VersionedEventSource GetVersionFromCommits(EventSourceKey eventSource)
{
var builder = Builders <BsonDocument> .Sort;
var sort = builder.Ascending(Constants.VERSION);
var commitDoc = _config.Commits.Find(eventSource.ToFilter()).Sort(sort).Limit(1).ToList().SingleOrDefault();
if (commitDoc == null)
{
return(new VersionedEventSource(EventSourceVersion.NoVersion, eventSource));
}
return(commitDoc.ToCommittedEventStream().Source);
}
/// <inheritdoc />
public EventSourceVersion GetCurrentVersionFor(EventSourceKey eventSource)
{
var builder = Builders <BsonDocument> .Sort;
var filter = eventSource.ToFilter();
var sort = builder.Descending(VersionConstants.COMMIT);
var version = _config.Commits.Find <BsonDocument>(filter).Sort(sort).Limit(1).FirstOrDefault();
if (version == null)
{
return(EventSourceVersion.NoVersion);
}
return(version.ToEventSourceVersion());
}
/// <inheritdoc />
public Commits FetchFrom(EventSourceKey eventSourceKey, CommitVersion commitVersion)
{
return(FindCommitsWithSorting(eventSourceKey.ToFilter() & commitVersion.ToFilter()));
}
/// <inheritdoc />
public Commits Fetch(EventSourceKey eventSourceKey)
{
return(FindCommitsWithSorting(eventSourceKey.ToFilter()));
}