How to map returned cursor to a POJO / Bean in Hibernate?

[hildich kilal]

Hi
I have a requirement where I need to create an object based on soem big calculation. The result is from 2-3 tables and I am using an Oracle Stored procedure for the same.
The stored procedure will return a cursor.
Now how can I map the cursor directly to some Java class / POJO using EJB3 / hibernate? As I dont have any underlying table for this entity so I am getting error when i try to define NamedNativeQuery for this?

I have following definition

   
@NamedNativeQuery( name = "getSectors"
    		 , query = "{ ? = call MyPackage.getSectorDetails(?,?)}"
    		 , resultClass = SectorDetail.class
    		 , hints = { @QueryHint(name = "org.hibernate.callable", value = "true")
    			   , @QueryHint(name = "org.hibernate.readOnly", value = "true") 
    			   }
		 )
 

I have my stored procedure in place which returns a cursor with some say 5-6 columns. But as SectorDetail class can not be tied to a table (as no table exists) .
So how can I do this?

Or is the only way to do this is loop through returned cursor and get column values one by one and create a list of SectorDetail object?

Thanks