@Override
	public int compare(Column column, Row one, Row two) {
		String oneText = one.getDataAsText(column);
		String twoText = two.getDataAsText(column);

		return NumericComparator.caselessCompareStrings(oneText != null ? oneText : "", twoText != null ? twoText : ""); //$NON-NLS-1$ //$NON-NLS-2$
	}