/// <summary>
/// Removes the object and key pair from the cache. The key is specified as parameter.
/// Moreover it take a removal reason and a boolean specifying if a notification should
/// be raised.
/// </summary>
/// <param name="key">key of the entry.</param>
/// <param name="removalReason">reason for the removal.</param>
/// <param name="notify">boolean specifying to raise the event.</param>
/// <param name="isUserOperation"></param>
/// <param name="lockId"></param>
/// <param name="accessType"></param>
/// <param name="operationContext"></param>
/// <returns>item value</returns>
public override CacheEntry Remove(object key, ItemRemoveReason removalReason, bool notify, bool isUserOperation, object lockId, LockAccessType accessType, OperationContext operationContext)
{
CacheEntry e = null;
CacheEntry pe = null;
{
object actualKey = key;
if (key is object[])
{
actualKey = ((object[])key)[0];
}
if (accessType != LockAccessType.IGNORE_LOCK)
{
pe = GetInternal(actualKey, false, operationContext);
if (pe != null)
{
if (pe.IsItemLocked() && !pe.CompareLock(lockId))
{
throw new LockingException("Item is locked.");
}
}
}
e = RemoveInternal(actualKey, removalReason, isUserOperation, operationContext);
EventId eventId = null;
EventContext eventContext = null;
OperationID opId = operationContext.OperatoinID;
if (e != null)
{
if (_stateTransferKeyList != null && _stateTransferKeyList.ContainsKey(key))
_stateTransferKeyList.Remove(key);
// commented by muds
try
{
if (e.ExpirationHint != null)
{
_context.ExpiryMgr.RemoveFromIndex(key);
((IDisposable)e.ExpirationHint).Dispose();
}
}
catch (Exception ex)
{
NCacheLog.Error("LocalCacheBase.Remove(object, ItemRemovedReason, bool):", ex.ToString());
}
if (IsSelfInternal)
{
// Disposed the one and only cache entry.
((IDisposable)e).Dispose();
if (removalReason == ItemRemoveReason.Expired)
{
_context.PerfStatsColl.IncrementExpiryPerSecStats();
}
else if (!_context.CacheImpl.IsEvictionAllowed && removalReason == ItemRemoveReason.Underused)
{
_context.PerfStatsColl.IncrementEvictPerSecStats();
}
_context.PerfStatsColl.IncrementCountStats((long)Count);
}
if (notify)
{
CallbackEntry cbEtnry = e.Value as CallbackEntry;// e.DeflattedValue(_context.SerializationContext);
if (cbEtnry != null && cbEtnry.ItemRemoveCallbackListener != null && cbEtnry.ItemRemoveCallbackListener.Count > 0)
{
//generate event id
if (!operationContext.Contains(OperationContextFieldName.EventContext)) //for atomic operations
{
eventId = EventId.CreateEventId(opId);
}
else //for bulk
{
eventId = ((EventContext)operationContext.GetValueByField(OperationContextFieldName.EventContext)).EventID;
}
eventId.EventType = EventType.ITEM_REMOVED_CALLBACK;
eventContext = new EventContext();
eventContext.Add(EventContextFieldName.EventID, eventId);
EventCacheEntry eventCacheEntry = CacheHelper.CreateCacheEventEntry(cbEtnry.ItemRemoveCallbackListener, e);
eventContext.Item = eventCacheEntry;
eventContext.Add(EventContextFieldName.ItemRemoveCallbackList, cbEtnry.ItemRemoveCallbackListener.Clone());
//Will always reaise the whole entry for old clients
NotifyCustomRemoveCallback(actualKey, e, removalReason, false, (OperationContext)operationContext.Clone(), eventContext);
}
}
}
else if (_stateTransferKeyList != null && _stateTransferKeyList.ContainsKey(key))
{
_stateTransferKeyList.Remove(key);
}
}
_stats.UpdateCount(this.Count);
if (_context.PerfStatsColl != null)
{
_context.PerfStatsColl.SetCacheSize(Size);
}
return e;
}
/// <summary>
/// Adds a pair of key and value to the cache. If the specified key already exists
/// in the cache; it is updated, otherwise a new item is added to the cache.
/// </summary>
/// <param name="key">key of the entry.</param>
/// <param name="cacheEntry">the cache entry.</param>
/// <returns>returns the result of operation.</returns>
public sealed override CacheInsResultWithEntry Insert(object key, CacheEntry cacheEntry, bool notify, bool isUserOperation, object lockId, LockAccessType access, OperationContext operationContext)
{
CacheInsResultWithEntry result = new CacheInsResultWithEntry();
try
{
CacheEntry pe = null;
CallbackEntry cbEtnry = null;
OperationID opId = operationContext.OperatoinID;
EventId eventId = null;
EventContext eventContext = null;
pe = GetInternal(key, false, operationContext);
result.Entry = pe;
if (pe != null && access != LockAccessType.IGNORE_LOCK)
{
{
if (access == LockAccessType.RELEASE || access == LockAccessType.DONT_RELEASE)
{
if (pe.IsItemLocked() && !pe.CompareLock(lockId))
{
result.Result = CacheInsResult.ItemLocked;
result.Entry = null;
return result;
}
}
if (access == LockAccessType.DONT_RELEASE)
{
cacheEntry.CopyLock(pe.LockId, pe.LockDate, pe.LockExpiration);
}
else
{
cacheEntry.ReleaseLock();
}
}
}
ExpirationHint peExh = pe == null ? null : pe.ExpirationHint;
if (pe != null && pe.Value is CallbackEntry)
{
cbEtnry = pe.Value as CallbackEntry;
cacheEntry = CacheHelper.MergeEntries(pe, cacheEntry);
}
result.Result = InsertInternal(key, cacheEntry, isUserOperation, pe, operationContext);
if ((result.Result == CacheInsResult.Success || result.Result == CacheInsResult.SuccessNearEvicition) && _stateTransferKeyList != null &&
_stateTransferKeyList.ContainsKey(key))
{
result.Result = result.Result == CacheInsResult.Success ? CacheInsResult.SuccessOverwrite : CacheInsResult.SuccessOverwriteNearEviction;
}
// Not enough space, evict and try again.
if (result.Result == CacheInsResult.NeedsEviction || result.Result == CacheInsResult.SuccessNearEvicition
|| result.Result == CacheInsResult.SuccessOverwriteNearEviction)
{
Evict();
if (result.Result == CacheInsResult.SuccessNearEvicition) result.Result = CacheInsResult.Success;
if (result.Result == CacheInsResult.SuccessOverwriteNearEviction) result.Result = CacheInsResult.SuccessOverwrite;
}
// Operation completed!
if (result.Result == CacheInsResult.Success || result.Result == CacheInsResult.SuccessOverwrite)
{
// commented by muds
//remove the old hint from expiry index.
if (peExh != null)
_context.ExpiryMgr.RemoveFromIndex(key);
if (cacheEntry.ExpirationHint != null)
{
cacheEntry.ExpirationHint.CacheKey = (string)key;
if (isUserOperation)
{
try
{
_context.ExpiryMgr.ResetHint(peExh, cacheEntry.ExpirationHint);
}
catch (Exception e)
{
RemoveInternal(key, ItemRemoveReason.Removed, false, operationContext);
throw e;
}
}
else
{
cacheEntry.ExpirationHint.ReInitializeHint(Context);
}
_context.ExpiryMgr.UpdateIndex(key, cacheEntry);
}
if (IsSelfInternal)
{
_context.PerfStatsColl.IncrementCountStats((long)Count);
}
}
_stats.UpdateCount(this.Count);
switch (result.Result)
{
case CacheInsResult.Success:
break;
case CacheInsResult.SuccessOverwrite:
if (notify)
{
EventCacheEntry eventCacheEntry = CacheHelper.CreateCacheEventEntry(Runtime.Events.EventDataFilter.DataWithMetadata, cacheEntry); ;
EventCacheEntry oldEventCacheEntry = CacheHelper.CreateCacheEventEntry(Runtime.Events.EventDataFilter.DataWithMetadata, pe);
if (cbEtnry != null)
{
if (cbEtnry.ItemUpdateCallbackListener != null && cbEtnry.ItemUpdateCallbackListener.Count > 0)
{
if (!operationContext.Contains(OperationContextFieldName.EventContext)) //for atomic operations
{
eventId = EventId.CreateEventId(opId);
eventContext = new EventContext();
}
else //for bulk
{
eventId = ((EventContext)operationContext.GetValueByField(OperationContextFieldName.EventContext)).EventID;
}
eventContext = new EventContext();
eventId.EventType = EventType.ITEM_UPDATED_CALLBACK;
eventContext.Add(EventContextFieldName.EventID, eventId);
eventContext.Item = eventCacheEntry;
eventContext.OldItem = oldEventCacheEntry;
NotifyCustomUpdateCallback(key, cbEtnry.ItemUpdateCallbackListener, false, (OperationContext)operationContext.Clone(), eventContext);
}
}
}
break;
}
}
finally
{
}
if (_context.PerfStatsColl != null)
{
_context.PerfStatsColl.SetCacheSize(Size);
}
return result;
}
