Hi, I have a query filter on an entity Person that person.name be in listA and person.country in listB. As far as I can see, there're 2 options: 1. Create a query "select t from Person t where t.name = :listAElement and t.country = :listBElement" and run it listA.size() * listB.size() times, then combine the result sets. 2. Create a query "select t from Person t where t.name =:listAElement" and run it once, then for each entity in the resultset, check if its country is in listB.
For option 1, I am not sure about querying the datastore too many times will case a serious performance issue. For option 2, I may have to get all results back, may be several several thousands, and this may be not achievable, is it? Any help is highly appreciated. Thanks, Ray --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---