public void Can_create_with_ModelCreatedEntry_in_journal()
{
JournalAppender.Create(0, _commandStore).AppendModelCreated(typeof(ImmutableModel));
var entries = _commandStore.GetJournalEntries().ToArray();
Assert.AreEqual(1, entries.Length);
var firstEntry = entries[0] as JournalEntry <ModelCreated>;
Assert.NotNull(firstEntry);
Assert.AreEqual(firstEntry.Item.Type, typeof(ImmutableModel));
Assert.AreEqual(0, firstEntry.Id);
}
public Model LoadModel(Type modelType = null)
{
Model model = null;
//Try to load from the most recent snapshot
var snapshotInfo = _snapshotStore.Snapshots.LastOrDefault();
if (snapshotInfo != null)
{
model = _snapshotStore.LoadSnapshot(snapshotInfo);
model.SnapshotRestored();
}
//If no snapshot present see if the first journal entry is of type ModelCreated
if (model == null)
{
var firstJournalEntry = _commandStore.GetJournalEntries()
.Take(1)
.OfType <JournalEntry <ModelCreated> >()
.SingleOrDefault();
if (firstJournalEntry != null)
{
modelType = firstJournalEntry.Item.Type;
}
if (modelType == null)
{
throw new InvalidOperationException("No model type present");
}
model = (Model)Activator.CreateInstance(modelType);
}
var ctx = Execution.Begin();
//Replay commands
foreach (var commandEntry in _commandStore.CommandEntriesFrom(model.Revision + 1))
{
ctx.Now = commandEntry.Created;
commandEntry.Item.Redo(ref model);
ctx.Events.Clear();
model.Revision++;
}
model.JournalRestored();
return(model);
}
