private void Delete(DocumentsOperationContext context, Slice lowerId, Slice idSlice, string id, CollectionName collectionName,
BlittableJsonReaderObject deleteRevisionDocument, string changeVector,
long lastModifiedTicks, NonPersistentDocumentFlags nonPersistentFlags, DocumentFlags flags)
{
Debug.Assert(changeVector != null, "Change vector must be set");
if (flags.Contain(DocumentFlags.HasAttachments))
{
flags &= ~DocumentFlags.HasAttachments;
}
var configuration = GetRevisionsConfiguration(collectionName.Name, flags);
if (configuration.Disabled)
{
return;
}
var table = EnsureRevisionTableCreated(context.Transaction.InnerTransaction, collectionName);
if (configuration.PurgeOnDelete)
{
using (GetKeyPrefix(context, lowerId, out Slice prefixSlice))
{
DeleteRevisions(context, table, prefixSlice, collectionName, long.MaxValue, null, changeVector, lastModifiedTicks);
DeleteCountOfRevisions(context, prefixSlice);
}
return;
}
var fromReplication = (nonPersistentFlags & NonPersistentDocumentFlags.FromReplication) == NonPersistentDocumentFlags.FromReplication;
if (fromReplication)
{
void DeleteFromRevisionIfChangeVectorIsGreater()
{
TableValueReader tvr;
try
{
var hasDoc = _documentsStorage.GetTableValueReaderForDocument(context, lowerId, throwOnConflict: true, tvr: out tvr);
if (hasDoc == false)
{
return;
}
}
catch (DocumentConflictException)
{
// Do not modify the document.
return;
}
var docChangeVector = TableValueToChangeVector(context, (int)DocumentsTable.ChangeVector, ref tvr);
if (ChangeVectorUtils.GetConflictStatus(changeVector, docChangeVector) == ConflictStatus.Update)
{
_documentsStorage.Delete(context, lowerId, id, null, lastModifiedTicks, changeVector, collectionName,
nonPersistentFlags | NonPersistentDocumentFlags.FromRevision);
}
}
DeleteFromRevisionIfChangeVectorIsGreater();
}
var newEtag = _database.DocumentsStorage.GenerateNextEtag();
var newEtagSwapBytes = Bits.SwapBytes(newEtag);
using (table.Allocate(out TableValueBuilder tvb))
using (Slice.From(context.Allocator, changeVector, out var cv))
{
tvb.Add(cv.Content.Ptr, cv.Size);
tvb.Add(lowerId);
tvb.Add(SpecialChars.RecordSeparator);
tvb.Add(newEtagSwapBytes);
tvb.Add(idSlice);
tvb.Add(deleteRevisionDocument.BasePointer, deleteRevisionDocument.Size);
tvb.Add((int)(DocumentFlags.DeleteRevision | flags));
tvb.Add(newEtagSwapBytes);
tvb.Add(lastModifiedTicks);
tvb.Add(context.GetTransactionMarker());
if (flags.Contain(DocumentFlags.Resolved))
{
tvb.Add((int)DocumentFlags.Resolved);
}
else
{
tvb.Add(0);
}
tvb.Add(Bits.SwapBytes(lastModifiedTicks));
var isNew = table.Set(tvb);
if (isNew == false)
{
// It might be just an update from replication as we call this twice, both for the doc delete and for deleteRevision.
return;
}
}
DeleteOldRevisions(context, table, lowerId, collectionName, configuration, nonPersistentFlags, changeVector, lastModifiedTicks);
}
