encode method

Implementation

@override
Uint8List encode() {
  final buffer = ByteDataWriter(endian: Endian.little);

  // command type
  buffer.writeUint8(0x17);
  // stmt id
  buffer.writeUint32(stmtID, Endian.little);
  // flags
  buffer.writeUint8(0);
  // iteration count (always 1)
  buffer.writeUint32(1, Endian.little);

  // params
  if (params.isNotEmpty) {
    // create null-bitmap
    final bitmapSize = ((params.length + 7) / 8).floor();
    final nullBitmap = Uint8List(bitmapSize);

    // write null values into null bitmap
    for (int paramIndex = 0; paramIndex < params.length; paramIndex++) {
      if (params[paramIndex] == null) {
        final paramByteIndex = (paramIndex / 8).floor();
        final paramBitIndex = paramIndex % 8;
        nullBitmap[paramByteIndex] |= (1 << paramBitIndex);
      }
    }

    // write null bitmap
    buffer.write(nullBitmap);

    // write new-param-bound flag
    buffer.writeUint8(1);

    // write param types
    for (int i = 0; i < params.length; i++) {
      final param = params[i];
      final paramType = paramTypes[i];

      if (param == null) {
        buffer.writeUint8(mysqlColumnTypeNull);
        buffer.writeUint8(0); // Unused flag for null type
      } else {
        buffer.writeUint8(paramType!.intVal); // Use determined type
        buffer.writeUint8(0); // Unused flag, could be used for unsigned flag
      }
    }

    // adicionei write param values
    for (int i = 0; i < params.length; i++) {
      final param = params[i];
      final paramType = paramTypes[i];
      if (param != null) {
        _writeParamValue(buffer, param, paramType!); // Write binary data
      }
    }
  }

  return buffer.toBytes();
}