public bool BeingActionTpl(Session session, Statement cs)
{
if (cs != null)
{
if (session.AbortTransaction)
{
return(false);
}
session.TempSet.Clear();
if (cs.IsCatalogChange())
{
if (this._catalogWriteSession == null)
{
this.GetTransactionSessions(session.TempSet);
session.TempSet.Remove(session);
if (session.TempSet.IsEmpty())
{
this._catalogWriteSession = session;
this._isLockedMode = true;
}
else
{
this._catalogWriteSession = session;
this._isLockedMode = true;
TransactionManagerCommon.SetWaitingSessionTpl(session);
}
return(true);
}
this._catalogWriteSession.WaitingSessions.Add(session);
session.Latch.CountUp();
return(true);
}
if (this._isLockedMode)
{
if ((cs.GetTableNamesForRead().Length == 0) && (cs.GetTableNamesForWrite().Length == 0))
{
return(true);
}
if (cs.GetTableNamesForWrite().Length != 0)
{
if (cs.GetTableNamesForWrite()[0].schema == SqlInvariants.LobsSchemaQname)
{
return(true);
}
}
else if ((cs.GetTableNamesForRead().Length != 0) && (cs.GetTableNamesForRead()[0].schema == SqlInvariants.LobsSchemaQname))
{
return(true);
}
this._catalogWriteSession.WaitingSessions.Add(session);
session.Latch.CountUp();
}
}
return(true);
}
public void BeginAction(Session session, Statement cs)
{
if (!session.HasLocks(cs))
{
lock (base.Lock)
{
if (base.SetWaitedSessionsTpl(session, cs))
{
if (session.TempSet.IsEmpty())
{
base.LockTablesTpl(session, cs);
}
else
{
TransactionManagerCommon.SetWaitingSessionTpl(session);
}
}
}
}
}