Result Representation

This example shows how to modify the query output without effecting the objects in the database. Store Pilots function is used to fill in the database.

SelectAndChangePilots

SimpleExamples.java: selectAndChangePilots
01private static void selectAndChangePilots() { 02 ObjectContainer container = database(); 03 if (container != null) { 04 try { 05 List<Pilot> result = container.query(new Predicate<Pilot>() { 06 public boolean match(Pilot pilot) { 07 // Add ranking to the pilots during the query. 08 // Note: pilot records in the database won't 09 // be changed!!! 10 if (pilot.getPoints() <= 5) { 11 pilot.setName(pilot.getName() + ": weak"); 12 } else if (pilot.getPoints() > 5 13 && pilot.getPoints() <= 15) { 14 pilot.setName(pilot.getName() + ": average"); 15 } else if (pilot.getPoints() > 15) { 16 pilot.setName(pilot.getName() + ": strong"); 17 } 18 return true; 19 } 20 }); 21 listResult(result); 22 } catch (Exception ex) { 23 System.out.println("System Exception: " + ex.getMessage()); 24 } finally { 25 closeDatabase(); 26 } 27 } 28 }