2009/12/23 Eugene Kuleshov <[email protected]> > > John, I still hope to find a plain JDO solution that won't tie my > application to GAE-specific model and helper libraries that working > around GAE restrictions. >
I understand completely. Twig is just there as an alternative if you decide that the time spent overcoming JDO-GAE limitations is not worth the cost in code portability. > Also, I would prefer to not manually inlinine parent's data into the > child because it a) cause data duplication (e.g. I have set the data > in all places upon creation); b) it makes model even worse when parent > has more then one child type (e.g. order/orderItem, order/ > orderDelivery, etc). I should mention that I used an order model only > as an example and my model is a bit more complex then that. > The underlying datastore cannot do what you want in a single query unless you denormalise you data. You seem to be describing the need for a rdbms join which is not supported. -- 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 [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-java?hl=en.
