[protobuf] Decoding / Encoding Help

[Carmelita Relles]

I have the following message structures that compiles smoothly in protoc.exe
message MessageBase {
extensions 2;
required Header header = 1;
}

message Message1 {
  extends MessageBase {
optional Message1 message = 2;
  }
  optional int32 id = 1;
}

message Message2 {
  extends MessageBase {
optional Message2 message = 2;
  }
  optional int32 count = 1;
}

What is the fastest way to encode and decode Message1 and Message2?

Let's assume that from Header field, we can know if message is Message1 or 
Message2 instance. So far I have the following code (in Java):

Header header = M3apMessage.parseFrom( data ).getHeader();
switch( header.getMessageType ){
  case Message1:
//How to decode the rest of the bytes as stated in Message1 structure
  break;

  case Message2:
//How to decode the rest of the bytes as stated in Message2 structure
  break;
}

Thanks in advance!

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[protobuf] Reading Message Extensions

[Carmelita Relles]

I would like to know what is the fastest way to read a message extension, 
say for example, I have the following structure:
message BaseMessage 
{
   extensions 2;
   required Header header = 1;
}

message Message1 
{
   extend BaseMessage 
  {
required Message1 message = 2;   
  }
  optional int32 id = 1;
}

message Message2 
{
   extend BaseMessage 
  {
required Message1 message = 2;   
  }
  optional String name = 1;
}

Structure above is compilable by protoc.exe. 

Let's say that from the header, I know if the message is Message1 or 
Message2 instance.

How will I be able to parse this in Java? Here's the code I have so far :
Header header = M3apMessage.parseFrom( data ).getHeader();

switch( header.getMessageType() )
{
case MESSAGE1:
//HOW TO READ THE REST OF THE MESSAGE AS MESSAGE1?
break;
case MESSAGE2:
//HOW TO READ THE REST OF THE MESSAGE AS MESSAGE2?
break;
}

Thanks in advance for the help!

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