The main change is not
private List allA;
to
private List allA = new ArrayList();
but the change of
public void setAllA( List allA ) { this.allA = allA; }
to
public void setAllA( List allA ) { this.allA.clear();
this.allA.addAll( allA ); }
> depends on the auto-delete settings in the collection-descriptor.
makes no difference. But if I change the setAllA method, then make diff...
I don't understand why... The only response I've found is if it's related to
CollectionProxies...
Edson Richter
----- Original Message -----
From: "Thomas Mahler" <[EMAIL PROTECTED]>
To: "OJB Users List" <[EMAIL PROTECTED]>
Sent: Wednesday, June 18, 2003 3:02 AM
Subject: Re: M:N && Proxy
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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