Re: M:N && Proxy

[Thomas Mahler]

Hi Edson,

Edson Carlos Ericksson Richter wrote:
Hi!

I've discovered a bug in M:N relationships and proxys.

To give some light about the problem, if I have two classes

class A {
   private Integer id;
   private String description;
   public Integer getId( ) { return id; }
   public void setId( Integer newId ) { this.id = newId; }
   public String getDescription( ) { return this.description; }
   public void setDescription( String newDesc ) { this.description =
newDesc; }
}
class B {
   private Integer id;
   private List allA;
   public Integer getId( ) { return id; }
   public void setId( Integer newId ) { this.id = newId; }
   public void setAllA( List allA ) { this.allA = allA; }
   public void getAllA( ) { return this.allA; }
}
Now, I create a  non-decomposed M:N relationship. Then if I delete an
element with
B b = new B();
b.getAllA( ).remove( 0 );
OJB removes the A object from the indirection table AND from A table!!!
depends on the auto-delete settings in the collection-descriptor.

Now, if I change to:

class B {
   private Integer id;
   private List allA = new ArrayList();
   public Integer getId( ) { return id; }
   public void setId( Integer newId ) { this.id = newId; }
   public void setAllA( List allA ) { this.allA.clear(); this.allA.addAll(
allA ); }
   public void getAllA( ) { return this.allA; }
}
OJB works as expected. 
What do you expect? that only entries from the indirection table get 
deleted? should be configurable with auto-delete="true|false".

Appear that OJB is not correctly managing
CollectionProxy elements in M:N non-decomposed (I've not tried manual M:N).
what has the change from
private List allA;
to
private List allA = new ArrayList();
to do with proxies?
puzzled,
Thomas
Can you confirm this?

Thanks,

Edson Richter

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