Hello Jason, I have a similar problem and I use the way you suggest by invoking the detachCopyAll method. It works fine, my objects are detached. I have problem with objects that contain collections. The collections are not detached, they stay null.
I tried several things, like wrapping into a transaction. pm.setDetachAllOnCommit(true); .. Nothing. The only thing that solves the issue is touching that collection before I detache. That is quite ugly code. I am sure it is a little thing but I can not figure it out. Do you have a hint for me? Thank you, Tobias On Sep 5, 1:56 am, "Jason (Google)" <apija...@google.com> wrote: > I can see where our documentation is misleading about this topic, and I'm > working to get this updated. > > - Jason > > On Fri, Sep 4, 2009 at 4:54 PM, Jason (Google) <apija...@google.com> wrote: > > What code are you using to detach the entities? If you're just calling > > setDetachAllOnCommit, then yes, this requires a transaction. If you don't > > use transactions, then you can do something like this: > > > obj = pm.getObjectById(Object.class, key); > > obj = pm.detachCopy(obj); > > > There's a similar detachCopyAll for detaching Collections. I use these in > > my own applications and they work fine. > > > - Jason > > > On Thu, Sep 3, 2009 at 11:28 AM, Esteban Masoero <emaso...@getsense.com.ar > > > wrote: > > >> Hi there, > > >> I'm having a problem similar to the one described here > > >>http://groups.google.com/group/google-appengine-java/browse_thread/th... > >> , > >> but using JDO instead of JPA. > >> Instead of fetching the object in a "normal" way, I fetched it inside a > >> transaction and it worked fine (the object was properly detached). > > >> Should an issue be reported? or is this problem addressed by the the > >> issue 1906 > >> (http://code.google.com/p/googleappengine/issues/detail?id=1906)?(I ask > >> it because as I see, the exceptions thrown by that JPA-examble are jdo > >> exceptions, so it gives me the feeling that JDO and JPA share some > >> components, and consequently it would be the same bug.) > > >> Thanks, > > >> Esteban --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~----------~----~----~----~------~----~------~--~---
