@SuppressWarnings("unchecked")
public Collection<?> sortItems(Collection<?> items, Limit limit) {
ComparatorChain chain = new ComparatorChain();
SortSet sortSet = limit.getSortSet();
for (Sort sort : sortSet.getSorts()) {
if (sort.getOrder() == Order.ASC) {
chain.addComparator(new BeanComparator(sort.getProperty(), new NullComparator()));
} else if (sort.getOrder() == Order.DESC) {
chain.addComparator(new BeanComparator(sort.getProperty(), new NullComparator()), true);
}
}
if (chain.size() > 0) {
Collections.sort((List<?>) items, chain);
}
return items;
}