void GetCache(string sessionId, string key, out object value, string group, string subGroup, out Alachisoft.NCache.Web.Caching.Cache cache, bool isGet, ref LockHandle lockHandle, bool acquireLock)
{
value = null;
//Implementation For Raiynair cookieless robots
string sidPrefix = string.Empty;
sidPrefix = sessionId.Substring(0, 4);
if (!_settings.PrimaryCache.Contains(sidPrefix) && _isSessionCookieless)
{
_isSessionCookieless = false;
cache = null;
return;
}
_isSessionCookieless = false;
cache = _caches[GetCache(sessionId)] as Alachisoft.NCache.Web.Caching.Cache;
if (cache != null)
{
if (isGet)
{
value = cache.Get(key, Alachisoft.NCache.Web.Caching.Cache.NoLockExpiration, ref lockHandle, acquireLock);
}
}
else
{
if (_currentSessionCache == null || _currentSessionCache == string.Empty)
{
IDictionaryEnumerator cacheDic = _caches.GetEnumerator();
do
{
/// This code will ensure that primary cache is used first to be lookedin.
if (cache == null)
{
cache = _caches[_primaryCache] as Alachisoft.NCache.Web.Caching.Cache;
}
else
{
cache = (Alachisoft.NCache.Web.Caching.Cache)cacheDic.Value;// select the cache from enumerator.
// primary cache is already traversed so no need to do it again.
if (cache.ToString().Equals(_primaryCache))
{
continue;
}
}
if (isGet)
{
value = cache.Get(key, Alachisoft.NCache.Web.Caching.Cache.NoLockExpiration, ref lockHandle, acquireLock);
}
else
{
if (cache.Contains(key))
{
value = new object();
break;
}
}
} while (cacheDic.MoveNext() && value == null);
if (value != null) // value was found from one of the caches. so use that cache for all further operations during this HTTP request.
{
_currentSessionCache = cache.ToString();
}
else// value wasn't found from any of the caches. thus use hte primary cache for all further operations.
{
_currentSessionCache = _primaryCache;
}
}
else
{
cache = _caches[_currentSessionCache] as Alachisoft.NCache.Web.Caching.Cache;
if (isGet)
{
value = cache.Get(key, Alachisoft.NCache.Web.Caching.Cache.NoLockExpiration, ref lockHandle, acquireLock);
}
}
}
}
