Having this error after deploying my code to cloud, using google appengine, i use objectify indexing for my filtering.
here is my java class (Entity) file containing the index
@Entity
public class Session{
@Index private Integer year;
@Index private Key<Institute> institute;
//some other manipulation goes below
}
When am trying to call a list of entity from datastore using objectify like this
ofy().load().type(Session.class).filter("institute",t).order("year").list();//order by year
it throws the below error on my console , the below image shows it , sorry not too clear
You need to add suggested index definition to your datastore-indexes.xml
file. If you don't have this file, you need to create it in /war/WEB-INF/ folder:
<?xml version="1.0" encoding="utf-8"?>
<datastore-indexes
autoGenerate="true">
<datastore-index kind="Session" ancestor="false" source="manual">
<property name="institute" direction="asc"/>
<property name="year" direction="asc"/>
</datastore-index>
</datastore-indexes>
Note that most index definitions can be auto-genereated when you test your app on the development server, but sometimes it's not easy to test every possible use case and manual definitions may be an easier option.
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