Ordering with filter in Google app engine data store

Question

In Google DataStore , I used ordering by one property and filtered by other property. But Datastore throws exception.

Lets say i filter property of firstname and ordered by creationdate

String firstname = "Smith";
query.setFilter("firstname == :1");
query.setOrdering("creationdate desc");
query.execute(firstname)

It is not working.

Answer 1

In the past I got an exception when we were dealing with multiple attributes; I was suggested to use indexing. See if that helps

https://developers.google.com/appengine/docs/java/config/indexconfig