Thank you! Is the *post_export_function*, as described in the article, the only way to implement Custom Logic? The problem is that, as far as I can see, the entities get filtered only after they are downloaded by the Bulkloader, that is, on the client side (that's why the function is called *post *export). This process is rather slow, though. Is there a possibility to perform that filtering on the server? Something like "*pre_export_function*"?
Thank you, Mikhail среда, 17 октября 2012 г., 10:24:12 UTC+4 пользователь Sam написал: > > This would require Custom Logic to be implemented by you. > > My suggestion... > 1. Define an auto-update time-stamp property for each Entity Group > 2. Write Logic to Download Data based on the time-stamp > 3. If required, store the Last downloaded time-stamp value for each Entity > Group, so that you may proceed from there in the next iteration. > > The above is what we have implemented for incremental offline backups. > > > On Wed, Oct 17, 2012 at 12:15 AM, Mikhail Dubov <[email protected]<javascript:> > > wrote: > >> Just read an article on how to download data from AppEngine Datastore: >> https://developers.google.com/appengine/docs/python/tools/uploadingdata >> >> It's a great tutorial, but, as far as I can see, it says nothing on >> whether it is possible to download entities from Datastore that were >> created after a *specific date*, which is actually my current need - I >> want to download my data periodically and each time I do this it would be >> preferrable to get the *new/updated entities only*. So, is that possible? >> >> Thanks, >> Mikhail >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine" group. >> To view this discussion on the web visit >> https://groups.google.com/d/msg/google-appengine/-/R4N9oJ-rOUkJ. >> To post to this group, send email to >> [email protected]<javascript:> >> . >> To unsubscribe from this group, send email to >> [email protected] <javascript:>. >> 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 view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/N8ZiFIO3t5EJ. 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.
