Thanks Jeff, I think I will use Longs as you suggest. I was originally thinking "why add an extra piece of data when there's a unique value there?" Well, now I know why!
Just one question - the DatastoreService.allocateIdRange() - when would this be used? I have read the javadoc and understand that it reserves the IDs for bulk loading etc, but can you give an example of when it might be used. At the moment I have some code that creates 5 lists of my 5 entities (dummy data), puts all 5 lists to the datastore, links them up using keys, and then puts them all again. Is there a better way to do this? Thanks again for being so helpful. Drew -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine-java/-/ErZFcwnAoRUJ. 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.
