I have the exact same problem with a similar domain and relationships: Game -> (1-1) -> Map -> (1-N) -> Lands
all owned relationships when i save Game sometimes all Lands get saved and sometimes Not What the Hell is going on???? On 2 Feb, 02:01, Apollo <david.moffe...@gmail.com> wrote: > I'm experimenting with App Engine, using JDO and DataNucleus for > persistence. I have a simple domain that includes several > unidirectional relationships. The question comes with nesting those > relationships: > > * Civilization -(1-1)-> Clan > * Civilization -(1-1)-> Land > * Civilization -(1-1)-> Military -(1-N)-> Armies (this is > inconsistent) > * Civilization -(1-N)-> Settlement > > According to the DataNucleus Documentation, persistence-by- > reachability semantics should persist everything by cascading on a > persist of a Civilization. I have a JUnit test to check the basic > storage and retrieval of these objects, but its behavior is > inconsistent. With no changes to the code, repeated runs of the test > give nondeterministic results. Specifically, the armies only persist > about 50% of the time. They are the only test that fails. > > I could more easily understand a scenario where Armies never persist, > but the irregular behavior has me at a loss. Everything else persists > correctly and consistently. I've tried wrapping the factory method in > a transaction and I've tried bidirectional relationships, and neither > have changed the 50/50 pass/fail split in JUnit. > > I am using Annotation-based configuration for DataNucleus, as > described in the App Engine documentation (link not included because > of anti-spam measures). > > My code is posted in our stackoverflow version of this same question: > > http://stackoverflow.com/questions/4847023/inconsistent-cascading-per... -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
