@Override
public void sort(Object[] propertyId, boolean[] ascending) {
// Grid in 7.4 may call this method with empty sorting instructions...
if (propertyId.length > 0) {
Comparator<T> comparator = new PropertyComparator(propertyId, ascending);
Collections.sort(backingList, comparator);
fireItemSetChange();
}
}
@Override
public Collection<?> getSortableContainerPropertyIds() {
if (backingList instanceof SortableLazyList) {
// Assume SortableLazyList can sort by any Comparable property
} else if (backingList instanceof LazyList) {
// When using LazyList, don't support sorting by default
// as the sorting should most probably be done at backend call level
return Collections.emptySet();
}
final ArrayList<String> props = new ArrayList<String>();
for (Object a : getContainerPropertyIds()) {
DynaProperty db = getDynaClass().getDynaProperty(a.toString());
if (db != null
&& db.getType() != null
&& (db.getType().isPrimitive() || Comparable.class.isAssignableFrom(db.getType()))) {
props.add(db.getName());
}
}
return props;
}