If you need to do it all at once there's no secret trick or magic to do it. You can use backends servers, cron jobs, task queues o the appengine-mapper but in all cases you'll have to pay number_of_entities*(get_price + put_price) plus all the processing price.
On Mon, Jan 23, 2012 at 1:39 PM, Matthew Jaggard <matt...@jaggard.org.uk>wrote: > Unfortunately that's basically the only option. > > Maybe someone can comment on MapReduce, although from what I understand > it's not any cheaper. > > On 23 January 2012 15:33, kt <kanutripa...@cypatterns.com> wrote: > >> Hi, >> I have a situation where I need to update a property in several entities >> amass. Something similar in SQL would be : >> update mytable set mycolumn = (mycolumn + 10); >> >> I do not want to iterate through all entities since it will be very >> expensive. Any ideas? >> >> -- >> 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/-/1GQxcYEFTPsJ. >> 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. >> > > -- > 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 > 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. > -- Guit: Elegant, beautiful, modular and *production ready* gwt applications. http://code.google.com/p/guit/ -- 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 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.
