public bool MoveNext()
{
Current = null;
while (_counters.MoveNext())
{
var current = _counters.Current;
if (CanMoveNextAndNotExceedLastDocumentInBatch(current.Etag, _lastProcessedDocEtagInBatch) == false)
{
return(false);
}
var doc = _docsStorage.Get(_context, current.DocumentId);
if (doc != null && current.Etag > doc.Etag)
{
Current = current;
return(true);
}
// counter has lower etag than its document - we skip it to avoid
// sending a counter of document that can not exist on the destination side
_stats.RecordChangeVector(current.ChangeVector);
_stats.RecordLastFilteredOutEtag(current.Etag, EtlItemType.Counter);
}
return(false);
}
public bool MoveNext()
{
Current = null;
while (_tombstones.MoveNext())
{
var current = _tombstones.Current;
if (current.Type == _tombstoneType)
{
if (_fromCollections == null)
{
Current = current;
return(true);
}
var tombstoneCollection = (string)current.Collection;
if (string.IsNullOrEmpty(tombstoneCollection))
{
if (_tombstoneType == Tombstone.TombstoneType.Attachment)
{
var documentId = AttachmentsStorage.ExtractDocIdAndAttachmentNameFromTombstone(_context, current.LowerId).DocId;
var document = _context.DocumentDatabase.DocumentsStorage.Get(_context, documentId);
if (document != null) // document could be deleted, no need to send DELETE of tombstone, we can filter it out
{
tombstoneCollection = _context.DocumentDatabase.DocumentsStorage.ExtractCollectionName(_context, document.Data).Name;
}
}
else
{
ThrowUnexpectedNullCollectionTombstone(_tombstoneType);
}
}
if (_fromCollections.Contains(tombstoneCollection, StringComparer.OrdinalIgnoreCase))
{
Current = current;
return(true);
}
}
_stats.RecordChangeVector(current.ChangeVector);
_stats.RecordLastFilteredOutEtag(current.Etag);
}
return(false);
}
public bool MoveNext()
{
Current = null;
while (_tombstones.MoveNext())
{
var current = _tombstones.Current;
if (current.Type == Tombstone.TombstoneType.Document)
{
Current = current;
return(true);
}
_stats.RecordChangeVector(current.ChangeVector);
_stats.RecordLastFilteredOutEtag(current.Etag);
}
return(false);
}
public bool MoveNext()
{
Current = null;
while (_counters.MoveNext())
{
var current = _counters.Current;
var doc = _docsStorage.Get(_context, current.DocumentId);
if (doc != null && current.Etag > doc.Etag)
{
Current = current;
return(true);
}
_stats.RecordChangeVector(current.ChangeVector);
_stats.RecordLastFilteredOutEtag(current.Etag, EtlItemType.Counter);
}
return(false);
}
public bool MoveNext()
{
Current = null;
while (_tombstones.MoveNext())
{
var current = _tombstones.Current;
if (_maxEtag != null)
{
switch (_tombstoneType)
{
case Tombstone.TombstoneType.Counter:
if (PreventCountersIteratingTooFarEnumerator <ExtractedItem> .CanMoveNext(current.Etag, _maxEtag.Value) == false)
{
return(false);
}
break;
default:
ThrowMaxEtagLimitNotSupported(_tombstoneType);
break;
}
}
if (current.Type == _tombstoneType)
{
if (_fromCollections == null)
{
Current = current;
return(true);
}
var tombstoneCollection = (string)current.Collection;
if (string.IsNullOrEmpty(tombstoneCollection))
{
if (_tombstoneType == Tombstone.TombstoneType.Attachment)
{
var documentId = AttachmentsStorage.ExtractDocIdAndAttachmentNameFromTombstone(_context, current.LowerId).DocId;
var document = _context.DocumentDatabase.DocumentsStorage.Get(_context, documentId);
if (document != null) // document could be deleted, no need to send DELETE of tombstone, we can filter it out
{
tombstoneCollection = _context.DocumentDatabase.DocumentsStorage.ExtractCollectionName(_context, document.Data).Name;
}
}
else
{
ThrowUnexpectedNullCollectionTombstone(_tombstoneType);
}
}
if (_fromCollections.Contains(tombstoneCollection, StringComparer.OrdinalIgnoreCase))
{
Current = current;
return(true);
}
}
var etlItemType = EtlItemType.None;
switch (current.Type)
{
case Tombstone.TombstoneType.Document:
case Tombstone.TombstoneType.Attachment:
case Tombstone.TombstoneType.Revision:
etlItemType = EtlItemType.Document;
break;
case Tombstone.TombstoneType.Counter:
etlItemType = EtlItemType.Counter;
break;
default:
ThrowFilteringTombstonesOfTypeNotSupported(current.Type);
break;
}
_stats.RecordChangeVector(current.ChangeVector);
_stats.RecordLastFilteredOutEtag(current.Etag, etlItemType);
}
return(false);
}