/// <summary>
/// Specifies an existing <see cref="DbTransaction" /> to be used for database operations.
/// </summary>
/// <param name="transaction"> The transaction to be used. </param>
public override IDbContextTransaction UseTransaction(DbTransaction transaction)
{
if (transaction == null)
{
if (CurrentTransaction != null)
{
CurrentTransaction = null;
}
}
else
{
if (CurrentTransaction != null)
{
throw new InvalidOperationException(RelationalStrings.TransactionAlreadyStarted);
}
Open();
CurrentTransaction = new MySqlRelationalTransaction(
this,
transaction,
Dependencies.TransactionLogger,
transactionOwned: false);
Dependencies.TransactionLogger.TransactionUsed(
this,
transaction,
CurrentTransaction.TransactionId,
DateTimeOffset.UtcNow);
}
return(CurrentTransaction);
}
private async Task <IDbContextTransaction> BeginTransactionWithNoPreconditionsAsync(IsolationLevel isolationLevel, CancellationToken cancellationToken = default(CancellationToken))
{
DbTransaction dbTransaction = null;
if (DbConnection is MySqlConnection mySqlConnection)
{
dbTransaction = await mySqlConnection.BeginTransactionAsync(isolationLevel).ConfigureAwait(false);
}
else
{
dbTransaction = DbConnection.BeginTransaction(isolationLevel);
}
CurrentTransaction
= new MySqlRelationalTransaction(
this,
dbTransaction,
Dependencies.TransactionLogger,
transactionOwned: true);
Dependencies.TransactionLogger.TransactionStarted(
this,
dbTransaction,
CurrentTransaction.TransactionId,
DateTimeOffset.UtcNow);
return(CurrentTransaction);
}
