public String removePosition(long positionId) {
   for (Position position : positionBunchBean.getAllPositions()) {
     if (position.getPositionId() == positionId) positionBo.removePosition(position);
   }
   resetView();
   return "";
 }
 private void resetView() {
   positionBunchBean.setAllPositions(null);
   setName("");
 }