public void Apply(QuestStarted started)
{
Name = started.Name;
}
public async Task capture_events()
{
#region sample_event-store-quickstart
var store = DocumentStore.For(_ =>
{
_.Connection(ConnectionSource.ConnectionString);
_.Projections.SelfAggregate <QuestParty>();
});
var questId = Guid.NewGuid();
using (var session = store.OpenSession())
{
var started = new QuestStarted {
Name = "Destroy the One Ring"
};
var joined1 = new MembersJoined(1, "Hobbiton", "Frodo", "Sam");
// Start a brand new stream and commit the new events as
// part of a transaction
session.Events.StartStream <Quest>(questId, started, joined1);
await session.SaveChangesAsync();
// Append more events to the same stream
var joined2 = new MembersJoined(3, "Buckland", "Merry", "Pippen");
var joined3 = new MembersJoined(10, "Bree", "Aragorn");
var arrived = new ArrivedAtLocation {
Day = 15, Location = "Rivendell"
};
session.Events.Append(questId, joined2, joined3, arrived);
await session.SaveChangesAsync();
}
#endregion
#region sample_event-store-start-stream-with-explicit-type
using (var session = store.OpenSession())
{
var started = new QuestStarted {
Name = "Destroy the One Ring"
};
var joined1 = new MembersJoined(1, "Hobbiton", "Frodo", "Sam");
// Start a brand new stream and commit the new events as
// part of a transaction
session.Events.StartStream(typeof(Quest), questId, started, joined1);
}
#endregion
#region sample_event-store-start-stream-with-no-type
using (var session = store.OpenSession())
{
var started = new QuestStarted {
Name = "Destroy the One Ring"
};
var joined1 = new MembersJoined(1, "Hobbiton", "Frodo", "Sam");
// Start a brand new stream and commit the new events as
// part of a transaction
// no stream type will be stored in database
session.Events.StartStream(questId, started, joined1);
}
#endregion
#region sample_events-fetching-stream
using (var session = store.OpenSession())
{
var events = await session.Events.FetchStreamAsync(questId);
events.Each(evt =>
{
Console.WriteLine($"{evt.Version}.) {evt.Data}");
});
}
#endregion
#region sample_events-aggregate-on-the-fly
using (var session = store.OpenSession())
{
// questId is the id of the stream
var party = session.Events.AggregateStream <QuestParty>(questId);
Console.WriteLine(party);
var party_at_version_3 = await session.Events
.AggregateStreamAsync <QuestParty>(questId, 3);
var party_yesterday = await session.Events
.AggregateStreamAsync <QuestParty>(questId, timestamp : DateTime.UtcNow.AddDays(-1));
}
#endregion
using (var session = store.OpenSession())
{
var party = session.Load <QuestParty>(questId);
Console.WriteLine(party);
}
}
public void SampleCopyAndTransformStream()
{
// SAMPLE: scenario-copyandtransformstream-setup
var started = new QuestStarted {
Name = "Find the Orb"
};
var joined = new MembersJoined {
Day = 2, Location = "Faldor's Farm", Members = new[] { "Garion", "Polgara", "Belgarath" }
};
var slayed1 = new MonsterSlayed {
Name = "Troll"
};
var slayed2 = new MonsterSlayed {
Name = "Dragon"
};
using (var session = theStore.OpenSession())
{
session.Events.StartStream <Quest>(started.Name, started, joined, slayed1, slayed2);
session.SaveChanges();
}
// ENDSAMPLE
// SAMPLE: scenario-copyandtransformstream-transform
using (var session = theStore.OpenSession())
{
var events = session.Events.FetchStream(started.Name);
var transformedEvents = events.SelectMany(x =>
{
switch (x.Data)
{
case MonsterSlayed monster:
{
// Trolls we remove from our transformed stream
return(monster.Name.Equals("Troll") ? new object[] { } : new[] { monster });
}
case MembersJoined members:
{
// MembersJoined events we transform into a series of events
return(MemberJoined.From(members));
}
}
return(new[] { x.Data });
}).Where(x => x != null).ToArray();
var moveTo = $"{started.Name} without Trolls";
// We copy the transformed events to a new stream
session.Events.StartStream <Quest>(moveTo, transformedEvents);
// And additionally mark the old stream as moved. Furthermore, we assert on the new expected stream version to guard against any racing updates
session.Events.Append(started.Name, events.Count + 1, new StreamMovedTo
{
To = moveTo
});
// Transactionally update the streams.
session.SaveChanges();
}
// ENDSAMPLE
}
public void capture_events()
{
// SAMPLE: event-store-quickstart
var store = DocumentStore.For(_ =>
{
_.Connection(ConnectionSource.ConnectionString);
_.Events.InlineProjections.AggregateStreamsWith <QuestParty>();
});
var questId = Guid.NewGuid();
using (var session = store.OpenSession())
{
var started = new QuestStarted {
Name = "Destroy the One Ring"
};
var joined1 = new MembersJoined(1, "Hobbiton", "Frodo", "Sam");
// Start a brand new stream and commit the new events as
// part of a transaction
session.Events.StartStream <Quest>(questId, started, joined1);
session.SaveChanges();
// Append more events to the same stream
var joined2 = new MembersJoined(3, "Buckland", "Merry", "Pippen");
var joined3 = new MembersJoined(10, "Bree", "Aragorn");
var arrived = new ArrivedAtLocation {
Day = 15, Location = "Rivendell"
};
session.Events.Append(questId, joined2, joined3, arrived);
session.SaveChanges();
}
// ENDSAMPLE
// SAMPLE: events-fetching-stream
using (var session = store.OpenSession())
{
var events = session.Events.FetchStream(questId);
events.Each(evt =>
{
Console.WriteLine($"{evt.Version}.) {evt.Data}");
});
}
// ENDSAMPLE
// SAMPLE: events-aggregate-on-the-fly
using (var session = store.OpenSession())
{
// questId is the id of the stream
var party = session.Events.AggregateStream <QuestParty>(questId);
Console.WriteLine(party);
var party_at_version_3 = session.Events
.AggregateStream <QuestParty>(questId, 3);
var party_yesterday = session.Events
.AggregateStream <QuestParty>(questId, timestamp: DateTime.UtcNow.AddDays(-1));
}
// ENDSAMPLE
using (var session = store.OpenSession())
{
var party = session.Load <QuestParty>(questId);
Console.WriteLine(party);
}
}
public static void OnQuestStarted(QuestInfo quest)
{
QuestStarted?.Invoke(quest);
}
public void Apply(QuestStarted started)
{
Name = started.Name;
}
public void InvokeQuestStarted(TrainCarType unlockedTrainCar)
{
QuestStarted?.Invoke(unlockedTrainCar);
Debug.Log($"Quest started, {unlockedTrainCar}");
}
