MySQLPacket.decodeColumnCountPacket constructor

MySQLPacket.decodeColumnCountPacket(Uint8List buffer)

Decodifica um pacote que contém a contagem de colunas MySQLPacketColumnCount.

Implementation

factory MySQLPacket.decodeColumnCountPacket(Uint8List buffer) {
  final header = decodePacketHeader(buffer);
  final offset = 4;
  final byteData = ByteData.sublistView(buffer);
  final type = byteData.getUint8(offset);
  late MySQLPacketPayload payload;

  if (type == 0x00) {
    payload = MySQLPacketOK.decode(
      Uint8List.sublistView(buffer, offset),
    );
  } else if (type == 0xff) {
    payload = MySQLPacketError.decode(
      Uint8List.sublistView(buffer, offset),
    );
  } else if (type == 0xfb) {
    throw MySQLProtocolException(
      "COM_QUERY_RESPONSE of type 0xfb is not implemented",
    );
  } else {
    payload = MySQLPacketColumnCount.decode(
      Uint8List.sublistView(buffer, offset),
    );
  }

  return MySQLPacket(
    sequenceID: header.item2,
    payloadLength: header.item1,
    payload: payload,
  );
}