Hi Andrea, We saw your message to dev@ already, and there was a reply:
https://lists.apache.org/thread.html/Z8c9iuyg8obghec I guess you haven't seen it as the reply was sent to the list, not to you directly. So now I am including your address in cc:. Now back to your question. Cayenne does operation ordering to satisfy the constraints. But the graph sort algorithm has a few known limitations. Namely it doesn't know how to order dependency cycles (e.g. Employee -> Department -> Manager, who is also an employee). Those have to be resoled manually. There are two solutions: * Manual two-step commits - helps to resolve real cycles, when there's no valid ordering satisfying the constraints at all. * @SortWeight annotation, which forces a certain predefined commit order between two or more entities. It helps to resolve cases with "virtual" cycles (where Cayenne thinks there's a cycle, but the actual commit still has a valid operation ordering that satisfies constraints). Andrus > On May 12, 2016, at 1:15 AM, Andrea Biasillo <[email protected]> wrote: > > Hi! > > My name is Andrea Biasillo, I am software architect in Dataloy AS, Bergen > Norway. In one of our project we use Cayenne as ORM. Unfortunately we are > facing the same problem reported by this case: > > https://issues.apache.org/jira/browse/CAY-1898 > > Is this case never been taken in consideration? Is there a solution or at > least a work-wround? > > Many regards > > -- > > Andrea Biasillo - Dataloy Systems > > P: +47 55 36 03 00 > > M: +4746542580 <%2B47%2055%2036%2003%2000> > > Dataloy Service Desk <http://support.dataloy.com/> > > Dataloy Knowledge Base <http://kb.dataloy.com/> > > Subscribe to the Dataloy Newsletter <http://dataloy-systems.com/?page_id=591> > > twitter.com/dataloy > > www.dataloy-systems.com
