/// <summary>
/// Get all events provided by an specified event source.
/// </summary>
/// <param name="eventSourceId">The id of the event source that owns the events.</param>
/// <returns>All the events from the event source.</returns>
public IEnumerable <ISourcedEvent> GetAllEventsSinceVersion(Guid id, long version)
{
var result = new List <ISourcedEvent>();
// Create connection and command.
using (var connection = new SqlConnection(_connectionString))
using (var command = new SqlCommand(Queries.SelectAllEventsQuery, connection))
{
// Add EventSourceId parameter and open connection.
command.Parameters.AddWithValue("EventSourceId", id);
command.Parameters.AddWithValue("EventSourceVersion", version);
connection.Open();
// Execute query and create reader.
using (SqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
StoredEvent <string> rawEvent = ReadEvent(reader);
var document = _translator.TranslateToCommon(rawEvent);
_converter.Upgrade(document);
var evnt = (ISourcedEvent)_formatter.Deserialize(document);
evnt.InitializeFrom(rawEvent);
result.Add(evnt);
}
}
}
return(result);
}
private SourcedEvent ReadSourcedEvent(SqlDataReader reader)
{
StoredEvent <string> rawEvent = ReadEvent(reader);
var document = _translator.TranslateToCommon(rawEvent);
_converter.Upgrade(document);
var evnt = (SourcedEvent)_formatter.Deserialize(document);
evnt.InitializeFrom(rawEvent);
return(evnt);
}
/// <summary>Reads the current row in the <paramref name="reader"/> and translates it to a <see cref="CommittedEvent"/>.</summary>
/// <param name="reader">The data record to read the current record from.</param>
/// <returns>A fully populated <see cref="CommittedEvent"/> that contains the data from within the <paramref name="reader"/>.</returns>
private CommittedEvent ReadEventFromDbReader(IDataRecord reader)
{
StoredEvent <string> rawEvent = ReadEvent(reader);
var document = _translator.TranslateToCommon(rawEvent);
_converter.Upgrade(document);
var payload = _formatter.Deserialize(document.Data, document.EventName);
// TODO: Legacy stuff... we do not have a dummy id with the current schema.
var dummyCommitId = Guid.Empty;
var evnt = new CommittedEvent(dummyCommitId, document.EventIdentifier, document.EventSourceId, document.EventSequence, document.EventTimeStamp, payload, document.EventVersion);
// TODO: Legacy stuff... should move.
if (evnt is ISourcedEvent)
{
((ISourcedEvent)evnt).InitializeFrom(rawEvent);
}
return(evnt);
}
protected override T Deserialize(string serializedEventData)
{
var data = Translate(serializedEventData);
return((T)_formatter.Deserialize(data, EventName));
}