Re: [protobuf] Can a message derive from another message?

2011-03-03 Thread Evan Jones
On 03/02/2011 10:04 AM, ZHOU Xiaobo wrote: required string Content = 3; WARNING: You should be using type bytes here, not type string. This doesn't matter for C++, but matters for other languages which will assume strings contain UTF-8 data. Evan -- http://evanjones.ca/ -- You

Re: [protobuf] Can a message derive from another message?

2011-03-03 Thread ZHOU Xiaobo
thank you. It sounds like what I am looking for No, message inheritance is not supported. Have a look at http://code.google.com/apis/protocolbuffers/docs/techniques.html#union and see if that solves your use case. On Wed, Mar 2, 2011 at 7:04 AM, ZHOU Xiaobo xb.z...@qq.com wrote: Hi: My

Re: [protobuf] Can a message derive from another message?

2011-03-03 Thread ZHOU Xiaobo
thanks On 03/02/2011 10:04 AM, ZHOU Xiaobo wrote: required string Content = 3; WARNING: You should be using type bytes here, not type string. This doesn't matter for C++, but matters for other languages which will assume strings contain UTF-8 data. Evan -- http://evanjones.ca/ --

[protobuf] Can a message derive from another message?

2011-03-02 Thread ZHOU Xiaobo
Hi: My problem is that when I receive a packet I have to check one field( say 'int32 COMMAND' ) to decide the type of the inner packet. For example: message OutterPkt { required fiexed32 Length = 1; required int32 COMMAND = 2; required string Content = 3; } message InnerPktA {

Re: [protobuf] Can a message derive from another message?

2011-03-02 Thread Jason Hsueh
No, message inheritance is not supported. Have a look at http://code.google.com/apis/protocolbuffers/docs/techniques.html#union and see if that solves your use case. On Wed, Mar 2, 2011 at 7:04 AM, ZHOU Xiaobo xb.z...@qq.com wrote: Hi: My problem is that when I receive a packet I have to