/**
* This is used to determine if an entry should be removed from the cache. If the cache has
* reached its capacity then the listener, if one was specified is given a callback to tell any
* other participating objects the entry has been removed.
*
* @param eldest this is the candidate for removal
*/
@Override
protected boolean removeEldestEntry(Entry<K, V> eldest) {
int size = size();
if (size <= capacity) {
return false;
}
if (listener != null) {
V value = eldest.getValue();
K key = eldest.getKey();
listener.notifyRemoved(key, value);
}
return true;
}
@SuppressWarnings("unchecked")
@Override
public synchronized V remove(Object key) {
removalListener.onRemoval((K) key, get(key));
return super.remove(key);
}
