protected virtual Object Execute(IDbCommand cmd, Object[] args)
{
if (_dataReaderHandler == null)
{
throw new EmptyRuntimeException("dataReaderHandler");
}
IDataReader dataReader = null;
try {
if (_dataReaderHandler is ObjectDataReaderHandler) // CSharp specific
{
return(ExecuteScalar(cmd));
}
else
{
try {
dataReader = CreateDataReader(cmd);
return(_dataReaderHandler.Handle(dataReader));
} catch (Exception e) {
HandleDbException(e, cmd);
return(null); // Unreachable!
}
}
} finally {
Close(dataReader);
}
}
public async Task <IResultSets> ExecuteReaderAsync(IDbCommand command, IDataReaderHandler handler, CancellationToken cancellationToken = default(CancellationToken))
{
using (var reader = await((MySqlCommand)command).ExecuteReaderAsync(cancellationToken).ConfigureAwait(false))
{
return(handler.Handle(new OptimizedDataReader(reader)));
}
}
public async Task Handle(DbDataReader reader, CancellationToken token)
{
var hasNext = await reader.NextResultAsync(token).ConfigureAwait(false);
if (!hasNext)
{
throw new InvalidOperationException("There is no next result to read over.");
}
await _inner.Handle(reader, token);
}
