public override TryCatch <CrossPartitionState <ChangeFeedState> > Visit(ChangeFeedStartFromContinuationAndFeedRange startFromContinuationAndFeedRange)
{
ChangeFeedState state = ChangeFeedState.Continuation(CosmosString.Create(startFromContinuationAndFeedRange.Etag));
List <(FeedRangeInternal, ChangeFeedState)> rangesAndStates = new List <(FeedRangeInternal, ChangeFeedState)>()
{
(startFromContinuationAndFeedRange.FeedRange, state)
};
CrossPartitionState <ChangeFeedState> crossPartitionState = new CrossPartitionState <ChangeFeedState>(rangesAndStates);
return(TryCatch <CrossPartitionState <ChangeFeedState> > .FromResult(crossPartitionState));
}
public static ChangeFeedPartitionKeyResultSetIteratorCore BuildResultSetIterator(
string partitionKeyRangeId,
string continuationToken,
int?maxItemCount,
ContainerInternal container,
DateTime?startTime,
bool startFromBeginning)
{
FeedRangeInternal feedRange = new FeedRangePartitionKeyRange(partitionKeyRangeId);
ChangeFeedStartFrom startFrom;
if (continuationToken != null)
{
// For continuation based feed range we need to manufactor a new continuation token that has the partition key range id in it.
startFrom = new ChangeFeedStartFromContinuationAndFeedRange(continuationToken, feedRange);
}
else if (startTime.HasValue)
{
startFrom = ChangeFeedStartFrom.Time(startTime.Value, feedRange);
}
else if (startFromBeginning)
{
startFrom = ChangeFeedStartFrom.Beginning(feedRange);
}
else
{
startFrom = ChangeFeedStartFrom.Now(feedRange);
}
ChangeFeedRequestOptions requestOptions = new ChangeFeedRequestOptions()
{
PageSizeHint = maxItemCount,
};
return(new ChangeFeedPartitionKeyResultSetIteratorCore(
clientContext: container.ClientContext,
container: container,
changeFeedStartFrom: startFrom,
options: requestOptions));
}
public abstract TResult Visit(ChangeFeedStartFromContinuationAndFeedRange startFromContinuationAndFeedRange);
