private MultiTaggedReadResult <TEntry, TMeasureType> Merge(
TMeasureType measureType,
IFieldCalculator[] calculators,
Sort sort,
Dictionary <TagCollection, List <TaggedReadResult <TEntry, TMeasureType> > > collectionsByTags)
{
// construct final result from previously grouped results
var finalResults = new Dictionary <TagCollection, TaggedReadResult <TEntry, TMeasureType> >();
foreach (var collections in collectionsByTags)
{
List <TEntry> newCollection;
if (collections.Value.Count == 1)
{
newCollection = collections.Value[0].Entries;
}
else
{
newCollection = MergeSort.Sort(
collections: collections.Value.Select(x => x.Entries),
comparer: EntryComparer.GetComparer <TKey, TEntry>(sort),
resolveConflict: x => Aggregate(x, calculators));
}
// need tag information RIGHT HERE
var tagCollection = collections.Key;
finalResults.Add(tagCollection, new TaggedReadResult <TEntry, TMeasureType>(tagCollection, sort, newCollection));
}
var finalResult = new MultiTaggedReadResult <TEntry, TMeasureType>(measureType, finalResults);
return(finalResult);
}
private async Task StoreForId(TKey id, List <TEntry> newEntries, DateTime from, DateTime to)
{
// retrieve existing entries for this period
var retrievals = await RetrieveRangeForId(id, from, to, Sort.Descending).ConfigureAwait(false);
var oldEntities = retrievals.ToDictionary(x => x.RowKey);
// merge results
var oldEntries = retrievals.SelectMany(x => x.GetEntries <TKey, TEntry>(Sort.Descending)).ToList();
var mergedEntries = MergeSort.Sort(
collections: new IEnumerable <TEntry>[] { newEntries, oldEntries },
comparer: EntryComparer.GetComparer <TKey, TEntry>(Sort.Descending),
resolveConflict: x => x.First()); // prioritize the item from the first collection (new one)
// create new entities
var newEntities = CreateTableEntitiesFor(id, mergedEntries).ToDictionary(x => x.RowKey);
var operations = CreateAtsOperations(newEntities, oldEntities);
await ExecuteAtsOperatioons(operations).ConfigureAwait(false);
}
public void Sort(Sort sort)
{
_entries.Sort(EntryComparer.GetComparer <TKey, TEntry>(sort));
}