Hi liqwei, You can get the total count of a specific query as follows:
Query query = new Query(Book.getKind()); PreparedQuery pq = ds.prepare(query); FetchOptions option = FetchOptions.Builder.withLimit(Integer.MAX_VALUE); out.println(pq.countEntities(option)); Hope this helps, Yasuo Higa On Sun, Nov 7, 2010 at 11:02 AM, liqwei <liq...@gmail.com> wrote: > case 【PreparedQuery.countEntities()】 is Deprecated。 > > but how can I get the Total Count of a specific Query? > > the 【PreparedQuery.countEntities(FetchOptions fetchOptions) 】only > return the count specificed by fetchOptions! > > ex. > Query query = new Query(Book.getKind()); // there are 3 entities with > "Book" kind in datastore zone > PreparedQuery pq = ds.prepare(query); > FetchOptions option = FetchOptions.Builder.withLimit(2); > out.println(pq.countEntities()); // the count I really > want, but the method is Deprecated currently; > out.println(pq.countEntities(option)); // the count only return > 2, but it should return 3 entity in this query; > > 3ks! > > -- > 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-j...@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-j...@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.
