/// <summary>
        /// Processes the specified message context.
        /// </summary>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        internal static void Process(MessageContext messageContext, IndexStoreContext storeContext)
        {
            // TBD : Support concurrent DeleteAllInType for different types
            lock (LockingUtil.Instance.LockerObjects)
            {
                RelayMessage msg;

                if (DataTierUtil.ShouldForwardToDataTier(messageContext.RelayTTL,
                    messageContext.SourceZone,
                    storeContext.MyZone,
                    storeContext.StorageConfiguration.CacheIndexV3StorageConfig.IndexTypeMappingCollection[messageContext.TypeId].IndexServerMode))
                {
                    // Send DeleteAll to Data Store
                    short relatedTypeId;
                    if(!storeContext.TryGetRelatedIndexTypeId(messageContext.TypeId, out relatedTypeId))
                    {
                        LoggingUtil.Log.ErrorFormat("Invalid RelatedTypeId for TypeId - {0}", messageContext.TypeId);
                        throw new Exception("Invalid RelatedTypeId for TypeId - " + messageContext.TypeId);
                    }
                    msg = new RelayMessage(relatedTypeId, 0, MessageType.DeleteAllInType);
                    storeContext.ForwarderComponent.HandleMessage(msg);
                }

                // Send DeleteAll to local Index storage
                msg = new RelayMessage(messageContext.TypeId, 0, MessageType.DeleteAllInType);
                storeContext.IndexStorageComponent.HandleMessage(msg);

                // Delete hash mapping entries in file
                storeContext.RemoveType(messageContext.TypeId);
            }
        }
Esempio n. 2
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        /// <summary>
        /// Processes the specified message context.
        /// </summary>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        /// <returns>Raw CacheIndexInternal</returns>
        internal static byte[] Process(MessageContext messageContext, IndexStoreContext storeContext)
        {
            byte[] payloadByteArray = null;
            RelayMessage getMsg = new RelayMessage
                                      {
                                          MessageType = MessageType.Get,
                                          Id = IndexCacheUtils.GeneratePrimaryId(messageContext.ExtendedId),
                                          ExtendedId = IndexServerUtils.FormExtendedId(messageContext.ExtendedId, 0)  // Pull first of the multiple indexes
                                      };

            if (storeContext.StorageConfiguration.CacheIndexV3StorageConfig.IndexTypeMappingCollection.Contains(messageContext.TypeId))
            {
                getMsg.TypeId = messageContext.TypeId;
            }
            else if (storeContext.RelatedTypeIds.TryGetValue(messageContext.TypeId, out getMsg.TypeId))
            {
            }
            else
            {
                LoggingUtil.Log.InfoFormat("Invalid TypeID for GetMessage {0}", messageContext.TypeId);
                return payloadByteArray;
            }

            storeContext.IndexStorageComponent.HandleMessage(getMsg);

            if (getMsg.Payload != null)
            {
                payloadByteArray = getMsg.Payload.ByteArray;
            }
            return payloadByteArray;
        }
Esempio n. 3
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        /// <summary>
        /// Gets the data into resultItemList items.
        /// </summary>
        /// <param name="resultItemList">The result item list.</param>
        /// <param name="storeContext">The store context.</param>
        /// <param name="messageContext">The message context.</param>
        /// <param name="fullDataIdFieldList">The full data id field list.</param>
        /// <param name="fullDataIdInfo">The full data id info.</param>
        internal static void GetData(List<ResultItem> resultItemList,
            IndexStoreContext storeContext,
            MessageContext messageContext,
            FullDataIdFieldList fullDataIdFieldList,
            FullDataIdInfo fullDataIdInfo)
        {
            byte[] extendedId;
            List<RelayMessage> dataStoreMessages = new List<RelayMessage>();
            short relatedTypeId;
            if (fullDataIdInfo != null && fullDataIdInfo.RelatedTypeName != null)
            {
                if (!storeContext.TryGetTypeId(fullDataIdInfo.RelatedTypeName, out relatedTypeId))
                {
                    LoggingUtil.Log.ErrorFormat("Invalid RelatedCacheTypeName - {0}", fullDataIdInfo.RelatedTypeName);
                    throw new Exception("Invalid RelatedTypeId for TypeId - " + fullDataIdInfo.RelatedTypeName);
                }
            }
            else if (!storeContext.TryGetRelatedIndexTypeId(messageContext.TypeId, out relatedTypeId))
            {
                LoggingUtil.Log.ErrorFormat("Invalid RelatedTypeId for TypeId - {0}", messageContext.TypeId);
                throw new Exception("Invalid RelatedTypeId for TypeId - " + messageContext.TypeId);
            }

            if (resultItemList != null && resultItemList.Count > 0)
            {
                foreach (ResultItem resultItem in resultItemList)
                {
                    extendedId = GetFullDataId(resultItem.IndexId,
                        resultItem,
                        fullDataIdInfo != null && fullDataIdInfo.RelatedTypeName != null ? fullDataIdInfo.FullDataIdFieldList : fullDataIdFieldList);
                    dataStoreMessages.Add(new RelayMessage(relatedTypeId,
                                              IndexCacheUtils.GeneratePrimaryId(extendedId),
                                              extendedId,
                                              MessageType.Get));
                }

                storeContext.ForwarderComponent.HandleMessages(dataStoreMessages);

                int i = 0;
                foreach (ResultItem resultItem in resultItemList)
                {
                    if (dataStoreMessages[i].Payload != null)
                    {
                        resultItem.Data = dataStoreMessages[i].Payload.ByteArray;
                    }
                    else
                    {
                        LoggingUtil.Log.DebugFormat("Fetched Null Data for TypeId: {0}, IndexId: {1}, ItemId: {2}, FullDataId: {3}, PrimaryId: {4}",
                            relatedTypeId,
                            IndexCacheUtils.GetReadableByteArray(resultItem.IndexId),
                            IndexCacheUtils.GetReadableByteArray(resultItem.ItemId),
                            IndexCacheUtils.GetReadableByteArray(dataStoreMessages[i].ExtendedId),
                            IndexCacheUtils.GeneratePrimaryId(dataStoreMessages[i].ExtendedId)
                            );
                    }
                    i++;
                }
            }
        }
        public void GetDataItems(FullDataIdInfo info, bool excludeData, MessageContext messageContext, IndexStoreContext storeContext, BaseMultiIndexIdQueryResult queryResult)
        {
            if (excludeData == false)
            {
                IndexTypeMapping indexTypeMapping =
                storeContext.StorageConfiguration.CacheIndexV3StorageConfig.IndexTypeMappingCollection[messageContext.TypeId];

                DataTierUtil.GetData(queryResult.ResultItemList, storeContext, messageContext, indexTypeMapping.FullDataIdFieldList, info);
            }
        }
        /// <summary>
        /// Processes the specified cache index update.
        /// </summary>
        /// <param name="cacheIndexUpdate">The cache index update.</param>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        internal static void Process(CacheIndexUpdate cacheIndexUpdate, MessageContext messageContext, IndexStoreContext storeContext)
        {
            switch (cacheIndexUpdate.Command.CommandType)
            {
                case CommandType.FilteredIndexDelete:

                    PerformanceCounters.Instance.IncrementCounter(
                        PerformanceCounterEnum.FilterDelete,
                        messageContext.TypeId,
                        1);

                    FilteredIndexDeleteProcessor.Process(cacheIndexUpdate.Command as FilteredIndexDeleteCommand, messageContext, storeContext);
                    break;
            }
        }
        /// <summary>
        /// Processes the specified remote clustered intersection query.
        /// </summary>
        /// <param name="remoteClusteredIntersectionQuery">The remote clustered intersection query.</param>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        /// <returns>IntersectionQueryResult</returns>
        internal static IntersectionQueryResult Process(RemoteClusteredIntersectionQuery remoteClusteredIntersectionQuery, MessageContext messageContext, IndexStoreContext storeContext)
        {
            // increment performance counter
            PerformanceCounters.Instance.SetCounterValue(
                PerformanceCounterEnum.IndexLookupAvgPerRemoteClusteredIntersectionQuery,
                messageContext.TypeId,
                remoteClusteredIntersectionQuery.IndexIdList.Count);
            
            VirtualClusteredIntersectionQuery query = new VirtualClusteredIntersectionQuery(
                 remoteClusteredIntersectionQuery.IndexIdList,
                 remoteClusteredIntersectionQuery.TargetIndexName,
                 storeContext.GetTypeName(messageContext.TypeId))
                                                          {
                                                              ExcludeData = remoteClusteredIntersectionQuery.ExcludeData,
                                                              GetIndexHeader = remoteClusteredIntersectionQuery.GetIndexHeader,
                                                              Filter = remoteClusteredIntersectionQuery.Filter,
                                                              intersectionQueryParamsMapping = remoteClusteredIntersectionQuery.IntersectionQueryParamsMapping,
                                                              PrimaryId = remoteClusteredIntersectionQuery.PrimaryId,
                                                              PrimaryIdList = remoteClusteredIntersectionQuery.PrimaryIdList
                                                          };

            return RelayClient.Instance.SubmitQuery<VirtualClusteredIntersectionQuery, IntersectionQueryResult>(query);
        }
        internal SpanQueryResult Process(RemoteClusteredSpanQuery remoteClusteredSpanQuery, MessageContext messageContext, IndexStoreContext storeContext)
        {
            // increment the performance counter
            PerformanceCounters.Instance.SetCounterValue(
                PerformanceCounterEnum.IndexLookupAvgPerRemoteClusteredSpanQuery,
                messageContext.TypeId,
                remoteClusteredSpanQuery.IndexIdList.Count);

            // creating a spanQuery with copy ctor
            VirtualSpanQuery query = new VirtualSpanQuery(remoteClusteredSpanQuery)
            {
                CacheTypeName = storeContext.GetTypeName(messageContext.TypeId),

                // we get only reference at this point
                ExcludeData = true
            };

            SpanQueryResult queryResult = RelayClient.Instance.SubmitQuery<VirtualSpanQuery, SpanQueryResult>(query);

            GetDataItems(remoteClusteredSpanQuery.FullDataIdInfo, remoteClusteredSpanQuery.ExcludeData, messageContext, storeContext, queryResult);

            return queryResult;
        }
        /// <summary>
        /// Updates the existing index item.
        /// </summary>
        /// <param name="clientIndex">Index from the client.</param>
        /// <param name="cacheIndexInternal">The cache index internal.</param>
        /// <param name="indexInfo">The index info.</param>
        /// <param name="addItem">The add item.</param>
        /// <param name="searchIndex">Index to search.</param>
        /// <param name="storeContext">The store context.</param>
        /// <param name="comparer">The comparer.</param>
        private static void UpdateExistingIndexItem(CacheIndex clientIndex, CacheIndexInternal cacheIndexInternal, Index indexInfo, IndexDataItem addItem, int searchIndex, IndexStoreContext storeContext, InternalItemComparer comparer)
        {
            InternalItem internalItem = cacheIndexInternal.InternalItemList[searchIndex];
            if (clientIndex.TargetIndexName != null) //Save to single index
            {
                if (addItem.Tags != null && addItem.Tags.Count > 0)
                {
                    bool reposition = IsRepositioningOfIndexItemRequired(indexInfo, addItem, internalItem);

                    // Update all tags on the internal item
                    foreach (KeyValuePair<string, byte[]> kvp in addItem.Tags)
                    {
                        storeContext.TagHashCollection.AddTag(cacheIndexInternal.InDeserializationContext.TypeId, kvp.Key);
                        internalItem.UpdateTag(TagHashCollection.GetTagHashCode(kvp.Key), kvp.Value);
                    }

                    // Reposition index item if required
                    if (reposition)
                    {
                        RepositionIndexItem(cacheIndexInternal, indexInfo, addItem, searchIndex, internalItem, comparer);
                    }
                }
            }
            else //Save to multiple indexes
            {
                if (addItem.Tags != null && addItem.Tags.Count > 0)
                {
                    List<string> tagNameList;
                    byte[] tagValue;
                    clientIndex.IndexTagMapping.TryGetValue(cacheIndexInternal.InDeserializationContext.IndexName, out tagNameList);

                    bool reposition = IsRepositioningOfIndexItemRequired(indexInfo, addItem, internalItem);

                    // Update all tags on the internal item
                    foreach (string tagName in tagNameList)
                    {
                        //Add to tagHashCollection
                        storeContext.TagHashCollection.AddTag(cacheIndexInternal.InDeserializationContext.TypeId, tagName);
                        addItem.TryGetTagValue(tagName, out tagValue);
                        internalItem.UpdateTag(TagHashCollection.GetTagHashCode(tagName), tagValue);
                    }

                    // Reposition index item if required
                    if (reposition)
                    {
                        RepositionIndexItem(cacheIndexInternal, indexInfo, addItem, searchIndex, internalItem, comparer);
                    }
                }
            }
        }
        /// <summary>
        /// Adds the new item.
        /// </summary>
        /// <param name="clientIndex">Index from the client.</param>
        /// <param name="cacheIndexInternal">The cache index internal.</param>
        /// <param name="indexInfo">The index info.</param>
        /// <param name="addItem">The add item.</param>
        /// <param name="storeContext">The store context.</param>
        /// <param name="comparer">The comparer.</param>
        private static void AddNewItem(CacheIndex clientIndex,
            CacheIndexInternal cacheIndexInternal,
            Index indexInfo, IndexDataItem addItem,
            IndexStoreContext storeContext,
            InternalItemComparer comparer)
        {
            int searchIndex;
            List<KeyValuePair<int, byte[]>> kvpList;
            searchIndex = cacheIndexInternal.GetInsertPosition(addItem, indexInfo.PrimarySortInfo.SortOrderList[0].SortBy, comparer);

            //Add item to CacheIndexInternal
            kvpList = null;
            if (addItem.Tags != null && addItem.Tags.Count > 0)
            {
                kvpList = new List<KeyValuePair<int, byte[]>>();

                if (clientIndex.TargetIndexName != null) //Save to single index
                {
                    foreach (KeyValuePair<string, byte[]> kvp in addItem.Tags)
                    {
                        //Add to tagHashCollection
                        storeContext.TagHashCollection.AddTag(cacheIndexInternal.InDeserializationContext.TypeId, kvp.Key);
                        kvpList.Add(new KeyValuePair<int, byte[]>(TagHashCollection.GetTagHashCode(kvp.Key), kvp.Value));
                    }
                }
                else //Save to multiple indexes
                {
                    List<string> tagNameList;
                    clientIndex.IndexTagMapping.TryGetValue(cacheIndexInternal.InDeserializationContext.IndexName, out tagNameList);
                    foreach (string tagName in tagNameList)
                    {
                        //Add to tagHashCollection
                        storeContext.TagHashCollection.AddTag(cacheIndexInternal.InDeserializationContext.TypeId, tagName);
                        kvpList.Add(new KeyValuePair<int, byte[]>(TagHashCollection.GetTagHashCode(tagName), addItem.Tags[tagName]));
                    }
                }
            }
            cacheIndexInternal.InsertItem(new InternalItem { ItemId = addItem.ItemId, TagList = kvpList }, searchIndex, true);
        }
Esempio n. 10
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        private static void ProcessAddList(List<CacheIndexInternal> internalIndexList,
            List<IndexItem> cappedDeleteItemList,
            CacheIndex clientIndex,
            IndexStoreContext storeContext,
            IndexTypeMapping indexTypeMapping)
        {
            #region Add new items to each internalIndex

            Index indexInfo;
            InternalItemComparer comparer;
            int searchIndex;

            PerformanceCounters.Instance.SetCounterValue(
                        PerformanceCounterEnum.AddList,
                        indexTypeMapping.TypeId,
                        clientIndex.AddList.Count);

            foreach (CacheIndexInternal cacheIndexInternal in internalIndexList)
            {
                indexInfo = indexTypeMapping.IndexCollection[cacheIndexInternal.InDeserializationContext.IndexName];
                comparer = new InternalItemComparer(indexInfo.PrimarySortInfo.IsTag, indexInfo.PrimarySortInfo.FieldName, indexInfo.PrimarySortInfo.SortOrderList);
                if (clientIndex.AddList.Count > 0)
                {
                    foreach (IndexDataItem addItem in clientIndex.AddList)
                    {
                        searchIndex = cacheIndexInternal.Search(addItem);
                        if (searchIndex > -1)
                        {
                            UpdateExistingIndexItem(clientIndex, cacheIndexInternal, indexInfo, addItem, searchIndex, storeContext, comparer);
                        }
                        else
                        {
                            AddNewItem(clientIndex, cacheIndexInternal, indexInfo, addItem, storeContext, comparer);

                            #region IndexSize Capping
                            if (indexInfo.MaxIndexSize > 0 && cacheIndexInternal.Count > indexInfo.MaxIndexSize)
                            {
                                int deleteIndex = indexInfo.TrimFromTail ? cacheIndexInternal.Count - 1 : 0;
                                //Add item to a list to delete it from the Data Store
                                cappedDeleteItemList.Add(InternalItemAdapter.ConvertToIndexItem(cacheIndexInternal.GetItem(deleteIndex),
                                    cacheIndexInternal.InDeserializationContext));

                                //Delete from Index Store
                                cacheIndexInternal.DeleteItem(deleteIndex, false);
                            }
                            #endregion
                        }
                    }
                }

                //Update metadata
                if (clientIndex.UpdateMetadata && indexTypeMapping.IndexCollection[cacheIndexInternal.InDeserializationContext.IndexName].MetadataPresent)
                {
                    cacheIndexInternal.Metadata = clientIndex.Metadata;
                }
            }

            #endregion
        }
Esempio n. 11
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        /// <summary>
        /// Processes the specified cache index.
        /// </summary>
        /// <param name="cacheIndex">Index of the cache.</param>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        internal static void Process(CacheIndex cacheIndex, MessageContext messageContext, IndexStoreContext storeContext)
        {
            lock (LockingUtil.Instance.GetLock(messageContext.PrimaryId))
            {
                try
                {
                    IndexTypeMapping indexTypeMapping =
                        storeContext.StorageConfiguration.CacheIndexV3StorageConfig.IndexTypeMappingCollection[messageContext.TypeId];

                    #region Extract CacheIndex and Validate from incoming message

                    ValidateSave(cacheIndex);

                    #endregion

                    #region Log CacheIndex before processing
                    StringBuilder dbgIndexInfo = null;
                    if (LoggingUtil.Log.IsDebugEnabled)
                    {
                        dbgIndexInfo = new StringBuilder();
                        dbgIndexInfo.Append("TypeId=").Append(messageContext.TypeId).Append(Environment.NewLine);
                        dbgIndexInfo.Append(IndexServerUtils.GetPrintableCacheIndex(cacheIndex,
                            storeContext.TagHashCollection,
                            messageContext.TypeId));
                    }
                    #endregion

                    #region Init vars

                    List<RelayMessage> indexStorageMessageList = new List<RelayMessage>();
                    List<RelayMessage> dataStorageMessageList = new List<RelayMessage>();
                    List<CacheIndexInternal> internalIndexList = new List<CacheIndexInternal>();
                    List<IndexItem> cappedDeleteItemList = new List<IndexItem>();
                    CacheIndexInternal internalIndex;

                    #endregion

                    if (cacheIndex.IndexVirtualCountMapping == null)
                    {
                        #region Save Items

                        #region Extract CacheIndexInternal from index storage

                        if (cacheIndex.TargetIndexName == null) //Save to multiple indexes
                        {
                            #region Get CacheIndexInternal for multiple indexes

                            foreach (KeyValuePair<string /*IndexName*/, List<string> /*TagNameList*/> kvp in cacheIndex.IndexTagMapping)
                            {
                                Index indexInfo = indexTypeMapping.IndexCollection[kvp.Key];
                                internalIndex = IndexServerUtils.GetCacheIndexInternal(storeContext,
                                    messageContext.TypeId,
                                    cacheIndex.PrimaryId,
                                    cacheIndex.IndexId,
                                    indexInfo.ExtendedIdSuffix,
                                    kvp.Key,
                                    0,
                                    null,
                                    true,
                                    null,
                                    false,
                                    false,
                                    indexInfo.PrimarySortInfo,
                                    indexInfo.LocalIdentityTagList,
                                    indexInfo.StringHashCodeDictionary,
                                    null);

                                if (internalIndex != null)
                                {
                                    // update performance counter
                                    PerformanceCounters.Instance.SetCounterValue(
                                        PerformanceCounterEnum.NumberOfItemsInIndexPerSave,
                                        messageContext.TypeId,
                                        internalIndex.OutDeserializationContext.TotalCount);
                                }

                                if (internalIndex == null || cacheIndex.ReplaceFullIndex) //CacheIndexInternal does not exists or is to be discarded
                                {
                                    internalIndex = new CacheIndexInternal
                                                        {
                                                            InDeserializationContext = new InDeserializationContext
                                                                                           {
                                                                                               TypeId = messageContext.TypeId,
                                                                                               TagHashCollection = storeContext.TagHashCollection,
                                                                                               IndexId = cacheIndex.IndexId,
                                                                                               IndexName = kvp.Key,
                                                                                               InclusiveFilter = true,
                                                                                               PrimarySortInfo = indexInfo.PrimarySortInfo,
                                                                                               LocalIdentityTagNames = indexInfo.LocalIdentityTagList,
                                                                                               StringHashCollection = storeContext.StringHashCollection,
                                                                                               StringHashCodeDictionary = indexInfo.StringHashCodeDictionary
                                                                                           }
                                                        };
                                }

                                internalIndexList.Add(internalIndex);
                            }

                            #endregion
                        }
                        else //Save to single index
                        {
                            #region Get CacheIndexInternal for TargetIndexName

                            Index indexInfo = indexTypeMapping.IndexCollection[cacheIndex.TargetIndexName];

                            internalIndex = IndexServerUtils.GetCacheIndexInternal(storeContext,
                                messageContext.TypeId,
                                cacheIndex.PrimaryId,
                                cacheIndex.IndexId,
                                indexInfo.ExtendedIdSuffix,
                                cacheIndex.TargetIndexName,
                                0,
                                null,
                                true,
                                null,
                                false,
                                false,
                                indexInfo.PrimarySortInfo,
                                indexInfo.LocalIdentityTagList,
                                indexInfo.StringHashCodeDictionary,
                                null);

                            if (internalIndex != null)
                            {
                                // update performance counter
                                PerformanceCounters.Instance.SetCounterValue(
                                    PerformanceCounterEnum.NumberOfItemsInIndexPerSave,
                                    messageContext.TypeId,
                                    internalIndex.OutDeserializationContext.TotalCount);
                            }

                            if (internalIndex == null || cacheIndex.ReplaceFullIndex) //CacheIndexInternal does not exists or is to be discarded
                            {
                                internalIndex = new CacheIndexInternal
                                {
                                    InDeserializationContext = new InDeserializationContext
                                                                             {
                                                                                 TypeId = messageContext.TypeId,
                                                                                 TagHashCollection = storeContext.TagHashCollection,
                                                                                 IndexId = cacheIndex.IndexId,
                                                                                 IndexName = cacheIndex.TargetIndexName,
                                                                                 InclusiveFilter = true,
                                                                                 PrimarySortInfo = indexInfo.PrimarySortInfo,
                                                                                 LocalIdentityTagNames = indexInfo.LocalIdentityTagList,
                                                                                 StringHashCollection = storeContext.StringHashCollection,
                                                                                 StringHashCodeDictionary = indexInfo.StringHashCodeDictionary
                                                                             }
                                };
                            }

                            internalIndexList.Add(internalIndex);

                            #endregion

                        }
                        #endregion

                        #region Log CacheIndexInternals before save
                        if (LoggingUtil.Log.IsDebugEnabled && dbgIndexInfo != null)
                        {
                            dbgIndexInfo.Append(Environment.NewLine).Append(string.Format("BEFORE SAVE {0}",
                                                        IndexServerUtils.GetPrintableCacheIndexInternalList(
                                                            internalIndexList,
                                                            storeContext.TagHashCollection,
                                                            messageContext.TypeId)));
                        }
                        #endregion

                        #region Process Delete and Add List
                        try
                        {
                            #region Process Delete List

                            if (cacheIndex.DeleteList.Count > 0 && !cacheIndex.ReplaceFullIndex)
                            {
                                ProcessDeleteList(internalIndexList, cacheIndex.DeleteList, messageContext.TypeId);
                            }

                            #endregion

                            #region Process Add List

                            if (cacheIndex.AddList.Count > 0 || cacheIndex.UpdateMetadata)
                            {
                                ProcessAddList(internalIndexList, cappedDeleteItemList, cacheIndex, storeContext, indexTypeMapping);
                            }

                            #endregion
                        }
                        catch
                        {
                            LoggingUtil.Log.Debug(IndexServerUtils.GetPrintableCacheIndexInternalList(internalIndexList, storeContext.TagHashCollection, messageContext.TypeId));
                            throw;
                        }
                        #endregion

                        #region Log CacheIndexInternals after save
                        if (LoggingUtil.Log.IsDebugEnabled && dbgIndexInfo != null)
                        {
                            dbgIndexInfo.Append(Environment.NewLine).Append(string.Format("AFTER SAVE {0}",
                                                        IndexServerUtils.GetPrintableCacheIndexInternalList(internalIndexList,
                                                            storeContext.TagHashCollection,
                                                            messageContext.TypeId)));
                        }
                        #endregion

                        #region Data store relay messages for deletes and saves

                        if (DataTierUtil.ShouldForwardToDataTier(messageContext.RelayTTL,
                            messageContext.SourceZone,
                            storeContext.MyZone,
                            indexTypeMapping.IndexServerMode) && !cacheIndex.PreserveData)
                        {
                            byte[] fullDataId;
                            short relatedTypeId;
                            if (!storeContext.TryGetRelatedIndexTypeId(messageContext.TypeId, out relatedTypeId))
                            {
                                LoggingUtil.Log.ErrorFormat("Invalid RelatedTypeId for TypeId - {0}", messageContext.TypeId);
                                throw new Exception("Invalid RelatedTypeId for TypeId - " + messageContext.TypeId);
                            }

                            #region Delete Messages

                            foreach (IndexItem indexItem in cacheIndex.DeleteList)
                            {
                                fullDataId = DataTierUtil.GetFullDataId(cacheIndex.IndexId, indexItem, indexTypeMapping.FullDataIdFieldList);
                                if (fullDataId != null)
                                {
                                    dataStorageMessageList.Add(new RelayMessage(relatedTypeId,
                                                                   IndexCacheUtils.GeneratePrimaryId(fullDataId),
                                                                   fullDataId,
                                                                   MessageType.Delete));
                                }
                            }

                            #endregion

                            #region Save Messages

                            foreach (IndexDataItem indexDataItem in cacheIndex.AddList)
                            {
                                fullDataId = DataTierUtil.GetFullDataId(cacheIndex.IndexId, indexDataItem, indexTypeMapping.FullDataIdFieldList);

                                if (fullDataId != null)
                                {
                                    dataStorageMessageList.Add(new RelayMessage(relatedTypeId,
                                                                    IndexCacheUtils.GeneratePrimaryId(fullDataId),
                                                                    fullDataId,
                                                                    DateTime.Now,
                                                                    indexDataItem.Data ?? new byte[0],
                                                                    storeContext.GetCompressOption(messageContext.TypeId),
                                                                    MessageType.Save));

                                    if (indexDataItem.Data == null || indexDataItem.Data.Length == 0)
                                    {

                                        LoggingUtil.Log.WarnFormat("Saving null data for TypeId: {0}, IndexId: {1}, ItemId: {2}, FullDataId: {3}, PrimaryId: {4}",
                                                                    relatedTypeId,
                                                                    IndexCacheUtils.GetReadableByteArray(cacheIndex.IndexId),
                                                                    IndexCacheUtils.GetReadableByteArray(indexDataItem.ItemId),
                                                                    IndexCacheUtils.GetReadableByteArray(fullDataId),
                                                                    IndexCacheUtils.GeneratePrimaryId(fullDataId));
                                    }

                                }
                            }

                            #endregion

                            #region Capped Item Delete Messages

                            foreach (IndexItem indexItem in cappedDeleteItemList)
                            {
                                fullDataId = DataTierUtil.GetFullDataId(cacheIndex.IndexId, indexItem, indexTypeMapping.FullDataIdFieldList);
                                if (fullDataId != null)
                                {
                                    dataStorageMessageList.Add(new RelayMessage(relatedTypeId,
                                                                   IndexCacheUtils.GeneratePrimaryId(fullDataId),
                                                                   fullDataId,
                                                                   MessageType.Delete));
                                }
                            }

                            #endregion

                            #region Send relay mesaages to data store

                            if (dataStorageMessageList.Count > 0)
                            {
                                storeContext.ForwarderComponent.HandleMessages(dataStorageMessageList);
                            }

                            #endregion
                        }

                        #endregion

                        #endregion

                        if (dbgIndexInfo != null)
                        {
                            LoggingUtil.Log.Debug(dbgIndexInfo.ToString());
                        }
                    }
                    else
                    {
                        #region Update Virtual Count

                        foreach (KeyValuePair<string /*IndexName*/, int /*VirtualCount*/> kvp in cacheIndex.IndexVirtualCountMapping)
                        {
                            Index indexInfo = indexTypeMapping.IndexCollection[kvp.Key];
                            internalIndex = IndexServerUtils.GetCacheIndexInternal(storeContext,
                                                                                   messageContext.TypeId,
                                                                                   cacheIndex.PrimaryId,
                                                                                   cacheIndex.IndexId,
                                                                                   indexInfo.ExtendedIdSuffix,
                                                                                   kvp.Key,
                                                                                   0,
                                                                                   null,
                                                                                   true,
                                                                                   null,
                                                                                   true,
                                                                                   false,
                                                                                   indexInfo.PrimarySortInfo,
                                                                                   indexInfo.LocalIdentityTagList,
                                                                                   indexInfo.StringHashCodeDictionary,
                                                                                   null);

                            if (internalIndex == null)
                            {
                                internalIndex = new CacheIndexInternal
                                                    {
                                                        InDeserializationContext = new InDeserializationContext
                                                                                            {
                                                                                                TypeId = messageContext.TypeId,
                                                                                                TagHashCollection = storeContext.TagHashCollection,
                                                                                                IndexId = cacheIndex.IndexId,
                                                                                                IndexName = kvp.Key,
                                                                                                InclusiveFilter = true,
                                                                                                DeserializeHeaderOnly = true,
                                                                                                PrimarySortInfo = indexInfo.PrimarySortInfo,
                                                                                                LocalIdentityTagNames = indexInfo.LocalIdentityTagList,
                                                                                                StringHashCollection = storeContext.StringHashCollection,
                                                                                                StringHashCodeDictionary = indexInfo.StringHashCodeDictionary
                                                                                            }
                                                    };
                            }
                            else
                            {
                                // update performance counter
                                PerformanceCounters.Instance.SetCounterValue(
                                    PerformanceCounterEnum.NumberOfItemsInIndexPerSave,
                                    messageContext.TypeId,
                                    internalIndex.OutDeserializationContext.TotalCount);
                            }

                            internalIndex.VirtualCount = kvp.Value;
                            internalIndexList.Add(internalIndex);
                        }
                        #endregion
                    }

                    #region Index storage relay messages for each CacheIndexInternal

                    #region Metadata

                    if (indexTypeMapping.MetadataStoredSeperately && cacheIndex.UpdateMetadata)
                    {
                        indexStorageMessageList.Add(new RelayMessage(messageContext.TypeId,
                                                         cacheIndex.PrimaryId,
                                                         cacheIndex.IndexId,
                                                         DateTime.Now,
                                                         cacheIndex.Metadata ?? new byte[0],
                                                         storeContext.GetCompressOption(messageContext.TypeId),
                                                         MessageType.Save));
                    }

                    #endregion

                    #region Index(es)

                    byte[] payload;
                    CompactBinaryWriter writer;
                    RelayMessage indexStorageMessage;
                    byte[] extendedId;

                    foreach (CacheIndexInternal cacheIndexInternal in internalIndexList)
                    {
                        extendedId = IndexServerUtils.FormExtendedId(
                            cacheIndex.IndexId,
                            indexTypeMapping.IndexCollection[cacheIndexInternal.InDeserializationContext.IndexName].ExtendedIdSuffix);

                        // This mess is required until Moods 2.0 migrated to have IVersionSerializable version of CacheIndexInternal
                        // ** TBD - Should be removed later
                        if (LegacySerializationUtil.Instance.IsSupported(messageContext.TypeId))
                        {
                            writer = new CompactBinaryWriter(new BinaryWriter(new MemoryStream()));
                            cacheIndexInternal.Serialize(writer);
                            payload = new byte[writer.BaseStream.Length];
                            writer.BaseStream.Position = 0;
                            writer.BaseStream.Read(payload, 0, payload.Length);

                            indexStorageMessage = new RelayMessage(messageContext.TypeId,
                                 cacheIndex.PrimaryId,
                                 extendedId,
                                 DateTime.Now,
                                 payload,
                                 storeContext.GetCompressOption(messageContext.TypeId),
                                 MessageType.Save);
                        }
                        else
                        {
                            indexStorageMessage = RelayMessage.GetSaveMessageForObject(messageContext.TypeId,
                                cacheIndex.PrimaryId,
                                extendedId,
                                DateTime.Now,
                                cacheIndexInternal,
                                storeContext.GetCompressOption(messageContext.TypeId));
                        }

                        indexStorageMessageList.Add(indexStorageMessage);
                    }

                    #endregion

                    #region Send relay mesaages to index storage

                    storeContext.IndexStorageComponent.HandleMessages(indexStorageMessageList);

                    #endregion

                    #endregion
                }
                catch (Exception ex)
                {
                    LoggingUtil.Log.DebugFormat("CacheIndex: {0}", IndexServerUtils.GetPrintableCacheIndex(cacheIndex, storeContext.TagHashCollection, messageContext.TypeId));
                    throw new Exception("TypeId " + messageContext.TypeId + " -- Error processing save message.", ex);
                }
            }

        }
        /// <summary>
        /// Gets the CacheIndexInternal.
        /// </summary>
        /// <param name="storeContext">The store context.</param>
        /// <param name="typeId">The type id.</param>
        /// <param name="primaryId">The primary id.</param>
        /// <param name="indexId">The index id.</param>
        /// <param name="extendedIdSuffix">The extended id suffix.</param>
        /// <param name="indexName">Name of the index.</param>
        /// <param name="count">The count.</param>
        /// <param name="filter">The filter.</param>
        /// <param name="inclusiveFilter">if set to <c>true</c> includes the items that pass the filter; otherwise , <c>false</c>.</param>
        /// <param name="indexCondition">The index condition.</param>
        /// <param name="deserializeHeaderOnly">if set to <c>true</c> if just CacheIndexInternal header is to be deserialized; otherwise, <c>false</c>.</param>
        /// <param name="getFilteredItems">if set to <c>true</c> get filtered items; otherwise, <c>false</c>.</param>
        /// <param name="primarySortInfo">The primary sort info.</param>
        /// <param name="localIdentityTagNames">The local identity tag names.</param>
        /// <param name="stringHashCodeDictionary">The string hash code dictionary.</param>
        /// <param name="capCondition">The cap condition.</param>
        /// <returns>CacheIndexInternal</returns>
        internal static CacheIndexInternal GetCacheIndexInternal(IndexStoreContext storeContext,
            short typeId,
            int primaryId,
            byte[] indexId,
            short extendedIdSuffix,
            string indexName,
            int count,
            Filter filter,
            bool inclusiveFilter,
            IndexCondition indexCondition,
            bool deserializeHeaderOnly,
            bool getFilteredItems,
            PrimarySortInfo primarySortInfo,
            List<string> localIdentityTagNames,
            Dictionary<int, bool> stringHashCodeDictionary,
            CapCondition capCondition)
        {
            CacheIndexInternal cacheIndexInternal = null;
            byte[] extendedId = FormExtendedId(indexId, extendedIdSuffix);
            RelayMessage getMsg = new RelayMessage(typeId, primaryId, extendedId, MessageType.Get);
            storeContext.IndexStorageComponent.HandleMessage(getMsg);

            if (getMsg.Payload != null) //CacheIndex exists
            {
                cacheIndexInternal = new CacheIndexInternal
                                         {
                                             InDeserializationContext = new InDeserializationContext
                                                                            {
                                                                                TypeId = getMsg.TypeId,
                                                                                TagHashCollection = storeContext.TagHashCollection,
                                                                                IndexId = indexId,
                                                                                IndexName = indexName,
                                                                                MaxItemsPerIndex = count,
                                                                                Filter = filter,
                                                                                InclusiveFilter = inclusiveFilter,
                                                                                IndexCondition = indexCondition,
                                                                                DeserializeHeaderOnly = deserializeHeaderOnly,
                                                                                CollectFilteredItems = getFilteredItems,
                                                                                PrimarySortInfo = primarySortInfo,
                                                                                LocalIdentityTagNames = localIdentityTagNames,
                                                                                StringHashCollection = storeContext.StringHashCollection,
                                                                                StringHashCodeDictionary = stringHashCodeDictionary,
                                                                                CapCondition = capCondition
                                                                            }
                                         };

                // This mess is required until Moods 2.0 migrated to have IVersionSerializable version of CacheIndexInternal
                // ** TBD - Should be removed later
                if (LegacySerializationUtil.Instance.IsSupported(getMsg.TypeId))
                {
                    MemoryStream stream = new MemoryStream(getMsg.Payload.ByteArray);
                    cacheIndexInternal.Deserialize(new CompactBinaryReader(stream));
                }
                else
                {
                    getMsg.GetObject(cacheIndexInternal);
                }
            }

            return cacheIndexInternal;
        }
        /// <summary>
        /// Processes the specified intersection query.
        /// </summary>
        /// <param name="intersectionQuery">The intersection query.</param>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        /// <returns>IntersectionQueryResult</returns>
        internal static IntersectionQueryResult Process(IntersectionQuery intersectionQuery, MessageContext messageContext, IndexStoreContext storeContext)
        {
            //Fetch each index (assume all indexes are local) and perform intersection and return the results
            IntersectionQueryResult intersectionQueryResult;
            List<IndexDataItem> resultItemList = null;
            Dictionary<byte[], IndexHeader> indexIdIndexHeaderMapping = new Dictionary<byte[], IndexHeader>(new ByteArrayEqualityComparer());
            List<string> localIdentityTagNames = null;
            bool isTagPrimarySort = false;
            string sortFieldName = null;
            List<SortOrder> sortOrderList = null;
            StringBuilder exceptionInfo = new StringBuilder();

            try
            {
                if (intersectionQuery.IndexIdList.Count > 0)
                {
                    IndexTypeMapping indexTypeMapping =
                        storeContext.StorageConfiguration.CacheIndexV3StorageConfig.IndexTypeMappingCollection[messageContext.TypeId];
                    ValidateQuery(indexTypeMapping, intersectionQuery);

                    #region Set sort vars
                    
                    Index targetIndexInfo = indexTypeMapping.IndexCollection[intersectionQuery.TargetIndexName];
                    localIdentityTagNames = indexTypeMapping.IndexCollection[intersectionQuery.TargetIndexName].LocalIdentityTagList;
                    bool sortFieldPartOfLocalId = IsSortFieldPartOfLocalId(localIdentityTagNames, targetIndexInfo.PrimarySortInfo);
                    TagSort itemIdTagSort = new TagSort("ItemId", false, new SortOrder(DataType.Int32, SortBy.ASC));
                    
                    if (!sortFieldPartOfLocalId)
                    {
                        //Set sort vars
                        isTagPrimarySort = itemIdTagSort.IsTag;
                        sortFieldName = itemIdTagSort.TagName;
                        sortOrderList = new List<SortOrder>(1) { itemIdTagSort.SortOrder };
                    }
                    else
                    {
                        isTagPrimarySort = targetIndexInfo.PrimarySortInfo.IsTag;
                        sortFieldName = targetIndexInfo.PrimarySortInfo.FieldName;
                        sortOrderList = targetIndexInfo.PrimarySortInfo.SortOrderList;
                    }
                    
                    #endregion

                    #region Fetch CacheIndexInternal and Intersect
                    
                    CacheIndexInternal targetIndex;
                    CacheIndexInternal resultCacheIndexInternal = null;
                    IntersectionQueryParams indexIdParam;
                    byte[] indexId;

                    for (int i = 0; i < intersectionQuery.IndexIdList.Count; i++)
                    {
                        #region Extract index and apply criteria
                        
                        indexId = intersectionQuery.IndexIdList[i];
                        indexIdParam = intersectionQuery.GetIntersectionQueryParamForIndexId(indexId);
                        targetIndex = IndexServerUtils.GetCacheIndexInternal(storeContext,
                            messageContext.TypeId,
                            (intersectionQuery.PrimaryIdList != null && i < intersectionQuery.PrimaryIdList.Count) ?
                                    intersectionQuery.PrimaryIdList[i] :
                                    IndexCacheUtils.GeneratePrimaryId(indexId),
                            indexId,
                            targetIndexInfo.ExtendedIdSuffix,
                            intersectionQuery.TargetIndexName,
                            0,
                            indexIdParam.Filter,
                            true,
                            null,
                            false,
                            false,
                            targetIndexInfo.PrimarySortInfo,
                            targetIndexInfo.LocalIdentityTagList,
                            targetIndexInfo.StringHashCodeDictionary,
                            null);
                        
                        #endregion

                        if (targetIndex != null)
                        {
                            if (targetIndex.Count < 0)
                            {
                                // No items in one of the indexes. Stop Interestion !!
                                resultCacheIndexInternal = null;
                                break;
                            }

                            PerformanceCounters.Instance.SetCounterValue(
                                PerformanceCounterEnum.NumOfItemsInIndexPerIntersectionQuery,
                                messageContext.TypeId,
                                targetIndex.OutDeserializationContext.TotalCount);

                            PerformanceCounters.Instance.SetCounterValue(
                                PerformanceCounterEnum.NumOfItemsReadPerIntersectionQuery,
                                messageContext.TypeId,
                                targetIndex.OutDeserializationContext.ReadItemCount);

                            if (!sortFieldPartOfLocalId)
                            {
                                //Need to sort indexes by item id
                                targetIndex.Sort(itemIdTagSort);
                            }

                            #region Intersection
                            
                            if (resultCacheIndexInternal == null)
                            {
                                // No need to perform intersection for first index
                                resultCacheIndexInternal = targetIndex;
                            }
                            else
                            {
                                IntersectionAlgo.Intersect(isTagPrimarySort,
                                                           sortFieldName,
                                                           localIdentityTagNames,
                                                           sortOrderList,
                                                           resultCacheIndexInternal.InternalItemList,
                                                           targetIndex.InternalItemList);
                                
                                if (resultCacheIndexInternal == null || resultCacheIndexInternal.Count < 1)
                                {
                                    // Unable to fetch one of the indexes. Stop Interestion !!
                                    resultCacheIndexInternal = null;
                                    indexIdIndexHeaderMapping = null;
                                    break;
                                }
                            }
                            
                            #endregion
                        }
                        else
                        {
                            // Unable to fetch one of the indexes. Stop Interestion !!
                            resultCacheIndexInternal = null;
                            indexIdIndexHeaderMapping = null;
                            break;
                        }

                        #region Get MetaData
                        
                        if (intersectionQuery.GetIndexHeader)
                        {
                            if (!indexIdIndexHeaderMapping.ContainsKey(indexId))
                            {
                                indexIdIndexHeaderMapping.Add(indexId,
                                    GetIndexHeader(targetIndex, indexTypeMapping, messageContext.TypeId, IndexCacheUtils.GeneratePrimaryId(indexId), storeContext));
                            }
                        }
                        
                        #endregion
                    }
                    if (resultCacheIndexInternal != null && resultCacheIndexInternal.Count > 0)
                    {
                        resultItemList = CacheIndexInternalAdapter.GetIndexDataItemList(resultCacheIndexInternal, 1, int.MaxValue);
                    }
                    
                    #endregion

                    #region Get data
                    
                    if (!intersectionQuery.ExcludeData && resultItemList != null && resultItemList.Count > 0)
                    {
                        DataTierUtil.GetData(resultItemList, 
                            storeContext, 
                            messageContext, 
                            indexTypeMapping.FullDataIdFieldList, 
                            intersectionQuery.FullDataIdInfo);
                    }
                    
                    #endregion
                }

                intersectionQueryResult = new IntersectionQueryResult(resultItemList,
                         indexIdIndexHeaderMapping,
                         localIdentityTagNames,
                         isTagPrimarySort,
                         sortFieldName,
                         sortOrderList,
                         exceptionInfo.ToString());

                // update performance counter
                PerformanceCounters.Instance.SetCounterValue(
                    PerformanceCounterEnum.IndexLookupAvgPerIntersectionQuery,
                    messageContext.TypeId,
                    intersectionQuery.IndexIdList.Count);
            }
            catch (Exception ex)
            {
                exceptionInfo.Append(" | " + ex.Message);
                intersectionQueryResult = new IntersectionQueryResult(null, null, null, false, null, null, exceptionInfo.ToString());
                LoggingUtil.Log.ErrorFormat("TypeId {0} -- Error processing IntersectionQuery : {1}", messageContext.TypeId, ex);
            }
            return intersectionQueryResult;
        }
        /// <summary>
        /// Processes the specified message context.
        /// </summary>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        internal static void Process(MessageContext messageContext, IndexStoreContext storeContext)
        {
            lock (LockingUtil.Instance.GetLock(messageContext.PrimaryId))
            {
                IndexTypeMapping indexTypeMapping = 
                    storeContext.StorageConfiguration.CacheIndexV3StorageConfig.IndexTypeMappingCollection[messageContext.TypeId];
                List<RelayMessage> dataStorageMessageList = new List<RelayMessage>();
                List<RelayMessage> indexStorageMessageList = new List<RelayMessage>(indexTypeMapping.IndexCollection.Count);
                CacheIndexInternal internalIndex;
                List<byte[]> fullDataIdList;

                if (indexTypeMapping.MetadataStoredSeperately)
                {
                    indexStorageMessageList.Add(new RelayMessage(messageContext.TypeId, 
                                                    messageContext.PrimaryId, 
                                                    messageContext.ExtendedId, 
                                                    MessageType.Delete));
                }

                foreach (Index index in indexTypeMapping.IndexCollection)
                {
                    internalIndex = IndexServerUtils.GetCacheIndexInternal(storeContext,
                        messageContext.TypeId,
                        messageContext.PrimaryId,
                        messageContext.ExtendedId,
                        index.ExtendedIdSuffix,
                        index.IndexName,
                        0,
                        null,
                        true,
                        null,
                        false,
                        false,
                        index.PrimarySortInfo,
                        index.LocalIdentityTagList,
                        index.StringHashCodeDictionary,
                        null);

                    if (internalIndex != null)
                    {
                        #region Deletes messages for data store

                        if (DataTierUtil.ShouldForwardToDataTier(messageContext.RelayTTL, 
                            messageContext.SourceZone, 
                            storeContext.MyZone, 
                            indexTypeMapping.IndexServerMode))
                        {
                            fullDataIdList = DataTierUtil.GetFullDataIds(messageContext.ExtendedId,
                                                                             internalIndex.InternalItemList,
                                                                             indexTypeMapping.FullDataIdFieldList);
                            short relatedTypeId;
                            foreach (byte[] fullDataId in fullDataIdList)
                            {
                                if (fullDataId != null)
                                {
                                    if (storeContext.TryGetRelatedIndexTypeId(messageContext.TypeId, out relatedTypeId))
                                    {
                                        dataStorageMessageList.Add(new RelayMessage(relatedTypeId,
                                                                                    IndexCacheUtils.GeneratePrimaryId(fullDataId), 
                                                                                    fullDataId,
                                                                                    MessageType.Delete));
                                    }
                                    else
                                    {
                                        LoggingUtil.Log.ErrorFormat("Invalid RelatedTypeId for TypeId - {0}", messageContext.TypeId);
                                        throw new Exception("Invalid RelatedTypeId for TypeId - " + messageContext.TypeId);
                                    }
                                }
                            }
                        }
                        
                        #endregion

                        #region Delete messages for index store
                        
                        indexStorageMessageList.Add(new RelayMessage(messageContext.TypeId,
                                                        messageContext.PrimaryId,
                                                        IndexServerUtils.FormExtendedId(messageContext.ExtendedId, index.ExtendedIdSuffix),
                                                        MessageType.Delete));
                        
                        #endregion
                    }
                }

                if (dataStorageMessageList.Count > 0)
                {
                    storeContext.ForwarderComponent.HandleMessages(dataStorageMessageList);
                }

                if (indexStorageMessageList.Count > 0)
                {
                    storeContext.IndexStorageComponent.HandleMessages(indexStorageMessageList);
                }
            }
        }
        /// <summary>
        /// Processes the specified filtered index delete command.
        /// </summary>
        /// <param name="filteredIndexDeleteCommand">The filtered index delete command.</param>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        internal static void Process(
            FilteredIndexDeleteCommand filteredIndexDeleteCommand, 
            MessageContext messageContext, 
            IndexStoreContext storeContext)
        {
            if (filteredIndexDeleteCommand != null)
            {
                IndexTypeMapping indexTypeMapping =
                    storeContext.StorageConfiguration.CacheIndexV3StorageConfig.IndexTypeMappingCollection[messageContext.TypeId];
                Index indexInfo = indexTypeMapping.IndexCollection[filteredIndexDeleteCommand.TargetIndexName];

                #region Get CacheIndexInternal for TargetIndexName

                CacheIndexInternal cacheIndexInternal = IndexServerUtils.GetCacheIndexInternal(storeContext,
                    messageContext.TypeId,
                    filteredIndexDeleteCommand.PrimaryId,
                    filteredIndexDeleteCommand.IndexId,
                    indexInfo.ExtendedIdSuffix,
                    filteredIndexDeleteCommand.TargetIndexName,
                    0,
                    filteredIndexDeleteCommand.DeleteFilter,
                    false,
                    null,
                    false,
                    true,
                    indexInfo.PrimarySortInfo,
                    indexInfo.LocalIdentityTagList,
                    indexInfo.StringHashCodeDictionary,
                    null);

                #endregion

                if (cacheIndexInternal != null)
                {
                    #region Increment perf counters' number
                    
                    PerformanceCounters.Instance.SetCounterValue(
                        PerformanceCounterEnum.NumOfItemsInIndexPerFilterDeleteRequest,
                        messageContext.TypeId,
                        cacheIndexInternal.OutDeserializationContext.TotalCount);

                    PerformanceCounters.Instance.SetCounterValue(
                        PerformanceCounterEnum.NumOfItemsReadPerFilterDeleteRequest,
                        messageContext.TypeId,
                        cacheIndexInternal.OutDeserializationContext.ReadItemCount);

                    PerformanceCounters.Instance.SetCounterValue(
                        PerformanceCounterEnum.NumOfItemsFilteredPerFilterDeleteRequest,
                        messageContext.TypeId,
                        (cacheIndexInternal.OutDeserializationContext.TotalCount - cacheIndexInternal.OutDeserializationContext.FilteredInternalItemList.Count));
                    
                    #endregion

                    #region Update VirtualCount
                    
                    cacheIndexInternal.VirtualCount -= (cacheIndexInternal.OutDeserializationContext.TotalCount - cacheIndexInternal.Count);
                    
                    #endregion

                    #region Save CacheIndexInternal to local storage since item which pass delete filter are pruned in it
                   
                    byte[] extendedId = IndexServerUtils.FormExtendedId(filteredIndexDeleteCommand.IndexId,
                        indexTypeMapping.IndexCollection[cacheIndexInternal.InDeserializationContext.IndexName].ExtendedIdSuffix);

                    RelayMessage indexStorageMessage = RelayMessage.GetSaveMessageForObject(messageContext.TypeId,
                        filteredIndexDeleteCommand.PrimaryId,
                        extendedId,
                        DateTime.Now,
                        cacheIndexInternal,
                        storeContext.GetCompressOption(messageContext.TypeId));

                    storeContext.IndexStorageComponent.HandleMessage(indexStorageMessage);

                    #endregion

                    #region Data store deletes

                    if (DataTierUtil.ShouldForwardToDataTier(messageContext.RelayTTL, 
                            messageContext.SourceZone, 
                            storeContext.MyZone, 
                            indexTypeMapping.IndexServerMode) &&
                        cacheIndexInternal.OutDeserializationContext.FilteredInternalItemList != null &&
                        cacheIndexInternal.OutDeserializationContext.FilteredInternalItemList.Count > 0)
                    {
                        List<RelayMessage> dataStorageMessageList = new List<RelayMessage>();

                        short relatedTypeId;
                        if (!storeContext.TryGetRelatedIndexTypeId(messageContext.TypeId, out relatedTypeId))
                        {
                            LoggingUtil.Log.ErrorFormat("Invalid RelatedTypeId for TypeId - {0}", messageContext.TypeId);
                            throw new Exception("Invalid RelatedTypeId for TypeId - " + messageContext.TypeId);
                        }
                        cacheIndexInternal.InternalItemList = cacheIndexInternal.OutDeserializationContext.FilteredInternalItemList;
                        List<byte[]> fullDataIdList = DataTierUtil.GetFullDataIds(cacheIndexInternal.InDeserializationContext.IndexId, 
                            cacheIndexInternal.InternalItemList, 
                            indexTypeMapping.FullDataIdFieldList);

                        foreach (byte[] fullDataId in fullDataIdList)
                        {
                            if (fullDataId != null)
                            {
                                dataStorageMessageList.Add(new RelayMessage(relatedTypeId,
                                                               IndexCacheUtils.GeneratePrimaryId(fullDataId),
                                                               fullDataId, 
                                                               MessageType.Delete));
                            }
                        }

                        if (dataStorageMessageList.Count > 0)
                        {
                            storeContext.ForwarderComponent.HandleMessages(dataStorageMessageList);
                        }
                    }
                    
                    #endregion
                }
            }
        }
        /// <summary>
        /// Processes the specified contains index query.
        /// </summary>
        /// <param name="containsIndexQuery">The contains index query.</param>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        /// <returns>ContainsIndexQueryResult</returns>
        internal static ContainsIndexQueryResult Process(ContainsIndexQuery containsIndexQuery, MessageContext messageContext, IndexStoreContext storeContext)
        {
            ContainsIndexQueryResult containsIndexQueryResult;
            MultiItemResult multiItemResult = null;
            byte[] metadata = null;
            bool indexExists = false;
            int indexSize = -1;
            int virtualCount = -1;

            try
            {
                IndexTypeMapping indexTypeMapping =
                    storeContext.StorageConfiguration.CacheIndexV3StorageConfig.IndexTypeMappingCollection[messageContext.TypeId];

                #region Check TargetIndexName
                
                if (!indexTypeMapping.IndexCollection.Contains(containsIndexQuery.TargetIndexName))
                {
                    throw new Exception("Invalid TargetIndexName - " + containsIndexQuery.TargetIndexName);
                }
                
                #endregion

                Index targetIndexInfo = indexTypeMapping.IndexCollection[containsIndexQuery.TargetIndexName];
                List<CacheIndexInternal> internalCacheIndexList = new List<CacheIndexInternal>();

                #region Get TargetIndex
                
                CacheIndexInternal cacheIndexInternal = IndexServerUtils.GetCacheIndexInternal(storeContext,
                    messageContext.TypeId,
                    messageContext.PrimaryId,
                    containsIndexQuery.IndexId,
                    targetIndexInfo.ExtendedIdSuffix,
                    containsIndexQuery.TargetIndexName,
                    0,
                    null,
                    true,
                    null,
                    false,
                    false,
                    targetIndexInfo.PrimarySortInfo,
                    targetIndexInfo.LocalIdentityTagList,
                    targetIndexInfo.StringHashCodeDictionary,
                    null);
                
                #endregion

                if (cacheIndexInternal != null)
                {
                    internalCacheIndexList.Add(cacheIndexInternal);
                    indexExists = true;
                    indexSize = cacheIndexInternal.OutDeserializationContext.TotalCount;
                    virtualCount = cacheIndexInternal.VirtualCount;

                    // update the performance counter
                    PerformanceCounters.Instance.SetCounterValue(
                        PerformanceCounterEnum.NumOfItemsInIndexPerContainsIndexQuery,
                        messageContext.TypeId,
                        indexSize);

                    PerformanceCounters.Instance.SetCounterValue(
                        PerformanceCounterEnum.NumOfItemsReadPerContainsIndexQuery,
                        messageContext.TypeId,
                        cacheIndexInternal.OutDeserializationContext.ReadItemCount);

                    int searchIndex;
                    IndexDataItem indexDataItem;

                    foreach (IndexItem queryIndexItem in containsIndexQuery.IndexItemList)
                    {
                        #region Search item in index
                        
                        searchIndex = internalCacheIndexList[0].Search(queryIndexItem);
                        
                        #endregion

                        if (searchIndex > -1)
                        {
                            if (multiItemResult == null)
                            {
                                multiItemResult = new MultiItemResult(containsIndexQuery.IndexId);
                            }
                            indexDataItem = new IndexDataItem(InternalItemAdapter.ConvertToIndexItem(internalCacheIndexList[0].GetItem(searchIndex),
                                internalCacheIndexList[0].InDeserializationContext));

                            #region Get extra tags
                            
                            if (containsIndexQuery.TagsFromIndexes != null && containsIndexQuery.TagsFromIndexes.Count != 0)
                            {
                                foreach (string indexName in containsIndexQuery.TagsFromIndexes)
                                {
                                    Index indexInfo = indexTypeMapping.IndexCollection[indexName];

                                    CacheIndexInternal indexInternal =
                                        IndexServerUtils.GetCacheIndexInternal(storeContext,
                                                                               messageContext.TypeId,
                                                                               messageContext.PrimaryId,
                                                                               containsIndexQuery.IndexId,
                                                                               indexInfo.ExtendedIdSuffix,
                                                                               indexName,
                                                                               0,
                                                                               null,
                                                                               true,
                                                                               null,
                                                                               false,
                                                                               false,
                                                                               indexInfo.PrimarySortInfo,
                                                                               indexInfo.LocalIdentityTagList,
                                                                               indexInfo.StringHashCodeDictionary,
                                                                               null);

                                    if (indexInternal != null)
                                    {
                                        // update the performance counter
                                        PerformanceCounters.Instance.SetCounterValue(
                                            PerformanceCounterEnum.NumOfItemsInIndexPerContainsIndexQuery,
                                            messageContext.TypeId,
                                            indexInternal.OutDeserializationContext.TotalCount);

                                        PerformanceCounters.Instance.SetCounterValue(
                                            PerformanceCounterEnum.NumOfItemsReadPerContainsIndexQuery,
                                            messageContext.TypeId,
                                            indexInternal.OutDeserializationContext.ReadItemCount);

                                        internalCacheIndexList.Add(indexInternal);

                                        IndexServerUtils.GetTags(indexInternal, queryIndexItem, indexDataItem);
                                    }
                                }
                            }
                            
                            #endregion

                            multiItemResult.Add(indexDataItem);
                        }
                    }

                    #region Get data
                    
                    if (!containsIndexQuery.ExcludeData && multiItemResult != null)
                    {
                        byte[] extendedId;
                        List<RelayMessage> dataStoreMessages = new List<RelayMessage>(multiItemResult.Count);
                        short relatedTypeId;
                        if (containsIndexQuery.FullDataIdInfo != null && containsIndexQuery.FullDataIdInfo.RelatedTypeName != null)
                        {
                            if (!storeContext.TryGetTypeId(containsIndexQuery.FullDataIdInfo.RelatedTypeName, out relatedTypeId))
                            {
                                LoggingUtil.Log.ErrorFormat("Invalid RelatedCacheTypeName - {0}", containsIndexQuery.FullDataIdInfo.RelatedTypeName);
                                throw new Exception("Invalid RelatedTypeId for TypeId - " + containsIndexQuery.FullDataIdInfo.RelatedTypeName);
                            }
                        }
                        else if (!storeContext.TryGetRelatedIndexTypeId(messageContext.TypeId, out relatedTypeId))
                        {
                            LoggingUtil.Log.ErrorFormat("Invalid RelatedTypeId for TypeId - {0}", messageContext.TypeId);
                            throw new Exception("Invalid RelatedTypeId for TypeId - " + messageContext.TypeId);
                        }

                        foreach (IndexDataItem resultItem in multiItemResult)
                        {
                            extendedId = DataTierUtil.GetFullDataId(containsIndexQuery.IndexId,
                                resultItem,
                                    containsIndexQuery.FullDataIdInfo != null && containsIndexQuery.FullDataIdInfo.RelatedTypeName != null ?
                                    containsIndexQuery.FullDataIdInfo.FullDataIdFieldList :
                                    indexTypeMapping.FullDataIdFieldList);
                            dataStoreMessages.Add(new RelayMessage(relatedTypeId, IndexCacheUtils.GeneratePrimaryId(extendedId), extendedId, MessageType.Get));
                        }

                        storeContext.ForwarderComponent.HandleMessages(dataStoreMessages);

                        int i = 0;
                        foreach (IndexDataItem resultItem in multiItemResult)
                        {
                            if (dataStoreMessages[i].Payload != null)
                            {
                                resultItem.Data = dataStoreMessages[i].Payload.ByteArray;
                            }
                            i++;
                        }
                    }
                    
                    #endregion

                    #region Get metadata
                    
                    if (containsIndexQuery.GetMetadata)
                    {
                        metadata = IndexServerUtils.GetQueryMetadata(internalCacheIndexList,
                            indexTypeMapping,
                            messageContext.TypeId,
                            messageContext.PrimaryId,
                            containsIndexQuery.IndexId,
                            storeContext);
                    }
                    
                    #endregion
                }
                containsIndexQueryResult = new ContainsIndexQueryResult(multiItemResult, metadata, indexSize, indexExists, virtualCount, null);
            }
            catch (Exception ex)
            {
                containsIndexQueryResult = new ContainsIndexQueryResult(null, null, -1, false, -1, ex.Message);
                LoggingUtil.Log.ErrorFormat("TypeId {0} -- Error processing ContainsIndexQuery : {1}", messageContext.TypeId, ex);
            }
            return containsIndexQueryResult;
        }
        /// <summary>
        /// Gets the index header.
        /// </summary>
        /// <param name="targetIndex">Index of the target.</param>
        /// <param name="indexTypeMapping">The index type mapping.</param>
        /// <param name="typeId">The type id.</param>
        /// <param name="primaryId">The primary id.</param>
        /// <param name="storeContext">The store context.</param>
        /// <returns>IndexHeader</returns>
        private static IndexHeader GetIndexHeader(CacheIndexInternal targetIndex,
            IndexTypeMapping indexTypeMapping,
            short typeId,
            int primaryId,
            IndexStoreContext storeContext)
        {
            IndexHeader indexHeader = new IndexHeader();

            #region Metadata
            
            if (indexTypeMapping.MetadataStoredSeperately)
            {
                #region Check if metadata is stored seperately
                
                //Send a get message to local index storage and fetch seperately stored metadata
                RelayMessage getMsg = new RelayMessage(typeId, primaryId, targetIndex.InDeserializationContext.IndexId, MessageType.Get);
                storeContext.IndexStorageComponent.HandleMessage(getMsg);
                if (getMsg.Payload != null)
                {
                    indexHeader.Metadata = getMsg.Payload.ByteArray;
                }
                
                #endregion
            }
            else
            {
                #region Check metadata on targetIndex
                
                if (indexTypeMapping.IndexCollection[targetIndex.InDeserializationContext.IndexName].MetadataPresent)
                {
                    indexHeader.Metadata = targetIndex.Metadata;
                }
                
                #endregion
            }
            
            #endregion

            #region VirtualCount
            
            indexHeader.VirtualCount = targetIndex.VirtualCount;
            
            #endregion

            return indexHeader;
        }
        /// <summary>
        /// Processes the specified random query.
        /// </summary>
        /// <param name="randomQuery">The random query.</param>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        /// <returns>RandomQueryResult</returns>
        internal static RandomQueryResult Process(RandomQuery randomQuery, MessageContext messageContext, IndexStoreContext storeContext)
        {
            RandomQueryResult randomQueryResult;
            List<ResultItem> resultItemList = null;
            bool indexExists = false;
            int indexSize = -1;
            int virtualCount = -1;
            byte[] metadata = null;

            try
            {
                IndexTypeMapping indexTypeMapping =
                    storeContext.StorageConfiguration.CacheIndexV3StorageConfig.IndexTypeMappingCollection[messageContext.TypeId];

                #region Validate Query

                ValidateQuery(indexTypeMapping, randomQuery);

                #endregion

                Index targetIndexInfo = indexTypeMapping.IndexCollection[randomQuery.TargetIndexName];

                #region Prepare Result

                #region Extract index and apply criteria

                CacheIndexInternal targetIndex = IndexServerUtils.GetCacheIndexInternal(storeContext,
                    messageContext.TypeId,
                    messageContext.PrimaryId,
                    randomQuery.IndexId,
                    targetIndexInfo.ExtendedIdSuffix,
                    randomQuery.TargetIndexName,
                    0,
                    randomQuery.Filter,
                    true,
                    null,
                    false,
                    false,
                    targetIndexInfo.PrimarySortInfo,
                    targetIndexInfo.LocalIdentityTagList,
                    targetIndexInfo.StringHashCodeDictionary,
                    null);

                #endregion

                if (targetIndex != null)
                {
                    indexSize = targetIndex.OutDeserializationContext.TotalCount;
                    virtualCount = targetIndex.VirtualCount;
                    indexExists = true;

                    // update performance counters
                    PerformanceCounters.Instance.SetCounterValue(
                        PerformanceCounterEnum.NumOfItemsInIndexPerRandomQuery,
                        messageContext.TypeId,
                        indexSize);

                    PerformanceCounters.Instance.SetCounterValue(
                        PerformanceCounterEnum.NumOfItemsReadPerRandomQuery,
                        messageContext.TypeId,
                        targetIndex.OutDeserializationContext.ReadItemCount);

                    #region Populate resultLists

                    int indexItemCount = targetIndex.Count;
                    int resultListCount = Math.Min(randomQuery.Count, indexItemCount);
                    IEnumerable<int> itemPositionList = Algorithm.RandomSubset(new Random(), 0, indexItemCount - 1, resultListCount);
                    resultItemList = CacheIndexInternalAdapter.GetResultItemList(targetIndex, itemPositionList);

                    #endregion

                    #region Get data

                    if (!randomQuery.ExcludeData)
                    {
                        DataTierUtil.GetData(resultItemList, storeContext, messageContext, indexTypeMapping.FullDataIdFieldList, randomQuery.FullDataIdInfo);
                    }

                    #endregion

                    #region Get metadata

                    if (randomQuery.GetMetadata)
                    {
                        metadata = IndexServerUtils.GetQueryMetadata(new List<CacheIndexInternal>(1) { targetIndex },
                            indexTypeMapping,
                            messageContext.TypeId,
                            messageContext.PrimaryId,
                            randomQuery.IndexId,
                            storeContext);
                    }

                    #endregion

                #endregion

                }
                randomQueryResult = new RandomQueryResult(indexExists, indexSize, metadata, resultItemList, virtualCount, null);
            }
            catch (Exception ex)
            {
                randomQueryResult = new RandomQueryResult(false, -1, null, null, -1, ex.Message);
                LoggingUtil.Log.ErrorFormat("TypeId {0} -- Error processing RandomQuery : {1}", messageContext.TypeId, ex);
            }
            return randomQueryResult;
        }
        /// <summary>
        /// Processes the specified first last query.
        /// </summary>
        /// <param name="firstLastQuery">The first last query.</param>
        /// <param name="messageContext">The message context.</param>
        /// <param name="storeContext">The store context.</param>
        /// <returns>FirstLastQueryResult</returns>
        internal static FirstLastQueryResult Process(FirstLastQuery firstLastQuery, MessageContext messageContext, IndexStoreContext storeContext)
        {
            FirstLastQueryResult firstLastQueryResult;
            List<ResultItem> firstPageResultItemList = null;
            List<ResultItem> lastPageResultItemList = null;
            bool indexExists = false;
            int indexSize = -1;
            int virtualCount = -1;
            byte[] metadata = null;

            try
            {
                IndexTypeMapping indexTypeMapping = 
                    storeContext.StorageConfiguration.CacheIndexV3StorageConfig.IndexTypeMappingCollection[messageContext.TypeId];

                #region Validate Query
                
                ValidateQuery(indexTypeMapping, firstLastQuery);
                
                #endregion

                int maxItemsPerIndex = ((firstLastQuery.FirstPageSize > 0) && (firstLastQuery.LastPageSize < 1))
                                           ? firstLastQuery.FirstPageSize
                                           : int.MaxValue;

                Index targetIndexInfo = indexTypeMapping.IndexCollection[firstLastQuery.TargetIndexName];

                #region Prepare Result

                #region Extract index and apply criteria
                
                CacheIndexInternal targetIndex = IndexServerUtils.GetCacheIndexInternal(storeContext,
                    messageContext.TypeId,
                    messageContext.PrimaryId,
                    firstLastQuery.IndexId,
                    targetIndexInfo.ExtendedIdSuffix,
                    firstLastQuery.TargetIndexName,
                    maxItemsPerIndex,
                    firstLastQuery.Filter,
                    true,
                    null,
                    false,
                    false,
                    targetIndexInfo.PrimarySortInfo,
                    targetIndexInfo.LocalIdentityTagList,
                    targetIndexInfo.StringHashCodeDictionary,
                    null);

                #endregion

                if (targetIndex != null)
                {
                    indexSize = targetIndex.OutDeserializationContext.TotalCount;
                    virtualCount = targetIndex.VirtualCount;
                    indexExists = true;

                    // update perf counters
                    PerformanceCounters.Instance.SetCounterValue(
                        PerformanceCounterEnum.NumOfItemsInIndexPerFirstLastQuery,
                        messageContext.TypeId,
                        indexSize);

                    PerformanceCounters.Instance.SetCounterValue(
                        PerformanceCounterEnum.NumOfItemsReadPerFirstLastQuery,
                        messageContext.TypeId,
                        targetIndex.OutDeserializationContext.ReadItemCount);

                    #region Populate resultLists
                    
                    if (firstLastQuery.FirstPageSize + firstLastQuery.LastPageSize <= targetIndex.Count)
                    {
                        firstPageResultItemList = CacheIndexInternalAdapter.GetResultItemList(targetIndex, 1, firstLastQuery.FirstPageSize);
                        lastPageResultItemList = CacheIndexInternalAdapter.GetResultItemList(targetIndex, 
                            targetIndex.Count - firstLastQuery.LastPageSize + 1,
                            firstLastQuery.LastPageSize);
                    }
                    else
                    {
                        //Populate everything in firstPageResultItemList
                        firstPageResultItemList = CacheIndexInternalAdapter.GetResultItemList(targetIndex, 1, targetIndex.Count);
                    }
                    
                    #endregion

                    #region Get data
                    
                    if (!firstLastQuery.ExcludeData)
                    {
                        //First Page
                        if (firstPageResultItemList != null)
                        {
                            DataTierUtil.GetData(firstPageResultItemList, 
                                storeContext, 
                                messageContext, 
                                indexTypeMapping.FullDataIdFieldList, 
                                firstLastQuery.FullDataIdInfo);
                        }

                        //Last Page
                        if (lastPageResultItemList != null)
                        {
                            DataTierUtil.GetData(lastPageResultItemList, 
                                storeContext, 
                                messageContext, 
                                indexTypeMapping.FullDataIdFieldList, 
                                firstLastQuery.FullDataIdInfo);
                        }
                    }
                    
                    #endregion

                    #region Get metadata
                    
                    if (firstLastQuery.GetMetadata)
                    {
                        metadata = IndexServerUtils.GetQueryMetadata(new List<CacheIndexInternal>(1) { targetIndex },
                            indexTypeMapping, 
                            messageContext.TypeId,
                            messageContext.PrimaryId,
                            firstLastQuery.IndexId,
                            storeContext);
                    }
                    
                    #endregion
                }

                #endregion

                firstLastQueryResult = new FirstLastQueryResult(indexExists, indexSize, metadata, firstPageResultItemList, lastPageResultItemList, virtualCount, null);
            }
            catch (Exception ex)
            {
                firstLastQueryResult = new FirstLastQueryResult(false, -1, null, null, null, -1, ex.Message);
                LoggingUtil.Log.ErrorFormat("TypeID {0} -- Error processing FirstLastQuery : {1}", messageContext.TypeId, ex);
            }
            return firstLastQueryResult;
        }
        /// <summary>
        /// Gets the query metadata.
        /// </summary>
        /// <param name="internalCacheIndexList">The internal cache index list.</param>
        /// <param name="indexTypeMapping">The index type mapping.</param>
        /// <param name="typeId">The type id.</param>
        /// <param name="primaryId">The primary id.</param>
        /// <param name="extendedId">The extended id.</param>
        /// <param name="storeContext">The store context.</param>
        /// <returns></returns>
        internal static byte[] GetQueryMetadata(List<CacheIndexInternal> internalCacheIndexList,
            IndexTypeMapping indexTypeMapping,
            short typeId,
            int primaryId,
            byte[] extendedId,
            IndexStoreContext storeContext)
        {
            if (indexTypeMapping.MetadataStoredSeperately)
            {
                #region Check if metadata is stored seperately
                //Send a get message to local index storage and fetch index for IndexId
                RelayMessage getMsg = new RelayMessage(typeId, primaryId, extendedId, MessageType.Get);
                storeContext.IndexStorageComponent.HandleMessage(getMsg);

                if (getMsg.Payload != null)
                {
                    return getMsg.Payload.ByteArray;
                }
                #endregion
            }
            else
            {
                #region Check metadata on indexes
                foreach (CacheIndexInternal cacheIndexInternal in internalCacheIndexList)
                {
                    if (indexTypeMapping.IndexCollection[cacheIndexInternal.InDeserializationContext.IndexName].MetadataPresent)
                    {
                        return cacheIndexInternal.Metadata;
                    }
                }
                #endregion
            }
            return null;
        }