protected bool IsRepeatedCommand(IAttributeValueMvoCommand command, IEventStoreAggregateId eventStoreAggregateId, IAttributeValueMvoState state)
{
bool repeated = false;
if (((IAttributeValueMvoStateProperties)state).AttributeVersion > command.AggregateVersion)
{
var lastEvent = EventStore.FindLastEvent(typeof(IAttributeValueMvoStateEvent), eventStoreAggregateId, command.AggregateVersion);
if (lastEvent != null && lastEvent.CommandId == command.CommandId)
{
repeated = true;
}
}
return(repeated);
}
protected virtual void Update(IAttributeValueMvoCommand c, Action <IAttributeValueMvoAggregate> action)
{
var aggregateId = c.AggregateId;
var state = StateRepository.Get(aggregateId, false);
var aggregate = GetAttributeValueMvoAggregate(state);
var eventStoreAggregateId = ToEventStoreAggregateId(aggregateId);
var repeated = IsRepeatedCommand(c, eventStoreAggregateId, state);
if (repeated)
{
return;
}
aggregate.ThrowOnInvalidStateTransition(c);
action(aggregate);
EventStore.AppendEvents(eventStoreAggregateId, ((IAttributeValueMvoStateProperties)state).AttributeVersion, aggregate.Changes, () => { StateRepository.Save(state); });
}
protected virtual void Update(IAttributeValueMvoCommand c, Action <IAttributeValueMvoAggregate> action)
{
var aggregateId = c.AggregateId;
var state = StateRepository.Get(aggregateId, false);
var aggregate = GetAttributeValueMvoAggregate(state);
var eventStoreAggregateId = ToEventStoreAggregateId(aggregateId);
var repeated = IsRepeatedCommand(c, eventStoreAggregateId, state);
if (repeated)
{
return;
}
aggregate.ThrowOnInvalidStateTransition(c);
action(aggregate);
Persist(eventStoreAggregateId, aggregate, state);
}
private static bool IsCommandCreate(IAttributeValueMvoCommand c)
{
return(c.AttributeVersion == AttributeValueMvoState.VersionZero);
}
