// GROUP COLUMNS
if (GROUP_FILTER_PARAMETER.equals(map.get(clientId))) {
String groupColumnId = map.get(GROUP_FILTER_PARAMETER);
// turn off grouping
table.disableGrouping();
if (groupColumnId != null) {
// turn off sorting by all columns
table.getSortPriority().clear();
for (Iterator<UIColumn> columns = table.getChildColumns(); columns
.hasNext();) {