I found this:http://code.google.com/intl/en/appengine/docs/revision_history.html
2010-04-21 The datastore now supports pre-allocating system IDs in application-defined ranges. This is useful for preserving system IDs when importing entities exported from another app. So I think whenever you put an entity into datastore without specify an id, datastore will generate a one not exist before. But when you import a large number of entities, maybe you want to make sure at the same time, datastore won't generate an entity id the same as you imported, otherwise you may overwrite it by yourself. ---------- keakon On Fri, Oct 29, 2010 at 5:41 AM, vivpuri <[email protected]> wrote: > I am having an issue with allocate_ids(model_key, count) - > http://code.google.com/appengine/docs/python/datastore/functions.html > - on localhost. My understanding of this function is that IDs > allocated via this function call for a kind, will not be generated > again. Is there a requirement to use ids generated by this function > call in Keys to ensure that they will not be issued again? > > > -- > 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.
