@Override
	protected Object getColumnValue(SoldItem item, int columnIndex) {
		switch (columnIndex) {
		case 0:
			return item.getId();
		case 1:
			return item.getName();
		case 2:
			return item.getPrice();
		case 3:
			return item.getQuantity();
		case 4:
			return item.getSum();
		}
		throw new IllegalArgumentException("Column index out of range");
	}