public ITransaction BeginTransaction(IsolationLevel isolationLevel)
{
if (_transaction != null)
{
throw new InvalidOperationException("Cannot start transaction.");
}
if (!_linqContext.Context.DatabaseExists())
{
throw new InvalidOperationException(string.Format("Database {0} is unavailable.", _linqContext.Context.Connection.Database));
}
if (_linqContext.Connection.State != ConnectionState.Open)
{
_linqContext.Connection.Open();
}
IDbTransaction transaction = _linqContext.Connection.BeginTransaction(isolationLevel);
_linqContext.Transaction = transaction;
_transaction = new LinqToSqlTransaction(transaction);
_transaction.TransactionCommitted += TransactionCommitted;
_transaction.TransactionRolledback += TransactionRolledback;
return(_transaction);
}
private void ReleaseCurrentTransaction()
{
if (_transaction != null)
{
_transaction.TransactionCommitted -= TransactionCommitted;
_transaction.TransactionRolledback -= TransactionRolledback;
_transaction.Dispose();
}
_transaction = null;
if (_linqContext.Connection.State == ConnectionState.Open)
{
_linqContext.Connection.Close();
}
}
private void Dispose(bool disposing)
{
if (!disposing)
{
return;
}
if (_disposed)
{
return;
}
if (_transaction != null)
{
_transaction.Dispose();
_transaction = null;
}
if (_linqContext != null)
{
_linqContext.Dispose();
_linqContext = null;
}
_disposed = true;
}
