public void Rollback(int transactionThreadId)
{
if (!this._engine.DBisOperable)
{
return;
}
TransactionUnit transactionUnit = this.GetTransactionUnit(transactionThreadId);
if (transactionUnit != null)
{
List <ITransactable> tablesForTransaction = transactionUnit.GetTransactionWriteTables();
if (tablesForTransaction.Count() == 0)
{
//DO NOTHING
}
else if (tablesForTransaction.Count() == 1)
{
try
{
tablesForTransaction[0].SingleRollback();
}
//catch (System.Threading.ThreadAbortException ex)
//{
// //We don'T make DBisOperable = false;
// throw ex;
//}
catch (Exception ex)
{
this._engine.DBisOperable = false;
this._engine.DBisOperableReason = "TransactionsCoordinator.Rollback tablesForTransaction.Count = 1";
//CASCADE, WHICH MUST BRING TO DB is not opearatbale state
throw ex;
}
}
else
{
//Rollback MANY AT ONCE
try
{
foreach (var tt1 in tablesForTransaction)
{
tt1.SingleRollback();
}
}
//catch (System.Threading.ThreadAbortException ex1)
//{
// //We don'T make DBisOperable = false;
// throw ex1;
//}
catch (Exception ex1)
{
//CASCADE, WHICH MUST BRING TO DB is not opearatbale state
this._engine.DBisOperable = false;
this._engine.DBisOperableReason = "TransactionsCoordinator.Rollback tablesForTransaction.Count > 1";
throw ex1;
}
}
}
else
{
throw DBreezeException.Throw(DBreezeException.eDBreezeExceptions.TRANSACTION_DOESNT_EXIST);
}
}
/// <summary>
/// Commit
/// </summary>
/// <param name="transactionThreadId"></param>
public void Commit(int transactionThreadId)
{
if (!this._engine.DBisOperable)
{
throw DBreezeException.Throw(DBreezeException.eDBreezeExceptions.DB_IS_NOT_OPERABLE, this._engine.DBisOperableReason, new Exception());
}
TransactionUnit transactionUnit = this.GetTransactionUnit(transactionThreadId);
if (transactionUnit != null)
{
List <ITransactable> tablesForTransaction = transactionUnit.GetTransactionWriteTables();
if (tablesForTransaction.Count() == 0)
{
//DO NOTHING
}
else if (tablesForTransaction.Count() == 1)
{
try
{
tablesForTransaction[0].SingleCommit();
}
catch (System.Threading.ThreadAbortException ex)
{
//Rollback was ok, so we just return mistake, why commit failed
//We don'T make DBisOperable = false;
throw ex;
}
catch (TableNotOperableException ex1)
{
this._engine.DBisOperable = false;
this._engine.DBisOperableReason = "TransactionsCoordinator.Commit tablesForTransaction.Count = 1";
//CASCADE, WHICH MUST BRING TO DB is not opearatbale state
throw ex1;
}
catch (System.Exception ex)
{
//Rollback was ok, so we just return mistake, why commit failed
//CASCADE
throw ex;
}
}
else
{
//Gettign new TransactionJournalId
ulong tranNumber = this._engine._transactionsJournal.GetTransactionNumber();
foreach (var tt in tablesForTransaction)
{
try
{
//Adding table
this._engine._transactionsJournal.AddTableForTransaction(tranNumber, tt);
tt.ITRCommit();
}
//catch (System.Threading.ThreadAbortException ex)
//{
// //We don'T make DBisOperable = false;
// throw ex;
//}
catch (Exception ex)
{
//SMTH HAPPENED INSIDE OF COMMIT Trying to rollBack tables
try
{
foreach (var tt1 in tablesForTransaction)
{
tt1.ITRRollBack();
}
this._engine._transactionsJournal.RemoveTransactionFromDictionary(tranNumber);
}
//catch (System.Threading.ThreadAbortException ex1)
//{
// //We don'T make DBisOperable = false;
// throw ex1;
//}
catch (Exception ex1)
{
//CASCADE, WHICH MUST BRING TO DB is not opearable state
this._engine.DBisOperable = false;
this._engine.DBisOperableReason = "TransactionsCoordinator.Commit tablesForTransaction.Count > 1";
throw new Exception(ex.ToString() + " --> " + ex1.ToString());
}
//In case if rollback succeeded we throw exception brough by bad commit
//CASCADE from LTrieRootNode.TransactionalCommit
throw ex;
}
}//end of foreach
//Here we appear if all tables were succesfully commited (but it's not visible still for READING THREDS and all tables still have their rollback files active)
//We have to finish the transaction
try
{
this._engine._transactionsJournal.FinishTransaction(tranNumber);
}
//catch (System.Threading.ThreadAbortException ex)
//{
// //We don'T make DBisOperable = false;
// throw ex;
//}
catch (Exception ex)
{
this._engine.DBisOperable = false;
this._engine.DBisOperableReason = "TransactionsCoordinator.Commit FinishTransaction";
throw ex;
}
}
}
else
{
throw DBreezeException.Throw(DBreezeException.eDBreezeExceptions.TRANSACTION_DOESNT_EXIST);
}
}
