private static <T> Boolean needSearch(Long limit, AbstractMap<T, Long> items) {
Long sum = 0L;
for (Long v : items.values()) {
sum += v;
}
return sum > limit;
}
/**
* Returns a shallow copy of this <tt>AbstractMap</tt> instance: the keys and values themselves
* are not cloned.
*
* @return a shallow copy of this map.
*/
protected Object clone() throws CloneNotSupportedException {
AbstractMap result = (AbstractMap) super.clone();
result.keySet = null;
result.values = null;
return result;
}