public async Task <T> GetById(int id)
{
IEnumerable <Event> events;
var memento = await _storage.GetMemento <BaseMemento>(id).ConfigureAwait(false);
if (memento != null)
{
var list = await _storage.GetEvents(id).ConfigureAwait(false);
events = list.Where(e => e.Version >= memento.Version);
}
else
{
events = await _storage.GetEvents(id).ConfigureAwait(false);
}
var obj = new T();
if (memento != null)
{
((IOriginator)obj).SetMemento(memento);
}
await Task.Run(() => obj.LoadsFromHistory(events)).ConfigureAwait(false);
return(obj);
}
public T GetById(Guid id)
{
IEnumerable <Event> events;
var memento = _eventStorage.GetMemento <BaseMemento>(id);
if (memento != null)
{
events = _eventStorage.GetEvents(id).Where(e => e.Version >= memento.Version);
}
else
{
events = _eventStorage.GetEvents(id);
}
var obj = new T();
if (memento != null)
{
((IOriginator)obj).SetMemento(memento);
}
obj.LoadsFromHistory(events);
return(obj);
}
public T GetById(Guid id)
{
//获取该记录的所有缓存事件
IEnumerable <Event> events;
var obj = new T();
//获取该记录的更改快照
var memento = _eventStorage.GetMemento <BaseMemento>(id);
if (memento != null)
{
//获取该记录最后一次快照之后的更改，避免加载过多历史更改
events = _eventStorage.GetEvents(id).Where(x => x.Version >= memento.Version);
//从快照恢复
((IOriginator)obj).SetMemento(memento);
}
else
{
//获取所有历史更改记录
events = _eventStorage.GetEvents(id);
}
//重现历史更改
obj.LoadsFromHistory(events);
return(obj);
}
public TAggregateRoot GetById(Guid id)
{
IEnumerable <IEvent> events;
var memento = _eventStorage.GetMemento <Memento>(id);
if (memento != null)
{
events = _eventStorage.GetEvents(id).Where(e => e.Version >= memento.Version);
}
else
{
events = _eventStorage.GetEvents(id);
}
var instance = new TAggregateRoot();
if (memento != null)
{
((IOriginator)instance).SetMemento(memento);
}
instance.LoadDataFromHistories(events);
return(instance);
}
public T GetById(Guid id)
{
IEnumerable <Event> events;
if (_storage == null)
{
return(new T());
}
var memento = _storage.GetMemento <BaseMemento>(id);
events = memento != null
? _storage.GetEvents(id).Where(p => p.Version >= memento.Version)
: _storage.GetEvents(id);
var obj = new T();
if (memento != null)
{
((IOriginator)obj).SetMemento(memento);
}
obj.LoadsFromHistory(events);
return(obj);
}