private async Task SendNotification(PrincipalCommandBase <TResponse> request, TResponse response, CancellationToken cancellationToken)
{
var operation = request switch
{
EntityCreateCommand <TEntityModel, TResponse> _ => EntityChangeOperation.Created,
EntityDeleteCommand <TKey, TResponse> _ => EntityChangeOperation.Deleted,
_ => EntityChangeOperation.Updated
};
var notification = new EntityChangeNotification <TResponse>(response, operation);
await _mediator.Publish(notification, cancellationToken);
}
}
public System.Threading.Tasks.Task Handle(EntityChangeNotification <TaskReadModel> notification, CancellationToken cancellationToken)
{
_logger.LogInformation("Task Changed: {id} {operation}", notification.Model?.Id, notification.Operation);
return(System.Threading.Tasks.Task.CompletedTask);
}
private void SavingChanges(object sender, EventArgs e)
{
if (_transactionPending == false)
{
var trans = Transaction.Current;
trans.TransactionCompleted += OnTransactionCompleted;
_transactionPending = true;
}
var context = (_context as IObjectContextAdapter).ObjectContext;
var deletes =
context.ObjectStateManager.GetObjectStateEntries(EntityState.Deleted)
.Where(ose => ose.IsRelationship == false)
.Select(
ose =>
new EntityChangeNotification
{
ChangeType = EntityChangeTypeEnum.Deleted,
EntityType = ObjectContext.GetObjectType(ose.Entity.GetType()),
Entity = ose.Entity,
});
var mods =
context.ObjectStateManager.GetObjectStateEntries(EntityState.Modified)
.Where(ose => ose.IsRelationship == false)
.Select(
ose =>
new EntityChangeNotification
{
ChangeType = EntityChangeTypeEnum.Modified,
EntityType = ObjectContext.GetObjectType(ose.Entity.GetType()),
Entity = ose.Entity,
DataChanged =
new List <EntityDataChanged>(
ose.GetModifiedProperties()
.Where(p => ose.IsPropertyChanged(p))
.Select(
p =>
new EntityDataChanged(
p,
ose.OriginalValues.GetValue(ose.OriginalValues.GetOrdinal(p)),
ose.CurrentValues.GetValue(ose.CurrentValues.GetOrdinal(p)))))
});
var adds =
context.ObjectStateManager.GetObjectStateEntries(EntityState.Added)
.Where(ose => ose.IsRelationship == false)
.Select(
ose =>
new EntityChangeNotification
{
ChangeType = EntityChangeTypeEnum.Added,
Entity = ose.Entity,
EntityType = ObjectContext.GetObjectType(ose.Entity.GetType()),
});
var relations =
context.ObjectStateManager.GetObjectStateEntries(
EntityState.Deleted | EntityState.Modified | EntityState.Added).Where(ose => ose.IsRelationship);
_changesInProgress = _changesInProgress.Concat(adds).Concat(mods).Concat(deletes).ToList();
foreach (var relationChange in relations)
{
if ((relationChange.UsableValues()[0] as EntityKey).IsTemporary == false)
{
var key = relationChange.UsableValues()[0] as EntityKey;
var entity = context.GetObjectByKey(key) as IEntityIdentifier;
var ecn = new EntityChangeNotification
{
ChangeType = EntityChangeTypeEnum.Modified,
EntityType = ObjectContext.GetObjectType(entity.GetType()),
Entity = entity,
};
_changesInProgress.Add(ecn);
}
if ((relationChange.UsableValues()[1] as EntityKey).IsTemporary == false)
{
var key = relationChange.UsableValues()[1] as EntityKey;
var entity = context.GetObjectByKey(key) as IEntityIdentifier;
var ecn = new EntityChangeNotification
{
ChangeType = EntityChangeTypeEnum.Modified,
EntityType = ObjectContext.GetObjectType(entity.GetType()),
Entity = entity,
};
_changesInProgress.Add(ecn);
}
}
_changesInProgress =
_changesInProgress.OrderBy(c => c.ChangeType).ThenBy(c => c.EntityType.Name).Distinct().ToList();
}