public void RemoveAllBefore(string name, Etag etag)
{
var listsByName = tableStorage.Lists.GetIndex(Tables.Lists.Indices.ByName);
var listsByNameAndKey = tableStorage.Lists.GetIndex(Tables.Lists.Indices.ByNameAndKey);
var nameKey = CreateKey(name);
var nameKeySlice = (Slice)nameKey;
var iterator = listsByName.MultiRead(Snapshot, nameKeySlice);
try
{
if (!iterator.Seek(Slice.BeforeAllKeys))
{
return;
}
bool skipMoveNext;
do
{
skipMoveNext = false;
var currentEtag = Etag.Parse(iterator.CurrentKey.ToString());
if (currentEtag.CompareTo(etag) > 0)
{
break;
}
ushort version;
var value = LoadJson(tableStorage.Lists, iterator.CurrentKey, writeBatch.Value, out version);
var key = value.Value <string>("key");
var etagSlice = (Slice)currentEtag.ToString();
tableStorage.Lists.Delete(writeBatch.Value, etagSlice);
listsByName.MultiDelete(writeBatch.Value, nameKeySlice, etagSlice);
listsByNameAndKey.Delete(writeBatch.Value, (Slice)AppendToKey(nameKey, key));
if (generalStorageActions.MaybePulseTransaction(iterator))
{
iterator = listsByName.MultiRead(Snapshot, nameKeySlice);
if (!iterator.Seek(Slice.BeforeAllKeys))
{
break;
}
skipMoveNext = true;
}
} while (skipMoveNext || iterator.MoveNext());
}
finally
{
if (iterator != null)
{
iterator.Dispose();
}
}
}
public void RemoveAllOlderThan(string name, DateTime dateTime)
{
var listsByName = tableStorage.Lists.GetIndex(Tables.Lists.Indices.ByName);
var listsByNameAndKey = tableStorage.Lists.GetIndex(Tables.Lists.Indices.ByNameAndKey);
var nameKey = CreateKey(name);
var nameKeySlice = (Slice)nameKey;
using (var iterator = listsByName.MultiRead(Snapshot, nameKeySlice))
{
if (!iterator.Seek(Slice.BeforeAllKeys))
{
return;
}
do
{
ushort version;
var value = LoadJson(tableStorage.Lists, iterator.CurrentKey, writeBatch.Value, out version);
var createdAt = value.Value <DateTime>("createdAt");
if (createdAt > dateTime)
{
break;
}
var key = value.Value <string>("key");
var etag = Etag.Parse(iterator.CurrentKey.ToString());
var etagSlice = (Slice)etag.ToString();
tableStorage.Lists.Delete(writeBatch.Value, etagSlice);
listsByName.MultiDelete(writeBatch.Value, nameKeySlice, etagSlice);
listsByNameAndKey.Delete(writeBatch.Value, AppendToKey(nameKey, key));
generalStorageActions.MaybePulseTransaction();
}while (iterator.MoveNext());
}
}
private void RemoveDocumentReference(Func <IIterator> createIterator, bool tryPulseTransaction, CancellationToken token)
{
var iterator = createIterator();
try
{
if (iterator.Seek(Slice.BeforeAllKeys) == false)
{
return;
}
var documentReferencesByKey = tableStorage.DocumentReferences.GetIndex(Tables.DocumentReferences.Indices.ByKey);
var documentReferencesByRef = tableStorage.DocumentReferences.GetIndex(Tables.DocumentReferences.Indices.ByRef);
var documentReferencesByView = tableStorage.DocumentReferences.GetIndex(Tables.DocumentReferences.Indices.ByView);
var documentReferencesByViewAndKey = tableStorage.DocumentReferences.GetIndex(Tables.DocumentReferences.Indices.ByViewAndKey);
bool skipMoveNext;
do
{
skipMoveNext = false;
// TODO: Check if we can avoid the clone.
var id = iterator.CurrentKey.Clone();
ushort version;
var value = LoadStruct(tableStorage.DocumentReferences, id, writeBatch.Value, out version);
if (value == null)
{
continue;
}
var reference = value.ReadString(DocumentReferencesFields.Reference);
var view = value.ReadInt(DocumentReferencesFields.IndexId).ToString(CultureInfo.InvariantCulture);
var key = value.ReadString(DocumentReferencesFields.Key);
var viewKey = CreateKey(view);
tableStorage.DocumentReferences.Delete(writeBatch.Value, id);
documentReferencesByKey.MultiDelete(writeBatch.Value, (Slice)CreateKey(key), id);
documentReferencesByRef.MultiDelete(writeBatch.Value, (Slice)CreateKey(reference), id);
documentReferencesByView.MultiDelete(writeBatch.Value, (Slice)viewKey, id);
documentReferencesByViewAndKey.MultiDelete(writeBatch.Value, (Slice)AppendToKey(viewKey, key), id);
if (tryPulseTransaction)
{
if (generalStorageActions.MaybePulseTransaction(iterator))
{
iterator = createIterator();
if (iterator.Seek(Slice.BeforeAllKeys) == false)
{
break;
}
skipMoveNext = true;
}
}
}while ((skipMoveNext || iterator.MoveNext()) && token.IsCancellationRequested == false);
}
finally
{
if (iterator != null)
{
iterator.Dispose();
}
}
}
