I've been reading and googling and searching... but not sure what the latest, up-to-date information is on this:
in GAE "parents" and "references" are two different things. when you create an object in GAE you can, on insert, assign the "parent"... and this puts the new object into the parents "entity group"... which lets you: - use those objects within transactions in the entity group - do a query on an object and specify an "ancestor" (which can be many many levels up the heirarchy, since the gae "key" actually contains a composite of its entire entity group path, I think) when it comes to transactions, I saw a few discussions that said we can just use the native GAE transaction methods in order to run transactions... but that doesn't really help unless we can assign parents to our objects (thus creating these "entity groups"). I also saw some discussions about implementing this feature of "parents"... but I can't figure out if it exists yet. I would really like to be able to use transactions and also do "has ancestor" queries... but I think there's going to end up being a disconnect on what is possible in both the the "big table" world and the "SQL" world... making it difficult to make a single DAL be all things HOPEFULLY what I just wrote makes sense... I could very well be completely confused and would love any feedback to help straighten me out :) Thank you, -Nick Franceschina
