private static MySqlDataReader ExecuteReader(MySqlConnection connection, MySqlTransaction transaction, CommandType commandType, string commandText, MySqlParameter[] commandParameters, MySqlConnectionOwnership connectionOwnership)
{
MySqlDataReader reader2;
if (connection == null)
{
throw new ArgumentNullException("connection");
}
bool mustCloseConnection = false;
MySqlCommand command = new MySqlCommand();
try
{
MySqlDataReader reader;
PrepareCommand(command, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
if (connectionOwnership == MySqlConnectionOwnership.External)
{
reader = command.ExecuteReader();
}
else
{
reader = command.ExecuteReader(CommandBehavior.CloseConnection);
}
bool flag2 = true;
foreach (MySqlParameter parameter in command.Parameters)
{
if (parameter.Direction != ParameterDirection.Input)
{
flag2 = false;
}
}
if (flag2)
{
command.Parameters.Clear();
}
reader2 = reader;
}
catch
{
if (mustCloseConnection)
{
connection.Close();
}
throw;
}
return reader2;
}
/// <summary>
/// Create and prepare a MySqlCommand, and call ExecuteReader with the appropriate CommandBehavior.
/// </summary>
/// <remarks>
/// If we created and opened the connection, we want the connection to be closed when the DataReader is closed.
///
/// If the caller provided the connection, we want to leave it to them to manage.
/// </remarks>
/// <param name="connection">A valid MySqlConnection, on which to execute this command</param>
/// <param name="transaction">A valid MySqlTransaction, or 'null'</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">The stored procedure name or T-MySql command</param>
/// <param name="commandParameters">An array of MySqlParameters to be associated with the command or 'null' if no parameters are required</param>
/// <param name="connectionOwnership">Indicates whether the connection parameter was provided by the caller, or created by MySqlHelper</param>
/// <returns>MySqlDataReader containing the results of the command</returns>
private static MySqlDataReader ExecuteReader(MySqlConnection connection, MySqlTransaction transaction, CommandType commandType, string commandText, MySqlParameter[] commandParameters, MySqlConnectionOwnership connectionOwnership)
{
if (connection == null) throw new ArgumentNullException("connection");
bool mustCloseConnection = false;
// Create a command and prepare it for execution
MySqlCommand cmd = new MySqlCommand();
try
{
PrepareCommand(cmd, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
// Create a reader
MySqlDataReader dataReader;
// Call ExecuteReader with the appropriate CommandBehavior
if (connectionOwnership == MySqlConnectionOwnership.External)
{
dataReader = cmd.ExecuteReader();
}
else
{
dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
// Detach the MySqlParameters from the command object, so they can be used again.
// HACK: There is a problem here, the output parameter values are fletched
// when the reader is closed, so if the parameters are detached from the command
// then the MySqlReader can磘 set its values.
// When this happen, the parameters can磘 be used again in other command.
bool canClear = true;
foreach (MySqlParameter commandParameter in cmd.Parameters)
{
if (commandParameter.Direction != ParameterDirection.Input)
canClear = false;
}
if (canClear)
{
cmd.Parameters.Clear();
}
return dataReader;
}
catch
{
if (mustCloseConnection)
connection.Close();
throw;
}
}
