public override SpanQueryResult MergeResults(IList <SpanQueryResult> partialResults) { SpanQueryResult finalResult = default(SpanQueryResult); if (partialResults == null || partialResults.Count == 0) { return(finalResult); } // We have partialResults to process ByteArrayEqualityComparer byteArrayEqualityComparer = new ByteArrayEqualityComparer(); Dictionary <byte[] /*IndexId*/, IndexHeader /*IndexHeader*/> completeIndexIdIndexHeaderMapping = new Dictionary <byte[], IndexHeader>(byteArrayEqualityComparer); if (partialResults.Count == 1) { #region Just one cluster was targeted, so no need to merge anything finalResult = partialResults[0]; #endregion } else { #region More than one clusters was targeted List <ResultItem> completeResultItemList = new List <ResultItem>(); BaseComparer baseComparer; int totalCount = 0; int additionalAvailableItemCount = 0; foreach (SpanQueryResult partialResult in partialResults) { if (partialResult != null) { #region Compute TotalCount totalCount += partialResult.TotalCount; #endregion #region Compute PageableItemCount if (GetAdditionalAvailableItemCount) { additionalAvailableItemCount += partialResult.AdditionalAvailableItemCount; } #endregion #region Merge Results if (partialResult.ResultItemList != null && partialResult.ResultItemList.Count > 0) { baseComparer = new BaseComparer(partialResult.IsTagPrimarySort, partialResult.SortFieldName, partialResult.SortOrderList); MergeAlgo.MergeItemLists(ref completeResultItemList, partialResult.ResultItemList, MaxMergeCount, baseComparer); } #endregion #region Update IndexIdIndexHeaderMapping if (GetIndexHeaderType != GetIndexHeaderType.None && partialResult.IndexIdIndexHeaderMapping != null && partialResult.IndexIdIndexHeaderMapping.Count > 0) { foreach (KeyValuePair <byte[], IndexHeader> kvp in partialResult.IndexIdIndexHeaderMapping) { if (!completeIndexIdIndexHeaderMapping.ContainsKey(kvp.Key)) { completeIndexIdIndexHeaderMapping.Add(kvp.Key, kvp.Value); } } } #endregion } } #region Create FinalResult finalResult = new SpanQueryResult { ResultItemList = completeResultItemList, TotalCount = totalCount, AdditionalAvailableItemCount = additionalAvailableItemCount, }; if (GetIndexHeaderType != GetIndexHeaderType.None && completeIndexIdIndexHeaderMapping.Count > 0) { finalResult.IndexIdIndexHeaderMapping = completeIndexIdIndexHeaderMapping; } #endregion #endregion } #region Spanning and Update IndexIdIndexHeaderMapping if required if (ClientSideSubsetProcessingRequired && Span != 0 && finalResult != null) { #region Spanning List <ResultItem> filteredResultItemList = new List <ResultItem>(); if (finalResult.ResultItemList.Count >= Offset) { for (int i = Offset - 1; i < finalResult.ResultItemList.Count && filteredResultItemList.Count < Span; i++) { filteredResultItemList.Add(finalResult.ResultItemList[i]); } } finalResult.ResultItemList = filteredResultItemList; #endregion #region Update IndexIdIndexHeaderMapping to only include metadata relevant after paging if (partialResults.Count != 1 && GetIndexHeaderType == GetIndexHeaderType.ResultItemsIndexIds && completeIndexIdIndexHeaderMapping.Count > 0) { Dictionary <byte[] /*IndexId*/, IndexHeader /*IndexHeader*/> filteredIndexIdIndexHeaderMapping = new Dictionary <byte[], IndexHeader>(byteArrayEqualityComparer); foreach (ResultItem resultItem in finalResult.ResultItemList) { if (!filteredIndexIdIndexHeaderMapping.ContainsKey(resultItem.IndexId)) { filteredIndexIdIndexHeaderMapping.Add(resultItem.IndexId, completeIndexIdIndexHeaderMapping[resultItem.IndexId]); } } finalResult.IndexIdIndexHeaderMapping = filteredIndexIdIndexHeaderMapping.Count > 0 ? filteredIndexIdIndexHeaderMapping : null; } #endregion } #endregion return(finalResult); }
public override PagedIndexQueryResult MergeResults(IList <PagedIndexQueryResult> partialResults) { PagedIndexQueryResult finalResult = default(PagedIndexQueryResult); if (partialResults == null || partialResults.Count == 0) { return(finalResult); } // We have partialResults to process BaseComparer baseComparer = null; ByteArrayEqualityComparer byteArrayEqualityComparer = new ByteArrayEqualityComparer(); Dictionary <byte[] /*IndexId*/, IndexHeader /*IndexHeader*/> completeIndexIdIndexHeaderMapping = new Dictionary <byte[], IndexHeader>(byteArrayEqualityComparer); // resultVer required to determine if server is correctly performing paging logic int resultVer = 0; if (partialResults.Count == 1) { #region Just one cluster was targeted, so no need to merge anything finalResult = partialResults[0]; if (finalResult != null) { resultVer = finalResult.CurrentVersion; } #endregion } else { #region More than one clusters was targeted List <ResultItem> completeResultItemList = new List <ResultItem>(); GroupByResult completeGroupByResult = new GroupByResult(null); int totalCount = 0; int pageableItemCount = 0; StringBuilder exceptionStringBuilder = new StringBuilder(); bool indexCapSet = false; int indexCap = 0; foreach (PagedIndexQueryResult partialResult in partialResults) { if (partialResult != null) { #region Update resultVer if (resultVer == 0) { resultVer = partialResult.CurrentVersion; } #endregion #region Assign IndexCap if (!indexCapSet) { indexCap = partialResult.IndexCap; indexCapSet = true; } #endregion #region Compute TotalCount totalCount += partialResult.TotalCount; #endregion #region Compute PageableItemCount if (GetPageableItemCount) { pageableItemCount += partialResult.AdditionalAvailableItemCount; } #endregion #region Merge Results if ((partialResult.ResultItemList != null && partialResult.ResultItemList.Count > 0) || (partialResult.GroupByResult != null && partialResult.GroupByResult.Count > 0)) { if (baseComparer == null) { baseComparer = new BaseComparer(partialResult.IsTagPrimarySort, partialResult.SortFieldName, partialResult.SortOrderList); completeGroupByResult = new GroupByResult(baseComparer); } if (GroupBy == null) { MergeAlgo.MergeItemLists(ref completeResultItemList, partialResult.ResultItemList, MaxMergeCount, baseComparer); } else { MergeAlgo.MergeGroupResult(ref completeGroupByResult, partialResult.GroupByResult, MaxMergeCount, baseComparer); } } #endregion #region Update IndexIdIndexHeaderMapping if (GetIndexHeaderType != GetIndexHeaderType.None && partialResult.IndexIdIndexHeaderMapping != null && partialResult.IndexIdIndexHeaderMapping.Count > 0) { foreach (KeyValuePair <byte[], IndexHeader> kvp in partialResult.IndexIdIndexHeaderMapping) { if (!completeIndexIdIndexHeaderMapping.ContainsKey(kvp.Key)) { completeIndexIdIndexHeaderMapping.Add(kvp.Key, kvp.Value); } } } #endregion #region Update exceptionInfo if (!String.IsNullOrEmpty(partialResult.ExceptionInfo)) { exceptionStringBuilder.Append(partialResult.ExceptionInfo); exceptionStringBuilder.Append(" "); } #endregion } } #region Create FinalResult finalResult = new PagedIndexQueryResult { ResultItemList = completeResultItemList, GroupByResult = completeGroupByResult, TotalCount = totalCount, AdditionalAvailableItemCount = pageableItemCount, IndexCap = indexCap, }; //Assign sort fields for use in GroupBy remote queries if (baseComparer != null) { finalResult.IsTagPrimarySort = baseComparer.IsTagPrimarySort; finalResult.SortFieldName = baseComparer.SortFieldName; finalResult.SortOrderList = baseComparer.SortOrderList; } if (GetIndexHeaderType != GetIndexHeaderType.None && completeIndexIdIndexHeaderMapping.Count > 0) { finalResult.IndexIdIndexHeaderMapping = completeIndexIdIndexHeaderMapping; } if (exceptionStringBuilder.Length > 0) { finalResult.ExceptionInfo = exceptionStringBuilder.ToString(); } #endregion #endregion } #region Determine whether client side paging is required bool performClientSidePaging; if (resultVer < PagedIndexQueryResult.CORRECT_SERVERSIDE_PAGING_LOGIC_VERSION) { // this.ClientSidePaging cannot be trusted performClientSidePaging = numClustersInGroup > 1 && PageNum != 0; } else { // this.ClientSidePaging can be trusted performClientSidePaging = ClientSidePaging && PageNum != 0; } #endregion #region Perform Paging and Update IndexIdIndexHeaderMapping if required if (performClientSidePaging && finalResult != null) { #region Paging Logic int start = (PageNum - 1) * PageSize; if (GroupBy == null) { int end = (PageNum * PageSize) < finalResult.ResultItemList.Count ? (PageNum * PageSize) : finalResult.ResultItemList.Count; List <ResultItem> filteredResultItemList = new List <ResultItem>(); for (int i = start; i < end; i++) { filteredResultItemList.Add(finalResult.ResultItemList[i]); } finalResult.ResultItemList = filteredResultItemList; } else if (finalResult.GroupByResult != null && finalResult.GroupByResult.Count > 0) { int end = (PageNum * PageSize) < finalResult.GroupByResult.Count ? (PageNum * PageSize) : finalResult.GroupByResult.Count; GroupByResult filteredGroupByResult = new GroupByResult(baseComparer); for (int i = start; i < end; i++) { filteredGroupByResult.Add(finalResult.GroupByResult[i].CompositeKey, finalResult.GroupByResult[i]); } finalResult.GroupByResult = filteredGroupByResult; } #endregion #region Update IndexIdIndexHeaderMapping to only include metadata relevant after paging if (partialResults.Count != 1 && GetIndexHeaderType == GetIndexHeaderType.ResultItemsIndexIds && completeIndexIdIndexHeaderMapping.Count > 0) { Dictionary <byte[] /*IndexId*/, IndexHeader /*IndexHeader*/> filteredIndexIdIndexHeaderMapping = new Dictionary <byte[], IndexHeader>(byteArrayEqualityComparer); if (GroupBy == null) { foreach (ResultItem resultItem in finalResult.ResultItemList) { if (!filteredIndexIdIndexHeaderMapping.ContainsKey(resultItem.IndexId)) { filteredIndexIdIndexHeaderMapping.Add(resultItem.IndexId, completeIndexIdIndexHeaderMapping[resultItem.IndexId]); } } } else if (finalResult.GroupByResult != null && finalResult.GroupByResult.Count > 0) { foreach (ResultItemBag resultItemBag in finalResult.GroupByResult) { for (int i = 0; i < resultItemBag.Count; i++) { ResultItem resultItem = resultItemBag[i]; if (!filteredIndexIdIndexHeaderMapping.ContainsKey(resultItem.IndexId)) { filteredIndexIdIndexHeaderMapping.Add(resultItem.IndexId, completeIndexIdIndexHeaderMapping[resultItem.IndexId]); } } } } finalResult.IndexIdIndexHeaderMapping = filteredIndexIdIndexHeaderMapping.Count > 0 ? filteredIndexIdIndexHeaderMapping : null; } #endregion } #endregion return(finalResult); }
public override SpanQueryResult MergeResults(IList <SpanQueryResult> partialResults) { SpanQueryResult finalResult = default(SpanQueryResult); if (partialResults == null || partialResults.Count == 0) { return(finalResult); } // We have partialResults to process ByteArrayEqualityComparer byteArrayEqualityComparer = new ByteArrayEqualityComparer(); BaseComparer baseComparer = null; Dictionary <byte[] /*IndexId*/, IndexHeader /*IndexHeader*/> completeIndexIdIndexHeaderMapping = new Dictionary <byte[], IndexHeader>(byteArrayEqualityComparer); if (partialResults.Count == 1) { #region Just one cluster was targeted, so no need to merge anything finalResult = partialResults[0]; #endregion } else { #region More than one clusters was targeted List <ResultItem> completeResultItemList = new List <ResultItem>(); GroupByResult completeGroupByResult = new GroupByResult(null); int totalCount = 0; int additionalAvailableItemCount = 0; StringBuilder exceptionStringBuilder = new StringBuilder(); bool indexCapSet = false; int indexCap = 0; foreach (SpanQueryResult partialResult in partialResults) { if (partialResult != null) { #region Compute TotalCount totalCount += partialResult.TotalCount; #endregion #region Assign IndexCap if (!indexCapSet) { indexCap = partialResult.IndexCap; indexCapSet = true; } #endregion #region Compute PageableItemCount if (GetAdditionalAvailableItemCount) { additionalAvailableItemCount += partialResult.AdditionalAvailableItemCount; } #endregion #region Merge Results if ((partialResult.ResultItemList != null && partialResult.ResultItemList.Count > 0) || (partialResult.GroupByResult != null && partialResult.GroupByResult.Count > 0)) { if (baseComparer == null) { baseComparer = new BaseComparer(partialResult.IsTagPrimarySort, partialResult.SortFieldName, partialResult.SortOrderList); completeGroupByResult = new GroupByResult(baseComparer); } if (GroupBy == null) { MergeAlgo.MergeItemLists(ref completeResultItemList, partialResult.ResultItemList, MaxMergeCount, baseComparer); } else { MergeAlgo.MergeGroupResult(ref completeGroupByResult, partialResult.GroupByResult, MaxMergeCount, baseComparer); } } #endregion #region Update IndexIdIndexHeaderMapping if (GetIndexHeaderType != GetIndexHeaderType.None && partialResult.IndexIdIndexHeaderMapping != null && partialResult.IndexIdIndexHeaderMapping.Count > 0) { foreach (KeyValuePair <byte[], IndexHeader> kvp in partialResult.IndexIdIndexHeaderMapping) { if (!completeIndexIdIndexHeaderMapping.ContainsKey(kvp.Key)) { completeIndexIdIndexHeaderMapping.Add(kvp.Key, kvp.Value); } } } #endregion #region Update exceptionInfo if (!String.IsNullOrEmpty(partialResult.ExceptionInfo)) { exceptionStringBuilder.Append(partialResult.ExceptionInfo); exceptionStringBuilder.Append(" "); } #endregion } } #region Create FinalResult finalResult = new SpanQueryResult { ResultItemList = completeResultItemList, GroupByResult = completeGroupByResult, TotalCount = totalCount, AdditionalAvailableItemCount = additionalAvailableItemCount, IndexCap = indexCap }; //Assign sort fields for use in GroupBy remote queries if (baseComparer != null) { finalResult.IsTagPrimarySort = baseComparer.IsTagPrimarySort; finalResult.SortFieldName = baseComparer.SortFieldName; finalResult.SortOrderList = baseComparer.SortOrderList; } if (GetIndexHeaderType != GetIndexHeaderType.None && completeIndexIdIndexHeaderMapping.Count > 0) { finalResult.IndexIdIndexHeaderMapping = completeIndexIdIndexHeaderMapping; } if (exceptionStringBuilder.Length > 0) { finalResult.ExceptionInfo = exceptionStringBuilder.ToString(); } #endregion #endregion } #region Spanning and Update IndexIdIndexHeaderMapping if required if (ClientSideSubsetProcessingRequired && Span != 0 && finalResult != null) { #region Spanning if (GroupBy == null) { List <ResultItem> filteredResultItemList = new List <ResultItem>(); if (finalResult.ResultItemList.Count >= Offset) { for (int i = Offset - 1; i < finalResult.ResultItemList.Count && filteredResultItemList.Count < Span; i++) { filteredResultItemList.Add(finalResult.ResultItemList[i]); } } finalResult.ResultItemList = filteredResultItemList; } else if (finalResult.GroupByResult != null && finalResult.GroupByResult.Count > 0) { GroupByResult filteredGroupByResult = new GroupByResult(baseComparer); if (finalResult.GroupByResult.Count >= Offset) { for (int i = Offset - 1; i < finalResult.GroupByResult.Count && filteredGroupByResult.Count < Span; i++) { filteredGroupByResult.Add(finalResult.GroupByResult[i].CompositeKey, finalResult.GroupByResult[i]); } } finalResult.GroupByResult = filteredGroupByResult; } #endregion #region Update IndexIdIndexHeaderMapping to only include metadata relevant after paging if (partialResults.Count != 1 && GetIndexHeaderType == GetIndexHeaderType.ResultItemsIndexIds && completeIndexIdIndexHeaderMapping.Count > 0) { Dictionary <byte[] /*IndexId*/, IndexHeader /*IndexHeader*/> filteredIndexIdIndexHeaderMapping = new Dictionary <byte[], IndexHeader>(byteArrayEqualityComparer); if (GroupBy == null) { foreach (ResultItem resultItem in finalResult.ResultItemList) { if (!filteredIndexIdIndexHeaderMapping.ContainsKey(resultItem.IndexId)) { filteredIndexIdIndexHeaderMapping.Add(resultItem.IndexId, completeIndexIdIndexHeaderMapping[resultItem.IndexId]); } } } else if (finalResult.GroupByResult != null && finalResult.GroupByResult.Count > 0) { foreach (ResultItemBag resultItemBag in finalResult.GroupByResult) { for (int i = 0; i < resultItemBag.Count; i++) { ResultItem resultItem = resultItemBag[i]; if (!filteredIndexIdIndexHeaderMapping.ContainsKey(resultItem.IndexId)) { filteredIndexIdIndexHeaderMapping.Add(resultItem.IndexId, completeIndexIdIndexHeaderMapping[resultItem.IndexId]); } } } } finalResult.IndexIdIndexHeaderMapping = filteredIndexIdIndexHeaderMapping.Count > 0 ? filteredIndexIdIndexHeaderMapping : null; } #endregion } #endregion return(finalResult); }
public override PagedIndexQueryResult MergeResults(IList <PagedIndexQueryResult> partialResults) { PagedIndexQueryResult finalResult = default(PagedIndexQueryResult); if (partialResults == null || partialResults.Count == 0) { return(finalResult); } // We have partialResults to process ByteArrayEqualityComparer byteArrayEqualityComparer = new ByteArrayEqualityComparer(); Dictionary <byte[] /*IndexId*/, IndexHeader /*IndexHeader*/> completeIndexIdIndexHeaderMapping = new Dictionary <byte[], IndexHeader>(byteArrayEqualityComparer); // resultVer required to determine if server is correctly performing paging logic int resultVer = 0; if (partialResults.Count == 1) { #region Just one cluster was targeted, so no need to merge anything finalResult = partialResults[0]; if (finalResult != null) { resultVer = finalResult.CurrentVersion; } #endregion } else { #region More than one clusters was targeted List <ResultItem> completeResultItemList = new List <ResultItem>(); BaseComparer baseComparer; int totalCount = 0; int pageableItemCount = 0; foreach (PagedIndexQueryResult partialResult in partialResults) { if (partialResult != null) { #region Update resultVer if (resultVer == 0) { resultVer = partialResult.CurrentVersion; } #endregion #region Compute TotalCount totalCount += partialResult.TotalCount; #endregion #region Compute PageableItemCount if (GetPageableItemCount) { pageableItemCount += partialResult.AdditionalAvailableItemCount; } #endregion #region Merge Results if (partialResult.ResultItemList != null && partialResult.ResultItemList.Count > 0) { baseComparer = new BaseComparer(partialResult.IsTagPrimarySort, partialResult.SortFieldName, partialResult.SortOrderList); MergeAlgo.MergeItemLists(ref completeResultItemList, partialResult.ResultItemList, MaxMergeCount, baseComparer); } #endregion #region Update IndexIdIndexHeaderMapping if (GetIndexHeaderType != GetIndexHeaderType.None && partialResult.IndexIdIndexHeaderMapping != null && partialResult.IndexIdIndexHeaderMapping.Count > 0) { foreach (KeyValuePair <byte[], IndexHeader> kvp in partialResult.IndexIdIndexHeaderMapping) { if (!completeIndexIdIndexHeaderMapping.ContainsKey(kvp.Key)) { completeIndexIdIndexHeaderMapping.Add(kvp.Key, kvp.Value); } } } #endregion } } #region Create FinalResult finalResult = new PagedIndexQueryResult { ResultItemList = completeResultItemList, TotalCount = totalCount, AdditionalAvailableItemCount = pageableItemCount, }; if (GetIndexHeaderType != GetIndexHeaderType.None && completeIndexIdIndexHeaderMapping.Count > 0) { finalResult.IndexIdIndexHeaderMapping = completeIndexIdIndexHeaderMapping; } #endregion #endregion } #region Determine whether client side paging is required bool performClientSidePaging; if (resultVer < PagedIndexQueryResult.CORRECT_SERVERSIDE_PAGING_LOGIC_VERSION) { // this.ClientSidePaging cannot be trusted performClientSidePaging = numClustersInGroup > 1 && PageNum != 0; } else { // this.ClientSidePaging can be trusted performClientSidePaging = ClientSidePaging && PageNum != 0; } #endregion #region Perform Paging and Update IndexIdIndexHeaderMapping if required if (performClientSidePaging && finalResult != null) { #region Paging Logic int start = (PageNum - 1) * PageSize; int end = (PageNum * PageSize) < finalResult.ResultItemList.Count ? (PageNum * PageSize) : finalResult.ResultItemList.Count; List <ResultItem> filteredResultItemList = new List <ResultItem>(); for (int i = start; i < end; i++) { filteredResultItemList.Add(finalResult.ResultItemList[i]); } finalResult.ResultItemList = filteredResultItemList; #endregion #region Update IndexIdIndexHeaderMapping to only include metadata relevant after paging if (partialResults.Count != 1 && GetIndexHeaderType == GetIndexHeaderType.ResultItemsIndexIds && completeIndexIdIndexHeaderMapping.Count > 0) { Dictionary <byte[] /*IndexId*/, IndexHeader /*IndexHeader*/> filteredIndexIdIndexHeaderMapping = new Dictionary <byte[], IndexHeader>(byteArrayEqualityComparer); foreach (ResultItem resultItem in finalResult.ResultItemList) { if (!filteredIndexIdIndexHeaderMapping.ContainsKey(resultItem.IndexId)) { filteredIndexIdIndexHeaderMapping.Add(resultItem.IndexId, completeIndexIdIndexHeaderMapping[resultItem.IndexId]); } } finalResult.IndexIdIndexHeaderMapping = filteredIndexIdIndexHeaderMapping.Count > 0 ? filteredIndexIdIndexHeaderMapping : null; } #endregion } #endregion return(finalResult); }
public TQueryResult MergeResults(IList <TQueryResult> partialResults) { TQueryResult completeResult = null; if (partialResults != null && partialResults.Count > 0) { if (partialResults.Count == 1) { // No need to merge anything completeResult = partialResults[0]; } else { completeResult = new TQueryResult(); StringBuilder exceptionStringBuilder = new StringBuilder(); #region Merge partialResults into completeResultList ByteArrayEqualityComparer byteArrayEqualityComparer = new ByteArrayEqualityComparer(); Dictionary <byte[] /*IndexId*/, IndexHeader /*IndexHeader*/> completeIndexIdIndexHeaderMapping = new Dictionary <byte[], IndexHeader>(byteArrayEqualityComparer); for (int i = 0; i < partialResults.Count; i++) { TQueryResult partialResult = partialResults[i]; if (partialResult != null && partialResult.ResultItemList != null && partialResult.ResultItemList.Count > 0) { if (completeResult.ResultItemList == null || completeResult.ResultItemList.Count == 0) { completeResult = partialResult; } else { IntersectionAlgo.Intersect( partialResult.IsTagPrimarySort, partialResult.SortFieldName, partialResult.LocalIdentityTagNames, partialResult.SortOrderList, completeResult, partialResult, MaxResultItems, i == partialResults.Count - 1 ? true : false); if (completeResult.ResultItemList == null || completeResult.ResultItemList.Count < 1) { completeIndexIdIndexHeaderMapping = null; break; } } if (GetIndexHeader && partialResult.IndexIdIndexHeaderMapping != null) { foreach ( KeyValuePair <byte[], IndexHeader> kvp in partialResult.IndexIdIndexHeaderMapping) { completeIndexIdIndexHeaderMapping.Add(kvp.Key, kvp.Value); } } } else { // Unable to fetch one of the indexes. Stop Interestion !! completeResult.ResultItemList = null; completeIndexIdIndexHeaderMapping = null; if ((partialResult != null) && (!String.IsNullOrEmpty(partialResult.ExceptionInfo))) { exceptionStringBuilder.Append(partialResult.ExceptionInfo); exceptionStringBuilder.Append(" "); } break; } } #region Create final result completeResult.IndexIdIndexHeaderMapping = completeIndexIdIndexHeaderMapping; if (exceptionStringBuilder.Length > 0) { completeResult.ExceptionInfo = exceptionStringBuilder.ToString(); } #endregion #endregion } } return(completeResult); }
public TQueryResult MergeResults(IList <TQueryResult> partialResults) { TQueryResult completeResult = null; if (partialResults != null && partialResults.Count > 0) { if (partialResults.Count == 1) { // No need to merge anything completeResult = partialResults[0]; } else { completeResult = new TQueryResult(); #region Merge partialResults into completeResultList ByteArrayEqualityComparer byteArrayEqualityComparer = new ByteArrayEqualityComparer(); Dictionary <byte[] /*IndexId*/, IndexHeader /*IndexHeader*/> completeIndexIdIndexHeaderMapping = new Dictionary <byte[], IndexHeader>(byteArrayEqualityComparer); foreach (TQueryResult partialResult in partialResults) { if (partialResult != null && partialResult.ResultItemList != null && partialResult.ResultItemList.Count > 0) { if (completeResult.ResultItemList == null || completeResult.ResultItemList.Count == 0) { completeResult = partialResult; } else { IntersectionAlgo.Intersect( partialResult.IsTagPrimarySort, partialResult.SortFieldName, partialResult.LocalIdentityTagNames, partialResult.SortOrderList, completeResult, partialResult); if (completeResult.ResultItemList == null || completeResult.ResultItemList.Count < 1) { completeIndexIdIndexHeaderMapping = null; break; } } if (getIndexHeader && partialResult.IndexIdIndexHeaderMapping != null) { foreach (KeyValuePair <byte[], IndexHeader> kvp in partialResult.IndexIdIndexHeaderMapping) { completeIndexIdIndexHeaderMapping.Add(kvp.Key, kvp.Value); } } } else { // Unable to fetch one of the indexes. Stop Interestion !! completeResult.ResultItemList = null; completeIndexIdIndexHeaderMapping = null; break; } } #region Create final result completeResult.IndexIdIndexHeaderMapping = completeIndexIdIndexHeaderMapping; #endregion #endregion } } return(completeResult); }