Yes, I tried to use the reflection API, but this doesn't seem right to me because I have to mantain 3 classes for the same entity. When I add a new attribute I'll have to update 3 files! I know I really cannot use JPA with the java code generated by protoc, but using the reflection API the best way? I was used to a java-only world where I could automatically transform my objects into xml messages having only one class representing one entity for all project.
About my try on the reflection API, I did not succed and I posted one question about it, could you please help me? I understood that I had to use the protobuf reflection together with java reflection: http://groups.google.com/group/protobuf/browse_thread/thread/add9295e2151481e Thank you for your reply. On Tue, Sep 14, 2010 at 3:19 PM, Kenton Varda <ken...@google.com> wrote: > I'm not all that familiar with JPA, but my guess is that applying JPA to a > protocol buffer type is going to be much less efficient than using > protobuf's native encoding. So you probably want to be serializing your > protobufs with .toByteArray() and then persisting that. > > Failing that, you might want to look at the protobuf reflection API (not to > be confused with java reflection) to see if it might be part of a solution: > > http://code.google.com/apis/protocolbuffers/docs/reference/java/com/google/protobuf/Message.html > > > <http://code.google.com/apis/protocolbuffers/docs/reference/java/com/google/protobuf/Message.html>E.g. > maybe you could call message.getAllFields() and then feed the data into JPA > somehow. > > On Mon, Sep 13, 2010 at 12:09 PM, roberto_sc <roberto.cal...@gmail.com>wrote: > >> Hi >> >> I have a basic question about how to organize my project. >> I have a client running C# code, a server running Java code and I >> intend to use protocol buffers to exchange data. >> I thought I could use the .proto file to describe the classes of my >> datamodel and generate .java and .cs and then use these generated src >> as my datamodel. But protoc generate code for message exchange and >> cannot be edited, for example, I cannot generate java code for my >> Person class and add the annotations to persist using JPA. >> >> So, the question is, do I have to mantain 3 files - .java, .cs >> and .proto - that represent the same thing? >> >> Thanks >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Protocol Buffers" group. >> To post to this group, send email to proto...@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. >> >> > -- virtus in medium est . -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to proto...@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.
