/// <summary>
/// This method handles data modification callbacks
/// </summary>
/// <param name="key"> Modifed string key </param>
/// <param name="key"> Metada about updated item in cache</param>
private static void QueryDataModified(string @string, CQEventArg cQEventArg)
{
// Print output on console
Console.WriteLine("\nContinuous Query data modification event is received from cache.");
switch (cQEventArg.EventType)
{
case EventType.ItemAdded: Console.WriteLine(@string + " is added to cache.");
break;
case EventType.ItemRemoved: Console.WriteLine(@string + " is removed from cache.");
break;
case EventType.ItemUpdated:
Console.WriteLine(@string + " is updated in cache.");
if (cQEventArg.Item != null)
{
PrintCustomerDetails(cQEventArg.Item.GetValue <Customer>());
}
break;
default:
break;
}
}
private void QueryItemCallBackForInvaluableCustomers(string key, CQEventArg arg)
{
var cacheItem = _cache.GetCacheItem(key);
cacheItem.Expiration = new Expiration(ExpirationType.Sliding, new TimeSpan(0, 0, 5));
_cache.Insert(key, cacheItem);
}
private void QueryItemCallBackForGoldCustomers(string key, CQEventArg arg)
{
var cacheItem = _cache.GetCacheItem(key);
cacheItem.Expiration = new Expiration(ExpirationType.None);
Tag[] tags = new Tag[1];
tags[0] = new Tag("GoldCustomers");
cacheItem.Tags = tags;
_cache.Insert(key, cacheItem);
ICollection <string> retrievedKeys = _cache.SearchService.GetKeysByTag(tags[0]);
}
private void QueryItemCallBack(string key, CQEventArg arg)
{
var cacheItem = _cache.GetCacheItem(key);
cacheItem.Expiration = new Expiration(ExpirationType.None);
Tag[] tags = new Tag[1];
tags[0] = new Tag("ValuableCustomers");
cacheItem.Tags = tags;
_cache.Insert(key, cacheItem);
ICollection <string> retrievedKeys = _cache.SearchService.GetKeysByTag(tags[0]);
Console.Clear();
Console.WriteLine("{0} Valuable Customers Count:{1}", arg.EventType.ToString(), retrievedKeys.Count);
}
