private Task <T> load <T>(object id) where T : class
{
if (_identityMap.Has <T>(id))
{
return(Task.FromResult(_identityMap.Retrieve <T>(id)));
}
var mapping = _schema.MappingFor(typeof(T)).ToQueryableDocument();
return(AddItem(new LoadByIdHandler <T>(_schema.ResolverFor <T>(), mapping, id)));
}
public void Append(Guid stream, params object[] events)
{
if (_identityMap.Has <EventStream>(stream))
{
_identityMap.Retrieve <EventStream>(stream).AddEvents(events.Select(EventStream.ToEvent));
}
else
{
var eventStream = new EventStream(stream, events.Select(EventStream.ToEvent).ToArray(), false);
_session.Store(eventStream);
}
}
public void AppendEvents(Guid stream, params IEvent[] events)
{
if (_identityMap.Has <EventStream>(stream))
{
_identityMap.Retrieve <EventStream>(stream).AddEvents(events);
}
else
{
var eventStream = new EventStream(stream, events);
_session.Store(eventStream);
}
}
public T Resolve(IIdentityMap map, IQuerySession session, object id)
{
if (map.Has <T>(id))
{
return(map.Retrieve <T>(id));
}
var cmd = LoaderCommand(id);
cmd.AddTenancy(session.Tenant);
cmd.Connection = session.Connection;
using (var reader = cmd.ExecuteReader())
{
return(Fetch(id, reader, map));
}
}
public async Task <T> ResolveAsync(IIdentityMap map, IQuerySession session, CancellationToken token, object id)
{
if (map.Has <T>(id))
{
return(map.Retrieve <T>(id));
}
var cmd = LoaderCommand(id);
cmd.AddTenancy(session.Tenant);
cmd.Connection = session.Connection;
using (var reader = await cmd.ExecuteReaderAsync(token).ConfigureAwait(false))
{
return(await FetchAsync(id, reader, map, token).ConfigureAwait(false));
}
}
private Task <T> load <T>(object id) where T : class
{
if (_identityMap.Has <T>(id))
{
return(Task.FromResult(_identityMap.Retrieve <T>(id)));
}
var source = new TaskCompletionSource <T>();
var mapping = _schema.MappingFor(typeof(T));
var parameter = _command.AddParameter(id);
_command.AppendQuery(
$"select {mapping.SelectFields("d")} from {mapping.TableName} as d where id = :{parameter.ParameterName}");
var handler = new SingleResultReader <T>(source, _schema.StorageFor(typeof(T)), _identityMap);
addHandler(handler);
return(source.Task);
}
