[protobuf] Using Protobuf in Ruby
For those who may be interested in using Protobuf with Ruby, I recently did an interview with Pat Eyler http://twitter.com/gnupate that details the library I've been using/writing. http://on-ruby.blogspot.com/2011/03/protocol-buffers-bj-nielsens-take.html Cheers, BJ Neilsen -- 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.
[protobuf] Enum changes compatiblities
Hey, I wanted to know that a enum values can be changed like optional/ repeated fields in a protobuf. The new values would only be available to applications using the new .proto. Or, will it cause a decode error for an application receiving the new enum value but doesn't have the updated .proto. Thanks. -Aaron -- 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.
Re: [protobuf] Enum changes compatiblities
It won't be a decode error as long as the enum field is not required. If an application without the new values receive a message containing one of the new enum values, it will treat the value as an unknown field. In the C++ and Java implementations (Python doesn't propagate unknown fields), the value will be stored in the UnknownFieldSet so that it will be included if the message is reserialized. However, the field will not be set, and accessing the field will give you the default value. On Thu, Mar 31, 2011 at 1:25 PM, Aaron aaron.r...@gmail.com wrote: Hey, I wanted to know that a enum values can be changed like optional/ repeated fields in a protobuf. The new values would only be available to applications using the new .proto. Or, will it cause a decode error for an application receiving the new enum value but doesn't have the updated .proto. Thanks. -Aaron -- 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. -- 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.
Re: [protobuf] Unexpected memory usage when using RepeatedPtrField
Does your memory allocator immediately release memory to the system?
Google's tcmalloc, for instance, does not, for performance reasons.
On Wed, Mar 30, 2011 at 3:22 AM, martin sowasdum...@googlemail.com wrote:
Hello everybody,
I've got a strange behaviour when using a message with a repeated
attribute inside.
This is a very simplified example:
message Input
{
required bytes content = 1;
required bytes sender = 2;
required bytes rcpt = 3;
}
message Response
{
repeated Input entries = 1;
}
TEST(CreateResponse)
{
{
Response response;
google::protobuf::RepeatedPtrFieldInput* entries =
response.mutable_entries();
//entries-Reserve(1);
for(int i=0;i1;++i)
{
std::auto_ptrInput in = createInputEntry();
std::string serialized = in-SerializeAsString();
Input* entry = response.add_entries();
entry-ParseFromArray(serialized.data(), serialized.length());
}
std::string serializedResponse = response.SerializeAsString();
}
}
The createInputEntry and serialization does not make in this example
any sense, but it is a simplified scenario what happens in the real
application.
I was expecting that when Response is out of scope the memory usage
should get back to the initial memory size, but unfortunately this
does not happen. In my test case (it is not the initial size is around
2MB, after inserting some entries it increases up to 9MB and the
memory is not released.
The behaviour changes in case I resize the pointer array to lets say
1 in this example. After Response is out of scope the memory usage
is the same as at the beginning. But If I reserve more than entries
are created the inital behaviour comes back.
I am not totally sure what happens at that point. Maybe someone could
explain this strange behaviour.
Thanks in advance.
Martin
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Re: [protobuf] self including message array
Recursive definitions should work, though I'm not sure we have a test case
to verify use in repeated fields. I know there is one for optional messages.
What result did you get?
On Tue, Mar 29, 2011 at 5:58 AM, zad emanuele.plac...@gmail.com wrote:
Is it possible to have in a message declaration an array of the
declaring message?
Let me explain better:
I'm trying to achieve the following:
message resource_info {
optional string device_name=18;
optional Res_type res_type=19 [default=RAW];
repeated resource_info resources=2;
}
I tried also with this:
message resource_info {
optional string device_name=18;
optional Res_type res_type=19 [default=RAW];
extensions 2 to 3;
}
extend resource_info{
repeated resource_info resources=2;
}
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[protobuf] Protobuf in JAX-WS
hi, Sorry, i'm new in Java. Currently, i make a web service using python (for server) and java (for client). Client-Server can updates data synchronously, i'm using long polling method. All i know about how to implement those thing is using JAX WS, to send request and read the callback response. But, JAX WS using XML. How can i using protobuf in JAX-WS, or there are any other library in java that can do it? Thanks in advance Canggih -- 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.
[protobuf] Re: Protobuf in JAX-WS
Unfortunately JAX-WS (Java API for XML Web Services) only works directly with XML (anyone feel free to correct me if I'm misinformed in this regard as I've never fully explored using JAX-WS without XML) You have a couple of options though... If you want to stick with XML based web services you can go with using Base64 encoded protocol buffer message(s) in appropriate XML fields. Likewise you can return data this way. The drawbacks of this are that you're essentially throwing away a lot of the good that comes from web services being well defined in terms of argument and return data types. (Base64 is an encoding scheme for putting binary data in human readable data streams such as XML by only using displayable characters... encoding suffers a 4/3 size penalty as it takes four 6- bit chars to encode three 8-bit bytes) If you're more flexible you can implement a non-XML based web service using a RESTful model, or thin HTTP requests, to post and get protocol buffers directly as raw bytes. There are also some remoting services built on top of protocol buffers that act much like web services. I have not used any of them so I'll leave it to someone more versed in those to speak to them. If you want more info you can ask more questions or do a search on RESTful web services (and yes JAX-WS supports RESTful but still using XML...) Best of luck, Ben Wright On Mar 31, 10:38 pm, Canggih PW cangca...@gmail.com wrote: hi, Sorry, i'm new in Java. Currently, i make a web service using python (for server) and java (for client). Client-Server can updates data synchronously, i'm using long polling method. All i know about how to implement those thing is using JAX WS, to send request and read the callback response. But, JAX WS using XML. How can i using protobuf in JAX-WS, or there are any other library in java that can do it? Thanks in advance Canggih -- 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.
