[appengine-java] Re: Retrieving the number of entities into the DS

[Patrizio Munzi]

Hi Jason, Thanks for your answer. However I forgot to specify that I'd like to know the number of entities of a specific kind which have a specific value in one of its field (for example number of Student which attend a specific course). It looks like Statistics don't fit this aim, not that they should though. BR,     Patrizio Jason (Google) wrote: You can also use the new datastore statistics API, which is probably faster although I haven't timed this myself: http://code.google.com/appengine/docs/java/datastore/stats.html - Jason On Mon, Oct 26, 2009 at 6:42 AM, Patrizio Munzi <patrizio.mu...@eris4.com> wrote: Hi all, what's the best way to know the number of entities of a specific kind saved into the DS? Of course I'd like to know the optimized way, without retrieving all the objects. Thanks -- Patrizio Munzi Product Specialist Viale Bruno Buozzi, 19 - 00197 Roma (Italy) tel: +39 06 4543 3540 fax: +39 06 4543 3587 mobile: +39 393 7195 164 mail: patrizio.mu...@eris4.com web: http://www.eris4.com skype: eris4_munzi --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---