/**
* Helper function to get value from map.
*
* @param map Map to take value from.
* @param key Key to search in map.
* @param ifNull Default value if {@code null} was returned by map.
* @param <K> Key type.
* @param <V> Value type.
* @return Value from map or default value if map return {@code null}.
*/
public static <K, V> V getOrElse(Map<K, V> map, K key, V ifNull) {
assert map != null;
V res = map.get(key);
return res != null ? res : ifNull;
}
/** {@inheritDoc} */
@Override
public boolean isCacheTopologyValid(GridCacheContext cctx) {
return cctx.config().getTopologyValidator() != null && cacheValidRes.containsKey(cctx.cacheId())
? cacheValidRes.get(cctx.cacheId())
: true;
}