public class CacheEventFilter : IFilter, 
	IPortableObject

This filter is intended to be used by various IObservableCache listeners that are interested in particular subsets of CacheEvent notifications emitted by the cache.

Usage examples:

• a filter that evaluates to true if an Employee object is inserted into a cache with a value of IsMarried property set to true.
  CopyC#

  new CacheEventFilter(CacheEventMask.Inserted,
  new EqualsFilter("IsMarried", true));

• a filter that evaluates to true if any object is removed from a cache.
  CopyC#

  new CacheEventFilter(CacheEventMask.Deleted);

• a filter that evaluates to true if there is an update to an Employee object where either an old or new value of LastName property equals to "Smith".
  CopyC#

  new CacheEventFilter(CacheEventMask.Updated,
  new EqualsFilter("LastName", "Smith"));

• a filter that is used to keep a cached keys collection result based on some cache filter up-to-date.
  CopyC#

  ICollection keys = new ArrayList();
  IFilter filterEvt = new CacheEventFilter(filterCache);
  ICacheListener listener = new TestListener();
  cache.AddCacheListener(listener, filterEvt, true);
  keys.AddAll(cache.GetKeys(filterCache));

System..::..Object
  Tangosol.Util.Filter..::..CacheEventFilter