(I've posted this message one day ago but it did not appear on the group discussion list, so i will post it again. Hope i am not spamming or anything)
Hello. I'm using app engine to write a business application. I've read that during a transaction one can modify only entities within the same entity group. How would one approach the following scenario? : Consider the "Account object" with the "Owner" and "Credit" fields. If i want to make a credit transfer between accounts A and B (A.credit--; B.credit++), it must be done in a single transaction. That can only happen if A and B are in the same entity group (from what i understand) Since a credit transfer can be done between any two random accounts, i must put them all in the same entity group; but this way, two unrelated transfers (A to B and C to D let's say) cannot be done at the same time anymore. Which again is not desired (i understand that having a single big entity group is bad practice) I think this is a pretty general problem (not related only to this scenario), so how is it solved? --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
