if (metaFields[columnIndex].getType() == MetaField.BOOLEAN) {
if (!empty && metaFields[columnIndex].getType() == MetaField.BOOLEAN) {
	public Class getColumnClass(int columnIndex) {		if (metaFields[columnIndex].getType() == MetaField.BOOLEAN) {			return Boolean.class;		} else {			return String.class;		}	}