package util;
import java.util.ArrayList;
import java.util.List;
import com.google.appengine.api.datastore.DatastoreService;
import com.google.appengine.api.datastore.DatastoreServiceFactory;
import com.google.appengine.api.datastore.Entity;
import com.google.appengine.api.datastore.FetchOptions;
import com.google.appengine.api.datastore.PreparedQuery;
import com.google.appengine.api.datastore.Query;
import com.google.appengine.api.datastore.Query.SortDirection;
import entity.User;
public class UserHelper {
public static List<User> getLadder(int offset, int number)
{
Query query = new Query("User");
query.addSort("rating", SortDirection.DESCENDING);
DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
PreparedQuery pq = ds.prepare(query);
List<Entity> results = pq.asList(FetchOptions.Builder.withLimit(number).offset(offset));
List<User> ret = new ArrayList<User>();
for(Entity e: results)
{
ret.add(new User(e));
}
//System.out.println("Have " + ret.size());
return ret;
}
}