newBuilderForType: "Constructs a new builder for a message of the same type as this message."
That's if you have a message, and you want to create a builder for that type of message. Not what you want. The actual types are outside of the library, and need to be looked up via a type registry. I could have sworn there was such a thing, but can't find it now. May be good to have a look through the generated code, and see where it registers itself -- should give you a pointer. Or you can maintain the registry yourself - a map of string -> default instance for the type, from which you can call newBuilderForType(). -ilia On Mon, Jul 9, 2018 at 5:45 PM, John Lilley <[email protected]> wrote: > Well, apparently I am really off base. Given a Descriptor I cannot figure > out how to create the right message. I *thought* this was the right > approach: > Descriptors.Descriptor desc = // look up the descriptor > Builder builder = desc.toProto().newBuilderForType(); > Message message = builder.mergeFrom(requestBytes).build(); > > > But no. Can anyone help me with this? I need to go from the full name of a > message to its builder and I'm not finding anything like MessageFactory() or > DescriptorPool in Java. > Thanks > john > > -- > 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 [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/protobuf. > For more options, visit https://groups.google.com/d/optout. -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/protobuf. For more options, visit https://groups.google.com/d/optout.
