internal OleDbTransaction ValidateTransaction(OleDbTransaction transaction, string method)
{
if (this.weakTransaction != null)
{
OleDbTransaction target = (OleDbTransaction)this.weakTransaction.Target;
if ((target != null) && this.weakTransaction.IsAlive)
{
target = OleDbTransaction.TransactionUpdate(target);
}
if (target != null)
{
if (transaction == null)
{
throw ADP.TransactionRequired(method);
}
OleDbTransaction transaction3 = OleDbTransaction.TransactionLast(target);
if (transaction3 == transaction)
{
return(transaction);
}
if (transaction3.Connection != transaction.Connection)
{
throw ADP.TransactionConnectionMismatch();
}
throw ADP.TransactionCompleted();
}
this.weakTransaction = null;
}
else if ((transaction != null) && (transaction.Connection != null))
{
throw ADP.TransactionConnectionMismatch();
}
return(null);
}
internal OleDbTransaction ValidateTransaction(OleDbTransaction transaction, string method)
{
if (null != this.weakTransaction)
{
OleDbTransaction head = (OleDbTransaction)this.weakTransaction.Target;
if ((null != head) && this.weakTransaction.IsAlive)
{
head = OleDbTransaction.TransactionUpdate(head);
// either we are wrong or finalize was called and object still alive
Debug.Assert(null != head, "unexcpted Transaction state");
}
// else transaction has finalized on user
if (null != head)
{
if (null == transaction)
{
// valid transaction exists and cmd doesn't have it
throw ADP.TransactionRequired(method);
}
else
{
OleDbTransaction tail = OleDbTransaction.TransactionLast(head);
if (tail != transaction)
{
if (tail.Connection != transaction.Connection)
{
throw ADP.TransactionConnectionMismatch();
}
// else cmd has incorrect transaction
throw ADP.TransactionCompleted();
}
// else cmd has correct transaction
return(transaction);
}
}
else // cleanup for Finalized transaction
{
this.weakTransaction = null;
}
}
else if ((null != transaction) && (null != transaction.Connection)) // MDAC 72706
{
throw ADP.TransactionConnectionMismatch();
}
// else no transaction and cmd is correct
// MDAC 61649
// if transactionObject is from this connection but zombied
// and no transactions currently exists - then ignore the bogus object
return(null);
}
