cayenne-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Andrus Adamchik <and...@objectstyle.org>
Subject Re: Should localObject() traverse the whole graph?
Date Fri, 18 May 2007 16:39:42 GMT
Hi Kevin,

'localObject' is not moving objects, between contexts. Instead it  
locates an object counterpart (another copy) in the target context,  
instantiating a fault if needed. In light of that your question about  
graph traversal is probably not relevant.

Andrus



On May 18, 2007, at 7:32 PM, Kevin Menard wrote:

> Hi,
>
> I've just noticed that localObject does not traverse whole graph of  
> the
> object moving to the new DC.  Is this by design, due to computational
> complexity, or a bug?
>
> Just to illustrate the "problem":
>
> Given three data objects {A, B, C}, registered with the following data
> contexts:
>
> DC1: A (committed)
> DC2: B (new, modified) C (new, modified)
>
> Such that B and C have a to-one relationship.  A and B also required a
> relationship, but are in separate DCs.  So, move B to DC1 via
> localObject.  After that, we have:
>
> DC1: A B
> DC2: C?
>
> The relationship between B & C is clobbered.  I haven't debugged  
> enough
> to see if C is still in DC2 or not.  All handles to DC2 are  
> effectively
> destroyed in the normal code, so I'd have to add additional code to  
> deal
> with it.
>
> Anyway, I know how to workaround it, but am wondering whether this is
> something that should go into JIRA or if it's something that won't
> change.
>
> Thanks,
> Kevin
>
> Kevin Menard
> Servprise International, Inc.
> 800.832.3823 x308
>


Mime
View raw message