private IEnumerable <StorageLookupResult <TKey, List <ITypedKey <TKey, TMeasureType> >, TEntry> > LookupStorages(IEnumerable <ITypedKey <TKey, TMeasureType> > taggedIds)
{
var result = new Dictionary <StorageSelection <TKey, TEntry, IStorage <TKey, TEntry> >, StorageLookupResult <TKey, List <ITypedKey <TKey, TMeasureType> >, TEntry> >();
foreach (var id in taggedIds)
{
var storages = _storageSelector.GetStorage(id.Key, null, null);
foreach (var storage in storages)
{
StorageLookupResult <TKey, List <ITypedKey <TKey, TMeasureType> >, TEntry> existingStorage;
if (!result.TryGetValue(storage, out existingStorage))
{
existingStorage = new StorageLookupResult <TKey, List <ITypedKey <TKey, TMeasureType> >, TEntry>(storage.Storage);
existingStorage.Lookups = new List <ITypedKey <TKey, TMeasureType> >();
result.Add(storage, existingStorage);
}
existingStorage.Lookups.Add(id);
}
}
return(result.Values);
}
private async Task <ReadResult <TKey, TEntry> > ReadLatestInternal(TKey key, int count)
{
var storages = _storageSelector.GetStorage(key, null, null);
foreach (var storage in storages)
{
var rr = await storage.Storage.ReadLatestAsync(key, count);
if (rr.Entries.Count > 0)
{
return(rr);
}
}
return(new ReadResult <TKey, TEntry>(key, Sort.Descending));
}
private async Task <ReadResult <TKey, TEntry> > ReadLatestInternal(TKey key, int count)
{
var leftToRead = count;
var results = new List <ReadResult <TKey, TEntry> >();
var storages = _storageSelector.GetStorage(key, null, null);
foreach (var storage in storages)
{
var rr = await storage.Storage.ReadLatestAsync(key, leftToRead);
var read = rr.Entries.Count;
leftToRead -= read;
if (read > 0)
{
results.Add(rr);
}
if (leftToRead <= 0)
{
break;
}
}
if (results.Count == 0)
{
return(new ReadResult <TKey, TEntry>(key, Sort.Descending));
}
else if (results.Count == 1)
{
return(results[0]);
}
else
{
return(new ReadResult <TKey, TEntry>(key, Sort.Descending, results));
}
}
