/// <summary> Apply the specified event to the state. </summary>
/// <remarks> The sequence number must be greater than <see cref="Sequence"/>. </remarks>
public void Apply(uint seq, TEvent e)
{
if (seq <= Sequence)
{
throw new ArgumentException($"Event seq {seq} applied after seq {Sequence}", nameof(seq));
}
// Always update sequence, even if update fails.
Sequence = seq;
try
{
var newState = _projection.Apply(seq, e, Current);
if (newState == null)
{
throw new InvalidOperationException("Event generated a null state.");
}
Current = newState;
}
catch (Exception ex)
{
_log?.Warning($"[{Name}] error at seq {seq}", ex);
_possiblyInconsistent = true;
throw;
}
}
public void Apply(IDocumentSession session, IReadOnlyList <StreamAction> streams)
{
_inner.Apply(session, new EventPage(streams.Select(x => x.ShimForOldProjections()).ToArray()));
}
