For full visibility:
It turns out that the error was on my side. Apparently ProtoStuff can talk
different dialects. ProtoStuff and ProtoBuf.
It just depends on what IOUtil implementation you use.
When you read for instance, either use:
ProtobufIOUtil.mergeFrom(inputStream, t, schema, buffer);
or
ProtostuffIOUtil.mergeFrom(inputStream, t, schema, buffer);
This wasn't really clear from their side. I hade no clue. We had of course
been using ProtostuffIOUtil -- when we should have used ProtobufIOUtil
since we are talking between different implementations (ProtoStuff &
protobuf-net).
Best,
Johannes
On Tuesday, October 14, 2014 7:55:58 PM UTC+2, Johannes Elgh wrote:
>
> Hello everyone,
>
> Firstly I need to apologize for any misuse or misunderstand of terms and
> concepts. I'm mostly familiar with the Protocol Buffer implementations
> protostuff and protobuf-net.
>
>
> I have a case that two different implementations (the C# one: protobuf-net
> and the Java one: protostuff) do differently and I'd like to know which way
> is the correct according to the Protocol Buffers specification.
>
> I have these messages:
>
> message A {
> optional string someField = 2;
> optional Location location = 4;
> }
>
> message Location {
> optional Coordinate coordinate = 1;
> optional string city = 2;
> }
>
> message Coordinate {
> ...
> }
>
>
> In the following case we have an object A, with a populated Location with
> coordinate
> = null and city = "someCity".
>
> When protobuf-net (a client) sends this object A (populated as described
> above) to protostuff (the backend) it sends 0x0 in the place of the
> coordinate.
> This results into that protostuff reads a 0 whilst populating Location,
> and therefore thinks that Location is done. When protostuff then reads
> the next field number it finds 2, city, which has the same number as
> someField in A and populates that field instead (city overwrites someField
> ).
>
> So the problem is that protobuf-net sends 0x0 for a null nested messages
> whereas protostuff doesn't even expect it to be there (since it's null).
>
> Best regards,
> Johannes
>
--
You received this message because you are subscribed to the Google Groups
"Protocol Buffers" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to protobuf+unsubscr...@googlegroups.com.
To post to this group, send email to protobuf@googlegroups.com.
Visit this group at http://groups.google.com/group/protobuf.
For more options, visit https://groups.google.com/d/optout.
