I really don't understand what's being asked. You don't manually set an entity group; the rule is the same for low-level datastore transactions - for any txn, you can only access one entity group. You get exceptions when you violate this rule.
An Objectify (class) instance is created with a transactional context. Want a new transaction? Create a new instance. You can't recycle them. If there's something confusing about the documentation, let me know. Jeff On Sat, Apr 23, 2011 at 7:58 AM, Robert Kluin <[email protected]> wrote: > Hey Matija, > I'm not familiar with Objectify's source, but perhaps Jeff could > suggest a simple / more efficient way to set the connection's entity > group for Java apps. > > > For Python apps it is possible to get the transaction connection > object then 'manually' set the entity group; however, you need to use > 'internal' methods / attributes to do that (at least with the > interface I'm familiar with). > > > > Robert > > > > > On Sat, Apr 23, 2011 at 15:59, Matija <[email protected]> wrote: >> Hi Robert. Bravo. This approach solved problem. >> We are using objectify and for quick test reason I have used this to set >> this internal 'connection' entity group: >> try { >> dao.ofy().getDatastore().get(KeyFactory.createKey("Random", new >> Random().nextLong())); >> } catch (EntityNotFoundException e) { >> // Ignore >> } >> Deferred implementation that we use doesn't have access to request headers >> (but on Monday or Tuesday maybe it will have ;)). There is no reason to use >> costly random class when task name is unique. >> Now question is how to set their internal transaction entity group so that I >> don't need to use one get datastore operation with throwing exception? >> >> Tnx, MATijA. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/google-appengine?hl=en. >> > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
