ActCtrl.java

@RestController @RequestMapping(path = "/act-tracking")
public class ActivityTrackingController {

    @RequestMapping(
		path = { "", "/" },
		method = RequestMethod.GET,
		produces = MediaType.APPLICATION_JSON_VALUE)
	public List<VActTracking> query(
		@RequestParam(name="q", defaultValue="") String q, 
		@RequestParam(name="page", defaultValue="0")   int page,
		@RequestParam(name="size", defaultValue="150") int size,
		@RequestParam(name="order", defaultValue="-id") String order
	) {		
		if (q.isEmpty()) {
			return tracking.find(pao.from(page, size, order));
		}
		
		return tracking.find(q, pao.from(page, size, order));
	}
  
}