/// <summary>
/// Enlists if necessary.
/// </summary>
/// <param name="weAreSessionOwner">if set to <c>true</c> [we are session owner].</param>
/// <param name="transaction">The transaction.</param>
/// <param name="session">The session.</param>
/// <returns></returns>
protected bool EnlistIfNecessary(bool weAreSessionOwner,
ITransaction transaction,
SessionDelegate session)
{
if (transaction == null)
{
return(false);
}
var list = (IList <ISession>)transaction.Context["nh.session.enlisted"];
bool shouldEnlist;
if (list == null)
{
list = new List <ISession>();
shouldEnlist = true;
}
else
{
shouldEnlist = true;
foreach (ISession sess in list)
{
if (SessionDelegate.AreEqual(session, sess))
{
shouldEnlist = false;
break;
}
}
}
if (shouldEnlist)
{
if (session.Transaction == null || !session.Transaction.IsActive)
{
transaction.Context["nh.session.enlisted"] = list;
IsolationLevel level = TranslateIsolationLevel(transaction.IsolationMode);
transaction.Enlist(new ResourceAdapter(session.BeginTransaction(level), transaction.IsAmbient));
list.Add(session);
}
if (weAreSessionOwner)
{
transaction.RegisterSynchronization(new SessionDisposeSynchronization(session));
}
}
return(true);
}
