private void CheckCommand()
{
if (_transaction != null && _transaction.IsCompleted)
{
_transaction = null;
}
FbConnection.EnsureOpen(_connection);
//if (_activeReader != null)
//{
// throw new InvalidOperationException("There is already an open DataReader associated with this Command which must be closed first.");
//}
if (_transaction == null &&
_connection.InnerConnection.HasActiveTransaction &&
!_connection.InnerConnection.IsEnlisted)
{
throw new InvalidOperationException("Execute requires the Command object to have a Transaction object when the Connection object assigned to the command is in a pending local transaction. The Transaction property of the Command has not been initialized.");
}
if (_transaction != null && !_transaction.IsCompleted &&
!_connection.Equals(_transaction.Connection))
{
throw new InvalidOperationException("Command Connection is not equal to Transaction Connection.");
}
if (_commandText == null || _commandText.Length == 0)
{
throw new InvalidOperationException("The command text for this Command has not been set.");
}
}
private T GetValue <T>(byte item)
{
FbConnection.EnsureOpen(Connection);
var items = new byte[]
{
item,
IscCodes.isc_info_end
};
var info = Connection.InnerConnection.Database.GetDatabaseInfo(items);
return(info.Any() ? ConvertValue <T>(info[0]) : default);
