/// <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);
}