public async Task Store <T>(T aggregate)
where T : Aggregate
{
if (aggregate == null)
{
throw new ArgumentNullException(nameof(aggregate));
}
if (aggregate.Changes.Count == 0)
{
return;
}
var stream = StreamName.For <T>(aggregate.GetId());
var expectedVersion = new ExpectedStreamVersion(aggregate.Version);
await _eventStore.AppendEvents(stream, expectedVersion, aggregate.Changes.Select(ToStreamEvent).ToArray());
JsonStreamEvent ToStreamEvent(object evt)
=> new(TypeMap.GetTypeName(evt), _serializer.Serialize(evt));
}
/// <inheritdoc /> public byte[]? Metadata(IMetadataFactory factory, IJsonEventSerializer serializer) => _metadata == null ? null : serializer.Serialize(_metadata);
/// <inheritdoc /> public byte[] Data(IJsonEventSerializer serializer) => serializer.Serialize(_data);
public byte[]? MetadataFor <T>(Guid id, EventType <T> type, T data, IJsonEventSerializer serializer)
{
return(serializer.Serialize(new { Username }));
}