/// <summary>
/// Begins the transaction with the specified isolation level.
/// </summary>
/// <param name="isolationLevel">The isolation level.</param>
public static void Begin(IsolationLevel isolationLevel)
{
if (IsActive)
{
throw new InvalidOperationException(); // Transaction is already Active (Parallel transactions msg..).
}
ITransactionProvider tran = null;
try
{
tran = DataProvider.Current.CreateTransaction();
if (tran == null)
{
// Transactions are not supported at the current provider.
_notSupported = true;
return;
}
tran.Begin(isolationLevel);
}
catch //rethrow
{
if (tran != null)
{
tran.Dispose();
}
throw;
}
Logger.WriteVerbose("Transaction: " + tran.Id + " BEGIN.");
ContextHandler.SetTransaction(tran);
OnBeginTransaction(tran, EventArgs.Empty);
}
/// <summary>
/// Commits the transaction.
/// </summary>
public static void Commit()
{
if (_notSupported)
{
return;
}
ITransactionProvider tran = ContextHandler.GetTransaction();
if (tran == null) // !IsActive
{
throw new InvalidOperationException(); // Transaction is not Active.
}
try
{
tran.Commit();
var queue = ContextHandler.GetTransactionQueue();
if (queue != null)
{
queue.Commit();
}
OnCommitTransaction(tran, EventArgs.Empty);
}
finally
{
ContextHandler.SetTransaction(null);
ContextHandler.SetTransactionQueue(null);
tran.Dispose();
}
}
/// <summary>
/// Commits the transaction.
/// </summary>
public static void Commit()
{
if (_notSupported)
{
return;
}
ITransactionProvider tran = ContextHandler.GetTransaction();
if (tran == null) // !IsActive
{
throw new InvalidOperationException(); // Transaction is not Active.
}
try
{
tran.Commit();
var queue = ContextHandler.GetTransactionQueue();
if (queue != null)
{
queue.Commit();
}
OnCommitTransaction(tran, EventArgs.Empty);
}
finally
{
Logger.WriteVerbose("Transaction: " + tran.Id + " COMMIT. Running time: " + (DateTime.UtcNow - tran.Started));
ContextHandler.SetTransaction(null);
ContextHandler.SetTransactionQueue(null);
tran.Dispose();
}
}
/// <summary>
/// Begins the transaction with the specified isolation level and timeout in seconds.
/// </summary>
/// <param name="isolationLevel">The isolation level.</param>
/// <param name="timeout">The timeout in seconds.</param>
public static void Begin(IsolationLevel isolationLevel, TimeSpan timeout)
{
if (IsActive)
{
throw new InvalidOperationException(); // Transaction is already Active (Parallel transactions msg..).
}
ITransactionProvider tran = null;
try
{
tran = CommonComponents.TransactionFactory?.CreateTransaction();
if (tran == null)
{
// Transactions are not supported at the current provider.
_notSupported = true;
return;
}
tran.Begin(isolationLevel, timeout);
}
catch // rethrow
{
if (tran != null)
{
tran.Dispose();
}
throw;
}
SnTrace.Database.Write("Transaction BEGIN: {0}.", tran.Id);
ContextHandler.SetTransaction(tran);
OnBeginTransaction(tran, EventArgs.Empty);
}
/// <summary>
/// Rollbacks the current transaction.
/// </summary>
public static void Rollback()
{
if (_notSupported)
{
return;
}
ITransactionProvider tran = ContextHandler.GetTransaction();
if (tran == null) // Means: !IsActive (Transaction is not Active)
{
throw new InvalidOperationException("Transaction is not active");
}
try
{
tran.Rollback();
var queue = ContextHandler.GetTransactionQueue();
if (queue != null)
{
queue.Rollback();
}
OnRollbackTransaction(tran, EventArgs.Empty);
}
finally
{
////Cache.Clear(); // State "rollback" in cache. TODO: cache clear in cluster must be ensured.
////CACHE: Ez sose mûködött jól... Cache.Clear kéne.
//DistributedApplication.Cache.Reset();
Logger.WriteVerbose("Transaction: " + tran.Id + " ROLLBACK. Running time: " + (DateTime.UtcNow - tran.Started));
ContextHandler.SetTransaction(null);
ContextHandler.SetTransactionQueue(null);
tran.Dispose();
}
}