/// <summary>
/// Constructs the session for the given user and transaction to the
/// given database.
/// </summary>
/// <param name="transaction">A transaction that handles the commands issued by
/// the user during the session.</param>
/// <param name="userName"></param>
/// <seealso cref="ITransaction"/>
public Session(ITransaction transaction, string userName)
: base(transaction as IEventSource)
{
if (transaction == null)
{
throw new ArgumentNullException("transaction");
}
if (String.IsNullOrEmpty(userName))
{
throw new ArgumentNullException("userName");
}
if (String.Equals(userName, User.SystemName, StringComparison.OrdinalIgnoreCase) ||
String.Equals(userName, User.PublicName, StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentException(String.Format("Cannot open a session for user '{0}'.", userName));
}
Transaction = transaction;
Context = transaction.Context.CreateSessionContext();
Context.RegisterInstance(this);
Transaction.Context.Route <QueryEvent>(OnQueryCommand);
Transaction.GetTableManager().AddInternalTables(new SessionTableContainer(this));
access = new SessionAccess(this);
if (!transaction.Database.Sessions.Add(this))
{
throw new InvalidOperationException("The session was already in the database session list");
}
User = new User(this, userName);
startedOn = DateTimeOffset.UtcNow;
this.OnEvent(new SessionEvent(SessionEventType.Begin));
}
private void Dispose(bool disposing)
{
if (!disposed)
{
if (disposing)
{
try {
Rollback();
} catch (Exception ex) {
this.OnError(new Exception("Error while rolling back on Dispose", ex));
} finally {
if (Context != null)
{
Context.Dispose();
}
}
}
Context = null;
access = null;
disposed = true;
}
}
