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Re: [eclipselink-users] Entity serialization on bidirectional relationships 
It seems you somehow have two A objects (i.e. A != A->B->A).
Where did you get A from?  It seems you have violated object identity
somewhere on your server.  Ensure you are always using the correct
copy/managed instance of your objects.

If you have used a NoIdentityMap (CacheType.None) this could be the cause,
if so do not do this.  To disable caching set shared=false instead.

In general when querying A from the EntityManager, A == A->B->A should
always be true.

If B has a relationship to a different A, or C, then you would need to
instantiate this as well if it is lazy.


Mike Traum-2 wrote:
> 
> I am seeing some odd behavior with deserialization of bidirectional 
> relationships. I have the following object map:
> A->B->C
> where '->' is a one to many mapping which is bidirectional. I have no 
> weaving, so the OneToMany is an IndirectList and the ManyToOne is not.
> VM1:
> - I fetch all A's with a query
> - I get the size() of the B collection so that is gets instantiated
> - serialize A's
> VM2:
> - deserialize A's
> - getting A->B->A->B throws a ValidationException about traversing a 
> relationship using indirection
> 
> To clarify (sort of), after deserialization, I can get B from A, but if 
> I get A from B afterwards, B is then an IndirectList.
> 
> If I set the OneToMany eager, this problem does not present itself.
> 
> If this is not understandable, I can post my test case.
> 
> Thanks,
> Mike
> 
> 


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