
@ManyToMany
@JoinTable(name = "user_to_friendsusers")
List<Users> friends;
@ManyToMany
@JoinTable(name = "user_to_friendsrequest")
List<Users> friendsRequests;

_________________
everything should be made as simple as possible, but not simpler (AE)


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 Post subject: Re: ManyToMany from the same table?
PostPosted: Wed Mar 31, 2010 10:03 am 
Newbie

Joined: Tue Mar 30, 2010 2:10 pm
Posts: 4
Yes, I did try that and it did not work.. However, it was my mistake because I did not drop the original Users table, so Hibernate tried just an update, regarding it as its an default operation in my persistence.xml... After I dropped the Users table it worked like a charm... :)

Thanks anyway for the reply...


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