/// <summary>
/// Applies the grouping.
/// </summary>
/// <param name="internalItem">The internal item.</param>
internal void ApplyGroupBy(InternalItem internalItem)
{
ResultItem resultItem = new ResultItem(InDeserializationContext.IndexId,
internalItem.ItemId,
null,
InternalItemAdapter.ConvertToTagDictionary(internalItem.TagList, InDeserializationContext));
byte[] compositeKey;
//Check if GroupBy needs to be applied
if (String.IsNullOrEmpty(InDeserializationContext.GroupBy.FieldName))
{
compositeKey = GetCompositeKey(internalItem,
InDeserializationContext.GroupBy.GroupByFieldNameList);
}
else
{
byte[] fieldValue;
if (String.Compare(InDeserializationContext.GroupBy.FieldName, "ItemId", true) == 0)
{
fieldValue = internalItem.ItemId;
}
else
{
internalItem.TryGetTagValue(InDeserializationContext.GroupBy.FieldName, out fieldValue);
}
compositeKey = fieldValue != null &&
InDeserializationContext.GroupBy.FieldValueSet.Contains(fieldValue)
? GetCompositeKey(internalItem,
InDeserializationContext.GroupBy.GroupByFieldNameList)
: GetCompositeKey(internalItem,
InDeserializationContext.GroupBy.NonGroupByFieldNameList);
}
GroupByResult.Add(compositeKey, resultItem);
}
/// <summary>
/// Searches the specified search item.
/// </summary>
/// <param name="searchItem">The search item.</param>
/// <returns></returns>
internal int Search(IndexItem searchItem)
{
return(InDeserializationContext.PrimarySortInfo.IsTag ?
InternalItemList.LinearSearch(InternalItemAdapter.ConvertToInternalItem(searchItem), InDeserializationContext.LocalIdentityTagNames) :
InternalItemList.BinarySearchItem(InternalItemAdapter.ConvertToInternalItem(searchItem),
InDeserializationContext.PrimarySortInfo.IsTag,
InDeserializationContext.PrimarySortInfo.FieldName,
InDeserializationContext.PrimarySortInfo.SortOrderList, InDeserializationContext.LocalIdentityTagNames));
}
/// <summary>
/// Gets the result item list.
/// </summary>
/// <param name="cacheIndexInternal">The cache index internal.</param>
/// <param name="itemPositionList">The item position list.</param>
/// <returns>List of ResultItems</returns>
internal static List <ResultItem> GetResultItemList(CacheIndexInternal cacheIndexInternal, IEnumerable <int> itemPositionList)
{
List <ResultItem> resultItemList = new List <ResultItem>();
foreach (int itemPosition in itemPositionList)
{
resultItemList.Add(new ResultItem(cacheIndexInternal.InDeserializationContext.IndexId,
cacheIndexInternal.GetItem(itemPosition).ItemId,
null,
InternalItemAdapter.ConvertToTagDictionary(cacheIndexInternal.GetItem(itemPosition).TagList, cacheIndexInternal.InDeserializationContext)));
}
return(resultItemList);
}
/// <summary>
/// Gets the index data item list.
/// </summary>
/// <param name="cacheIndexInternal">The cache index internal.</param>
/// <param name="offset">The offset.</param>
/// <param name="itemNum">If 0 gets all items.</param>
/// <returns>List of IndexDataItems</returns>
internal static List <IndexDataItem> GetIndexDataItemList(CacheIndexInternal cacheIndexInternal, int offset, int itemNum)
{
if (itemNum == Int32.MaxValue)
{
itemNum = cacheIndexInternal.Count;
}
List <IndexDataItem> resultItemList = new List <IndexDataItem>(itemNum);
if (cacheIndexInternal.Count >= offset)
{
for (int i = offset - 1; i < cacheIndexInternal.Count && resultItemList.Count < itemNum; i++)
{
resultItemList.Add(new IndexDataItem(cacheIndexInternal.GetItem(i).ItemId,
InternalItemAdapter.ConvertToTagDictionary(cacheIndexInternal.GetItem(i).TagList, cacheIndexInternal.InDeserializationContext)));
}
}
return(resultItemList);
}
/// <summary>
/// Gets the insert position.
/// </summary>
/// <param name="searchItem">The search item.</param>
/// <param name="sortBy">The sort by.</param>
/// <param name="comparer">The comparer.</param>
/// <returns>InsertPosition</returns>
internal int GetInsertPosition(IndexItem searchItem, SortBy sortBy, InternalItemComparer comparer)
{
return(InternalItemList.GetInsertPosition(InternalItemAdapter.ConvertToInternalItem(searchItem), comparer, sortBy));
}