The encoding is documented in detail here: http://code.google.com/apis/protocolbuffers/docs/encoding.html
<http://code.google.com/apis/protocolbuffers/docs/encoding.html>The short answer is, yes, repeated fields are literally encoded as repeated individual values, unless you use "packed" encoding. On Tue, Feb 1, 2011 at 3:01 AM, Timothy Parez <timothypa...@gmail.com>wrote: > Hello, > > Considering the following proto file: > > message FileDescriptor > { > required string Filename = 1; > optional int64 Size = 2 [default = 0]; > } > > message FileList > { > repeated FileDescriptor Files = 1; > } > > If you create something like this: > (and I'm duplicating the data because it made it easier to spot in a > hex editor) > > files.Files.Add(new FileDescriptor() { Filename = "AAAAAAA", Size = > 100 }); > files.Files.Add(new FileDescriptor() { Filename = "AAAAAAA", Size = > 100 }); > files.Files.Add(new FileDescriptor() { Filename = "AAAAAAA", Size = > 100 }); > files.Files.Add(new FileDescriptor() { Filename = "AAAAAAA", Size = > 100 }); > > and then serialize it using the Protobuf.Serializer I expected it to > generate something like > > Tag for the FileList -> Id 1, WireType 2 => 0x0A > Length of the payload (all the bytes for all the files that follow) > > But instead I found everything is simply repeated. > > 0A 0B 0A 07 41 41 41 41 41 41 41 10 64 > 0A 0B 0A 07 41 41 41 41 41 41 41 10 64 > 0A 0B 0A 07 41 41 41 41 41 41 41 10 64 > 0A 0B 0A 07 41 41 41 41 41 41 41 10 64 > > I'm wondering, is this an implementation detail (and allowed by the > protobol buffer specifications) > or a requirement of the google protocol buffer specifications ? > > It does seem to add quite a bit of overhead, imagine the FileList has > other properties, > they would be repeated for every instance of FileDescriptor ? > > Or am I missing something ? > > > -- > You received this message because you are subscribed to the Google Groups > "Protocol Buffers" group. > To post to this group, send email to protobuf@googlegroups.com. > To unsubscribe from this group, send email to > protobuf+unsubscr...@googlegroups.com<protobuf%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/protobuf?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
