// NOTE: This is just a private helper because OracleClient V1.1 shipped
// with a different argument name and it's a breaking change to not use
// the same argument names in V2.0 (VB Named Parameter Binding--Ick)
private void EnlistDistributedTransactionHelper(System.EnterpriseServices.ITransaction transaction)
{
System.Security.PermissionSet permissionSet = new System.Security.PermissionSet(System.Security.Permissions.PermissionState.None);
permissionSet.AddPermission(SqlConnection.ExecutePermission); // MDAC 81476
permissionSet.AddPermission(new System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode));
permissionSet.Demand();
SqlClientEventSource.Log.TryTraceEvent("<prov.DbConnectionHelper.EnlistDistributedTransactionHelper|RES|TRAN> {0}, Connection enlisting in a transaction.", ObjectID);
SysTx.Transaction indigoTransaction = null;
if (null != transaction)
{
indigoTransaction = SysTx.TransactionInterop.GetTransactionFromDtcTransaction((SysTx.IDtcTransaction)transaction);
}
RepairInnerConnection();
// NOTE: since transaction enlistment involves round trips to the
// server, we don't want to lock here, we'll handle the race conditions
// elsewhere.
InnerConnection.EnlistTransaction(indigoTransaction);
// NOTE: If this outer connection were to be GC'd while we're
// enlisting, the pooler would attempt to reclaim the inner connection
// while we're attempting to enlist; not sure how likely that is but
// we should consider a GC.KeepAlive(this) here.
GC.KeepAlive(this);
}
//// NOTE: This is just a private helper because OracleClient V1.1 shipped
//// with a different argument name and it's a breaking change to not use
//// the same argument names in V2.0 (VB Named Parameter Binding--Ick)
//private void EnlistDistributedTransactionHelper(System.EnterpriseServices.ITransaction transaction) {
// SysTx.Transaction indigoTransaction = null;
// if (null != transaction) {
// indigoTransaction = SysTx.TransactionInterop.GetTransactionFromDtcTransaction((SysTx.IDtcTransaction)transaction);
// }
// RepairInnerConnection();
// // NOTE: since transaction enlistment involves round trips to the
// // server, we don't want to lock here, we'll handle the race conditions
// // elsewhere.
// InnerConnection.EnlistTransaction(indigoTransaction);
// // NOTE: If this outer connection were to be GC'd while we're
// // enlisting, the pooler would attempt to reclaim the inner connection
// // while we're attempting to enlist; not sure how likely that is but
// // we should consider a GC.KeepAlive(this) here.
// GC.KeepAlive(this);
//}
public override void EnlistTransaction(SysTx.Transaction?transaction)
{
// If we're currently enlisted in a transaction and we were called
// on the EnlistTransaction method (Whidbey) we're not allowed to
// enlist in a different transaction.
DbConnectionInternal innerConnection = InnerConnection;
// NOTE: since transaction enlistment involves round trips to the
// server, we don't want to lock here, we'll handle the race conditions
// elsewhere.
SysTx.Transaction?enlistedTransaction = innerConnection.EnlistedTransaction;
if (enlistedTransaction != null)
{
// Allow calling enlist if already enlisted (no-op)
if (enlistedTransaction.Equals(transaction))
{
return;
}
// Allow enlisting in a different transaction if the enlisted transaction has completed.
if (enlistedTransaction.TransactionInformation.Status == SysTx.TransactionStatus.Active)
{
throw ADP.TransactionPresent();
}
}
RepairInnerConnection();
InnerConnection.EnlistTransaction(transaction);
// NOTE: If this outer connection were to be GC'd while we're
// enlisting, the pooler would attempt to reclaim the inner connection
// while we're attempting to enlist; not sure how likely that is but
// we should consider a GC.KeepAlive(this) here.
GC.KeepAlive(this);
}
/// <summary>
/// Enlists in the specified transaction.
/// </summary>
/// <param name="transaction">A reference to an existing <see cref="T:System.Transactions.Transaction" /> in which to enlist.</param>
public override void EnlistTransaction(Transaction transaction)
{
if (InnerConnection == null)
{
throw new InvalidOperationException(Messages.PropertyNotInitialized("Connection"));
}
InnerConnection.EnlistTransaction(transaction);
}
public override void EnlistTransaction(Transaction transaction)
{
InnerConnection.EnlistTransaction(transaction);
if (transaction != null)
{
transaction.TransactionCompleted += OnDtcTransactionCompleted;
Stats.DtcTransactionEnlisted(ConnectionId, transaction.IsolationLevel);
}
}
public override void EnlistTransaction(Transaction transaction)
{
InnerConnection.EnlistTransaction(transaction);
if (transaction != null)
{
transaction.TransactionCompleted += OnDtcTransactionCompleted;
if (MessageBroker != null)
{
MessageBroker.Publish(new DtcTransactionEnlistedMessage(ConnectionId, transaction.IsolationLevel));
}
}
}
public override void EnlistTransaction(Transaction transaction)
{
InnerConnection.EnlistTransaction(transaction);
}
